0001504008-21-000007 | 10-K | XBRL Viewer

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Cover Page - USD ($)	12 Months Ended
Cover Page - USD ($)	Dec. 31, 2020	Feb. 24, 2021	Jun. 30, 2020
Document Information [Line Items]
Document Transition Report	false
Entity Address, Address Line One	14817 Oak Lane
Entity Address, City or Town	Miami Lakes
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	33016
Entity Registrant Name	BankUnited, Inc.
Entity Central Index Key	0001504008
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-K
Document Period End Date	Dec. 31, 2020
Document Fiscal Year Focus	2020
Entity File Number	001-35039
Document Fiscal Period Focus	FY
Amendment Flag	false
Entity Common Stock Shares Outstanding		92,862,055
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Shell Company	false
Entity Shell Company	DE
Entity Tax Identification Number	27-0162450
City Area Code	305
Local Phone Number	569-2000
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Public Float			$ 1,852,385,492
Document Annual Report	true
Entity Well-known Seasoned Issuer	Yes
Entity Voluntary Filers	No
ICFR Auditor Attestation Flag	true
Documents Incorporated by Reference	DOCUMENTS INCORPORATED BY REFERENCE: Portions of the registrant's definitive proxy statement for the 2021 annual meeting of stockholders are incorporated by reference in this Annual Report on Form 10-K in response to Part II. Item 5 and Part III. Items 10, 11, 12, 13 and 14.
NEW YORK STOCK EXCHANGE, INC. [Member]
Document Information [Line Items]
Security Exchange Name	NYSE
Trading Symbol	BKU
Title of 12(b) Security	Common Stock, $0.01 Par Value

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Cash and due from banks:
Non-interest bearing	$ 20,233	$ 7,704
Interest bearing	377,483	206,969
Cash and cash equivalents	397,716	214,673
Investment securities (including securities recorded at fair value of $9,166,683 and $7,759,237)	9,176,683	7,769,237
Non-marketable equity securities	195,865	253,664
Loans held for sale	24,676	37,926
Loans and Leases Receivable, Net of Deferred Income	23,866,042	23,154,988
Financing Receivable, Allowance for Credit Loss	(257,323)	(108,671)
Loans, net	23,608,719	23,046,317
Bank owned life insurance	294,629	282,151
Operating lease equipment, net	663,517	698,153
Goodwill and other intangible assets	77,637	77,674
Other assets	571,051	491,498
Total assets	35,010,493	32,871,293
Demand deposits:
Non-interest bearing	7,008,838	4,294,824
Interest bearing	3,020,039	2,130,976
Savings and money market	12,659,740	10,621,544
Time	4,807,199	7,347,247
Total deposits	27,495,816	24,394,591
Federal funds purchased	180,000	100,000
FHLB advances	3,122,999	4,480,501
Notes and other borrowings	722,495	429,338
Other liabilities	506,171	486,084
Total liabilities	32,027,481	29,890,514
Commitments and contingencies
Stockholders' equity:
Common stock, par value $0.01 per share, 400,000,000 shares authorized; 93,067,500 and 95,128,231 shares issued and outstanding	931	951
Paid-in capital	1,017,518	1,083,920
Retained earnings	2,013,715	1,927,735
Accumulated other comprehensive loss	(49,152)	(31,827)
Total stockholders' equity	2,983,012	2,980,779
Total liabilities and stockholders' equity	35,010,493	32,871,293
Financing Receivable, Allowance for Credit Loss	257,323	108,671
Assets	35,010,493	32,871,293
Loans [Member]
Cash and due from banks:
Financing Receivable, Allowance for Credit Loss	(257,323)	(108,671)
Financing Receivable, Allowance for Credit Loss	$ 257,323	$ 108,671

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
ASSETS
Investment securities recorded at fair value	$ 9,166,683	$ 7,759,237
Stockholders' equity:
Common stock, par value (in Dollars per Share)	$ 0.01	$ 0.01
Common stock, shares authorized (in Shares)	400,000,000	400,000,000
Common stock, shares issued (in Shares)		95,128,231
Common stock, shares outstanding (in Shares)		95,128,231

CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	12 Months Ended
CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Interest income:
Loans	$ 864,175	$ 981,408	$ 1,198,241
Investment securities	193,856	280,560	233,091
Other	9,578	19,902	17,812
Total interest income	1,067,609	1,281,870	1,449,144
Interest expense:
Deposits	199,980	385,180	284,563
Borrowings	115,871	143,905	114,488
Total interest expense	315,851	529,085	399,051
Net interest income before provision for credit losses	751,758	752,785	1,050,093
Provision for credit losses	178,431	8,904	25,925
Net interest income after provision for credit losses	573,327	743,881	1,024,168
Non-interest income:
Deposit service charges and fees	16,496	16,539	14,412
Gain on sale of loans, net	13,170	12,119	15,864
Gain on investment securities, net	17,767	21,174	3,159
Lease financing	59,112	66,631	61,685
Other non-interest income	26,676	30,741	36,902
Total non-interest income	133,221	147,204	132,022
Non-interest expense:
Employee compensation and benefits	217,156	235,330	254,997
Occupancy and equipment	48,237	56,174	55,899
FDIC Indemnification Asset, Accretion of Discount	0	0	261,763
Deposit insurance expense	21,854	16,991	18,984
Professional fees	11,708	20,352	16,539
Technology and telecommunications	58,108	47,509	35,136
Depreciation of operating lease equipment	49,407	48,493	40,025
Other non-interest expense	50,719	62,240	57,197
Total non-interest expense	457,189	487,089	740,540
Income before income taxes	249,359	403,996	415,650
Provision for income taxes	51,506	90,898	90,784
Net income	$ 197,853	$ 313,098	$ 324,866
Earnings per common share, basic	$ 2.06	$ 3.14	$ 3.01
Earnings per common share, diluted	$ 2.06	$ 3.13	$ 2.99

CONSOLIDATED STATEMENTS OF INCOME (Parenthetical) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Provision for credit losses	$ (1,643)	$ 29,232	$ 25,414	$ 125,428	$ (469)	$ 1,839	$ (2,747)	$ 10,281	$ 178,431	$ 8,904	$ 25,925
Non-interest income:
Gain on sale of loans, net									$ 13,170	$ 12,119	$ 15,864

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Statement of Comprehensive Income [Abstract]
Net income	$ 85,737	$ 66,559	$ 76,508	$ (30,951)	$ 89,456	$ 76,219	$ 81,451	$ 65,972	$ 197,853	$ 313,098	$ 324,866
Unrealized gains on investment securities available for sale:
Net unrealized holding gain (loss) arising during the period									46,045	37,616	(57,041)
Reclassification adjustment for net securities gains realized in income									(10,431)	(13,625)	(4,486)
Net change in unrealized gain on securities available for sale									35,614	23,991	(61,527)
Unrealized losses on derivative instruments:
Net unrealized holding gain (loss) arising during the period									(87,402)	(58,760)	3,981
Reclassification adjustment for net (gains) losses realized in income									34,463	(1,931)	(1,469)
Net change in unrealized losses on derivative instruments									(52,939)	(60,691)	2,512
Other comprehensive loss									(17,325)	(36,700)	(59,015)
Comprehensive income									$ 180,528	$ 276,398	$ 265,851

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Cash flows from operating activities:
Net income	$ 197,853	$ 313,098	$ 324,866
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization and accretion, net	(28,246)	(37,319)	(86,549)
Provision for credit losses	178,431	8,904	25,925
Gain on sale of loans, net	(13,170)	(12,119)	(15,864)
Gain on investment securities, net	(17,767)	(21,174)	(3,159)
Equity based compensation	20,367	23,367	23,137
Depreciation and amortization	72,508	72,425	64,268
Deferred income taxes	(27,586)	24,529	67,778
Proceeds from sale of loans held for sale	610,623	412,034	268,589
Loans originated for sale, net of repayments	(26,196)	(86,568)	(155,974)
Other:
(Increase) decrease in other assets	(33,383)	17,749	229,109
Increase (decrease) in other liabilities	(69,266)	(79,220)	82,126
Net cash provided by operating activities	864,168	635,706	824,252
Net Cash Provided by (Used in) Investing Activities [Abstract]
Purchase of investment securities	(4,208,597)	(3,896,234)	(4,138,994)
Proceeds from repayments and calls of investment securities	1,352,788	1,370,584	1,533,951
Proceeds from sale of investment securities	1,503,498	2,975,259	1,030,810
Purchase of non-marketable equity securities	(134,938)	(411,825)	(308,126)
Proceeds from redemption of non-marketable equity securities	192,737	425,213	307,063
Purchases of loans	(3,157,659)	(2,197,484)	(1,308,772)
Loan originations, repayments and resolutions, net	1,819,139	477,805	404,769
Proceeds from sale of loans, net	48,721	265,582	544,745
Proceeds from Sale of Machinery and Equipment	5,310	19,269	52,134
Proceeds from Sale of Mortgage Servicing Rights (MSR)	0	0	34,573
Acquisition of operating lease equipment	(19,597)	(63,786)	(190,500)
Other investing activities	(22,117)	(39,879)	(3,184)
Net cash used in investing activities	(2,620,715)	(1,075,496)	(2,041,531)
Cash flows from financing activities:
Net increase in deposits	3,101,225	920,368	1,595,744
Net increase in federal funds purchased	80,000	(75,000)	175,000
Additions to Federal Home Loan Bank advances	3,857,000	4,512,000	4,647,000
Repayments of Federal Home Loan Bank advances	(5,217,000)	(4,827,000)	(4,622,000)
Proceeds from Issuance of Subordinated Long-term Debt	293,858	0	0
Dividends paid	(86,522)	(84,083)	(91,305)
Proceeds from Stock Options Exercised	19,611	5,817	7,727
Repurchase of common stock	(100,972)	(154,030)	(299,972)
Other financing activities	(7,610)	(25,682)	(7,424)
Net cash provided by financing activities	1,939,590	272,390	1,404,770
Net (decrease) increase in cash and cash equivalents	183,043	(167,400)	187,491
Cash and cash equivalents, beginning of period	214,673	382,073	194,582
Cash and cash equivalents, end of period	397,716	214,673	382,073
Supplemental Cash Flow Information [Abstract]
Interest paid	336,991	518,856	387,801
Income taxes (refunded) paid, net	8,637	229	(288,267)
Supplemental schedule of non-cash investing and financing activities:
Transfers from loans to other real estate owned and other repossessed assets	4,170	3,211	9,709
Transfers from loans to loans held for sale	602,198	536,227	108,503
Transfer of Loans Held-for-sale to Portfolio Loans	0	19,716	0
Dividends declared, not paid	22,309	20,775	21,673
Obligation incurred in acquisition of limited partnership	$ 0	$ 0	$ 4,710

CONSOLIDATED STATEMENTS OF STOCKHOLDERS’ EQUITY - USD ($) $ in Thousands	Total	Common Stock	Paid-in Capital	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares, Outstanding		106,848,185
Total stockholders' equity	$ 3,026,062	$ 1,068	$ 1,498,227	$ 1,471,781	$ 54,986
Comprehensive income	265,851			324,866	(59,015)
Dividends ($0.92 per common share)	(89,923)			(89,923)
Equity based compensation (in Shares)		696,729
Equity based compensation	20,647	$ 7	20,640
Forfeiture of unvested shares (in Shares)		(252,091)
Forfeiture of unvested shares and shares surrendered for tax withholding obligations	$ (6,559)	$ (3)	(6,556)
Exercise of stock options (in Shares)	291,689	291,689
Exercise of stock options	$ 7,727	$ 3	7,724
Stock Repurchased During Period, Shares		(8,443,138)
Stock Repurchased During Period, Value	(299,972)	$ (84)	(299,888)
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification				(8,902)	8,902
Shares, Outstanding		99,141,374
Total stockholders' equity	2,923,833	$ 991	1,220,147	1,697,822	4,873
Comprehensive income	276,398			313,098	(36,700)
Dividends ($0.92 per common share)	(83,185)			(83,185)
Equity based compensation (in Shares)		591,739
Equity based compensation	18,460	$ 6	18,454
Forfeiture of unvested shares (in Shares)		(344,766)
Forfeiture of unvested shares and shares surrendered for tax withholding obligations	$ (6,514)	$ (3)	(6,511)
Exercise of stock options (in Shares)	225,127	255,127
Exercise of stock options	$ 5,817	$ 2	5,815
Stock Repurchased During Period, Shares		(4,485,243)
Stock Repurchased During Period, Value	(154,030)	$ (45)	(153,985)
Shares, Outstanding		95,128,231
Total stockholders' equity	2,980,779	$ 951	1,083,920	1,927,735	(31,827)
Comprehensive income	180,528			197,853	(17,325)
Dividends ($0.92 per common share)	$ (88,056)			(88,056)
Common Stock, Dividends, Per Share, Declared	$ 0.92
Equity based compensation (in Shares)		759,983
Equity based compensation	$ 19,558	$ 8	19,550
Forfeiture of unvested shares (in Shares)		(230,537)
Forfeiture of unvested shares and shares surrendered for tax withholding obligations	$ (4,619)	$ (2)	(4,617)
Exercise of stock options (in Shares)	735,400	735,400
Exercise of stock options	$ 19,611	$ 7	19,604
Stock Repurchased During Period, Shares		(3,325,577)
Stock Repurchased During Period, Value	(100,972)	$ (33)	(100,939)
Shares, Outstanding		93,067,500
Total stockholders' equity	$ 2,983,012	$ 931	$ 1,017,518	$ 2,013,715	$ (49,152)

Basis of Presentation and Summary of Significant Accounting Policies Basis of Presentation (Notes)	12 Months Ended
	Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation and Significant Accounting Policies [Text Block]	Note 1 Basis of Presentation and Summary of Significant Accounting Policies BankUnited, Inc., with total consolidated assets of $35.0 billion at December 31, 2020, is a bank holding company with one wholly-owned subsidiary, BankUnited, collectively, the Company. BankUnited, a national banking association headquartered in Miami Lakes, Florida, provides a full range of commercial lending and both commercial and consumer deposit services through 70 banking centers located in 14 Florida counties and 4 banking centers in the New York metropolitan area. The Bank also provides certain commercial lending and deposit products through national platforms. The consolidated financial statements have been prepared in accordance with GAAP and prevailing practices in the banking industry. Accounting Estimates In preparing the consolidated financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues, and expenses and disclosures of contingent assets and liabilities. Actual results could differ significantly from these estimates. The most significant estimate impacting the Company's consolidated financial statements is the ACL. Principles of Consolidation The consolidated financial statements include the accounts of BankUnited, Inc. and its wholly-owned subsidiary. All significant intercompany balances and transactions have been eliminated in consolidation. VIEs are consolidated if the Company is the primary beneficiary; i.e., has (i) the power to direct the activities of the VIE that most significantly impact the VIE's economic performance and (ii) the obligation to absorb losses or the right to receive benefits that could potentially be significant to the VIE. The Company has variable interests in affordable housing limited partnerships that are not required to be consolidated because the Company is not the primary beneficiary. Fair Value Measurements Certain of the Company's assets and liabilities are reflected in the consolidated financial statements at fair value on either a recurring or non-recurring basis. Investment securities available for sale, marketable equity securities, servicing rights and derivative instruments are measured at fair value on a recurring basis. Assets measured at fair value or fair value less cost to sell on a non-recurring basis may include collateral dependent loans, OREO and other repossessed assets, loans held for sale, goodwill and impaired long-lived assets. These non-recurring fair value measurements typically involve lower-of-cost-or-market accounting or the measurement of impairment of certain assets. Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants at the measurement date. GAAP establishes a hierarchy that prioritizes inputs used to determine fair value measurements into three levels based on the observability and transparency of the inputs: •Level 1 inputs are unadjusted quoted prices in active markets that are accessible at the measurement date for identical assets or liabilities. •Level 2 inputs are observable inputs other than level 1 inputs, including quoted prices for similar assets and liabilities, quoted prices for identical assets and liabilities in less active markets and other inputs that can be corroborated by observable market data. •Level 3 inputs are unobservable inputs supported by limited or no market activity or data and inputs requiring significant management judgment or estimation. The fair value hierarchy requires the Company to maximize the use of observable inputs and minimize the use of unobservable inputs in estimating fair value. Unobservable inputs are utilized in determining fair value measurements only to the extent that observable inputs are unavailable. The need to use unobservable inputs generally results from a lack of market liquidity and diminished observability of actual trades or assumptions that would otherwise be available to value a particular asset or liability. Cash and Cash Equivalents Cash and cash equivalents include cash and due from banks, both interest bearing and non-interest bearing, including amounts on deposit at the Federal Reserve Bank, and federal funds sold. Cash equivalents have original maturities of three months or less. For purposes of reporting cash flows, cash receipts and payments pertaining to FHLB advances with original maturities of three months or less are reported net. Investment Securities Debt securities that the Company has the positive intent and ability to hold to maturity are classified as held to maturity and reported at amortized cost. Debt securities that the Company may not have the intent to hold to maturity are classified as available-for-sale at the time of acquisition and carried at fair value with unrealized gains and losses, net of tax, excluded from earnings and reported in AOCI, a separate component of stockholders' equity. Securities classified as available-for-sale may be used as part of the Company's asset/liability management strategy and may be sold in response to liquidity needs, regulatory changes, changes in interest rates, prepayment risk or other market factors. The Company does not maintain a trading portfolio. Purchase premiums and discounts on debt securities are amortized as adjustments to yield over the expected lives of the securities, using the level yield method. Premiums are amortized to the call date for callable securities. Realized gains and losses from sales of securities are recorded on the trade date and are determined using the specific identification method. The Company's policy on the ACL related to debt securities is discussed below in the section entitled "Allowance for Credit Losses". Marketable equity securities with readily determinable fair values are reported at fair value with unrealized gains and losses included in earnings. Equity securities that do not have readily determinable fair values are reported at cost and re-measured at fair value upon occurrence of an observable price change or recognition of impairment. Non-marketable Equity Securities The Bank, as a member of the FRB system and the FHLB, is required to maintain investments in the stock of the FRB and FHLB. No market exists for this stock, and the investment can be liquidated only through redemption by the respective institutions, at the discretion of and subject to conditions imposed by those institutions. The stock has no readily determinable fair value and is carried at cost. Historically, stock redemptions have been at par value, which equals the Company's carrying value. The Company monitors its investment in FHLB stock for impairment through review of recent financial results of the FHLB, including capital adequacy and liquidity position, dividend payment history, redemption history and information from credit agencies. The Company has not identified any indicators of impairment of FHLB stock. Loans Held for Sale The guaranteed portion of SBA and USDA loans originated with the intent to sell are carried at the lower of cost or fair value, determined in the aggregate. A valuation allowance is established through a charge to earnings if the aggregate fair value of such loans is lower than their cost. Gains or losses recognized upon sale are determined on the specific identification basis. Loans not originated or otherwise acquired with the intent to sell are transferred into the held for sale classification at the lower of carrying amount or fair value when they are specifically identified for sale and a formal plan exists to sell them. Loans The Company's loan portfolio contains 1-4 single family residential first mortgages, government insured residential mortgages, an insignificant amount of other consumer loans, multi-family, non-owner occupied commercial real estate, construction and land, owner-occupied commercial real estate, commercial and industrial and PPP loans, mortgage warehouse lines of credit and sales-type and direct financing leases. Loans are reported at amortized cost basis, net of the ACL. Interest income is accrued based on the principal amount outstanding. Non-refundable loan origination fees, net of direct costs of originating or acquiring loans, as well as purchase premiums and discounts, are deferred and recognized as adjustments to yield over the contractual lives of the related loans using the level yield method. Non-accrual loans Commercial loans are placed on non-accrual status when (i) management has determined that full repayment of all contractual principal and interest is in doubt, or (ii) the loan is past due 90 days or more as to principal or interest unless the loan is well secured and in the process of collection. Residential and other consumer loans, other than government insured residential loans, are generally placed on non-accrual status when they are 90 days past due. When a loan is placed on non-accrual status, uncollected interest accrued is reversed and charged to interest income. Payments received on non-accrual commercial loans are applied as a reduction of principal. Interest payments are recognized as income on a cash basis on non-accrual residential loans. Commercial loans are returned to accrual status only after all past due principal and interest has been collected and full repayment of remaining contractual principal and interest is reasonably assured. Residential and consumer loans are generally returned to accrual status when less than 90 days past due. Past due status of loans is determined based on the contractual next payment due date. Loans less than 30 days past due are reported as current. Contractually delinquent government insured residential loans are not classified as non-accrual due to the nature of the guarantee. Contractually delinquent PCD loans are not classified as non-accrual as long as the Company has a reasonable expectation about amounts expected to be collected. Troubled Debt Restructurings In certain situations, due to economic or legal reasons related to a borrower's financial difficulties, the Company may grant a concession to the borrower for other than an insignificant period of time that it would not otherwise consider. At that time, the related loan is classified as a TDR. The concessions granted may include rate reductions, principal forgiveness, payment forbearance, extensions of maturity at rates of interest below that commensurate with the risk profile of the loans, modification of payment terms and other actions intended to minimize economic loss. A TDR is generally placed on non-accrual status at the time of the modification unless the borrower was performing prior to the restructuring. Pursuant to inter-agency and authoritative guidance and consistent with the CARES Act, short-term (generally periods of six months or less) deferrals or modifications related to COVID-19 will typically not be categorized as TDRs. Additionally, section 4013 of the CARES Act, as amended by the Consolidated Appropriations Act on December 27, 2020, effectively suspended the guidance related to TDRs codified in ASC 310-40 until the earlier of January 1, 2022 or sixty days after the date of the suspension of the declared state of emergency related to the COVID-19 pandemic. The Company has elected to apply the provisions of section 4013 to qualifying loan modifications, other than short-term payment deferrals of 6 months or less that are subject to the interagency guidance, that might otherwise be categorized as TDRs under ASC 310-40. PCD assets PCD assets are acquired financial assets that, as of the date of acquisition, have experienced a more than insignificant deterioration in credit quality since origination. An assessment is conducted at acquisition to determine whether acquired financial assets meet the criteria to be classified as PCD assets. That assessment may be conducted at the individual asset level, or for a group of assets acquired together that have similar risk characteristics. At acquisition, the ACL related to PCD assets, representing the estimated amount of the UPB of the assets not expected to be collected, is added to the purchase price to determine the amortized cost basis and any non-credit related discount or premium is allocated to the individual assets acquired. The non-credit related discount or premium is accreted or amortized to interest income over the life of the related assets using the level yield method, as long as there is a reasonable expectation about amounts expected to be collected. Subsequent changes in the amount of expected credit losses are recognized immediately by adjusting the ACL and reflecting the periodic changes as credit loss expense or reversal of credit loss expense. Loans previously categorized as ACI loans were categorized as PCD loans on initial adoption of ASC 326. At adoption, an ACL was recognized and a corresponding adjustment was made to the assets' amortized cost basis. Prior to the adoption of ASC 326, ACI loans were accounted for on a pool basis. These pools were not maintained on adoption. The Company did not re-assess whether modifications to individual PCD loans previously accounted for in pools were TDRs at adoption. Sales-type and Direct Financing Leases Sales-type and direct financing leases are carried at the aggregate of lease payments receivable and estimated residual value of the leased property, if applicable, less unearned income. Interest income is recognized over the term of the leases to achieve a constant periodic rate of return on the outstanding investment. ACL AFS Debt Securities The Company reviews its AFS debt securities for credit loss impairment at the individual security level on at least a quarterly basis. A security is impaired if its fair value is less than its amortized cost basis. A decline in fair value below amortized cost basis represents a credit loss impairment to the extent the Company does not expect to recover the amortized cost basis of the security. Impairment related to credit losses is recorded through the ACL to the extent fair value is less than the amortized cost basis. Declines in fair value that have not been recorded through the ACL are recorded through other comprehensive income, net of applicable taxes. In assessing whether an impairment is credit loss related, the Company compares the present value of cash flows expected to be collected to the security's amortized cost basis. If the present value of cash flows expected to be collected is less than the amortized cost basis of the security, a credit loss exists and an ACL is recorded. The Company discounts expected cash flows at the effective interest rate implicit in the security at the purchase date, adjusted for expected prepayments. For floating rate securities, the Company uses the floating rate as it changes over the life of the security. In developing estimates about cash flows expected to be collected and determining whether a credit loss exists, the Company considers information about past events, current conditions and reasonable and supportable forecasts. Factors and information that the Company uses in making its assessments include, but are not necessarily limited to, the following: •The extent to which fair value is less than amortized cost; •Adverse conditions specifically related to the security, an industry or geographic area; •Changes in the financial condition of the issuer or underlying loan obligors; •The payment structure and remaining payment terms of the security, including levels of subordination or over-collateralization; •Failure of the issuer to make scheduled payments; •Changes in credit ratings; •Relevant market data; •Estimated prepayments, defaults, and the value and performance of underlying collateral at the individual security level. The relative importance assigned to each of these factors varies depending on the facts and circumstances pertinent to the individual security being evaluated. Timely payment of principal and interest on securities issued by the U.S. Government, U.S. government agencies and U.S. government sponsored entities is explicitly or implicitly guaranteed by the U. S. government. Therefore, the Company expects to recover the amortized cost basis of these securities. If the Company intends to sell a security in an unrealized loss position, or it is more likely than not that the Company will be required to sell the security before recovery of its amortized cost basis, any allowance for credit losses will be written off and the amortized cost basis will be written down to the debt security’s fair value at the reporting date with any incremental impairment reported in earnings. AFS securities will be charged off to the extent that there is no reasonable expectation of recovery of amortized cost basis. AFS securities will be placed on non-accrual status if the Company does not reasonably expect to receive interest payments in the future and interest accrued will be reversed against interest income. Securities will be returned to accrual status only when collection of interest is reasonably assured. Loans The ACL is a valuation account that is deducted from the amortized cost basis of loans to present the net amount expected to be collected. The ACL is adjusted through the provision for credit losses to the amount of amortized cost basis not expected to be collected, or in the case of PCD loans, the amount of UPB not expected to be collected, at the balance sheet date. Amortized cost basis includes UPB, unamortized premiums or discounts and deferred fees and costs, net of amounts previously charged off. The measurement of expected credit losses encompasses information about historical events, current conditions and reasonable and supportable forecasts. Determining the amount of the ACL is complex and requires extensive judgment by management about matters that are inherently uncertain. Re-evaluation of the ACL estimate in future periods, in light of changes in composition and characteristics of the loan portfolio, changes in the reasonable and supportable forecast and other factors then prevailing may result in material changes in the amount of the ACL and credit loss expense in those future periods. Loans are charged off against the ACL in the period in which they are deemed uncollectible and recoveries are credited to the ACL when received. Expected recoveries on loans previously charged off and expected to be charged-off, not to exceed the aggregate of amounts previously charged-off and expected to be charged-off, are included in the ACL estimate. For loans secured by residential real estate, an assessment of collateral value is made at no later than 120 days delinquency; any outstanding loan balance in excess of fair value less cost to sell is charged off at no later than 180 days delinquency. Additionally, any outstanding balance in excess of fair value of collateral less cost to sell is charged off (i) within 60 days of receipt of notification of filing from the bankruptcy court, (ii) within 60 days of determination of loss if all borrowers are deceased or (iii) within 90 days of discovery of fraudulent activity. Other consumer loans are typically charged off at 120 days delinquency. Commercial loans are charged off when, in management's judgment, they are considered to be uncollectible. Expected credit losses are estimated on a collective basis for groups of loans that share similar risk characteristics. Factors that may be considered in aggregating loans for this purpose include but are not necessarily limited to, product or collateral type, industry, geography, internal risk rating, credit characteristics such as credit scores or collateral values, and historical or expected credit loss patterns. For loans that do not share similar risk characteristics with other loans such as collateral dependent loans and TDRs, expected credit losses are estimated on an individual basis. Expected credit losses are estimated over the contractual terms of the loans, adjusted for expected prepayments. Expected prepayments for commercial loans are generally estimated based on the Company's historical experience. For residential loans, expected prepayments are estimated using a model that incorporates industry prepayment data, calibrated to reflect the Company's experience. The contractual term excludes expected extensions, renewals, and modifications unless either of the following applies: management has a reasonable expectation at the reporting date that a TDR will be executed with an individual borrower or the extension or renewal options are included in the original or modified contract at the reporting date and are not unconditionally cancellable by the Company. For the substantial majority of portfolio segments and subsegments, including residential loans other than government insured loans, and most commercial and commercial real estate loans, expected losses are estimated using econometric models. The models employ a factor based methodology, leveraging data sets containing extensive historical loss and recovery information by industry, geography, product type, collateral type and obligor characteristics, to estimate PD and LGD. Measures of PD for commercial loans incorporate current conditions through market cycle or credit cycle adjustments. For residential loans, the models consider FICO and adjusted LTVs. PDs and LGDs are then conditioned on the reasonable and supportable economic forecast. Projected PDs and LGDs, determined based on pool level characteristics, are applied to estimated exposure at default, considering the contractual term and payment structure of loans, adjusted for prepayments, to generate estimates of expected loss. For criticized or classified loans, PDs are adjusted to benchmark PDs established for each risk rating if the most current financial information available is deemed not to be reflective of the borrowers' current financial condition. The ACL estimate incorporates a reasonable and supportable economic forecast through the use of externally developed macroeconomic scenarios applied in the models. A single economic scenario or a probability weighted blend of economic scenarios may be used. The models ingest numerous national, regional and MSA level variables and data points. Some of the more impactful include both current and forecasted unemployment rates, HPI, CRE property forecasts, stock market and market volatility indices, real GDP growth, and a variety of interest rates and spreads. The length of the reasonable and supportable forecast period is evaluated at each reporting period and adjusted if deemed necessary. Currently, the Company uses a 2-year reasonable and supportable forecast period in estimating the ACL. After the reasonable and supportable forecast periods, the models effectively revert to long-term mean losses on a straight-line basis over 12 months. For certain less material portfolios including loans and leases to state and local government entities originated by Pinnacle, small balance commercial loans and consumer loans, the WARM method is used to estimate expected credit losses. Loss rates are applied to the exposure at default, after factoring in amortization and expected prepayments. For the Pinnacle portfolio, historical loss information is based on municipal historical default and recovery data, segmented by credit rating. For small balance commercial loans, historical loss information is based on the Company's historical loss experience over a five year period. For consumer loans, historical loss information is based on peer data; this portfolio subsegment is not significant. All loss estimates are conditioned as applicable on changes in current conditions and the reasonable and supportable economic forecast. Expected credit losses for the funded portion of mortgage warehouse lines of credit are estimated based primarily on the Company's historical loss experience, conditioned as applicable on changes in current conditions and the reasonable and supportable economic forecast. Generally, given the nature of these loans, losses would be expected to manifest within a very short time period after origination. The Company expects to collect the amortized cost basis of government insured residential loans and PPP loans due to the nature of the government guarantee, so the ACL is zero for these loans. Qualitative factors Qualitative adjustments are made to the ACL when, based on management’s judgment, there are factors impacting expected credit losses not taken into account by the quantitative calculations. Potential qualitative adjustments are categorized as follows: •Economic factors, including material trends and developments that, in management's judgment, may not have been considered in the reasonable and supportable economic forecast; •Credit policy and staffing, including the nature and level of policy and procedural exceptions or changes in credit policy not reflected in quantitative results, changes in the quality of underwriting and portfolio management and staff and issues identified by credit review, internal audit or regulators that may not be reflected in quantitative results; •Concentrations, considering whether the quantitative estimate adequately accounts for concentration risk in the portfolio; •Model imprecision and model validation findings; and •Other factors not adequately considered in the quantitative estimate or other qualitative categories identified by management that may materially impact the amount of expected credit losses. Collateral dependent loans Collateral dependent loans are those for which the borrower is experiencing financial difficulty and repayment is expected to be provided substantially through the operation or sale of the collateral. These loans do not typically share similar risk characteristics with other loans and expected credit losses are evaluated on an individual basis. Loans evaluated individually are not included in the collective evaluation. Estimates of expected credit losses for collateral dependent loans, whether or not foreclosure is probable, are based on the fair value of the collateral, adjusted for selling costs when repayment depends on sale of the collateral. Due to immateriality, expected credit losses for collateral dependent commercial relationships with committed balances less than $1.0 million may be estimated collectively. Troubled debt restructurings For TDRs or loans for which there is a reasonable expectation that a TDR will be executed that are not collateral dependent, the credit loss estimate is determined by comparing the net present value of expected cash flows, discounted at the loan’s original effective interest rate, to the amortized cost basis of the loan. Off-balance sheet credit exposures Expected credit losses related to off-balance sheet credit exposures are estimated over the contractual period for which the Company is exposed to credit risk via a contractual obligation to extend credit, unless that obligation is unconditionally cancellable by the Company. Expected credit losses are estimated using essentially the same methodologies employed to estimate expected credit losses on the amortized cost basis of loans, taking into consideration the likelihood and amount of additional amounts expected to be funded over the terms of the commitments. The liability for credit losses on off-balance sheet credit exposures is presented within other liabilities on the consolidated balance sheets, distinct from the ACL. Adjustments to the liability are included in the provision for credit losses. Accrued Interest Receivable The Company has elected to present accrued interest receivable separate from the amortized cost basis of financial assets carried at amortized cost. The Company is applying the practical expedient provided in ASC 326 to exclude accrued interest receivable balances from tabular disclosures about financial assets carried at amortized cost. The Company generally does not estimate an ACL on accrued interest receivable balances since uncollectible accrued interest is timely written off in accordance with the Company's accounting policies for non-accrual loans. Under unusual circumstances, such as those presented by deferrals granted due to the COVID-19 pandemic, the Company evaluates whether its non-accrual policies continue to consistently provide for timely reversal of accrued interest receivable. If considered necessary, the Company records an allowance for uncollectible accrued interest receivable, determined using essentially the same methodologies used to estimate the ACL on the amortized cost basis of the related loans. The allowance is deducted from accrued interest receivable and presented within other assets on the consolidated balance sheets, distinct from the ACL. Changes in the ACL related to accrued interest receivable are included in the provision for credit losses. Leases The Company determines whether a contract is or contains a lease at inception. For leases with terms greater than twelve months under which the Company is lessee, ROU assets and lease liabilities are recorded at the commencement date. Lease liabilities are initially recorded based on the present value of future lease payments over the lease term. ROU assets are initially recorded at the amount of the associated lease liabilities plus prepaid lease payments and initial direct costs, less any lease incentives received. The cost of short term leases is recognized on a straight line basis over the lease term. The lease term includes options to extend if the exercise of those options is reasonably certain and includes termination options if there is reasonable certainty the options will not be exercised. Lease payments are discounted using the Company's FHLB borrowing rate for borrowings of a similar term unless an implicit rate is defined in the contract or is determinable, which is generally not the case. Leases are classified as financing or operating leases at commencement; generally, leases are classified as finance leases when effective control of the underlying asset is transferred. The substantial majority of leases under which the Company is lessee are classified as operating leases. For operating leases, lease cost is recognized in the consolidated statements of income on a straight line basis over the lease terms. For finance leases, interest expense on lease liabilities is recognized on the effective interest method and amortization of ROU assets is recognized on a straight line basis over the lease terms. Variable lease costs are recognized in the period in which the obligation for those costs is incurred. The Company has elected not to separate lease from non-lease components of its lease contracts. Bank Owned Life Insurance Bank owned life insurance is carried at cash surrender value. Changes in cash surrender value are recorded in non-interest income. Operating Lease Equipment Operating lease equipment is carried at cost less accumulated depreciation and is depreciated to estimated residual value using the straight-line method over the lease term. Estimated residual values are re-evaluated at least annually, based primarily on current residual value appraisals. Rental revenue is recognized on a straight-line basis over the contractual term of the lease. A review for impairment of equipment under operating lease is performed at least annually or when events or changes in circumstances indicate that the carrying amount of long-lived assets may not be recoverable. Impairment of assets is determined by comparing the carrying amount to future undiscounted net cash flows expected to be generated. If an asset is impaired, the measure of impairment is the amount by which the carrying amount exceeds the fair value of the asset. Goodwill Goodwill represents the excess of consideration transferred in business combinations over the fair value of net tangible and identifiable intangible assets acquired. Goodwill is not amortized, but is tested for impairment annually or more frequently if events or circumstances indicate that impairment may have occurred. The Company performs its annual goodwill impairment test in the third fiscal quarter. The Company has a single reporting unit. When assessing goodwill for impairment, the Company may elect to perform a qualitative assessment to determine if a quantitative impairment test is necessary. If a qualitative assessment is not performed, or if the qualitative assessment indicates it is likely that the fair value of a reporting unit is less than its carrying amount, a quantitative test is performed. The quantitative impairment test compares the estimated fair value of the reporting unit to its carrying amount. If the fair value of the reporting unit exceeds its carrying amount, no impairment is indicated. If the fair value of the reporting unit is less than its carrying amount, impairment of goodwill is measured as the excess of the carrying amount over fair value. OREO and Repossessed Assets OREO and repossessed assets consists of real estate assets acquired through, or in lieu of, loan foreclosure and personal property acquired through repossession. Such assets are included in other assets in the accompanying consolidated balance sheets. These assets are held for sale and are initially recorded at estimated fair value less costs to sell, establishing a new cost basis. Subsequent to acquisition, periodic valuations are performed and the assets are carried at the lower of the carrying amount at the date of acquisition or estimated fair value less cost to sell. Significant property improvements are capitalized to the extent that the resulting carrying value does not exceed fair value less cost to sell. Legal fees, maintenance, taxes, insurance and other direct costs of holding and maintaining these assets are expensed as incurred. Premises and Equipment Premises and equipment are carried at cost less accumulated depreciation and amortization and are included in other assets in the accompanying consolidated balance sheets. Depreciation is calculated using the straight-line method over the estimated useful lives of the assets. The lives of improvements to existing buildings are based on the lesser of the estimated remaining lives of the buildings or the estimated useful lives of the improvements. Leasehold improvements are amortized over the shorter of the expected terms of the leases at inception, considering options to extend that are reasonably assured, or their useful lives. The estimated useful lives of premises and equipment are as follows: •buildings and improvements - 10 to 30 years; •leasehold improvements - 5 to 20 years; •furniture, fixtures and equipment - 5 to 7 years; and •computer equipment - 3 to 5 years. Software and CCA Software and CCA are carried at cost less accumulated depreciation and amortization and are included in other assets in the accompanying consolidated balance sheets. Depreciation and amortization are calculated using the straight-line method over the estimated useful lives of the assets, which for CCA is based on the term of the associated hosting arrangements plus any reasonably certain renewals. Direct costs associated with developing or obtaining and implementing internal use software and hosting arrangements that are service contracts incurred during the application development stage are capitalized. The estimated useful lives of software, software licensing rights and CCA implementation costs range from 3 to 5 years. Loan Servicing Rights Loan servicing rights relate to the portion of SBA and USDA loans sold in the secondary market and are measured at fair value, with changes in fair value subsequent to acquisition recognized in earnings. Loan servicing rights are included in other assets in the accompanying consolidated balance sheets. Servicing fee income is recorded net of changes in fair value in other non-interest income. Neither the loan servicing rights nor related income have had a material impact on the Company's financial statements to date. Investments in Affordable Housing Limited Partnerships The Company has acquired investments in limited partnerships that manage or invest in qualified affordable housing projects and provide the Company with low-income housing tax credits and other tax benefits. These investments are included in other assets in the accompanying consolidated balance sheets. The Company accounts for investments in qualified affordable housing projects using the proportional amortization method if certain criteria are met. Under the proportional amortization method, the initial cost of the investment is amortized in proportion to the tax credits and other tax benefits received and the amortization is recognized in the income statement as a component of income tax expense. The investments are evaluated for impairment when events or changes in circumstances indicate that it may be more likely than not that the carrying amount of the investment will not be realized. Income Taxes The Company accounts for income taxes using the asset and liability method. Deferred tax assets and liabilities are determined based on differences between the financial reporting and tax bases of assets and liabilities using enacted tax rates in effect for periods in which the differences are expected to reverse. The effect of changes in tax rates on deferred tax assets and liabilities are recognized in income in the period that includes the enactment date. A valuation allowance is established for deferred tax assets when management determines that it is more likely than not that some portion or all of a deferred tax asset will not be realized. In making such determinations, the Company considers all available positive and negative evidence that may impact the realization of deferred tax assets. These considerations include the amount of taxable income generated in statutory carryback periods, future reversals of existing taxable temporary differences, projected future taxable income and available tax planning strategies. The Company recognizes tax benefits from uncertain tax positions when it is more likely than not that the related tax positions will be sustained upon examination, including resolutions of any related appeals or litigation processes, based on the technical merits of the tax positions. An uncertain tax position is a position taken in a previously filed tax return or a position expected to be taken in a future tax return that is not based on clear and unambiguous tax law. The Company measures tax benefits related to uncertain tax positions based on the largest benefit that has a greater than 50% likelihood of being realized upon settlement. If the initial assessment fails to result in recognition of a tax benefit, the Company subsequently recognizes a tax benefit if (i) there are changes in tax law or case law that raise the likelihood of prevailing on the technical merits of the position to more-likely-than-not, (ii) the statute of limitations expires, or (iii) there is a completion of an examination resulting in a settlement of that tax year or position with the appropriate agency. The Company recognizes interest and penalties related to uncertain tax positions, as well as interest income or expense related to tax settlements, in the provision for income taxes. Equity Based Compensation The Company periodically grants unvested or restricted shares of common stock and other share-based awards to key employees. For equity classified awards, compensation cost is measured based on the estimated fair value of the awards at the grant date and is recognized in earnings on a straight-line basis over the requisite service period for each award. Liability-classified awards are remeasured each reporting period at fair value until the award is settled, and compensation cost is recognized in earnings on a straight-line basis over the requisite service period for each award, adjusted for changes in fair value each reporting period. Compensation cost related to awards that embody performance conditions is recognized when it is probable that the performance conditions will be achieved. The number of awards expected to vest is estimated in determining the amount of compensation cost to be recognized related to share-based payment transactions. The fair value of unvested shares is generally based on the closing market price of the Company's common stock at the date of grant. Market conditions embedded in awards are reflected in the grant-date fair value of the awards. Derivative Financial Instruments and Hedging Activities Interest rate derivative contracts The Company uses interest rate derivative contracts, such as swaps, caps, floors and collars, in the normal course of business to meet the financial needs of its customers and to manage exposure to changes in interest rates. Interest rate contracts are recorded as assets or liabilities in the consolidated balance sheets at fair value. Interest rate swaps that are used as a risk management tool to hedge the Company's exposure to changes in interest rates have been designated as cash flow or fair value hedging instruments. The gain or loss resulting from changes in the fair value of interest rate swaps designated and qualifying as cash flow hedging instruments is initially reported as a component of other comprehensive income and subsequently reclassified into earnings in the same period in which the hedged transaction affects earnings. Changes in the fair value of interest rate swaps designated as fair value hedging instruments as well as changes in the fair value of the hedged items caused by fluctuations in the designated benchmark interest rates are recognized in earnings. The Company discontinues hedge accounting prospectively when it is determined that the derivative is no longer effective in offsetting changes in the cash flows or fair value of the hedged item, the derivative expires or is sold, terminated, or exercised, management determines that the designation of the derivative as a hedging instrument is no longer appropriate or, for a cash flow hedge, the occurrence of the forecasted transaction is no longer probable. When hedge accounting on a cash flow hedge is discontinued, any subsequent changes in fair value of the derivative are recognized in earnings. The cumulative unrealized gain or loss related to a discontinued cash flow hedge continues to be reported in AOCI and is subsequently reclassified into earnings in the same period in which the hedged transaction affects earnings, unless it is probable that the forecasted transaction will not occur by the end of the originally specified time period, in which case the cumulative unrealized gain or loss reported in AOCI is reclassified into earnings immediately. When hedge accounting on a fair value hedge is discontinued, adjustments to the carrying amount of the hedged item due to changes in fair value are also discontinued. Cash flows resulting from derivative financial instruments that are accounted for as hedges are classified in the cash flow statement in the same category as the cash flows from the hedged items. Changes in the fair value of interest rate contracts not designated as, or not qualifying as, hedging instruments are recognized currently in earnings. Transfers of Financial Assets Transfers of financial assets are accounted for as sales when control over the assets has been surrendered. A gain or loss is recognized in earnings upon completion of the sale based on the difference between the sales proceeds and the carrying value of the assets. Control over the transferred assets is deemed to have been surrendered when: (i) the assets have been legally isolated from the Company, (ii) the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets, and (iii) the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity or the ability to unilaterally cause the holder to return specific assets. Advertising Costs Advertising costs are expensed as incurred. Earnings per Common Share Basic earnings per common share is calculated by dividing income allocated to common stockholders for basic earnings per common share by the weighted average number of common shares outstanding for the period, reduced by average unvested stock awards. Unvested stock awards with non-forfeitable rights to dividends, whether paid or unpaid, and stand-alone dividend participation rights are considered participating securities and are included in the computation of basic earnings per common share using the two class method whereby net income is allocated between common stock and participating securities. In periods of a net loss, no allocation is made to participating securities as they are not contractually required to fund net losses. Diluted earnings per common share is computed by dividing income allocated to common stockholders for basic earnings per common share, adjusted for earnings reallocated from participating securities, by the weighted average number of common shares outstanding for the period increased for the dilutive effect of unexercised stock options and unvested stock awards using the treasury stock method. Contingently issuable shares are included in the calculation of earnings per common share as if the end of the respective period was the end of the contingency period. Revenue From Contracts with Customers Revenue from contracts with customers within the scope of Topic 606 "Revenue from Contracts with Customers", is recognized in an amount that reflects the consideration the Company expects to be entitled to receive in exchange for those goods or services as the related performance obligations are satisfied. The majority of our revenues, including revenues from loans, leases, investment securities, derivative instruments and letters of credit and from transfers and servicing of financial assets, are excluded from the scope of Topic 606. Deposit service charges and fees is the most significant category of revenue within the scope of the standard. These service charges and fees consist primarily of monthly maintenance fees and other transaction based fees. Revenue is recognized when our performance obligations are complete, generally monthly for account maintenance fees or when a transaction, such as a wire transfer, is completed. Payment is typically received at the time the performance obligation is satisfied. The aggregate amount of revenue that is within the scope of Topic 606 from sources other than deposit service charges and fees is not material. Reclassifications Certain amounts presented for prior periods have been reclassified to conform to the current period presentation. New Accounting Pronouncements Adopted in 2020 ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326); Measurement of Credit Losses on Financial Instruments. The ASU, along with subsequent ASUs issued to clarify certain of its provisions, introduced new guidance which made substantive changes to the accounting for credit losses. The ASU introduced the CECL model which applies to financial assets subject to credit losses and measured at amortized cost, as well as certain off-balance sheet credit exposures. This includes loans, loan commitments, standby letters of credit, net investments in leases recognized by a lessor and HTM debt securities. The CECL model requires an entity to estimate credit losses expected over the life of an exposure, considering information about historical events, current conditions and reasonable and supportable forecasts, and is generally expected to result in earlier recognition of credit losses. The ASU also modified certain provisions of the previous OTTI model for AFS debt securities. Credit losses on AFS debt securities are now limited to the difference between the security's amortized cost basis and its fair value, and should be recognized through an allowance for credit losses rather than as a direct reduction in amortized cost basis. The Company adopted this ASU in the first quarter of 2020 using the modified retrospective transition method for the CECL model and a prospective approach for the AFS debt security model. The Company recorded a cumulative-effect adjustment to retained earnings of $23.8 million, which included $4.8 million related to off -balance sheet credit exposures, on January 1, 2020. No cumulative-effect adjustment was recorded related to AFS debt securities upon adoption. The Company has elected to phase-in the initial impact of the adoption of ASC 326 for regulatory capital purposes, allowing the impact of adoption on regulatory capital to be delayed for two years, followed by a three-year transition period. ASU No. 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting. The ASU provides optional relief for a limited period of time to ease the potential accounting burden associated with transitioning away from reference rates that are expected to be discontinued. Under this ASU, companies are provided with optional expedients and exceptions for applying GAAP to contract modifications and hedging relationships that currently utilize LIBOR as their benchmark rate, subject to certain criteria being met. The amendments in the ASU also apply to contemporaneous modifications of other contract terms related to the replacement of LIBOR. The amendments in the ASU are effective for all entities as of March 12, 2020 and will only be in effect through December 31, 2022. To date, the impact of adoption of this ASU on the Company's consolidated financial position, results of operations, and cash flows has not been material. ASU No. 2021-01, Reference Rate Reform (Topic 848). This ASU clarifies that certain optional expedients and exceptions provided for in ASU No. 2020-04 for applying GAAP to contract modifications and hedging relationships apply to derivatives that are affected by the discounting transition. The amendments in this ASU are elective and apply to all entities that have derivative instruments that use an interest rate for margining, discounting, or contract price alignment that is modified as a result of reference rate reform. This ASU is effective immediately for all entities and it can be applied on a retrospective basis as of any date from the beginning of an interim period that includes or is subsequent to March 22, 2020, or on a prospective basis beginning on January 7, 2021. The Company elected to adopt this ASU on a retrospective basis. To date, the impact of adoption of this ASU on the Company's consolidated financial position, results of operations, and cash flows has not been material. Accounting Pronouncements Not Yet Adopted ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. This ASU simplifies the accounting for income taxes by removing certain exceptions stipulated in ASC 740 and making some other targeted changes to the accounting for income taxes. The Company adopted this ASU on January 1, 2021 with no material impact on the Company’s consolidated financial position, results of operations, and cash flows.

Earnings Per Common Share

12 Months Ended

Dec. 31, 2020

Earnings Per Share [Abstract]

Earnings Per Common Share

Note 2 Earnings Per Common Share

The computation of basic and diluted earnings per common share is presented below for the years ended December 31, 2020, 2019 and 2018 (in thousands, except share and per share data):



c	2020		2019		2018
Basic earnings per common share:
Numerator:
Net income	$	197,853	$	313,098	$	324,866
Distributed and undistributed earnings allocated to participating securities	(8,882)		(13,371)		(13,047)
Income allocated to common stockholders for basic earnings per common share	$	188,971	$	299,727	$	311,819
Denominator:
Weighted average common shares outstanding	92,869,736		96,581,290		104,916,865
Less average unvested stock awards	(1,163,480)		(1,127,275)		(1,171,994)
Weighted average shares for basic earnings per common share	91,706,256		95,454,015		103,744,871
Basic earnings per common share	$	2.06	$	3.14	$	3.01
Diluted earnings per common share:
Numerator:
Income allocated to common stockholders for basic earnings per common share	$	188,971	$	299,727	$	311,819
Adjustment for earnings reallocated from participating securities	(123)		(175)		(195)
Income used in calculating diluted earnings per common share	$	188,848	$	299,552	$	311,624
Denominator:
Weighted average shares for basic earnings per common share	91,706,256		95,454,015		103,744,871
Dilutive effect of stock options	24,608		202,890		332,505
Weighted average shares for diluted earnings per common share	91,730,864		95,656,905		104,077,376
Diluted earnings per common share	$	2.06	$	3.13	$	2.99

Participating securities include unvested shares and 3,023,314 dividend equivalent rights that were issued in conjunction with the IPO of the Company's common stock. These dividend equivalent rights expire in the first quarter of 2021 and participate in dividends on a one-for-one basis.

Potentially dilutive unvested shares and share units totaling 1,638,642, 1,050,455 and 1,463,607 were outstanding at December 31, 2020, 2019 and 2018, respectively, but excluded from the calculation of diluted earnings per common share because their inclusion would have been anti-dilutive.

Investment Securities

12 Months Ended

Dec. 31, 2020

Investments, Debt and Equity Securities [Abstract]

Investment Securities

Investment securities include investment securities available for sale, marketable equity securities, and investment securities held to maturity. The investment securities portfolio consisted of the following at December 31, 2020 and 2019 (in thousands):


	2020

	Amortized Cost		Gross Unrealized				Carrying Value (1)
			Gains		Losses
Investment securities available for sale:
U.S. Treasury securities	$	79,919	$	1,307	$	(375)	$	80,851
U.S. Government agency and sponsored enterprise residential MBS	2,389,450		19,148		(3,028)		2,405,570
U.S. Government agency and sponsored enterprise commercial MBS	531,724		9,297		(1,667)		539,354

Private label residential MBS and CMOs	982,890		16,274		(561)		998,603
Private label commercial MBS(2)	2,514,271		24,931		(12,848)		2,526,354
Single family rental real estate-backed securities	636,069		14,877		(58)		650,888
Collateralized loan obligations	1,148,724		285		(8,735)		1,140,274
Non-mortgage asset-backed securities	246,597		6,898		(234)		253,261
State and municipal obligations	213,743		21,966		—		235,709
SBA securities	233,387		2,093		(3,935)		231,545

	8,976,774		$	117,076	$	(31,441)	9,062,409
Investment securities held to maturity	10,000						10,000
	$	8,986,774					9,072,409
Marketable equity securities							104,274
							$	9,176,683


	2019

	Amortized Cost		Gross Unrealized				Carrying Value (1)
			Gains		Losses
Investment securities available for sale:
U.S. Treasury securities	$	70,243	$	219	$	(137)	$	70,325
U.S. Government agency and sponsored enterprise residential MBS	2,018,853		9,835		(6,513)		2,022,175
U.S. Government agency and sponsored enterprise commercial MBS	366,787		4,920		(731)		370,976

Private label residential MBS and CMOs	1,001,337		11,851		(1,011)		1,012,177
Private label commercial MBS	1,719,228		6,650		(1,194)		1,724,684
Single family rental real estate-backed securities	467,459		4,016		(1,450)		470,025
Collateralized loan obligations	1,204,905		322		(7,861)		1,197,366
Non-mortgage asset-backed securities	194,171		1,780		(1,047)		194,904
State and municipal obligations	257,528		15,774		—		273,302
SBA securities	359,808		4,587		(1,664)		362,731
	7,660,319		$	59,954	$	(21,608)	7,698,665
Investment securities held to maturity	10,000						10,000
	$	7,670,319					7,708,665
Marketable equity securities							60,572
							$	7,769,237

(1)At fair value except for securities held to maturity.

(2)Amortized cost is net of ACL totaling $0.4 million at December 31, 2020.

Investment securities held to maturity at December 31, 2020 and 2019 consisted of one State of Israel bond maturing in 2024. At December 31, 2020 and 2019 accrued interest receivable on investments totaled $17 million and $28 million, respectively, and is included in other assets in the accompanying consolidated balance sheets.

At December 31, 2020, contractual maturities of investment securities available for sale, adjusted for anticipated prepayments when applicable, were as follows (in thousands):


	Amortized Cost		Fair Value
Due in one year or less	$	913,305	$	922,531
Due after one year through five years	5,415,656		5,441,360
Due after five years through ten years	2,137,170		2,180,434
Due after ten years	510,643		518,084
	$	8,976,774	$	9,062,409

The carrying value of securities pledged as collateral for FHLB advances, public deposits, interest rate swaps and to secure borrowing capacity at the FRB totaled $4.1 billion and $2.4 billion at December 31, 2020 and 2019, respectively.

The following table provides information about gains and losses on investment securities for the years ended December 31, 2020, 2019 and 2018 (in thousands):



	2020		2019		2018
Proceeds from sale of investment securities available for sale	$	1,503,498	$	2,975,259	$	1,030,810


Gross realized gains:
Investment securities available for sale	$	14,441	$	21,961	$	8,617


Gross realized losses:
Investment securities available for sale	(440)		(3,424)		(2,514)


Net realized gain	14,001		18,537		6,103



Net unrealized gains (losses) on marketable equity securities recognized in earnings	3,766		2,637		(2,944)



Gain on investment securities, net	$	17,767	$	21,174	$	3,159

The following tables present the aggregate fair value and the aggregate amount by which amortized cost exceeded fair value for investment securities available for sale in unrealized loss positions aggregated by investment category and length of time that individual securities had been in continuous unrealized loss positions at the December 31, 2020 and 2019 (in thousands):



	2020
	Less than 12 Months				12 Months or Greater				Total
	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
U.S. Treasury securities	$	24,369	$	(375)	$	—	$	—	$	24,369	$	(375)
U.S. Government agency and sponsored enterprise residential MBS	220,179		(320)		370,727		(2,708)		590,906		(3,028)
U.S. Government agency and sponsored enterprise commercial MBS	152,233		(1,412)		44,255		(255)		196,488		(1,667)

Private label residential MBS and CMOs	141,407		(561)		—		—		141,407		(561)
Private label commercial MBS	1,268,381		(12,771)		37,783		(77)		1,306,164		(12,848)
Single family rental real estate-backed securities	28,758		(58)		—		—		28,758		(58)
Collateralized loan obligations	304,051		(1,171)		588,463		(7,564)		892,514		(8,735)
Non-mortgage asset-backed securities	—		—		12,327		(234)		12,327		(234)

SBA securities	26,240		(298)		104,598		(3,637)		130,838		(3,935)

	$	2,165,618	$	(16,966)	$	1,158,153	$	(14,475)	$	3,323,771	$	(31,441)



	2019
	Less than 12 Months				12 Months or Greater				Total
	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
U.S. Treasury securities	$	20,056	$	(137)	$	—	$	—	$	20,056	$	(137)
U.S. Government agency and sponsored enterprise residential MBS	579,076		(3,862)		243,839		(2,651)		822,915		(6,513)
U.S. Government agency and sponsored enterprise commercial MBS	99,610		(696)		6,477		(35)		106,087		(731)

Private label residential MBS and CMOs	180,398		(838)		41,636		(173)		222,034		(1,011)
Private label commercial MBS	648,761		(1,060)		76,302		(134)		725,063		(1,194)
Single family rental real estate-backed securities	241,915		(1,445)		5,460		(5)		247,375		(1,450)
Collateralized loan obligations	63,310		(846)		682,076		(7,015)		745,386		(7,861)
Non-mortgage asset-backed securities	78,964		(962)		7,883		(85)		86,847		(1,047)

SBA securities	10,236		(2)		142,204		(1,662)		152,440		(1,664)

	$	1,922,326	$	(9,848)	$	1,205,877	$	(11,760)	$	3,128,203	$	(21,608)

The Company monitors its investment securities available for sale for credit loss impairment on an individual security basis. An allowance for credit loss was recorded related to one private label commercial MBS security during the year ended December 31, 2020. See further discussion below in the section entitled "Private Label Commercial MBS". There were no securities other than temporarily impaired during the year ended December 31, 2019. At December 31, 2020 the Company did not have an intent to sell securities that were in significant unrealized loss positions and it was not more likely than not that the Company would be required to sell these securities before recovery of the amortized cost basis, which may be at maturity. In making this determination, the Company considered its current and projected liquidity position, its investment policy as to permissible holdings and concentration limits, regulatory requirements and other relevant factors.

At December 31, 2020, 148 securities available for sale were in unrealized loss positions. The amount of impairment related to 24 of these securities was considered insignificant both individually and in the aggregate, totaling approximately $0.3 million and no further analysis with respect to these securities was considered necessary.

The basis for conclusions regarding credit loss impairment of AFS debt securities and the need to record an ACL at December 31, 2020 is further discussed below.

U.S. Government Agency and Government Sponsored Enterprise Securities

At December 31, 2020, one U.S. treasury, twenty U.S. Government agency and sponsored enterprise residential MBS, seven U.S. Government agency and sponsored enterprise commercial MBS and eleven SBA securities were in unrealized loss positions. The timely payment of principal and interest on these securities is explicitly or implicitly guaranteed by the U.S. Government. As such, there is an assumption of zero credit loss and the Company expects to recover the entire amortized cost basis of these securities.

Private Label Securities:

None of the impaired private label securities had missed principal or interest payments or had been downgraded by a NRSRO at December 31, 2020. The Company performed an analysis comparing the present value of cash flows expected to be collected to the amortized cost basis of impaired securities. This analysis was based on a scenario that we believe to be generally more severe than our reasonable and supportable economic forecast at December 31, 2020, and incorporated assumptions about voluntary prepayment rates, collateral defaults, delinquencies, severity and other relevant factors as described further below. Our analysis also considered the structural characteristics of each security and the level of credit enhancement provided by that structure.

Private label residential MBS and CMOs

At December 31, 2020, three private label residential MBS and CMOs were in unrealized loss positions. Our analysis of cash flows expected to be collected on these securities incorporated assumptions about collateral default rates, voluntary prepayment rates, loss severity, delinquencies and recovery lag. In developing those assumptions, we took into account collateral quality measures such as FICO, LTV, documentation, loan type, property type, agency availability criteria and performing status. We also regularly monitor sector data including home price appreciation, forbearance, delinquency and prepay trends as well as other economic data which would indicate further stress in the sector. Our December 31, 2020 analysis projected weighted average collateral losses for impaired securities in this category of 4% compared to weighted average credit support of 18%. As of December 31, 2020, all of the impaired securities in this category were externally rated AAA.

Private label commercial MBS

At December 31, 2020, fifty-nine private label commercial MBS were in unrealized loss positions. Our analysis of cash flows expected to be collected on these securities incorporated assumptions about collateral default rates, voluntary prepayment rates, loss severity, delinquencies and recovery lag. In developing those assumptions, we took into account collateral quality and type, loan size, loan purpose and other qualitative factors. We also regularly monitor collateral watch lists, bankruptcy data, special servicing trends, delinquency and other economic data which would indicate further stress in the sector. Unrealized losses in this sector were primarily attributable to widening spreads, resulting in large part from market response to, and dislocation in the wake of, the COVID-19 pandemic. An allowance for credit loss of $0.4 million was recorded for one security in this asset class. While this security is not projected to sustain credit losses and management does not intend to sell the security at the balance sheet date, due to negative underlying collateral performance trends, the security is being closely monitored and may not be held until full recovery of its amortized cost basis.

Our December 31, 2020 analysis projected weighted average collateral losses for impaired securities in this category of 12% compared to weighted average credit support of 42%. As of December 31, 2020, 85% of impaired securities in this category, based on carrying value, were externally rated AAA, 9% were rated AA and 6% were rated A.

Collateralized loan obligations

At December 31, 2020, twenty-one collateralized loan obligations were in unrealized loss positions. Unrealized losses in this portfolio segment were primarily due to widening spreads, at least in part resulting from market response to uncertainty surrounding the COVID-19 pandemic and its impact on leveraged loan pricing. Our analysis of cash flows expected to be collected on these securities incorporated assumptions about collateral default rates, loss severity, and delinquencies, calibrated to take into account idiosyncratic risks associated with the underlying collateral. In developing those assumptions, we took into account each sector’s performance pre, during and post the 2008 financial crisis. We regularly engage with bond managers to monitor trends in underlying collateral including potential downgrades and subsequent cash flow diversions, liquidity, ratings migration, and any other relevant developments. Our December 31, 2020 analysis projected weighted average collateral losses for impaired securities in this category of 23% compared to weighted average credit support of 42%. As of December 31, 2020, 81% of the impaired securities in this category, based on carrying value, were externally rated AAA, 15% were rated AA and 4% were rated A.

Non-mortgage asset-backed securities

At December 31, 2020, two non-mortgage asset-backed securities were in unrealized loss positions. These securities are backed by student loan collateral. Our analysis of cash flows expected to be collected on these securities incorporated assumptions about collateral default rates, loss severity, delinquencies, voluntary prepayment rates and recovery lag. In

developing those assumptions, we took into account collateral type, delineated by whether collateral consisted of loans to borrowers in school, refinancing, or a mixture. Our December 31, 2020 analysis projected weighted average collateral losses for impaired securities in this category of 9% compared to weighted average credit support of 22%. As of December 31, 2020, all of the impaired securities in this category were externally rated AA.

Loans and Allowance for Credit Losses

12 Months Ended

Dec. 31, 2020

Receivables [Abstract]

Loans and Allowance for Credit Losses

At December 31, 2020 and 2019, loans consisted of the following (dollars in thousands):



	2020				2019
	Total		Percent of Total		Total		Percent of Total
Residential and other consumer:
1-4 single family residential	$	4,922,836	20.6	%	$	4,953,936	21.4	%
Government insured residential	1,419,074		5.9	%	698,644		3.0	%
Other consumer loans	6,312		0.1	%	8,539		0.1	%
	6,348,222		26.6	%	5,661,119		24.5	%
Commercial:
Multi-family	1,639,201		6.9	%	2,217,705		9.6	%
Non-owner occupied commercial real estate	4,963,273		20.8	%	5,030,904		21.7	%
Construction and land	293,307		1.2	%	243,925		1.1	%
Owner occupied commercial real estate	2,000,770		8.4	%	2,062,808		8.9	%
Commercial and industrial	4,447,383		18.6	%	4,655,349		20.1	%
PPP	781,811		3.3	%	—		—	%
Pinnacle	1,107,386		4.6	%	1,202,430		5.2	%
Bridge - franchise finance	549,733		2.3	%	627,482		2.6	%
Bridge - equipment finance	475,548		2.0	%	684,794		3.0	%
Mortgage warehouse lending	1,259,408		5.3	%	768,472		3.3	%
	17,517,820		73.4	%	17,493,869		75.5	%
Total loans	23,866,042		100.0	%	23,154,988		100.0	%
Allowance for credit losses	(257,323)				(108,671)
Loans, net	$	23,608,719			$	23,046,317

Premiums, discounts and deferred fees and costs, excluding the non-credit related discount on PCD loans, totaled $39 million and $50 million at December 31, 2020 and 2019, respectively. The amortized cost basis of residential PCD loans was $118 million and the related amount of non-credit discount was $115 million at December 31, 2020. The ACL related to PCD residential loans was $2.8 million and $1.7 million at December 31, 2020 and January 1, 2020, the date of initial adoption of ASU 2016-13, respectively.

During the years ended December 31, 2020 and 2019, the Company purchased 1-4 single family residential loans totaling $3.2 billion and $2.2 billion, respectively. Purchases for the years ended December 31, 2020 and 2019 included $1.4 billion, and $844 million, respectively, of government insured residential loans.

At December 31, 2020 and 2019, the Company had pledged loans with a carrying value of approximately $9.6 billion and $10.2 billion, respectively, as security for FHLB advances and Federal Reserve discount window capacity.

At December 31, 2020 and 2019, accrued interest receivable on loans, net of related ACL, totaled $99 million and $83 million, respectively, and is included in other assets in the accompanying consolidated balance sheets. The amount of interest income reversed on non-accrual loans totaled $3.5 million for the year ended December 31, 2020.

Allowance for credit losses

Activity in the allowance for credit losses is summarized below. The balances for the years ended December 31, 2019 and 2018 represent the allowance for loan and leases losses, estimated using an incurred loss methodology. The ACL at December 31, 2020 was determined using the CECL methodology, utilizing a 2-year reasonable and supportable forecast period based on a single economic scenario (in thousands):



	2020						2019						2018
	Residential and Other Consumer		Commercial		Total		Residential and Other Consumer		Commercial		Total		Residential and Other Consumer		Commercial		Total
Beginning balance	$	11,154	$	97,517	$	108,671	$	10,788	$	99,143	$	109,931	$	10,720	$	134,075	$	144,795
Impact of adoption of ASU 2016-13	8,098		19,207		27,305		—		—		—		—		—		—
Balance after adoption of ASU 2016-13	19,252		116,724		135,976		10,788		99,143		109,931		10,720		134,075		144,795
Provision (recovery)	(556)		182,895		182,339		154		8,750		8,904		1,032		24,893		25,925
Charge-offs(1)(2)	(31)		(69,571)		(69,602)		—		(17,541)		(17,541)		(1,465)		(65,619)		(67,084)
Recoveries	54		8,556		8,610		212		7,165		7,377		501		5,794		6,295
Ending balance	$	18,719	$	238,604	$	257,323	$	11,154	$	97,517	$	108,671	$	10,788	$	99,143	$	109,931

(1)Includes $14.7 million of charge-offs related to $49.6 million of classified loans that were sold or transferred to held for sale during the year ended December 31, 2020.

(2)Includes charge-offs of $39.7 million related to taxi medallion loans during the year ended December 31, 2018.

The following table presents the components of the provision for credit losses for the year ended December 31, 2020 (in thousands):


Amount related to funded portion of loans	$	182,339
Amount related to off-balance sheet credit exposures	(5,572)
Amount related to accrued interest receivable	1,300
Provision for credit losses - AFS debt securities	364
Total provision for credit losses	$	178,431

The increase in the ACL from January 1, 2020, the date of initial adoption of ASU 2016-13, to December 31, 2020 was reflective of the impact of the COVID-19 pandemic on current economic conditions, the economic forecast and on individual borrowers and portfolio sub-segments. The increase in charge-offs for the year ended December 31, 2020 also reflected the impact of the COVID-19 pandemic.

Credit quality information

The credit quality of the loan portfolio has been and is likely to continue to be impacted by the continuing COVID-19 crisis, its impact on the economy broadly and more specifically on the Company's individual borrowers. Significant uncertainty currently exists about the full extent of this impact, and the impact may not be fully reflected in some of the credit quality indicators disclosed below as of December 31, 2020, due to the still evolving trajectory of the pandemic. Delinquency statistics may not be fully reflective of the impact of the COVID-19 crisis due to deferral programs offered to affected borrowers.

Credit quality of loans held for investment is continuously monitored by dedicated residential credit risk management and commercial portfolio management functions. The Company also has a workout and recovery department that monitors the credit quality of criticized and classified loans and an independent internal credit review function.

Credit quality indicators for residential loans

Management considers delinquency status to be the most meaningful indicator of the credit quality of residential and other consumer loans, other than government insured residential loans. Delinquency statistics are updated at least monthly. LTV and FICO scores are also important indicators of credit quality for 1-4 single family residential loans other than government insured loans. FICO scores are generally updated at least annually, and were most recently updated in the third quarter of 2020. LTVs are typically at origination since we do not routinely update residential appraisals. Substantially all of the government insured residential loans are government insured buyout loans, which the Company buys out of GNMA securitizations upon default. For these loans, traditional measures of credit quality are not particularly relevant considering the guaranteed nature of the loans and the underlying business model. Factors that impact risk inherent in the residential portfolio segment include national and regional economic conditions such as levels of unemployment and wages, as well as residential property values.

1-4 Single Family Residential credit exposure, excluding government insured residential loans, based on delinquency status:


	December 31, 2020
	Amortized Cost By Origination Year
	2020		2019		2018		2017		2016		Prior		Total
Current	$	1,092,183	$	645,993	$	374,838	$	611,377	$	740,749	$	1,392,192	$	4,857,332
30 - 59 Days Past Due	17,826		5,741		2,564		927		2,913		18,880		48,851
60 - 89 Days Past Due	111		145		435		—		2,825		3,973		7,489
90 Days or More Past Due	—		807		1,762		53		1,027		5,515		9,164
	$	1,110,120	$	652,686	$	379,599	$	612,357	$	747,514	$	1,420,560	$	4,922,836


	December 31, 2019
	Amortized Cost By Origination Year
	2019		2018		2017		2016		2015		Prior		Total
Current	$	804,913	$	609,814	$	830,710	$	783,318	$	633,833	$	1,225,030	$	4,887,618
30 - 59 Days Past Due	13,915		3,003		3,751		8,419		4,308		12,238		45,634
60 - 89 Days Past Due	1,785		442		137		486		1,766		4,962		9,578
90 Days or More Past Due	—		1,762		914		—		5,030		3,400		11,106
	$	820,613	$	615,021	$	835,512	$	792,223	$	644,937	$	1,245,630	$	4,953,936

1-4 Single Family Residential credit exposure, excluding government insured residential loans, based on LTV:


	December 31, 2020
	Amortized Cost By Origination Year
LTV	2020		2019		2018		2017		2016		Prior		Total
Less than 61%	$	395,977	$	143,273	$	82,199	$	174,223	$	286,092	$	487,487	$	1,569,251
61% - 70%	298,941		151,633		92,928		119,381		184,119		341,159		1,188,161
71% - 80%	413,003		344,998		181,852		271,605		258,931		565,781		2,036,170
More than 80%	2,199		12,782		22,620		47,148		18,372		26,133		129,254
	$	1,110,120	$	652,686	$	379,599	$	612,357	$	747,514	$	1,420,560	$	4,922,836


	December 31, 2019
	Amortized Cost By Origination Year
LTV	2019		2018		2017		2016		2015		Prior		Total
Less than 61%	$	171,069	$	134,978	$	183,807	$	228,868	$	197,039	$	372,221	$	1,287,982
61% - 70 %	195,572		128,766		152,502		188,856		154,307		316,031		1,136,034
71% - 80%	442,311		313,779		404,743		338,000		283,202		531,377		2,313,412
More than 80%	11,661		37,498		94,460		36,499		10,389		26,001		216,508
	$	820,613	$	615,021	$	835,512	$	792,223	$	644,937	$	1,245,630	$	4,953,936

1-4 Single Family Residential credit exposure, excluding government insured residential loans, based on FICO score:


	December 31, 2020
	Amortized Cost By Origination Year
FICO	2020		2019		2018		2017		2016		Prior		Total
760 or greater	$	843,199	$	435,582	$	225,292	$	451,304	$	549,119	$	956,254	$	3,460,750
720 - 759	223,831		128,875		84,602		102,859		130,592		256,703		927,462
719 or less	43,090		88,229		69,705		58,194		67,803		207,603		534,624
	$	1,110,120	$	652,686	$	379,599	$	612,357	$	747,514	$	1,420,560	$	4,922,836


	December 31, 2019
	Amortized Cost By Origination Year
FICO	2019		2018		2017		2016		2015		Prior		Total
760 or greater	$	470,057	$	340,716	$	534,017	$	533,804	$	430,706	$	763,807	$	3,073,107
720 - 759	242,806		185,939		200,623		178,139		141,748		307,195		1,256,450
719 or less	107,750		88,366		100,872		80,280		72,483		174,628		624,379
	$	820,613	$	615,021	$	835,512	$	792,223	$	644,937	$	1,245,630	$	4,953,936

Credit quality indicators for commercial loans

Factors that impact risk inherent in commercial portfolio segments include but are not limited to levels of economic activity, health of the national and regional economy, industry trends, patterns of and trends in customer behavior that influence demand for our borrowers' products and services, and commercial real estate values. Internal risk ratings are considered the most meaningful indicator of credit quality for commercial loans. Internal risk ratings are generally indicative of the likelihood that a borrower will default, are a key factor influencing the level and nature of ongoing monitoring of loans and may impact the estimation of the ACL. Internal risk ratings are updated on a continuous basis. Generally, relationships with balances in excess of defined thresholds, ranging from $1 million to $3 million, are re-evaluated at least annually and more frequently if circumstances indicate that a change in risk rating may be warranted. Since the onset of the COVID-19 pandemic, risk ratings have been re-evaluated for a substantial portion of the commercial portfolio, with a focus on portfolio segments we identified for enhanced monitoring and loans that have been modified or for which we granted temporary payment deferrals. Loans exhibiting potential credit weaknesses that deserve management’s close attention and that could result in deterioration of repayment prospects at some future date if not checked or corrected are categorized as special mention. Loans with well-defined credit weaknesses, including payment defaults, declining collateral values, frequent overdrafts, operating losses, increasing balance sheet leverage, inadequate cash flow from current operations, project cost overruns, unreasonable construction delays, past due real estate taxes or exhausted interest reserves, are assigned an internal risk rating of substandard. A loan with a weakness so severe that collection in full is highly questionable or improbable, but because of certain reasonably specific pending factors has not been charged off, will be assigned an internal risk rating of doubtful.

Commercial credit exposure based on internal risk rating:


	December 31, 2020
	Amortized Cost By Origination Year												Revolving Loans
	2020		2019		2018		2017		2016		Prior				Total
Multi-Family
Pass	$	184,287	$	264,254	$	149,188	$	206,768	$	203,481	$	313,758	$	38,509	$	1,360,245
Special mention	—		390		10,985		11,260		8,400		5,300		—		36,335
Substandard	8,393		25,239		9,645		15,125		43,920		140,299		—		242,621

Total Multi-Family	$	192,680	$	289,883	$	169,818	$	233,153	$	255,801	$	459,357	$	38,509	$	1,639,201

Non-owner occupied commercial real estate
Pass	$	532,567	$	1,070,940	$	706,730	$	442,599	$	462,201	$	607,922	$	99,627	$	3,922,586
Special mention	2,687		56,533		16,271		34,283		43,699		66,370		—		219,843
Substandard	30,401		132,814		69,507		56,219		288,998		242,905		—		820,844

Total non-owner occupied commercial real estate	$	565,655	$	1,260,287	$	792,508	$	533,101	$	794,898	$	917,197	$	99,627	$	4,963,273

Construction and Land
Pass	$	20,860	$	158,413	$	9,003	$	48,657	$	26,845	$	904	$	297	$	264,979
Special mention	—		—		8,010		8,604		4,284		—		—		20,898
Substandard	23		1,366		1,287		—		4,408		346		—		7,430

Total Construction and Land	$	20,883	$	159,779	$	18,300	$	57,261	$	35,537	$	1,250	$	297	$	293,307

Owner occupied commercial real estate
Pass	$	229,670	$	263,138	$	251,413	$	232,171	$	288,403	$	361,130	$	17,281	$	1,643,206
Special mention	2,593		42,485		11,789		41,799		19,839		20,347		17,985		156,837
Substandard	2,615		24,673		21,114		36,411		26,997		79,860		9,057		200,727

Total owner occupied commercial real estate	$	234,878	$	330,296	$	284,316	$	310,381	$	335,239	$	461,337	$	44,323	$	2,000,770

Commercial and industrial
Pass	$	574,601	$	759,384	$	257,451	$	250,787	$	165,105	$	47,086	$	1,882,856	$	3,937,270
Special mention	10,387		49,471		17,096		2,451		20,838		2,977		66,385		169,605
Substandard	21,122		120,275		34,045		14,073		29,907		31,478		89,436		340,336
Doubtful	$	—	$	—	$	—	$	—	$	—	$	172	$	—	$	172
Total commercial and industrial	$	606,110	$	929,130	$	308,592	$	267,311	$	215,850	$	81,713	$	2,038,677	$	4,447,383

PPP
Pass	$	781,811	$	—	$	—	$	—	$	—	$	—	$	—	$	781,811
Total PPP	$	781,811	$	—	$	—	$	—	$	—	$	—	$	—	$	781,811

Pinnacle
Pass	$	165,218	$	118,139	$	70,498	$	208,568	$	203,990	$	340,973	$	—	$	1,107,386



Total Pinnacle	$	165,218	$	118,139	$	70,498	$	208,568	$	203,990	$	340,973	$	—	$	1,107,386

Bridge - Franchise Finance
Pass	$	48,741	$	91,509	$	23,650	$	8,745	$	11,817	$	6,416	$	—	$	190,878
Special mention	2,693		54,271		5,175		4,699		2,088		2,667		—		71,593
Substandard	36,515		101,772		84,064		33,213		16,706		3,297		—		275,567
Doubtful	—		—		10,771		—		924		—		—		11,695
Total Bridge - Franchise Finance	$	87,949	$	247,552	$	123,660	$	46,657	$	31,535	$	12,380	$	—	$	549,733

Bridge - Equipment Finance
Pass	$	23,684	$	137,730	$	66,004	$	50,000	$	36,963	$	49,875	$	—	$	364,256
Special mention	—		—		19,542		16,863		—		—		—		36,405
Substandard	—		30,762		9,894		34,231		—		—		—		74,887

Total Bridge - Equipment Finance	$	23,684	$	168,492	$	95,440	$	101,094	$	36,963	$	49,875	$	—	$	475,548

Mortgage Warehouse Lending
Pass	$	—	$	—	$	—	$	—	$	—	$	—	$	1,259,408	$	1,259,408



Total Mortgage Warehouse Lending	$	—	$	—	$	—	$	—	$	—	$	—	$	1,259,408	$	1,259,408

At December 31, 2020, the balance of revolving loans converted to term loans was immaterial.

The following tables summarize the Company's commercial credit exposure based on internal risk rating, in aggregate, at December 31, 2020 and 2019 (in thousands):



	2020
	Multi-Family		Non-Owner Occupied Commercial Real Estate		Construction and Land		Owner Occupied Commercial Real Estate		Commercial and Industrial		PPP		Pinnacle		Bridge - Franchise Finance		Bridge - Equipment Finance		Mortgage Warehouse Lending		Total
Pass	$	1,360,245	$	3,922,586	$	264,979	$	1,643,206	$	3,937,270	$	781,811	$	1,107,386	$	190,878	$	364,256	$	1,259,408	$	14,832,025
Special mention	36,335		219,843		20,898		156,837		169,605		—		—		71,593		36,405		—		711,516
Substandard - accruing	218,532		756,825		2,676		177,575		285,925		—		—		242,234		74,887		—		1,758,654
Substandard non-accruing	24,089		64,019		4,754		23,152		54,411		—		—		33,333		—		—		203,758
Doubtful	—		—		—		—		172		—		—		11,695		—		—		11,867
	$	1,639,201	$	4,963,273	$	293,307	$	2,000,770	$	4,447,383	$	781,811	$	1,107,386	$	549,733	$	475,548	$	1,259,408	$	17,517,820



	2019
	Multi-Family		Non-Owner Occupied Commercial Real Estate		Construction and Land		Owner Occupied Commercial Real Estate		Commercial and Industrial		Pinnacle		Bridge - Franchise Finance		Bridge - Equipment Finance		Mortgage Warehouse Lending		Total
Pass	$	2,184,771	$	4,932,279	$	240,734	$	1,991,556	$	4,508,563	$	1,202,430	$	562,042	$	663,855	$	768,472	$	17,054,702
Special mention	—		5,831		—		27,870		28,498		—		10,682		—		—		72,881
Substandard -accruing	26,797		52,697		—		16,241		43,518		—		41,127		—		—		180,380
Substandard non-accruing	6,137		40,097		3,191		27,141		74,770		—		13,631		20,939		—		185,906

	$	2,217,705	$	5,030,904	$	243,925	$	2,062,808	$	4,655,349	$	1,202,430	$	627,482	$	684,794	$	768,472	$	17,493,869

Past Due and Non-Accrual Loans:

The following table presents an aging of loans at December 31, 2020 and 2019 (in thousands):



	2020										2019
	Current		30 - 59 Days Past Due		60 - 89 Days Past Due		90 Days or More Past Due		Total		Current		30 - 59 Days Past Due		60 - 89 Days Past Due		90 Days or More Past Due		Total
1-4 single family residential	$	4,857,332	$	48,851	$	7,489	$	9,164	$	4,922,836	$	4,887,618	$	45,634	$	9,578	$	11,106	$	4,953,936
Government insured residential	722,367		77,883		56,495		562,329		1,419,074		93,560		45,347		30,426		529,311		698,644

Other consumer loans	6,022		37		22		231		6,312		8,539		—		—		—		8,539
Multi-family	1,602,990		17,842		—		18,369		1,639,201		2,217,705		—		—		—		2,217,705
Non-owner occupied commercial real estate	4,876,823		34,117		20,291		32,042		4,963,273		5,015,458		—		928		14,518		5,030,904
Construction and land	288,032		4,530		399		346		293,307		240,647		2,396		—		882		243,925
Owner occupied commercial real estate	1,971,475		10,756		3,203		15,336		2,000,770		2,041,352		1,336		4,420		15,700		2,062,808
Commercial and industrial	4,366,009		52,117		552		28,705		4,447,383		4,595,847		2,313		4,301		52,888		4,655,349
PPP	781,811		—		—		—		781,811		—		—		—		—		—
Pinnacle	1,107,386		—		—		—		1,107,386		1,202,430		—		—		—		1,202,430
Bridge - franchise finance	498,831		16,423		8,664		25,815		549,733		610,315		3,840		2,501		10,826		627,482
Bridge - equipment finance	475,548		—		—		—		475,548		677,089		7,705		—		—		684,794
Mortgage warehouse lending	1,259,408		—		—		—		1,259,408		768,472		—		—		—		768,472
	$	22,814,034	$	262,556	$	97,115	$	692,337	$	23,866,042	$	22,359,032	$	108,571	$	52,154	$	635,231	$	23,154,988

Included in the table above is the guaranteed portion of SBA loans past due by 90 days or more totaling $40.3 million and $36.3 million at December 31, 2020 and 2019, respectively.

Loans contractually delinquent by 90 days or more and still accruing totaled $562 million and $531 million at December 31, 2020 and 2019, respectively, substantially all of which were government insured residential loans. These loans are government insured pool buyout loans, which the Company buys out of GNMA securitizations upon default.

The following table presents information about loans on non-accrual status at December 31, 2020 and 2019 (in thousands):



	2020				2019
	Amortized Cost		Amortized Cost With No Related Allowance		Amortized Cost
Residential and other consumer	$	28,828	$	1,755	$	18,894
Commercial:
Multi-family	24,090		24,090		6,138
Non-owner occupied commercial real estate	64,017		32,843		40,097
Construction and land	4,754		4,408		3,191
Owner occupied commercial real estate	23,152		2,110		27,141
Commercial and industrial	54,584		9,235		74,757

Bridge - franchise finance	45,028		9,754		13,631
Bridge - equipment finance	—		—		20,939
	$	244,453	$	84,195	$	204,788

Included in the table above is the guaranteed portion of non-accrual SBA loans totaling $51.3 million and $45.7 million at December 31, 2020 and 2019, respectively. The amount of interest income recognized on non-accrual loans was immaterial for the years ended December 31, 2020 and 2019. The amount of additional interest income that would have been recognized on non-accrual loans had they performed in accordance with their contractual terms was approximately $10.9 million and $7.5 million for the years ended December 31, 2020 and 2019, respectively.

Collateral dependent loans:

The following table presents the amortized cost basis of collateral dependent loans at December 31, 2020 (in thousands):


	Amortized Cost		Extent to Which Secured by Collateral

Residential and other consumer	$	2,528	$	2,513
Commercial:
Multi-family	24,090		24,090
Non-owner occupied commercial real estate	52,813		52,435
Construction and land	4,754		4,754
Owner occupied commercial real estate	14,814		14,777
Commercial and industrial	28,112		18,093
Bridge - franchise finance	28,986		12,832

Total commercial	153,569		126,981
	$	156,097	$	129,494

Collateral for the multi-family, non-owner occupied commercial real estate and owner-occupied commercial real estate loan classes generally consists of commercial real estate. Collateral for construction and land loans is typically residential or commercial real estate. Collateral for commercial and industrial loans generally consists of equipment, accounts receivable, inventory and other business assets; owner-occupied commercial real estate loans may also be collateralized by these types of assets. Bridge franchise finance loans may be collateralized by franchise value or by equipment. Bridge equipment finance loans are secured by the financed equipment. Residential loans are collateralized by residential real estate. There have been no significant changes to the extent to which collateral secures collateral dependent loans during the year ended December 31, 2020.

Foreclosure of residential real estate

The recorded investment in residential loans in the process of foreclosure was $217 million, of which $209 million was government insured, at December 31, 2020 and $257 million, of which $248 million was government insured, at December 31, 2019. The carrying amount of foreclosed residential real estate included in other assets in the accompanying consolidated balance sheet was insignificant at December 31, 2020 and 2019. In response to the COVID-19 pandemic, new foreclosure actions on residential loans have been temporarily suspended.

Troubled debt restructurings

The following tables summarize loans that were modified in TDRs during the years ended December 31, 2020, 2019 and 2018, as well as loans modified during the twelve months preceding December 31, 2020, 2019 and 2018 that experienced payment defaults during those periods (dollars in thousands):


	Years Ended December 31,
	2020
	Loans Modified in TDRs During the Period			TDRs Experiencing Payment Defaults During the Period
	Number of TDRs	Amortized Cost		Number of TDRs	Amortized Cost
1-4 single family residential	1	$	201	—	$	—
Government insured residential	201	34,100		86	14,368


Non-owner occupied commercial real estate	1	4,122		1	4,122




Bridge - franchise finance	8	12,964		8	12,964

	211	$	51,387	95	$	31,454



	2019
	Loans Modified in TDRs During the Period			TDRs Experiencing Payment Defaults During the Period
	Number of TDRs	Amortized Cost		Number of TDRs	Amortized Cost
1-4 single family residential	2	$	557	—	$	—
Government insured residential	324	51,022		112	17,421


Non-owner occupied commercial real estate	1	11,496		—	—

Owner occupied commercial real estate	1	908		1	908
Commercial and industrial	7	20,239		2	8,673

Bridge - franchise finance	4	15,288		—	—

	339	$	99,510	115	$	27,002



	2018
	Loans Modified in TDRs During the Period			TDRs Experiencing Payment Defaults During the Period
	Number of TDRs	Amortized Cost		Number of TDRs	Amortized Cost
1-4 single family residential	10	$	3,669	3	$	929
Government insured residential	26	2,793		15	1,560


Non-owner occupied commercial real estate	3	5,932		1	2,949

Owner occupied commercial real estate	2	1,076		—	—
Commercial and industrial	6	6,646		2	217



	47	$	20,116	21	$	5,655

TDRs during the years ended December 31, 2020, 2019 and 2018 included interest rate reductions, restructuring of the amount and timing of required periodic payments, extensions of maturity and covenant waivers. Included in TDRs are residential loans to borrowers who have not reaffirmed their debt discharged in Chapter 7 bankruptcy. The total amount of such loans is not material. The majority of loan modifications or deferrals and payment deferrals that took place after the onset of the COVID-19 pandemic have not been categorized as TDRs, in accordance with interagency and authoritative guidance and the provisions of the CARES Act.

Loan Concentrations

The following table presents the five states with the largest geographic concentrations of 1-4 single family residential loans, excluding government insured residential loans, at December 31, 2020 and 2019 (dollars in thousands):



	2020				2019
	Total		Percent of Total		Total		Percent of Total
California	$	1,541,779	31.3	%	$	1,280,243	25.8	%
New York	1,084,143		22.0	%	1,057,926		21.4	%
Florida	518,877		10.5	%	597,359		12.1	%
Virginia	196,641		4.0	%	189,869		3.8	%
Washington DC	166,025		3.4	%	187,049		3.8	%
All others	1,415,371		28.8	%	1,641,490		33.1	%
	$	4,922,836	100.0	%	$	4,953,936	100.0	%

The following table presents the largest geographic concentrations of commercial loans at December 31, 2020 and 2019 (dollars in thousands):


	2020								2019
	Commercial Real Estate		Percent of Total		Commercial		Percent of Total		Commercial Real Estate		Percent of Total		Commercial		Percent of Total
Florida	$	3,659,310	53.1	%	$	4,044,377	38.1	%	$	3,476,657	46.4	%	$	4,051,924	40.5	%
New York Tri-state	2,652,980		38.5	%	2,570,974		24.2	%	3,423,564		45.7	%	2,110,915		21.1	%
California	1,003		—	%	775,989		7.3	%	249		—	%	719,465		7.2	%
Other	582,488		8.4	%	3,230,699		30.4	%	592,064		7.9	%	3,119,031		31.2	%
	$	6,895,781	100.0	%	$	10,622,039	100.0	%	$	7,492,534	100.0	%	$	10,001,335	100.0	%

Disclosures Prescribed by Legacy GAAP (Before Adoption of ASU 2016-13) for Prior Periods

For the years ended December 31, 2019 and prior, the Company maintained an ALLL estimated using an incurred loss methodology at an amount considered adequate by management to absorb probable incurred losses inherent in the loan portfolio at the balance sheet date. The ALLL consisted of both specific and general components and was established as losses were estimated to have occurred through a provision charged to earnings. Loans were charged off against the ALLL when management determined them to be uncollectible.

For commercial loans, the ALLL was comprised of specific reserves for loans that were individually evaluated and determined to be impaired as well as general reserves for loans that were not identified as impaired. For loans not individually evaluated for impairment, the quantitative portion of the ALLL was based on the Bank's historical net charge-off rates, for those segments which had sufficient observable loss history. For the segments that had not yet exhibited an observable loss trend, the quantitative loss factors were based on peer group average annual historical charge-off rates by loan class and the Company's internal credit risk rating system. For residential loans, the quantitative portion of the ALLL was based primarily on relevant proxy historical loss rates. No quantitative ALLL was provided for government insured residential loans. The general quantitative ALLL was calculated using a four quarter loss emergence period for all loan segments, with the exception of Pinnacle, which used a twelve quarter loss emergence period. For ACI loans, an ALLL was established when periodic evaluations of expected cash flows reflected a deterioration resulting from credit related factors. Expected cash flows were estimated on a pool basis for ACI residential loans. The analysis of expected cash flows incorporated expected prepayment rate, default rate, delinquency level and loss severity given default assumptions.

Qualitative adjustments were made to the ALLL when, based on management's judgment, there were internal or external factors impacting probable incurred losses not taken into account by the quantitative calculations. Potential qualitative adjustments included portfolio performance trends; changes in the nature of the portfolio and terms of the loans; portfolio growth trends; changes in lending policies and procedures; economic factors; change in the value of underlying collateral; quality of risk ratings; credit concentrations; and changes in and experience levels of credit administration staff.

The following table presents information about the balance of the ALLL and related loans as of December 31, 2019 (in thousands):



	Residential and Other Consumer		Commercial		Total
Allowance for loan and lease losses:
Ending balance	$	11,154	$	97,517	$	108,671
Ending balance: loans individually evaluated for impairment	$	9	$	20,481	$	20,490
Ending balance: loans collectively evaluated for impairment	$	11,145	$	77,036	$	88,181
Ending balance: ACI loans	$	—	$	—	$	—
Loans:
Ending balance	$	5,661,119	$	17,493,869	$	23,154,988
Ending balance: loans individually evaluated for impairment	$	57,117	$	187,788	$	244,905
Ending balance: loans collectively evaluated for impairment	$	5,454,422	$	17,288,901	$	22,743,323
Ending balance: ACI loans	$	149,580	$	17,180	$	166,760

The table below presents information about loans identified as impaired as of December 31, 2019 (in thousands):



	Recorded Investment		UPB		Related Specific Allowance
With no specific allowance recorded:
1-4 single family residential	$	992	$	989	$	—
Government insured residential	53,428		53,350		—


Multi-family	6,138		6,169		—
Non-owner occupied commercial real estate	38,345		38,450		—
Construction and land	3,191		3,155		—
Owner occupied commercial real estate	17,419		17,488		—
Commercial and industrial	10,585		10,574		—

Bridge - franchise finance	4,115		4,117		—
Bridge - equipment finance	6,807		6,793		—
With a specific allowance recorded:
1-4 single family residential	2,697		2,652		9






Owner occupied commercial real estate	2,522		2,509		401
Commercial and industrial	63,531		63,709		13,992

Bridge - franchise finance	21,011		21,050		2,953
Bridge - equipment finance	14,124		14,024		3,135
Total:
Residential and other consumer	$	57,117	$	56,991	$	9
Commercial	187,788		188,038		20,481
	$	244,905	$	245,029	$	20,490

The following table presents the average recorded investment in impaired loans for the years ended December 31, 2019 and 2018 (in thousands):



	2019		2018
Residential and other consumer:
1-4 single family residential	$	4,525	$	5,227
Government insured residential	18,574		1,426

	23,099		6,653
Commercial:
Multi-family	20,972		25,679
Non-owner occupied commercial real estate	25,814		14,106
Construction and land	7,621		6,551
Owner occupied commercial real estate	14,250		16,207
Commercial and industrial	36,698		97,388
Bridge - franchise finance	10,195		1,986
Bridge - equipment finance	13,981		7,771
	129,531		169,688
	$	152,630	$	176,341

Leases Leases

12 Months Ended

Dec. 31, 2020

Leases [Abstract]

Leases [Text Block]

Leases

Leases under which the Company is the lessee

The Company leases branches, office space and a small amount of equipment under either operating or finance leases with remaining terms ranging from one to 13 years, some of which include extension options.

The following table presents ROU assets and lease liabilities as of December 31, 2020 and 2019 (in thousands):


	2020		2019
ROU assets:
Operating leases	$	84,874	$	92,553
Finance leases	29,119		31,587
	$	113,993	$	124,140
Lease liabilities:
Operating leases	$	93,678	$	102,264
Finance leases	32,563		34,248
	$	126,241	$	136,512

ROU assets and lease liabilities for operating leases are included in "other assets" and "other liabilities", respectively, in the accompanying consolidated balance sheets. ROU assets and lease liabilities for finance leases are included in "other assets" and "notes and other borrowings", respectively.

The weighted average remaining lease term and weighted average discount rate at December 31, 2020 and 2019 were:


	2020		2019
Weighted average remaining lease term:
Operating leases	7.2 years		7.7 years
Finance leases	12.7 years		13.6 years
Weighted average discount rate:
Operating leases	3.1	%	3.3	%
Finance leases	2.9	%	2.9	%

The following table presents the components of lease expense for the years ended December 31, 2020 and 2019 (in thousands):



	2020		2019
Operating lease cost:
Fixed costs	$	20,112	$	20,284
Impairment of ROU assets	108		1,278
Total operating lease cost	$	20,220	$	21,562

Finance lease cost:
Amortization of ROU assets	$	2,841	$	1,642
Interest on lease liabilities	921		1,002
Total finance lease cost	$	3,762	$	2,644

Variable lease cost	$	4,761	$	3,950

Short-term lease costs and sublease income were immaterial for the years ended December 31, 2020 and 2019.

Additional information related to operating and finance leases for the years ended December 31, 2020 and 2019 follows (in thousands):



	2020		2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from finance leases	$	921	$	1,002
Operating cash flows from operating leases	20,589		20,795
Financing cash flows from finance leases	2,980		2,529
	$	24,490	$	24,326

Lease liabilities recognized from obtaining ROU assets:
Operating lease liabilities recognized upon adoption of ASC 842	$	—	$	104,064
Operating leases	9,647		15,778
Finance leases	373		27,415
	$	10,020	$	147,257

Future lease payment obligations under leases with terms in excess of one year and a reconciliation to lease liabilities as of December 31, 2020 were as follows (in thousands):


	Operating Leases		Finance Leases		Total
Years ending December 31:
2021	$	19,949	$	3,213	$	23,162
2022	16,879		2,650		19,529
2023	14,431		2,666		17,097
2024	12,658		2,701		15,359
2025	9,966		2,774		12,740
Thereafter	31,072		25,223		56,295
Total future minimum lease payments	104,955		39,227		144,182
Less: interest component	(11,277)		(6,664)		(17,941)
Lease liabilities	$	93,678	$	32,563	$	126,241

Leases under which the Company is the lessor

Through its commercial lending subsidiaries, Pinnacle and Bridge, the Bank provides equipment financing using a variety of loan and lease structures. Pinnacle provides essential use equipment financing to state and local governmental entities. Bridge provides primarily transportation equipment financing.

Direct or Sales Type Financing Leases

The following table presents the components of the investment in direct or sales type financing leases, included in loans in the consolidated balance sheets as of December 31, 2020 and 2019 (in thousands):


	2020		2019
Total minimum lease payments to be received	$	727,401	$	804,103
Estimated unguaranteed residual value of leased assets	5,599		8,471
Gross investment in direct or sales type financing leases	733,000		812,574
Unearned income	(66,443)		(84,175)
Initial direct costs	3,306		4,453
	$	669,863	$	732,852

At December 31, 2020, future minimum lease payments to be received under direct or sales type financing leases were as follows (in thousands):


Years Ending December 31:
2021	$	192,486
2022	140,263
2023	109,887
2024	66,254
2025	49,463
Thereafter	169,048
	$	727,401

Operating Lease Equipment

Operating lease equipment consists primarily of railcars, non-commercial aircraft and other transportation equipment leased to commercial end users. Original lease terms generally range from three to ten years. Asset risk is evaluated and managed by a dedicated internal staff of seasoned equipment finance professionals with a broad depth and breadth of experience in the leasing business. The Company has partnered with an industry leading, experienced service provider who provides fleet management and servicing relating to the railcar fleet. Residual risk is managed by setting appropriate residual values at inception and systematic reviews of residual values based on independent appraisals, performed at least annually. The Company endeavors to lease to a stable end user base, maintain a relatively young and diversified fleet of assets and stagger lease maturities.

The following table presents the components of operating lease equipment as of December 31, 2020 and 2019 (in thousands):


	2020		2019
Operating lease equipment	$	844,953	$	844,015
Less: accumulated depreciation	(181,436)		(145,862)
Operating lease equipment, net	$	663,517	$	698,153

The Company recognized impairment of $0.7 million, and $1.9 million during the years ended December 31, 2020 and 2019, respectively. These impairment charges are included in "depreciation of operating lease equipment" in the accompanying consolidated statements of income. No impairment was recognized during the year ended December 31, 2018.

At December 31, 2020, scheduled minimum rental payments under operating leases were as follows (in thousands):


Years Ending December 31:
2021	$	49,246
2022	44,525
2023	38,263
2024	33,856
2025	27,612
Thereafter	54,845
	$	248,347

The following table summarizes lease income recognized for operating leases and direct or sales type finance leases for the years ended December 31, 2020 and 2019 (in thousands):


	2020		2019		Location of Lease Income on Consolidated Statements of Income
Operating leases	$	59,112	$	66,631	Non-interest income from lease financing
Direct or sales type finance leases	20,995		21,865		Interest income on loans
	$	80,107	$	88,496

Deposits

12 Months Ended

Dec. 31, 2020

Brokers and Dealers [Abstract]

Deposit Liabilities Disclosures [Text Block]

Deposits

The following table presents average balances and weighted average rates paid on deposits for the years ended December 31, 2020, 2019 and 2018 (dollars in thousands):


	2020				2019				2018
	Average Balance		Average Rate Paid		Average Balance		Average Rate Paid		Average Balance		Average Rate Paid
Demand deposits:
Non-interest bearing	$	5,760,309	—	%	$	3,950,612	—	%	$	3,389,191	—	%
Interest bearing	2,582,951		0.75	%	1,824,803		1.37	%	1,627,828		1.13	%
Savings and money market	10,843,894		0.79	%	10,922,819		1.81	%	10,634,970		1.38	%
Time	6,617,939		1.43	%	6,928,499		2.34	%	6,617,006		1.81	%
	$	25,805,093	0.77	%	$	23,626,733	1.63	%	$	22,268,995	1.28	%

Time deposit accounts with balances of $250,000 or more totaled $1.1 billion and $1.9 billion at December 31, 2020 and 2019, respectively.

The following table presents maturities of time deposits as of December 31, 2020 (in thousands):


Maturing in:
2021	$	4,655,878
2022	110,183
2023	24,368
2024	1,302
2025	15,468

	$	4,807,199

Included in deposits at December 31, 2020 are public funds deposits of $2.5 billion and brokered deposits of $4.0 billion. Investment securities available for sale with a carrying value of $952 million were pledged as security for public funds deposits at December 31, 2020.

Interest expense on deposits for the years ended December 31, 2020, 2019 and 2018 was as follows (in thousands):


	2020		2019		2018
Interest bearing demand	$	19,445	$	25,054	$	18,391
Savings and money market	85,572		197,942		146,324
Time	94,963		162,184		119,848
	$	199,980	$	385,180	$	284,563

Federal Home Loan Bank Advances and Other Borrowings

12 Months Ended

Dec. 31, 2020

Federal Home Loan Banks [Abstract]

Federal Home Loan Bank Advances, Disclosure [Text Block]

Borrowings

The following table presents information about outstanding FHLB advances as of December 31, 2020 (dollars in thousands):


			Range of Interest Rates
	Amount		Minimum		Maximum		Weighted Average Rate
Maturing in:
2021 - One month or less	$	795,000	0.24	%	0.25	%	0.25	%
2021 - Over one month	2,226,000		0.22	%	3.02	%	0.54	%


Thereafter	100,000		0.41	%	0.41	%	0.41	%
Total contractual balance outstanding	3,121,000
Cumulative fair value hedging adjustments	1,999
Carrying value	$	3,122,999

The table above reflects contractual maturities of outstanding advances and does not incorporate the impact that interest rate swaps designated as cash flow and fair value hedges have on the duration of borrowings.

The terms of the Company's security agreement with the FHLB require a specific assignment of collateral consisting of qualifying first mortgage loans, commercial real estate loans, home equity lines of credit and mortgage-backed securities with unpaid principal amounts discounted at various stipulated percentages at least equal to 100% of outstanding FHLB advances. As of December 31, 2020, the Company had pledged investment securities and real estate loans with an aggregate carrying amount of approximately $10.9 billion as collateral for advances from the FHLB.

At December 31, 2020 and 2019 notes and other borrowings consisted of the following (dollars in thousands):


	2020		2019
Senior notes:
Principal amount of 4.875% senior notes maturing on November 17, 2025	$	400,000	$	400,000
Unamortized discount and debt issuance costs	(4,174)		(4,910)
	395,826		395,090
Subordinated notes:
Principal amount of 5.125% subordinated notes maturing on June 11, 2030	300,000		—
Unamortized discount and debt issuance costs	(5,894)		—
	294,106		—
Total notes	689,932		395,090
Finance leases	32,563		34,248
Notes and other borrowings	$	722,495	$	429,338

The senior notes mature on November 17, 2025 with interest payable semiannually. The notes have an effective interest rate of 5.12%, after consideration of issuance discount and costs. The notes may be redeemed by the Company, in whole or in part, at any time prior to August 17, 2025 at the greater of a) 100% of the principal balance or b) the sum of the present values of the remaining scheduled payments of principal and interest on the securities discounted to the redemption date at i) the rate on a United States Treasury security with a maturity comparable to the remaining maturity of the senior notes that would be used to price new issues of corporate debt securities with a maturity comparable to the remaining maturity of the senior notes plus ii) 40 basis points. The senior notes may be redeemed at any time after August 17, 2025 at 100% of principal plus accrued and unpaid interest.

On June 11, 2020, the Company issued $300 million of 5.125% subordinated notes. The notes mature on June 11, 2030 with interest payable semiannually. The notes have an effective interest rate of 5.39% after consideration of issuance discount and costs. The notes may be redeemed by the Company, in whole or in part, on or after March 11, 2030 at a redemption price equal to 100% of the principal amount being redeemed plus accrued and unpaid interest, subject to the approval of the Federal Reserve. The notes qualify as Tier 2 capital for regulatory capital purposes, subject to applicable limitations.

At December 31, 2020, BankUnited had available borrowing capacity at the FHLB of approximately $4.9 billion, unused borrowing capacity at the FRB of approximately $2.1 billion and unused Federal funds lines of credit with other financial institutions totaling $50 million.

Premises and Equipment and Lease Commitments

12 Months Ended

Dec. 31, 2020

Property, Plant and Equipment, Type [Abstract]

Property, Plant and Equipment Disclosure [Text Block]

Premises, Equipment and Software

Premises and equipment and capitalized software costs are included in other assets in the accompanying consolidated balance sheets and are summarized as follows as of December 31, 2020 and 2019 (in thousands):


	2020		2019
Buildings and improvements	$	430	$	—
Leasehold improvements	69,863		72,627
Furniture, fixtures and equipment	35,903		36,492
Computer equipment	21,358		22,729
Software, software licensing rights and capitalized costs of CCA	74,087		59,568
Aircraft and automobiles	11,620		11,593

	213,261		203,009
Less: accumulated depreciation	(153,138)		(144,905)
Premises, equipment and software, net	$	60,123	$	58,104

Buildings held for sale, net	$	1,427	$	6,789

Depreciation and amortization expense related to premises, equipment and software was $15.7 million, $19.2 million and $17.5 million for the years ended December 31, 2020, 2019 and 2018, respectively. The Company measures assets held for sale at the lower of carrying amount or estimated fair value.

Income Taxes

12 Months Ended

Dec. 31, 2020

Income Tax Disclosure [Abstract]

Income Taxes

The components of the provision for income taxes for the years ended December 31, 2020, 2019 and 2018 were

as follows (in thousands):


	2020		2019		2018
Current:
Federal	$	63,083	$	58,996	$	2,172
State	16,009		7,373		20,834
	79,092		66,369		23,006
Deferred:
Federal	(22,387)		8,255		51,303
State	(5,199)		16,274		16,475
	(27,586)		24,529		67,778
	$	51,506	$	90,898	$	90,784

A reconciliation of expected income tax expense at the statutory federal income tax rate of 21% for the years ended December 31, 2020, 2019 and 2018 to the Company's effective income tax rate follows (dollars in thousands):


	2020				2019				2018
	Amount		Percent		Amount		Percent		Amount		Percent
Tax expense calculated at the statutory federal income tax rate	$	52,366	21.00	%	$	84,839	21.00	%	$	87,286	21.00	%
Increases (decreases) resulting from:
Income not subject to tax	(15,722)		(6.30)	%	(17,950)		(4.44)	%	(18,923)		(4.55)	%
State income taxes, net of federal tax benefit	13,413		5.38	%	19,956		4.94	%	31,182		7.50	%


Other, net	1,449		0.58	%	4,053		1.00	%	(8,761)		(2.11)	%
	$	51,506	20.66	%	$	90,898	22.50	%	$	90,784	21.84	%

The components of deferred tax assets and liabilities at December 31, 2020 and 2019 were as follows (in thousands):


	2020		2019
Deferred tax assets:
Excess of tax basis over carrying value of acquired loans	$	33,532	$	50,089
Allowance for credit losses	58,990		23,151

Net unrealized loss on investment securities available for sale and cash flow hedges	16,824		11,475
Other	74,228		61,152
Gross deferred tax assets	183,574		145,867
Deferred tax liabilities:

Lease financing, due to differences in depreciation	169,103		176,269
Other	34,879		31,227
Gross deferred tax liabilities	203,982		207,496
Net deferred tax liability	$	(20,408)	$	(61,629)

Based on the evaluation of available evidence, the Company has concluded that it is more likely than not that the existing deferred tax assets will be realized. The primary factor supporting this conclusion is the amount of future taxable income that will result from the scheduled reversal of existing deferred tax liabilities.

At December 31, 2020, remaining net operating loss and tax credit carryforwards included federal net operating loss carryforwards in the amount of $3.0 million, expiring from 2029 through 2032, and Florida net operating loss carryforwards in

the amount of $110.7 million. Florida net operating loss carryforwards consisted of $100.7 million expiring from 2030 through 2037 and $10.0 million that can be carried forward indefinitely.

The Company has investments in affordable housing limited partnerships which generate federal Low Income Housing Tax Credits and other tax benefits. The balance of these investments, included in other assets in the accompanying consolidated balance sheet, was $50 million and $57 million at December 31, 2020 and 2019, respectively. Unfunded commitments for affordable housing investments, included in other liabilities in the accompanying consolidated balance sheet, were $4 million and $8 million at December 31, 2020 and 2019, respectively. The maximum exposure to loss as a result of the Company's involvement with these limited partnerships at December 31, 2020 was approximately $79 million. While the Company believes the likelihood of potential losses from these investments is remote, the maximum exposure was determined by assuming a scenario where the projects completely fail and do not meet certain government compliance requirements resulting in recapture of the related tax credits. These investments did not have a material impact on income tax expense for the years ended December 31, 2020, 2019 and 2018.

The Company has a liability for unrecognized tax benefits relating to uncertain federal and state tax positions in several jurisdictions. A reconciliation of the beginning and ending amount of gross unrecognized tax benefits for the years ended December 31, 2020, 2019 and 2018 follows (in thousands):


	2020		2019		2018
Balance, beginning of period	$	407,126	$	116,081	$	59,220
Additions for tax positions related to the current year	2,117		5,352		2,399
Additions for tax positions related to prior periods	2,456		279,885		51,064

Reductions due to settlements with taxing authorities	(3,080)		—		—
Reductions due to lapse of the statute of limitations	(520)		(406)		(675)
	408,099		400,912		112,008
Interest and penalties	6,104		6,214		4,073
Balance, end of period	$	414,203	$	407,126	$	116,081

As of December 31, 2020, 2019 and 2018, the Company had $369.1 million, $368.9 million and $78.2 million of unrecognized federal and state tax benefits, net of federal tax benefits, that if recognized would have impacted the effective tax rate. Unrecognized tax benefits related to federal and state income tax contingencies that may decrease during the 12 months subsequent to December 31, 2020 as a result of settlements with taxing authorities range from zero to $358.7 million.

Interest and penalties related to unrecognized tax benefits are included in the provision for income taxes in the consolidated statements of income. At December 31, 2020 and 2019, accrued interest and penalties included in the consolidated balance sheets, net of federal tax benefits, were $16.3 million and $11.4 million, respectively. The total amounts of interest and penalties, net of federal tax benefits, recognized through income tax expense was $4.9 million during each of the years ended December 31, 2020 and 2019, and $3.2 million during the year ended December 31, 2018.

The Company and its subsidiaries file a consolidated federal income tax return as well as combined state income tax returns where combined filings are required. The federal tax returns for years 2017 through 2019 remain subject to examination in the U.S. Federal jurisdiction. State tax returns for years 2009 through 2019 remain subject to examination by certain states.

Derivatives and Hedging Activities

12 Months Ended

Dec. 31, 2020

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivatives and Hedging Activities

The Company enters into LIBOR-based interest rate swaps and caps that are designated as cash flow hedges with the objective of limiting the variability of interest payment cash flows. The Company also enters into LIBOR-based interest rate swaps designated as fair value hedges designed to hedge changes in the fair value of outstanding fixed rate borrowings caused by fluctuations in the benchmark interest rate.

The Company enters into interest rate derivative contracts with certain of its commercial borrowers to enable those borrowers to manage their exposure to interest rate fluctuations. To mitigate interest rate risk associated with these derivative contracts, the Company enters into offsetting derivative contract positions with primary dealers. These interest rate derivative contracts are not designated as hedging instruments; therefore, changes in the fair value of these derivatives are recognized immediately in earnings. For the years ended December 31, 2020, 2019, and 2018 the impact on earnings, included in other

non-interest income in the accompanying consolidated statements of income, related to changes in fair value of these derivatives was not material.

The Company may be exposed to credit risk in the event of non-performance by the counterparties to its interest rate derivative agreements. The Company assesses the credit risk of its financial institution counterparties by monitoring publicly available credit rating and financial information. The Company manages dealer credit risk by entering into interest rate derivatives only with primary and highly rated counterparties, the use of ISDA master agreements, central clearing mechanisms and counterparty limits. The agreements contain bilateral collateral arrangements with the amount of collateral to be posted generally governed by the settlement value of outstanding swaps. The Company manages the risk of default by its commercial borrower counterparties through its normal loan underwriting and credit monitoring policies and procedures. The Company does not currently anticipate any significant losses from failure of interest rate derivative counterparties to honor their obligations.

The CME legally characterizes variation margin payments for centrally cleared derivatives as settlements of the derivatives' exposures rather than collateral. As a result, the variation margin payment and the related derivative instruments are considered a single unit of account for accounting and financial reporting purposes. The Company's clearing agent for interest rate derivative contracts centrally cleared through the CME settles the variation margin daily with the CME; therefore, those interest rate derivative contracts the Company clears through the CME are reported at a fair value of approximately zero at both December 31, 2020 and 2019.

The following tables set forth certain information concerning the Company’s interest rate contract derivative financial instruments and related hedged items at the dates indicated (dollars in thousands):



	2020
		Weighted Average Pay Rate	Weighted Average Receive Rate	Weighted Average Remaining Life in Years
					Notional Amount		Balance Sheet Location	Fair Value
	Hedged Item							Asset		Liability
Derivatives designated as cash flow hedges:
Pay-fixed interest rate swaps	Variability of interest cash flows on variable rate borrowings	2.41%	3-Month LIBOR	2.5	$	2,771,000	Other liabilities	$	—	$	(5,971)
Interest rate caps purchased, indexed to Fed Funds effective rate	Variability of interest cash flows on variable rate borrowings	—%	—%	4.9	100,000		Other assets	485		—
Derivatives designated as fair value hedges:
Receive-fixed interest rate swaps	Variability of fair value of fixed rate borrowings	3-Month LIBOR	1.55%	0.6	250,000		Other liabilities	—		—
Derivatives not designated as hedges:
Pay-fixed interest rate swaps		3.61%	Indexed to 1-month LIBOR	5.3	1,626,152		Other assets / Other liabilities	—		(38,519)
Pay-variable interest rate swaps		Indexed to 1-month LIBOR	3.61%	5.3	1,626,152		Other assets	123,345		—
Interest rate caps purchased, indexed to 1-month LIBOR			3.72%	0.4	25,921		Other assets	—		—
Interest rate caps sold, indexed to 1-month LIBOR		3.72%		0.4	25,921		Other liabilities	—		—
					$	6,425,146		$	123,830	$	(44,490)



	2019
		Weighted Average Pay Rate	Weighted Average Receive Rate	Weighted Average Remaining Life in Years
					Notional Amount		Balance Sheet Location	Fair Value
	Hedged Item							Asset		Liability
Derivatives designated as cash flow hedges:
Pay-fixed interest rate swaps	Variability of interest cash flows on variable rate borrowings	2.37%	3-Month LIBOR	3.2	$	3,131,000	Other liabilities	$	—	$	(1,607)
Derivatives designated as fair value hedges:
Receive-fixed interest rate swaps	Variability of interest cash flows on fixed rate borrowings	3-Month LIBOR	1.55%	1.6	250,000		Other liabilities	—		—
Derivatives not designated as hedges
Pay-fixed interest rate swaps		3.72%	Indexed to 1-month LIBOR	6.4	1,460,355		Other assets / Other liabilities	876		(15,307)
Pay-variable interest rate swaps		Indexed to 1-month LIBOR	3.72%	6.4	1,460,355		Other assets / Other liabilities	42,810		(2,115)
Interest rate caps purchased, indexed to 1-month LIBOR			3.30%	0.6	61,004		Other assets	—		—
Interest rate caps sold, indexed to 1-month LIBOR		3.30%		0.6	61,004		Other liabilities	—		—
					$	6,423,718		$	43,686	$	(19,029)

The following table provides information about the amount of gain (loss) related to derivatives designated as cash flow hedges reclassified from AOCI into interest expense for the years ended December 31, 2020, 2019 and 2018 (in thousands):



	2020		2019		2018		Location of Gain (Loss) Reclassified from AOCI into Income
Interest rate contracts	$	(46,259)	$	2,627	$	1,999	Interest expense on borrowings

During the years ended December 31, 2020, 2019, 2018 no derivative positions designated as cash flow hedges were discontinued and none of the gains and losses reported in AOCI were reclassified into earnings as a result of the discontinuance of cash flow hedges or because of the early extinguishment of debt. As of December 31, 2020, the amount of net loss expected to be reclassified from AOCI into earnings during the next twelve months was $53.5 million.

The following table provides information about the amount of gain (loss) related to derivatives designated as fair value hedges recognized in earnings for the years ended December 31, 2020, 2019 and 2018 (in thousands):



	2020		2019		2018		Location of Gain (Loss) in Consolidated Statements of Income
Fair value adjustment on derivatives	$	2,485	$	(486)	$	—	Interest expense on borrowings
Fair value adjustment on hedged items	(2,498)		499		—		Interest expense on borrowings
Gain (loss) recognized on fair value hedges (ineffective portion)	$	(13)	$	13	$	—

The following table provides information about the hedged items related to derivatives designated as fair value hedges at December 31, 2020 and 2019 (in thousands):


	2020		2019		Location in Consolidated Balance Sheets
Contractual balance outstanding of hedged item	$	250,000	$	250,000	FHLB advances
Cumulative fair value hedging adjustments	$	1,999	$	(499)	FHLB advances

Some of the Company’s ISDA master agreements with financial institution counterparties contain provisions that permit either counterparty to terminate the agreements and require settlement in the event that regulatory capital ratios fall below

certain designated thresholds, upon the initiation of other defined regulatory actions or upon suspension or withdrawal of the Bank’s credit rating. Currently, there are no circumstances that would trigger these provisions of the agreements.

The Company does not offset assets and liabilities under master netting agreements for financial reporting purposes. Information on interest rate swaps subject to these agreements is as follows at December 31, 2020 and 2019 (dollars in thousands):



	2020
			Gross Amounts Offset in Balance Sheet		Net Amounts Presented in Balance Sheet		Gross Amounts Not Offset in Balance Sheet
	Gross Amounts Recognized						Derivative Instruments		Collateral Pledged		Net Amount
Derivative assets	$	—	$	—	$	—	$	—	$	—	$	—
Derivative liabilities	(44,490)		—		(44,490)		—		44,332		(158)
	$	(44,490)	$	—	$	(44,490)	$	—	$	44,332	$	(158)



	2019
			Gross Amounts Offset in Balance Sheet		Net Amounts Presented in Balance Sheet		Gross Amounts Not Offset in Balance Sheet
	Gross Amounts Recognized						Derivative Instruments		Collateral Pledged		Net Amount
Derivative assets	$	876	$	—	$	876	$	(876)	$	—	$	—
Derivative liabilities	(16,914)		—		(16,914)		876		16,038		—
	$	(16,038)	$	—	$	(16,038)	$	—	$	16,038	$	—

The difference between the amounts reported for interest rate swaps subject to master netting agreements and the total fair value of interest rate contract derivative financial instruments reported in the consolidated balance sheets is related to interest rate derivative contracts not subject to master netting agreements.

At December 31, 2020, the Company had pledged net financial collateral of $58.9 million as collateral for interest rate swaps in a liability position that are not centrally cleared. The amount of collateral required to be posted varies based on the settlement value of outstanding swaps and in some cases may include initial margin requirements.

Stockholders' Equity

12 Months Ended

Dec. 31, 2020

Equity [Abstract]

Stockholders' Equity

Note 11 Stockholders’ Equity

Accumulated Other Comprehensive Income

Changes in other comprehensive income are summarized as follows for the years ended December 31, 2020, 2019 and 2018 (in thousands):



	2020
	Before Tax		Tax Effect		Net of Tax
Unrealized gains on investment securities available for sale:
Net unrealized holding gain arising during the period	$	61,291	$	(15,246)	$	46,045
Amounts reclassified to gain on investment securities available for sale, net	(14,001)		3,570		(10,431)
Net change in unrealized gains on investment securities available for sale	47,290		(11,676)		35,614
Unrealized losses on derivative instruments:
Net unrealized holding loss arising during the period	(116,168)		28,766		(87,402)
Amounts reclassified to interest expense on borrowings	46,259		(11,796)		34,463
Net change in unrealized losses on derivative instruments	(69,909)		16,970		(52,939)
Other comprehensive loss	$	(22,619)	$	5,294	$	(17,325)


	2019
	Before Tax		Tax Effect		Net of Tax
Unrealized gains on investment securities available for sale:
Net unrealized holding gain arising during the period	$	51,178	$	(13,562)	$	37,616
Amounts reclassified to gain on investment securities available for sale, net	(18,537)		4,912		(13,625)
Net change in unrealized gains on investment securities available for sale	32,641		(8,650)		23,991
Unrealized losses on derivative instruments:
Net unrealized holding loss arising during the period	(79,945)		21,185		(58,760)
Amounts reclassified to interest expense on borrowings	(2,627)		696		(1,931)
Net change in unrealized losses on derivative instruments	(82,572)		21,881		(60,691)
Other comprehensive loss	$	(49,931)	$	13,231	$	(36,700)



	2018
	Before Tax		Tax Effect		Net of Tax
Unrealized gains on investment securities available for sale:
Net unrealized holding loss arising during the period	$	(77,607)	$	20,566	$	(57,041)
Amounts reclassified to gain on investment securities available for sale, net	(6,103)		1,617		(4,486)
Net change in unrealized gains on investment securities available for sale	(83,710)		22,183		(61,527)
Unrealized losses on derivative instruments:
Net unrealized holding gain arising during the period	5,416		(1,435)		3,981
Amounts reclassified to interest expense on borrowings	(1,999)		530		(1,469)
Net change in unrealized losses on derivative instruments	3,417		(905)		2,512
Other comprehensive loss	$	(80,293)	$	21,278	$	(59,015)

The categories of AOCI and changes therein are presented below for the years ended December 31, 2020, 2019 and 2018 (in thousands):



	Unrealized Gain on Investment Securities Available for Sale		Unrealized Gain (Loss) on Derivative Instruments		Total
Balance at December 31, 2017	$	56,534	$	(1,548)	$	54,986
Cumulative effect of adoption of new accounting standards	9,187		(285)		8,902
Other comprehensive loss	(61,527)		2,512		(59,015)
Balance at December 31, 2018	4,194		679		4,873
Other comprehensive loss	23,991		(60,691)		(36,700)
Balance at December 31, 2019	$	28,185	$	(60,012)	$	(31,827)

Other comprehensive loss	35,614		(52,939)		(17,325)
Balance at December 31, 2020	$	63,799	$	(112,951)	$	(49,152)

Other

In January 2021, the Company’s Board of Directors reinstated its share repurchase program, which was temporarily suspended in March 2020. Authorization to repurchase up to approximately $44.9 million in shares of its outstanding common stock remained under the share repurchase program at the date of the reinstatement. Any repurchases will be made in accordance with applicable securities laws from time to time in open market or private transactions. The program may be commenced, suspended or discontinued without prior notice.

Equity Based Compensation

12 Months Ended

Dec. 31, 2020

Share-based Payment Arrangement [Abstract]

Shareholders' Equity and Share-based Payments

Equity Based and Other Compensation Plans

Description of Equity Based Compensation Plans

In connection with the IPO of the Company's common stock in 2011, the Company adopted the 2010 Plan. In 2014, the Board of Directors and the Company's stockholders approved the 2014 Plan. The 2010 Plan and 2014 Plans are administered by the Board of Directors or a committee thereof and provide for the grant of non-qualified stock options, SARs, restricted shares, deferred shares, performance shares, unrestricted shares and other share-based awards to selected employees, directors or independent contractors of the Company and its affiliates. The number of shares of common stock authorized for award under the 2010 Plan is 7,500,000, of which 24,692 shares remain available for issuance as of December 31, 2020. The number of shares of common stock authorized for award under the 2014 Plan is 6,200,000, of which 2,781,048 shares remain available for issuance as of December 31, 2020. Shares of common stock delivered under the plans may consist of authorized but unissued shares or previously issued shares reacquired by the Company. The term of a share option or SAR issued under the plans may not exceed ten years from the date of grant and the exercise price may not be less than the fair market value of the Company's common stock at the date of grant. Unvested awards granted prior to 2019, become fully vested in the event of a change in control, as defined. Beginning in 2019, unvested awards granted are subject to a double trigger, as defined.

Compensation Expense Related to Equity Based Awards

The following table summarizes compensation cost related to equity based awards for the years ended December 31, 2020, 2019 and 2018 (in thousands):


	2020		2019		2018
Compensation cost of equity based awards:
Unvested and restricted share awards	$	15,236	$	17,334	$	19,415
Executive share-based awards	3,133		4,953		3,027
Incentive awards	2,145		1,189		798
Total compensation cost of equity based awards	20,514		23,476		23,240
Related tax benefits	(4,854)		(4,068)		(5,783)
Compensation cost of equity based awards, net of tax	$	15,660	$	19,408	$	17,457

Share Awards

Unvested share awards

A summary of activity related to unvested share awards for the years ended December 31, 2020, 2019 and 2018 follows:


	Number of Share Awards	Weighted Average Grant Date Fair Value
Unvested share awards outstanding, December 31, 2017	1,108,477	$	36.06
Granted	683,137	40.06
Vested	(532,662)	34.64
Canceled or forfeited	(72,714)	38.43
Unvested share awards outstanding, December 31, 2018	1,186,238	38.86
Granted	591,739	36.49
Vested	(561,769)	37.50
Canceled or forfeited	(165,753)	38.95
Unvested share awards outstanding, December 31, 2019	1,050,455	38.24
Granted	660,587	29.72
Vested	(479,057)	38.94
Canceled or forfeited	(70,150)	34.78
Unvested share awards outstanding, December 31, 2020	1,161,835	$	33.32

Unvested share awards are generally valued at the closing price of the Company's common stock on the date of grant. All shares granted prior to 2019 vest in equal annual installments over a period of three years from the date of grant. All shares granted in 2019 and 2020 to Company employees vest in equal annual installments over a period of four years from the date of grant. Shares granted to the Company's Board of Directors vest over a period of one year.

The following table summarizes the closing price of the Company's stock on the date of grant for shares granted and the aggregate grant date fair value of shares vesting for the years ended December 31, 2020, 2019 and 2018 (in thousands, except per share data):



	2020		2019		2018
Range of the closing price on date of grant (1)	$13.99 - $30.90		$31.07 - $36.65		$33.44 -$42.80
Aggregate grant date fair value of shares vesting	$	18,654	$	21,064	$	18,451

(1)During the year ended December 31, 2020, the Company granted 599,766, 44,534, and 16,287 share awards with a closing price on date of grant of $30.90, $13.99, and $29.17, respectively.

The total unrecognized compensation cost of $22.3 million for all unvested share awards outstanding at December 31, 2020 will be recognized over a weighted average remaining period of 2.6 years.

Executive share-based awards

Certain of the Company's executives are eligible to receive annual awards of RSUs and PSUs (collectively, the "share units"). Annual awards of RSUs represent a fixed number of shares and vest on December 31st in equal tranches over three years for grants prior to 2019, and over four years for awards issued in 2019 and 2020. PSUs are initially granted based on a target value. The number of PSUs that ultimately vest at the end of the performance measurement period will be based on the achievement of performance criteria pre-established by the Compensation Committee of the Board of Directors. Upon vesting, the share units will be converted to common stock on a one-for-one basis, or may be settled in cash at the Company's option. The share units will accumulate dividends declared on the Company's common stock from the date of grant to be paid subsequent to vesting.

As a result of the majority of previous settlements being in cash, all RSUs and PSUs have been determined to be liability instruments and are remeasured at fair value each reporting period until the awards are settled. The RSUs are valued based on the closing price of the Company's common stock at the reporting date. The PSUs are valued based on the closing price of the Company's common stock at the reporting date net of a discount related to any applicable market conditions, considering the probability of meeting the defined performance conditions. Compensation cost related to PSUs is recognized during the performance period based on the probable outcome of the respective performance conditions.

A summary of activity related to executive share-based awards for the years ended December 31, 2020, 2019 and 2018 follows:


	RSU	PSU
Unvested executive share-based awards outstanding, December 31, 2017	91,163	105,714
Granted	52,026	52,026
Vested	(52,580)	(57,873)
Unvested executive share-based awards outstanding, December 31, 2018	90,609	99,867
Granted	73,062	73,062
Vested	(51,555)	(47,841)
Unvested executive share-based awards outstanding, December 31, 2019	112,116	125,088
Granted	106,731	106,731
Vested	(62,292)	(52,026)
Unvested executive share-based awards outstanding, December 31, 2020	156,555	179,793

The total liability for these executive share-based awards was $7.3 million at December 31, 2020. The total unrecognized compensation cost of $8.4 million for unvested executive share-based awards at December 31, 2020 will be recognized over a weighted average remaining period of 2.2 years.

Incentive awards

The Company's annual incentive compensation arrangements for employees other than those eligible for the executive share-based awards discussed above provide for settlement through a combination of cash payments and unvested share awards following the end of the annual performance period. The dollar value of share awards to be granted is based on the achievement of performance criteria established in the incentive arrangements. The number of shares of common stock to be awarded is variable based on the closing price of the Company's stock on the date of grant; therefore, these awards are initially classified as liability instruments, with compensation cost recognized from the beginning of the performance period. Awards related to performance periods prior to 2019 vest over three years and awards related to subsequent performance periods vest in equal installments over a period of four years from the date of grant. These awards are included in the summary of activity related to unvested share awards above. None of these awards are expected to be granted for the 2020 performance period.

The 660,587 unvested share awards granted during the year ended December 31, 2020, as discussed above, included 114,936 unvested share awards granted under the Company's annual incentive compensation arrangements based on the achievement of established performance criteria for the year ended December 31, 2019.

Option Awards

A summary of activity related to stock option awards for the years ended December 31, 2020, 2019 and 2018 follows:


	Number of Option Awards	Weighted Average Exercise Price
Option awards outstanding, December 31, 2017	1,270,688	$	26.93
Exercised	(291,689)	26.49
Canceled or forfeited	(14,159)	63.74
Option awards outstanding, December 31, 2018	964,840	26.53
Exercised	(225,127)	25.84
Canceled or forfeited	(1,960)	63.74
Option awards outstanding, December 31, 2019	737,753	26.64
Exercised	(735,400)	26.67
Canceled or forfeited	(784)	22.18
Option awards outstanding and exercisable, December 31, 2020	1,569	$	15.94

At December 31, 2020 the options outstanding and exercisable had a remaining contractual term of 0.3 years and an insignificant intrinsic value. The intrinsic value of options exercised was $2.3 million for each of the years ended December 31, 2020 and 2019, respectively, and $4.6 million for the year ended December 31, 2018. The related tax benefit of options exercised was $0.6 million for each of the years ended December 31, 2020 and 2019, respectively, and $1.1 million for the year ended December 31, 2018.

There were no option awards granted during the years ended December 31, 2020, 2019 and 2018.

Deferred Compensation Plan

The Company has a non-qualified deferred compensation plan for a group of key management or highly compensated employees whereby a participant, upon election, may defer a portion of eligible compensation. The deferred compensation plan provides for discretionary Company contributions. Generally, the Company has elected not to make contributions. The Company credits each participant's account with income based on either an annual interest rate determined by the Company's Compensation Committee or returns of selected investment portfolios, as elected by the participant. A participant's elective deferrals and interest thereon are at all times 100% vested. Company contributions and interest thereon will become 100% vested upon the earlier of a change in control, as defined, or the participant's death, disability, attainment of normal retirement age or the completion of two years of service. Participant deferrals and any associated earnings will be paid upon separation from service or based on a specified distribution schedule, as elected by the participant. Deferred compensation expense was $2.0 million, $1.9 million and $1.3 million for the years ended December 31, 2020, 2019 and 2018, respectively. Deferred compensation liabilities of $29 million and $27 million were included in other liabilities in the accompanying consolidated balance sheets at December 31, 2020 and 2019, respectively.

BankUnited 401(k) Plan

Under the terms of the 401(k) Plan sponsored by the Company, eligible employees may contribute a portion of compensation not exceeding the limits set by law. Employees are eligible to participate in the plan after one month of service. The 401(k) Plan allows a matching employer contribution equal to 100% of elective deferrals that do not exceed 1% of compensation, plus 70% of elective deferrals that exceed 1% but are less than 6% of compensation. Matching contributions are fully vested after two years of service. For the years ended December 31, 2020, 2019 and 2018, BankUnited made matching contributions to the 401(k) Plan of approximately $5.7 million, $6.1 million and $6.3 million, respectively.

Fair Value Measurements

12 Months Ended

Dec. 31, 2020

Fair Value Disclosures [Abstract]

Fair Value Measurements

Assets and liabilities measured at fair value on a recurring basis

The following is a description of the methodologies used to estimate the fair values of assets and liabilities measured at fair value on a recurring basis and the level within the fair value hierarchy in which those measurements are typically classified.

Investment securities available for sale and marketable equity securities—Fair value measurements are based on quoted prices in active markets when available; these measurements are classified within level 1 of the fair value hierarchy. These securities typically include U.S. Treasury securities and certain preferred stocks. If quoted prices in active markets are not available, fair values are estimated using quoted prices of securities with similar characteristics, quoted prices of identical securities in less active markets, discounted cash flow techniques, or matrix pricing models. These securities are generally classified within level 2 of the fair value hierarchy and include U.S. Government agency securities, U.S. Government agency and sponsored enterprise MBS, preferred stock investments for which level 1 valuations are not available, non-mortgage asset-backed securities, single family rental real estate-backed securities, certain private label residential MBS and CMOs, private label commercial MBS, collateralized loan obligations and state and municipal obligations. Pricing of these securities is generally primarily spread driven. Observable inputs that may impact the valuation of these securities include benchmark yield curves, credit spreads, reported trades, dealer quotes, bids, issuer spreads, current rating, historical constant prepayment rates, historical voluntary prepayment rates, structural and waterfall features of individual securities, published collateral data, and for certain securities, historical constant default rates and default severities.

The Company uses third-party pricing services in determining fair value measurements for investment securities. To obtain an understanding of the methodologies and assumptions used, management reviews written documentation provided by the pricing services, conducts interviews with valuation desk personnel and reviews model results and detailed assumptions used to value selected securities as considered necessary. Management has established a robust price challenge process that includes a review by the treasury front office of all prices provided on a monthly basis. Any price evidencing unexpected month over month fluctuations or deviations from expectations is challenged. If considered necessary to resolve any discrepancies, a price will be obtained from an additional independent valuation source. The Company does not typically adjust the prices provided, other than through this established challenge process. The results of price challenges are subject to review by executive management. The Company has also established a quarterly process whereby prices provided by its primary pricing service for a sample of securities are validated. Any price discrepancies are resolved based on careful consideration of the assumptions and inputs employed by each of the pricing sources.

Servicing rights—Commercial servicing rights are valued using a discounted cash flow methodology incorporating contractually specified servicing fees and market based assumptions about prepayments, discount rates, default rates and costs of servicing. Prepayment and default assumptions are based on historical industry data for loans with similar characteristics. Assumptions about costs of servicing are based on market convention. Discount rates are based on rates of return implied by observed trades of underlying loans in the secondary market. These instruments are classified within level 2 of the fair value hierarchy.

Derivative financial instruments—Fair values of interest rate swaps and caps are determined using widely accepted discounted cash flow modeling techniques. These discounted cash flow models use projections of future cash payments and receipts that are discounted at mid-market rates. Observable inputs that may impact the valuation of these instruments include LIBOR swap rates and LIBOR forward yield curves. These fair value measurements are generally classified within level 2 of the fair value hierarchy.

The following tables present assets and liabilities measured at fair value on a recurring basis at December 31, 2020 and 2019 (in thousands):



	2020
	Level 1		Level 2		Total
Investment securities available for sale:
U.S. Treasury securities	$	80,851	$	—	$	80,851
U.S. Government agency and sponsored enterprise residential MBS	—		2,405,570		2,405,570
U.S. Government agency and sponsored enterprise commercial MBS	—		539,354		539,354

Private label residential MBS and CMOs	—		998,603		998,603
Private label commercial MBS	—		2,526,354		2,526,354
Single family rental real estate-backed securities	—		650,888		650,888
Collateralized loan obligations	—		1,140,274		1,140,274
Non-mortgage asset-backed securities	—		253,261		253,261
State and municipal obligations	—		235,709		235,709
SBA securities	—		231,545		231,545

Marketable equity securities	104,274		—		104,274
Servicing rights	—		7,073		7,073
Derivative assets	—		123,830		123,830
Total assets at fair value	$	185,125	$	9,112,461	$	9,297,586
Derivative liabilities	$	—	$	(44,490)	$	(44,490)
Total liabilities at fair value	$	—	$	(44,490)	$	(44,490)



	2019
	Level 1		Level 2		Total
Investment securities available for sale:
U.S. Treasury securities	$	70,325	$	—	$	70,325
U.S. Government agency and sponsored enterprise residential MBS	—		2,022,175		2,022,175
U.S. Government agency and sponsored enterprise commercial MBS	—		370,976		370,976

Private label residential MBS and CMOs	—		1,012,177		1,012,177
Private label commercial MBS	—		1,724,684		1,724,684
Single family rental real estate-backed securities	—		470,025		470,025
Collateralized loan obligations	—		1,197,366		1,197,366
Non-mortgage asset-backed securities	—		194,904		194,904
State and municipal obligations	—		273,302		273,302
SBA securities	—		362,731		362,731

Marketable equity securities	60,572		—		60,572
Servicing rights	—		7,977		7,977
Derivative assets	—		43,686		43,686
Total assets at fair value	$	130,897	$	7,680,003	$	7,810,900
Derivative liabilities	$	—	$	(19,029)	$	(19,029)
Total liabilities at fair value	$	—	$	(19,029)	$	(19,029)

Assets and liabilities measured at fair value on a non-recurring basis

Following is a description of the methodologies used to estimate the fair values of assets and liabilities that may be measured at fair value on a non-recurring basis, and the level within the fair value hierarchy in which those measurements are typically classified.

Collateral dependent loans, OREO and other repossessed assets—The carrying amount of collateral dependent loans is typically based on the fair value of the underlying collateral, which may be real estate or other business assets, less estimated costs to sell when repayment is expected to come from the sale of the collateral. The carrying value of OREO is initially measured based on the fair value of the real estate acquired in foreclosure and subsequently adjusted to the lower of cost or estimated fair value, less estimated cost to sell. Fair values of real estate collateral and OREO are typically based on third-party real estate appraisals which utilize market and income approaches to valuation incorporating both observable and unobservable inputs. When current appraisals are not available, the Company may use brokers’ price opinions, home price indices or other available information about changes in real estate market conditions to adjust the latest appraised value available. These adjustments to appraised values may be subjective and involve significant management judgment. The fair value of repossessed assets or collateral consisting of other business assets may be based on third-party appraisals or internal analyses that use market approaches to valuation incorporating a combination of observable and unobservable inputs.

Fair value measurements related to collateral dependent loans, OREO and other repossessed assets are generally classified within level 3 of the fair value hierarchy.

Loans held for sale—Loans not originated or otherwise acquired with the intent to sell are transferred into the held for sale classification at the lower of carrying amount or fair value, typically determined based on the estimated selling price of the loans. These fair value measurements are typically classified within level 3 of the fair value hierarchy.

Operating lease equipment—Fair values of impaired operating lease equipment are typically based upon discounted cash flow analyses, considering expected lease rates and estimated end of life residual values, typically obtained from independent appraisals. These fair value measurements are classified within level 3 of the fair value hierarchy.

The following table presents the net carrying value of assets classified within level 3 of the fair value hierarchy at December 31, 2020 and 2019, for which non-recurring changes in fair value have been recorded during the year then ended (in thousands):


	2020		2019
Collateral dependent loans	$	73,803	$	79,982
Loans held for sale	20,500		—
OREO and repossessed assets	2,786		1,098
Operating lease equipment	—		2,919
	$	97,089	$	83,999

The following table presents the carrying value and fair value of financial instruments and the level within the fair value hierarchy in which those measurements are classified at December 31, 2020 and 2019 (dollars in thousands):



		2020				2019
	Level	Carrying Value		Fair Value		Carrying Value		Fair Value
Assets:
Cash and cash equivalents	1	$	397,716	$	397,716	$	214,673	$	214,673
Investment securities	1/2	$	9,176,683	$	9,177,870	$	7,769,237	$	7,769,949
Non-marketable equity securities	2	$	195,865	$	195,865	$	253,664	$	253,664
Loans held for sale	2	$	24,676	$	25,057	$	37,926	$	39,731
Loans, net	3	$	23,608,719	$	24,205,016	$	23,046,317	$	23,350,684
Derivative assets	2	$	123,830	$	123,830	$	43,686	$	43,686
Liabilities:
Demand, savings and money market deposits	2	$	22,688,617	$	22,688,617	$	17,047,344	$	17,047,344
Time deposits	2	$	4,807,199	$	4,814,862	$	7,347,247	$	7,377,301
Federal funds purchased	2	$	180,000	$	180,000	$	100,000	$	100,000
FHLB advances	2	$	3,122,999	$	3,127,190	$	4,480,501	$	4,500,969
Notes and other borrowings	2	$	722,495	$	849,120	$	429,338	$	473,327
Derivative liabilities	2	$	44,490	$	44,490	$	19,029	$	19,029

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Commitments and Contingencies

12 Months Ended

Dec. 31, 2020

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies

Note 15 Commitments and Contingencies

The Company issues off-balance sheet financial instruments to meet the financing needs of its customers. These financial instruments include commitments to fund loans, unfunded commitments under existing lines of credit, and commercial and standby letters of credit. These commitments expose the Company to varying degrees of credit and market risk which are essentially the same as those involved in extending loans to customers, and are subject to the same credit policies used in underwriting loans. Collateral may be obtained based on the Company’s credit evaluation of the counterparty. The Company’s maximum exposure to credit loss is represented by the contractual amount of these commitments.

Commitments to fund loans

These are agreements to lend funds to customers as long as there is no violation of any condition established in the contract. Commitments to fund loans generally have fixed expiration dates or other termination clauses and may require payment of a fee. Many of these commitments are expected to expire without being funded and, therefore, the total commitment amounts do not necessarily represent future liquidity requirements.

Unfunded commitments under lines of credit

Unfunded commitments under lines of credit include commercial, commercial real estate and consumer lines of credit to existing customers, for many of which additional extensions of credit are subject to borrowing base requirements. Some of these commitments may mature without being fully funded.

Commercial and standby letters of credit

Letters of credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third party. These letters of credit are primarily issued to support trade transactions or guarantee arrangements. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loan facilities to customers.

Total lending related commitments outstanding at December 31, 2020 were as follows (in thousands):


Commitments to fund loans	$	419,526

Unfunded commitments under lines of credit	3,620,155
Commercial and standby letters of credit	93,325
	$	4,133,006

Legal Proceedings

The Company is involved as plaintiff or defendant in various legal actions arising in the normal course of business. In the opinion of management, based upon advice of legal counsel, the likelihood is remote that the impact of these proceedings, either individually or in the aggregate, would be material to the Company’s consolidated financial position, results of operations or cash flows.

Condensed Financial Statements of BankUnited, Inc.

12 Months Ended

Dec. 31, 2020

Condensed Financial Statements [Abstract]

Condensed Financial Statements

Note 16 Condensed Financial Statements of BankUnited, Inc.

Condensed financial statements of BankUnited, Inc. are presented below (in thousands):

Condensed Balance Sheets


	December 31, 2020		December 31, 2019
Assets:
Cash and cash equivalents	$	289,761	$	204,589
Investment securities available for sale, at fair value	104,274		60,572
Investment in BankUnited, N.A.	3,288,252		3,104,660

Other assets	29,978		42,454
Total assets	$	3,712,265	$	3,412,275
Liabilities and Stockholders' Equity:
Notes payable	$	689,932	$	395,090
Other liabilities	39,321		36,406
Stockholders' equity	2,983,012		2,980,779
Total liabilities and stockholders' equity	$	3,712,265	$	3,412,275

Condensed Statements of Income


	Years Ended December 31,
	2020		2019		2018
Income:
Interest and dividends on investment securities available for sale	$	4,214	$	3,595	$	3,532
Service fees from subsidiary	15,935		18,080		21,000
Equity in earnings of subsidiary	224,734		335,723		349,937
Gain (loss) on investment securities	3,822		2,690		(2,805)
Total	248,705		360,088		371,664
Expense:
Interest on borrowings	29,041		20,200		20,165
Employee compensation and benefits	24,867		28,270		28,477
Other	3,711		4,396		5,617
Total	57,619		52,866		54,259
Income before income taxes	191,086		307,222		317,405
Benefit for income taxes	(6,767)		(5,876)		(7,461)
Net income	$	197,853	$	313,098	$	324,866

Condensed Statements of Cash Flows


	Years Ended December 31,
	2020		2019		2018
Cash flows from operating activities:
Net income	$	197,853	$	313,098	$	324,866
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in undistributed earnings of subsidiaries	(224,734)		(30,723)		70,064
Equity based compensation	20,367		23,367		23,137
Other	10,171		(8,656)		(15,654)
Net cash provided by operating activities	3,657		297,086		402,413
Cash flows from investing activities:

Purchase of marketable equity securities	(53,266)		(8,963)		—
Proceeds from repayments, sale, maturities and calls of investment securities	13,426		11,575		—

Other	—		(142)		(156)
Net cash provided by (used in) investing activities	(39,840)		2,470		(156)
Cash flows from financing activities:
Proceeds from issuance of notes payable	293,858		—		—
Dividends paid	(86,522)		(84,083)		(91,305)
Proceeds from exercise of stock options	19,611		5,817		7,727
Repurchase of common stock	(100,972)		(154,030)		(299,972)
Other	(4,620)		(6,514)		(6,560)
Net cash provided by (used in) financing activities	121,355		(238,810)		(390,110)
Net increase in cash and cash equivalents	85,172		60,746		12,147
Cash and cash equivalents, beginning of period	204,589		143,843		131,696
Cash and cash equivalents, end of period	$	289,761	$	204,589	$	143,843
Supplemental schedule of non-cash investing and financing activities:
Dividends declared, not paid	$	22,309	$	20,775	$	21,673

Dividends received by BankUnited, Inc. from the Bank totaled $305 million and $420 million for the years ended December 31, 2019, and 2018, respectively. No dividends were received by BankUnited, Inc. from the Bank during the year ended December 31, 2020.

Quarterly Financial Information (Unaudited)

12 Months Ended

Dec. 31, 2020

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Information [Table Text Block]

Financial information by quarter for the years ended December 31, 2020 and 2019 follows (in thousands, except per share data):


	2020
	Fourth Quarter		Third Quarter		Second Quarter		First Quarter		Total
Interest income	$	251,120	$	254,572	$	267,778	$	294,139	$	1,067,609
Interest expense	57,754		67,093		77,441		113,563		315,851
Net interest income before provision for credit losses	193,366		187,479		190,337		180,576		751,758
Provision for (recovery of) credit losses	(1,643)		29,232		25,414		125,428		178,431
Net interest income after provision for credit losses	195,009		158,247		164,923		55,148		573,327
Non-interest income	35,280		36,292		38,351		23,298		133,221
Non-interest expense	123,324		108,627		106,370		118,868		457,189
Income (loss) before income taxes	106,965		85,912		96,904		(40,422)		249,359
Provision (benefit) for income taxes	21,228		19,353		20,396		(9,471)		51,506
Net income (loss)	$	85,737	$	66,559	$	76,508	$	(30,951)	$	197,853
Earnings (loss) per common share, basic	$	0.89	$	0.70	$	0.80	$	(0.33)	$	2.06
Earnings (loss) per common share, diluted	$	0.89	$	0.70	$	0.80	$	(0.33)	$	2.06


	2019
	Fourth Quarter		Third Quarter		Second Quarter		First Quarter		Total
Interest income	$	309,410	$	323,402	$	327,229	$	321,829	$	1,281,870
Interest expense	124,099		137,712		136,346		130,928		529,085
Net interest income before provision for credit losses	185,311		185,690		190,883		190,901		752,785
Provision for (recovery of) credit losses	(469)		1,839		(2,747)		10,281		8,904
Net interest income after provision for credit losses	185,780		183,851		193,630		180,620		743,881
Non-interest income	37,756		37,856		35,337		36,255		147,204
Non-interest expense	119,008		121,306		120,085		126,690		487,089
Income before income taxes	104,528		100,401		108,882		90,185		403,996
Provision for income taxes	15,072		24,182		27,431		24,213		90,898
Net income	$	89,456	$	76,219	$	81,451	$	65,972	$	313,098
Earnings per common share, basic	$	0.91	$	0.78	$	0.81	$	0.65	$	3.14
Earnings per common share, diluted	$	0.91	$	0.77	$	0.81	$	0.65	$	3.13

Basis of Presentation and Summary of Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Use of Estimates, Policy [Policy Text Block]	Accounting Estimates In preparing the consolidated financial statements, management is required to make estimates and assumptions that affect the reported amounts of assets, liabilities, revenues, and expenses and disclosures of contingent assets and liabilities. Actual results could differ significantly from these estimates. The most significant estimate impacting the Company's consolidated financial statements is the ACL.
Consolidation, Policy	Principles of Consolidation The consolidated financial statements include the accounts of BankUnited, Inc. and its wholly-owned subsidiary. All significant intercompany balances and transactions have been eliminated in consolidation. VIEs are consolidated if the Company is the primary beneficiary; i.e., has (i) the power to direct the activities of the VIE that most significantly impact the VIE's economic performance and (ii) the obligation to absorb losses or the right to receive benefits that could potentially be significant to the VIE. The Company has variable interests in affordable housing limited partnerships that are not required to be consolidated because the Company is not the primary beneficiary.
Fair Value Measurement, Policy	Fair Value Measurements Certain of the Company's assets and liabilities are reflected in the consolidated financial statements at fair value on either a recurring or non-recurring basis. Investment securities available for sale, marketable equity securities, servicing rights and derivative instruments are measured at fair value on a recurring basis. Assets measured at fair value or fair value less cost to sell on a non-recurring basis may include collateral dependent loans, OREO and other repossessed assets, loans held for sale, goodwill and impaired long-lived assets. These non-recurring fair value measurements typically involve lower-of-cost-or-market accounting or the measurement of impairment of certain assets. Fair value is defined as the exchange price that would be received for an asset or paid to transfer a liability in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants at the measurement date. GAAP establishes a hierarchy that prioritizes inputs used to determine fair value measurements into three levels based on the observability and transparency of the inputs: •Level 1 inputs are unadjusted quoted prices in active markets that are accessible at the measurement date for identical assets or liabilities. •Level 2 inputs are observable inputs other than level 1 inputs, including quoted prices for similar assets and liabilities, quoted prices for identical assets and liabilities in less active markets and other inputs that can be corroborated by observable market data. •Level 3 inputs are unobservable inputs supported by limited or no market activity or data and inputs requiring significant management judgment or estimation. The fair value hierarchy requires the Company to maximize the use of observable inputs and minimize the use of unobservable inputs in estimating fair value. Unobservable inputs are utilized in determining fair value measurements only to the extent that observable inputs are unavailable. The need to use unobservable inputs generally results from a lack of market liquidity and diminished observability of actual trades or assumptions that would otherwise be available to value a particular asset or liability.
Cash and Cash Equivalents, Policy	Cash and Cash Equivalents Cash and cash equivalents include cash and due from banks, both interest bearing and non-interest bearing, including amounts on deposit at the Federal Reserve Bank, and federal funds sold. Cash equivalents have original maturities of three months or less. For purposes of reporting cash flows, cash receipts and payments pertaining to FHLB advances with original maturities of three months or less are reported net.
Marketable Securities, Policy	Investment Securities Debt securities that the Company has the positive intent and ability to hold to maturity are classified as held to maturity and reported at amortized cost. Debt securities that the Company may not have the intent to hold to maturity are classified as available-for-sale at the time of acquisition and carried at fair value with unrealized gains and losses, net of tax, excluded from earnings and reported in AOCI, a separate component of stockholders' equity. Securities classified as available-for-sale may be used as part of the Company's asset/liability management strategy and may be sold in response to liquidity needs, regulatory changes, changes in interest rates, prepayment risk or other market factors. The Company does not maintain a trading portfolio. Purchase premiums and discounts on debt securities are amortized as adjustments to yield over the expected lives of the securities, using the level yield method. Premiums are amortized to the call date for callable securities. Realized gains and losses from sales of securities are recorded on the trade date and are determined using the specific identification method. The Company's policy on the ACL related to debt securities is discussed below in the section entitled "Allowance for Credit Losses". Marketable equity securities with readily determinable fair values are reported at fair value with unrealized gains and losses included in earnings. Equity securities that do not have readily determinable fair values are reported at cost and re-measured at fair value upon occurrence of an observable price change or recognition of impairment.
Nonmarketable Equity Securities	Non-marketable Equity Securities The Bank, as a member of the FRB system and the FHLB, is required to maintain investments in the stock of the FRB and FHLB. No market exists for this stock, and the investment can be liquidated only through redemption by the respective institutions, at the discretion of and subject to conditions imposed by those institutions. The stock has no readily determinable fair value and is carried at cost. Historically, stock redemptions have been at par value, which equals the Company's carrying value. The Company monitors its investment in FHLB stock for impairment through review of recent financial results of the FHLB, including capital adequacy and liquidity position, dividend payment history, redemption history and information from credit agencies. The Company has not identified any indicators of impairment of FHLB stock.
Financing Receivable, Held-for-sale	Loans Held for Sale The guaranteed portion of SBA and USDA loans originated with the intent to sell are carried at the lower of cost or fair value, determined in the aggregate. A valuation allowance is established through a charge to earnings if the aggregate fair value of such loans is lower than their cost. Gains or losses recognized upon sale are determined on the specific identification basis. Loans not originated or otherwise acquired with the intent to sell are transferred into the held for sale classification at the lower of carrying amount or fair value when they are specifically identified for sale and a formal plan exists to sell them.
Financing Receivable, Held-for-investment	Loans The Company's loan portfolio contains 1-4 single family residential first mortgages, government insured residential mortgages, an insignificant amount of other consumer loans, multi-family, non-owner occupied commercial real estate, construction and land, owner-occupied commercial real estate, commercial and industrial and PPP loans, mortgage warehouse lines of credit and sales-type and direct financing leases. Loans are reported at amortized cost basis, net of the ACL. Interest income is accrued based on the principal amount outstanding. Non-refundable loan origination fees, net of direct costs of originating or acquiring loans, as well as purchase premiums and discounts, are deferred and recognized as adjustments to yield over the contractual lives of the related loans using the level yield method. Sales-type and Direct Financing Leases Sales-type and direct financing leases are carried at the aggregate of lease payments receivable and estimated residual value of the leased property, if applicable, less unearned income. Interest income is recognized over the term of the leases to achieve a constant periodic rate of return on the outstanding investment.
Credit Loss, Financial Instrument [Policy Text Block]	ACL AFS Debt Securities The Company reviews its AFS debt securities for credit loss impairment at the individual security level on at least a quarterly basis. A security is impaired if its fair value is less than its amortized cost basis. A decline in fair value below amortized cost basis represents a credit loss impairment to the extent the Company does not expect to recover the amortized cost basis of the security. Impairment related to credit losses is recorded through the ACL to the extent fair value is less than the amortized cost basis. Declines in fair value that have not been recorded through the ACL are recorded through other comprehensive income, net of applicable taxes. In assessing whether an impairment is credit loss related, the Company compares the present value of cash flows expected to be collected to the security's amortized cost basis. If the present value of cash flows expected to be collected is less than the amortized cost basis of the security, a credit loss exists and an ACL is recorded. The Company discounts expected cash flows at the effective interest rate implicit in the security at the purchase date, adjusted for expected prepayments. For floating rate securities, the Company uses the floating rate as it changes over the life of the security. In developing estimates about cash flows expected to be collected and determining whether a credit loss exists, the Company considers information about past events, current conditions and reasonable and supportable forecasts. Factors and information that the Company uses in making its assessments include, but are not necessarily limited to, the following: •The extent to which fair value is less than amortized cost; •Adverse conditions specifically related to the security, an industry or geographic area; •Changes in the financial condition of the issuer or underlying loan obligors; •The payment structure and remaining payment terms of the security, including levels of subordination or over-collateralization; •Failure of the issuer to make scheduled payments; •Changes in credit ratings; •Relevant market data; •Estimated prepayments, defaults, and the value and performance of underlying collateral at the individual security level. The relative importance assigned to each of these factors varies depending on the facts and circumstances pertinent to the individual security being evaluated. Timely payment of principal and interest on securities issued by the U.S. Government, U.S. government agencies and U.S. government sponsored entities is explicitly or implicitly guaranteed by the U. S. government. Therefore, the Company expects to recover the amortized cost basis of these securities. If the Company intends to sell a security in an unrealized loss position, or it is more likely than not that the Company will be required to sell the security before recovery of its amortized cost basis, any allowance for credit losses will be written off and the amortized cost basis will be written down to the debt security’s fair value at the reporting date with any incremental impairment reported in earnings. AFS securities will be charged off to the extent that there is no reasonable expectation of recovery of amortized cost basis. AFS securities will be placed on non-accrual status if the Company does not reasonably expect to receive interest payments in the future and interest accrued will be reversed against interest income. Securities will be returned to accrual status only when collection of interest is reasonably assured. Loans The ACL is a valuation account that is deducted from the amortized cost basis of loans to present the net amount expected to be collected. The ACL is adjusted through the provision for credit losses to the amount of amortized cost basis not expected to be collected, or in the case of PCD loans, the amount of UPB not expected to be collected, at the balance sheet date. Amortized cost basis includes UPB, unamortized premiums or discounts and deferred fees and costs, net of amounts previously charged off. The measurement of expected credit losses encompasses information about historical events, current conditions and reasonable and supportable forecasts. Determining the amount of the ACL is complex and requires extensive judgment by management about matters that are inherently uncertain. Re-evaluation of the ACL estimate in future periods, in light of changes in composition and characteristics of the loan portfolio, changes in the reasonable and supportable forecast and other factors then prevailing may result in material changes in the amount of the ACL and credit loss expense in those future periods. Loans are charged off against the ACL in the period in which they are deemed uncollectible and recoveries are credited to the ACL when received. Expected recoveries on loans previously charged off and expected to be charged-off, not to exceed the aggregate of amounts previously charged-off and expected to be charged-off, are included in the ACL estimate. For loans secured by residential real estate, an assessment of collateral value is made at no later than 120 days delinquency; any outstanding loan balance in excess of fair value less cost to sell is charged off at no later than 180 days delinquency. Additionally, any outstanding balance in excess of fair value of collateral less cost to sell is charged off (i) within 60 days of receipt of notification of filing from the bankruptcy court, (ii) within 60 days of determination of loss if all borrowers are deceased or (iii) within 90 days of discovery of fraudulent activity. Other consumer loans are typically charged off at 120 days delinquency. Commercial loans are charged off when, in management's judgment, they are considered to be uncollectible. Expected credit losses are estimated on a collective basis for groups of loans that share similar risk characteristics. Factors that may be considered in aggregating loans for this purpose include but are not necessarily limited to, product or collateral type, industry, geography, internal risk rating, credit characteristics such as credit scores or collateral values, and historical or expected credit loss patterns. For loans that do not share similar risk characteristics with other loans such as collateral dependent loans and TDRs, expected credit losses are estimated on an individual basis. Expected credit losses are estimated over the contractual terms of the loans, adjusted for expected prepayments. Expected prepayments for commercial loans are generally estimated based on the Company's historical experience. For residential loans, expected prepayments are estimated using a model that incorporates industry prepayment data, calibrated to reflect the Company's experience. The contractual term excludes expected extensions, renewals, and modifications unless either of the following applies: management has a reasonable expectation at the reporting date that a TDR will be executed with an individual borrower or the extension or renewal options are included in the original or modified contract at the reporting date and are not unconditionally cancellable by the Company. For the substantial majority of portfolio segments and subsegments, including residential loans other than government insured loans, and most commercial and commercial real estate loans, expected losses are estimated using econometric models. The models employ a factor based methodology, leveraging data sets containing extensive historical loss and recovery information by industry, geography, product type, collateral type and obligor characteristics, to estimate PD and LGD. Measures of PD for commercial loans incorporate current conditions through market cycle or credit cycle adjustments. For residential loans, the models consider FICO and adjusted LTVs. PDs and LGDs are then conditioned on the reasonable and supportable economic forecast. Projected PDs and LGDs, determined based on pool level characteristics, are applied to estimated exposure at default, considering the contractual term and payment structure of loans, adjusted for prepayments, to generate estimates of expected loss. For criticized or classified loans, PDs are adjusted to benchmark PDs established for each risk rating if the most current financial information available is deemed not to be reflective of the borrowers' current financial condition. The ACL estimate incorporates a reasonable and supportable economic forecast through the use of externally developed macroeconomic scenarios applied in the models. A single economic scenario or a probability weighted blend of economic scenarios may be used. The models ingest numerous national, regional and MSA level variables and data points. Some of the more impactful include both current and forecasted unemployment rates, HPI, CRE property forecasts, stock market and market volatility indices, real GDP growth, and a variety of interest rates and spreads. The length of the reasonable and supportable forecast period is evaluated at each reporting period and adjusted if deemed necessary. Currently, the Company uses a 2-year reasonable and supportable forecast period in estimating the ACL. After the reasonable and supportable forecast periods, the models effectively revert to long-term mean losses on a straight-line basis over 12 months. For certain less material portfolios including loans and leases to state and local government entities originated by Pinnacle, small balance commercial loans and consumer loans, the WARM method is used to estimate expected credit losses. Loss rates are applied to the exposure at default, after factoring in amortization and expected prepayments. For the Pinnacle portfolio, historical loss information is based on municipal historical default and recovery data, segmented by credit rating. For small balance commercial loans, historical loss information is based on the Company's historical loss experience over a five year period. For consumer loans, historical loss information is based on peer data; this portfolio subsegment is not significant. All loss estimates are conditioned as applicable on changes in current conditions and the reasonable and supportable economic forecast. Expected credit losses for the funded portion of mortgage warehouse lines of credit are estimated based primarily on the Company's historical loss experience, conditioned as applicable on changes in current conditions and the reasonable and supportable economic forecast. Generally, given the nature of these loans, losses would be expected to manifest within a very short time period after origination. The Company expects to collect the amortized cost basis of government insured residential loans and PPP loans due to the nature of the government guarantee, so the ACL is zero for these loans. Qualitative factors Qualitative adjustments are made to the ACL when, based on management’s judgment, there are factors impacting expected credit losses not taken into account by the quantitative calculations. Potential qualitative adjustments are categorized as follows: •Economic factors, including material trends and developments that, in management's judgment, may not have been considered in the reasonable and supportable economic forecast; •Credit policy and staffing, including the nature and level of policy and procedural exceptions or changes in credit policy not reflected in quantitative results, changes in the quality of underwriting and portfolio management and staff and issues identified by credit review, internal audit or regulators that may not be reflected in quantitative results; •Concentrations, considering whether the quantitative estimate adequately accounts for concentration risk in the portfolio; •Model imprecision and model validation findings; and •Other factors not adequately considered in the quantitative estimate or other qualitative categories identified by management that may materially impact the amount of expected credit losses. Collateral dependent loans Collateral dependent loans are those for which the borrower is experiencing financial difficulty and repayment is expected to be provided substantially through the operation or sale of the collateral. These loans do not typically share similar risk characteristics with other loans and expected credit losses are evaluated on an individual basis. Loans evaluated individually are not included in the collective evaluation. Estimates of expected credit losses for collateral dependent loans, whether or not foreclosure is probable, are based on the fair value of the collateral, adjusted for selling costs when repayment depends on sale of the collateral. Due to immateriality, expected credit losses for collateral dependent commercial relationships with committed balances less than $1.0 million may be estimated collectively. Troubled debt restructurings For TDRs or loans for which there is a reasonable expectation that a TDR will be executed that are not collateral dependent, the credit loss estimate is determined by comparing the net present value of expected cash flows, discounted at the loan’s original effective interest rate, to the amortized cost basis of the loan. Off-balance sheet credit exposures Expected credit losses related to off-balance sheet credit exposures are estimated over the contractual period for which the Company is exposed to credit risk via a contractual obligation to extend credit, unless that obligation is unconditionally cancellable by the Company. Expected credit losses are estimated using essentially the same methodologies employed to estimate expected credit losses on the amortized cost basis of loans, taking into consideration the likelihood and amount of additional amounts expected to be funded over the terms of the commitments. The liability for credit losses on off-balance sheet credit exposures is presented within other liabilities on the consolidated balance sheets, distinct from the ACL. Adjustments to the liability are included in the provision for credit losses.
Loans and Leases Receivable, Nonaccrual Loan and Lease Status, Policy [Policy Text Block]	Non-accrual loans Commercial loans are placed on non-accrual status when (i) management has determined that full repayment of all contractual principal and interest is in doubt, or (ii) the loan is past due 90 days or more as to principal or interest unless the loan is well secured and in the process of collection. Residential and other consumer loans, other than government insured residential loans, are generally placed on non-accrual status when they are 90 days past due. When a loan is placed on non-accrual status, uncollected interest accrued is reversed and charged to interest income. Payments received on non-accrual commercial loans are applied as a reduction of principal. Interest payments are recognized as income on a cash basis on non-accrual residential loans. Commercial loans are returned to accrual status only after all past due principal and interest has been collected and full repayment of remaining contractual principal and interest is reasonably assured. Residential and consumer loans are generally returned to accrual status when less than 90 days past due. Past due status of loans is determined based on the contractual next payment due date. Loans less than 30 days past due are reported as current. Contractually delinquent government insured residential loans are not classified as non-accrual due to the nature of the guarantee. Contractually delinquent PCD loans are not classified as non-accrual as long as the Company has a reasonable expectation about amounts expected to be collected.
Troubled Debt Restructuring [Policy Text Block]	Troubled Debt Restructurings In certain situations, due to economic or legal reasons related to a borrower's financial difficulties, the Company may grant a concession to the borrower for other than an insignificant period of time that it would not otherwise consider. At that time, the related loan is classified as a TDR. The concessions granted may include rate reductions, principal forgiveness, payment forbearance, extensions of maturity at rates of interest below that commensurate with the risk profile of the loans, modification of payment terms and other actions intended to minimize economic loss. A TDR is generally placed on non-accrual status at the time of the modification unless the borrower was performing prior to the restructuring. Pursuant to inter-agency and authoritative guidance and consistent with the CARES Act, short-term (generally periods of six months or less) deferrals or modifications related to COVID-19 will typically not be categorized as TDRs. Additionally, section 4013 of the CARES Act, as amended by the Consolidated Appropriations Act on December 27, 2020, effectively suspended the guidance related to TDRs codified in ASC 310-40 until the earlier of January 1, 2022 or sixty days after the date of the suspension of the declared state of emergency related to the COVID-19 pandemic. The Company has elected to apply the provisions of section 4013 to qualifying loan modifications, other than short-term payment deferrals of 6 months or less that are subject to the interagency guidance, that might otherwise be categorized as TDRs under ASC 310-40.
Purchased Credit Deteriorated [Policy Text Block]	PCD assets PCD assets are acquired financial assets that, as of the date of acquisition, have experienced a more than insignificant deterioration in credit quality since origination. An assessment is conducted at acquisition to determine whether acquired financial assets meet the criteria to be classified as PCD assets. That assessment may be conducted at the individual asset level, or for a group of assets acquired together that have similar risk characteristics. At acquisition, the ACL related to PCD assets, representing the estimated amount of the UPB of the assets not expected to be collected, is added to the purchase price to determine the amortized cost basis and any non-credit related discount or premium is allocated to the individual assets acquired. The non-credit related discount or premium is accreted or amortized to interest income over the life of the related assets using the level yield method, as long as there is a reasonable expectation about amounts expected to be collected. Subsequent changes in the amount of expected credit losses are recognized immediately by adjusting the ACL and reflecting the periodic changes as credit loss expense or reversal of credit loss expense. Loans previously categorized as ACI loans were categorized as PCD loans on initial adoption of ASC 326. At adoption, an ACL was recognized and a corresponding adjustment was made to the assets' amortized cost basis. Prior to the adoption of ASC 326, ACI loans were accounted for on a pool basis. These pools were not maintained on adoption. The Company did not re-assess whether modifications to individual PCD loans previously accounted for in pools were TDRs at adoption.
Accrued Interest Receivable [Policy Text Block]	Accrued Interest Receivable The Company has elected to present accrued interest receivable separate from the amortized cost basis of financial assets carried at amortized cost. The Company is applying the practical expedient provided in ASC 326 to exclude accrued interest receivable balances from tabular disclosures about financial assets carried at amortized cost. The Company generally does not estimate an ACL on accrued interest receivable balances since uncollectible accrued interest is timely written off in accordance with the Company's accounting policies for non-accrual loans. Under unusual circumstances, such as those presented by deferrals granted due to the COVID-19 pandemic, the Company evaluates whether its non-accrual policies continue to consistently provide for timely reversal of accrued interest receivable. If considered necessary, the Company records an allowance for uncollectible accrued interest receivable, determined using essentially the same methodologies used to estimate the ACL on the amortized cost basis of the related loans. The allowance is deducted from accrued interest receivable and presented within other assets on the consolidated balance sheets, distinct from the ACL. Changes in the ACL related to accrued interest receivable are included in the provision for credit losses.
Leases, Policy	Leases The Company determines whether a contract is or contains a lease at inception. For leases with terms greater than twelve months under which the Company is lessee, ROU assets and lease liabilities are recorded at the commencement date. Lease liabilities are initially recorded based on the present value of future lease payments over the lease term. ROU assets are initially recorded at the amount of the associated lease liabilities plus prepaid lease payments and initial direct costs, less any lease incentives received. The cost of short term leases is recognized on a straight line basis over the lease term. The lease term includes options to extend if the exercise of those options is reasonably certain and includes termination options if there is reasonable certainty the options will not be exercised. Lease payments are discounted using the Company's FHLB borrowing rate for borrowings of a similar term unless an implicit rate is defined in the contract or is determinable, which is generally not the case. Leases are classified as financing or operating leases at commencement; generally, leases are classified as finance leases when effective control of the underlying asset is transferred. The substantial majority of leases under which the Company is lessee are classified as operating leases. For operating leases, lease cost is recognized in the consolidated statements of income on a straight line basis over the lease terms. For finance leases, interest expense on lease liabilities is recognized on the effective interest method and amortization of ROU assets is recognized on a straight line basis over the lease terms. Variable lease costs are recognized in the period in which the obligation for those costs is incurred. The Company has elected not to separate lease from non-lease components of its lease contracts.
Bank Owned Life Insurance	Bank Owned Life Insurance Bank owned life insurance is carried at cash surrender value. Changes in cash surrender value are recorded in non-interest income.
Lessor, Leases	Operating Lease Equipment Operating lease equipment is carried at cost less accumulated depreciation and is depreciated to estimated residual value using the straight-line method over the lease term. Estimated residual values are re-evaluated at least annually, based primarily on current residual value appraisals. Rental revenue is recognized on a straight-line basis over the contractual term of the lease. A review for impairment of equipment under operating lease is performed at least annually or when events or changes in circumstances indicate that the carrying amount of long-lived assets may not be recoverable. Impairment of assets is determined by comparing the carrying amount to future undiscounted net cash flows expected to be generated. If an asset is impaired, the measure of impairment is the amount by which the carrying amount exceeds the fair value of the asset.
Goodwill and Intangible Assets, Policy	Goodwill Goodwill represents the excess of consideration transferred in business combinations over the fair value of net tangible and identifiable intangible assets acquired. Goodwill is not amortized, but is tested for impairment annually or more frequently if events or circumstances indicate that impairment may have occurred. The Company performs its annual goodwill impairment test in the third fiscal quarter. The Company has a single reporting unit. When assessing goodwill for impairment, the Company may elect to perform a qualitative assessment to determine if a quantitative impairment test is necessary. If a qualitative assessment is not performed, or if the qualitative assessment indicates it is likely that the fair value of a reporting unit is less than its carrying amount, a quantitative test is performed. The quantitative impairment test compares the estimated fair value of the reporting unit to its carrying amount. If the fair value of the reporting unit exceeds its carrying amount, no impairment is indicated. If the fair value of the reporting unit is less than its carrying amount, impairment of goodwill is measured as the excess of the carrying amount over fair value.
Financing Receivable, Held-for-investment, Foreclosed Asset [Policy Text Block]	OREO and Repossessed Assets OREO and repossessed assets consists of real estate assets acquired through, or in lieu of, loan foreclosure and personal property acquired through repossession. Such assets are included in other assets in the accompanying consolidated balance sheets. These assets are held for sale and are initially recorded at estimated fair value less costs to sell, establishing a new cost basis. Subsequent to acquisition, periodic valuations are performed and the assets are carried at the lower of the carrying amount at the date of acquisition or estimated fair value less cost to sell. Significant property improvements are capitalized to the extent that the resulting carrying value does not exceed fair value less cost to sell. Legal fees, maintenance, taxes, insurance and other direct costs of holding and maintaining these assets are expensed as incurred.
Property, Plant and Equipment, Policy	Premises and Equipment Premises and equipment are carried at cost less accumulated depreciation and amortization and are included in other assets in the accompanying consolidated balance sheets. Depreciation is calculated using the straight-line method over the estimated useful lives of the assets. The lives of improvements to existing buildings are based on the lesser of the estimated remaining lives of the buildings or the estimated useful lives of the improvements. Leasehold improvements are amortized over the shorter of the expected terms of the leases at inception, considering options to extend that are reasonably assured, or their useful lives. The estimated useful lives of premises and equipment are as follows: •buildings and improvements - 10 to 30 years; •leasehold improvements - 5 to 20 years; •furniture, fixtures and equipment - 5 to 7 years; and •computer equipment - 3 to 5 years.
Software and CCA	Software and CCA Software and CCA are carried at cost less accumulated depreciation and amortization and are included in other assets in the accompanying consolidated balance sheets. Depreciation and amortization are calculated using the straight-line method over the estimated useful lives of the assets, which for CCA is based on the term of the associated hosting arrangements plus any reasonably certain renewals. Direct costs associated with developing or obtaining and implementing internal use software and hosting arrangements that are service contracts incurred during the application development stage are capitalized. The estimated useful lives of software, software licensing rights and CCA implementation costs range from 3 to 5 years.
Transfers and Servicing of Financial Assets, Transfers of Financial Assets, Financings, Policy	Loan Servicing Rights Loan servicing rights relate to the portion of SBA and USDA loans sold in the secondary market and are measured at fair value, with changes in fair value subsequent to acquisition recognized in earnings. Loan servicing rights are included in other assets in the accompanying consolidated balance sheets. Servicing fee income is recorded net of changes in fair value in other non-interest income. Neither the loan servicing rights nor related income have had a material impact on the Company's financial statements to date.
Investments in Affordable Housing Limited Partnerships	Investments in Affordable Housing Limited Partnerships The Company has acquired investments in limited partnerships that manage or invest in qualified affordable housing projects and provide the Company with low-income housing tax credits and other tax benefits. These investments are included in other assets in the accompanying consolidated balance sheets. The Company accounts for investments in qualified affordable housing projects using the proportional amortization method if certain criteria are met. Under the proportional amortization method, the initial cost of the investment is amortized in proportion to the tax credits and other tax benefits received and the amortization is recognized in the income statement as a component of income tax expense. The investments are evaluated for impairment when events or changes in circumstances indicate that it may be more likely than not that the carrying amount of the investment will not be realized.
Income Tax, Policy	Income Taxes The Company accounts for income taxes using the asset and liability method. Deferred tax assets and liabilities are determined based on differences between the financial reporting and tax bases of assets and liabilities using enacted tax rates in effect for periods in which the differences are expected to reverse. The effect of changes in tax rates on deferred tax assets and liabilities are recognized in income in the period that includes the enactment date. A valuation allowance is established for deferred tax assets when management determines that it is more likely than not that some portion or all of a deferred tax asset will not be realized. In making such determinations, the Company considers all available positive and negative evidence that may impact the realization of deferred tax assets. These considerations include the amount of taxable income generated in statutory carryback periods, future reversals of existing taxable temporary differences, projected future taxable income and available tax planning strategies. The Company recognizes tax benefits from uncertain tax positions when it is more likely than not that the related tax positions will be sustained upon examination, including resolutions of any related appeals or litigation processes, based on the technical merits of the tax positions. An uncertain tax position is a position taken in a previously filed tax return or a position expected to be taken in a future tax return that is not based on clear and unambiguous tax law. The Company measures tax benefits related to uncertain tax positions based on the largest benefit that has a greater than 50% likelihood of being realized upon settlement. If the initial assessment fails to result in recognition of a tax benefit, the Company subsequently recognizes a tax benefit if (i) there are changes in tax law or case law that raise the likelihood of prevailing on the technical merits of the position to more-likely-than-not, (ii) the statute of limitations expires, or (iii) there is a completion of an examination resulting in a settlement of that tax year or position with the appropriate agency. The Company recognizes interest and penalties related to uncertain tax positions, as well as interest income or expense related to tax settlements, in the provision for income taxes.
Share-based Payment Arrangement	Equity Based Compensation The Company periodically grants unvested or restricted shares of common stock and other share-based awards to key employees. For equity classified awards, compensation cost is measured based on the estimated fair value of the awards at the grant date and is recognized in earnings on a straight-line basis over the requisite service period for each award. Liability-classified awards are remeasured each reporting period at fair value until the award is settled, and compensation cost is recognized in earnings on a straight-line basis over the requisite service period for each award, adjusted for changes in fair value each reporting period. Compensation cost related to awards that embody performance conditions is recognized when it is probable that the performance conditions will be achieved. The number of awards expected to vest is estimated in determining the amount of compensation cost to be recognized related to share-based payment transactions. The fair value of unvested shares is generally based on the closing market price of the Company's common stock at the date of grant. Market conditions embedded in awards are reflected in the grant-date fair value of the awards.
Derivatives, Policy	Derivative Financial Instruments and Hedging Activities Interest rate derivative contracts The Company uses interest rate derivative contracts, such as swaps, caps, floors and collars, in the normal course of business to meet the financial needs of its customers and to manage exposure to changes in interest rates. Interest rate contracts are recorded as assets or liabilities in the consolidated balance sheets at fair value. Interest rate swaps that are used as a risk management tool to hedge the Company's exposure to changes in interest rates have been designated as cash flow or fair value hedging instruments. The gain or loss resulting from changes in the fair value of interest rate swaps designated and qualifying as cash flow hedging instruments is initially reported as a component of other comprehensive income and subsequently reclassified into earnings in the same period in which the hedged transaction affects earnings. Changes in the fair value of interest rate swaps designated as fair value hedging instruments as well as changes in the fair value of the hedged items caused by fluctuations in the designated benchmark interest rates are recognized in earnings. The Company discontinues hedge accounting prospectively when it is determined that the derivative is no longer effective in offsetting changes in the cash flows or fair value of the hedged item, the derivative expires or is sold, terminated, or exercised, management determines that the designation of the derivative as a hedging instrument is no longer appropriate or, for a cash flow hedge, the occurrence of the forecasted transaction is no longer probable. When hedge accounting on a cash flow hedge is discontinued, any subsequent changes in fair value of the derivative are recognized in earnings. The cumulative unrealized gain or loss related to a discontinued cash flow hedge continues to be reported in AOCI and is subsequently reclassified into earnings in the same period in which the hedged transaction affects earnings, unless it is probable that the forecasted transaction will not occur by the end of the originally specified time period, in which case the cumulative unrealized gain or loss reported in AOCI is reclassified into earnings immediately. When hedge accounting on a fair value hedge is discontinued, adjustments to the carrying amount of the hedged item due to changes in fair value are also discontinued. Cash flows resulting from derivative financial instruments that are accounted for as hedges are classified in the cash flow statement in the same category as the cash flows from the hedged items. Changes in the fair value of interest rate contracts not designated as, or not qualifying as, hedging instruments are recognized currently in earnings.
Transfers and Servicing of Financial Assets, Servicing of Financial Assets, Policy	Transfers of Financial Assets Transfers of financial assets are accounted for as sales when control over the assets has been surrendered. A gain or loss is recognized in earnings upon completion of the sale based on the difference between the sales proceeds and the carrying value of the assets. Control over the transferred assets is deemed to have been surrendered when: (i) the assets have been legally isolated from the Company, (ii) the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets, and (iii) the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity or the ability to unilaterally cause the holder to return specific assets.
Advertising Cost	Advertising Costs Advertising costs are expensed as incurred.
Earnings Per Share, Policy	Earnings per Common Share Basic earnings per common share is calculated by dividing income allocated to common stockholders for basic earnings per common share by the weighted average number of common shares outstanding for the period, reduced by average unvested stock awards. Unvested stock awards with non-forfeitable rights to dividends, whether paid or unpaid, and stand-alone dividend participation rights are considered participating securities and are included in the computation of basic earnings per common share using the two class method whereby net income is allocated between common stock and participating securities. In periods of a net loss, no allocation is made to participating securities as they are not contractually required to fund net losses. Diluted earnings per common share is computed by dividing income allocated to common stockholders for basic earnings per common share, adjusted for earnings reallocated from participating securities, by the weighted average number of common shares outstanding for the period increased for the dilutive effect of unexercised stock options and unvested stock awards using the treasury stock method. Contingently issuable shares are included in the calculation of earnings per common share as if the end of the respective period was the end of the contingency period.
Revenue	Revenue From Contracts with Customers Revenue from contracts with customers within the scope of Topic 606 "Revenue from Contracts with Customers", is recognized in an amount that reflects the consideration the Company expects to be entitled to receive in exchange for those goods or services as the related performance obligations are satisfied. The majority of our revenues, including revenues from loans, leases, investment securities, derivative instruments and letters of credit and from transfers and servicing of financial assets, are excluded from the scope of Topic 606. Deposit service charges and fees is the most significant category of revenue within the scope of the standard. These service charges and fees consist primarily of monthly maintenance fees and other transaction based fees. Revenue is recognized when our performance obligations are complete, generally monthly for account maintenance fees or when a transaction, such as a wire transfer, is completed. Payment is typically received at the time the performance obligation is satisfied. The aggregate amount of revenue that is within the scope of Topic 606 from sources other than deposit service charges and fees is not material.
Reclassification, Policy	Reclassifications Certain amounts presented for prior periods have been reclassified to conform to the current period presentation.
New Accounting Pronouncements, Policy [Policy Text Block]	New Accounting Pronouncements Adopted in 2020 ASU No. 2016-13, Financial Instruments - Credit Losses (Topic 326); Measurement of Credit Losses on Financial Instruments. The ASU, along with subsequent ASUs issued to clarify certain of its provisions, introduced new guidance which made substantive changes to the accounting for credit losses. The ASU introduced the CECL model which applies to financial assets subject to credit losses and measured at amortized cost, as well as certain off-balance sheet credit exposures. This includes loans, loan commitments, standby letters of credit, net investments in leases recognized by a lessor and HTM debt securities. The CECL model requires an entity to estimate credit losses expected over the life of an exposure, considering information about historical events, current conditions and reasonable and supportable forecasts, and is generally expected to result in earlier recognition of credit losses. The ASU also modified certain provisions of the previous OTTI model for AFS debt securities. Credit losses on AFS debt securities are now limited to the difference between the security's amortized cost basis and its fair value, and should be recognized through an allowance for credit losses rather than as a direct reduction in amortized cost basis. The Company adopted this ASU in the first quarter of 2020 using the modified retrospective transition method for the CECL model and a prospective approach for the AFS debt security model. The Company recorded a cumulative-effect adjustment to retained earnings of $23.8 million, which included $4.8 million related to off -balance sheet credit exposures, on January 1, 2020. No cumulative-effect adjustment was recorded related to AFS debt securities upon adoption. The Company has elected to phase-in the initial impact of the adoption of ASC 326 for regulatory capital purposes, allowing the impact of adoption on regulatory capital to be delayed for two years, followed by a three-year transition period. ASU No. 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting. The ASU provides optional relief for a limited period of time to ease the potential accounting burden associated with transitioning away from reference rates that are expected to be discontinued. Under this ASU, companies are provided with optional expedients and exceptions for applying GAAP to contract modifications and hedging relationships that currently utilize LIBOR as their benchmark rate, subject to certain criteria being met. The amendments in the ASU also apply to contemporaneous modifications of other contract terms related to the replacement of LIBOR. The amendments in the ASU are effective for all entities as of March 12, 2020 and will only be in effect through December 31, 2022. To date, the impact of adoption of this ASU on the Company's consolidated financial position, results of operations, and cash flows has not been material. ASU No. 2021-01, Reference Rate Reform (Topic 848). This ASU clarifies that certain optional expedients and exceptions provided for in ASU No. 2020-04 for applying GAAP to contract modifications and hedging relationships apply to derivatives that are affected by the discounting transition. The amendments in this ASU are elective and apply to all entities that have derivative instruments that use an interest rate for margining, discounting, or contract price alignment that is modified as a result of reference rate reform. This ASU is effective immediately for all entities and it can be applied on a retrospective basis as of any date from the beginning of an interim period that includes or is subsequent to March 22, 2020, or on a prospective basis beginning on January 7, 2021. The Company elected to adopt this ASU on a retrospective basis. To date, the impact of adoption of this ASU on the Company's consolidated financial position, results of operations, and cash flows has not been material.
Description of New Accounting Pronouncements Not yet Adopted [Text Block]	Accounting Pronouncements Not Yet Adopted ASU No. 2019-12, Income Taxes (Topic 740): Simplifying the Accounting for Income Taxes. This ASU simplifies the accounting for income taxes by removing certain exceptions stipulated in ASC 740 and making some other targeted changes to the accounting for income taxes. The Company adopted this ASU on January 1, 2021 with no material impact on the Company’s consolidated financial position, results of operations, and cash flows.

Earnings Per Common Share (Tables)

12 Months Ended

Dec. 31, 2020

Earnings Per Share [Abstract]

Computation of Basic and Diluted Earnings Per Common Share

The computation of basic and diluted earnings per common share is presented below for the years ended December 31, 2020, 2019 and 2018 (in thousands, except share and per share data):



c	2020		2019		2018
Basic earnings per common share:
Numerator:
Net income	$	197,853	$	313,098	$	324,866
Distributed and undistributed earnings allocated to participating securities	(8,882)		(13,371)		(13,047)
Income allocated to common stockholders for basic earnings per common share	$	188,971	$	299,727	$	311,819
Denominator:
Weighted average common shares outstanding	92,869,736		96,581,290		104,916,865
Less average unvested stock awards	(1,163,480)		(1,127,275)		(1,171,994)
Weighted average shares for basic earnings per common share	91,706,256		95,454,015		103,744,871
Basic earnings per common share	$	2.06	$	3.14	$	3.01
Diluted earnings per common share:
Numerator:
Income allocated to common stockholders for basic earnings per common share	$	188,971	$	299,727	$	311,819
Adjustment for earnings reallocated from participating securities	(123)		(175)		(195)
Income used in calculating diluted earnings per common share	$	188,848	$	299,552	$	311,624
Denominator:
Weighted average shares for basic earnings per common share	91,706,256		95,454,015		103,744,871
Dilutive effect of stock options	24,608		202,890		332,505
Weighted average shares for diluted earnings per common share	91,730,864		95,656,905		104,077,376
Diluted earnings per common share	$	2.06	$	3.13	$	2.99

Investment Securities (Tables)

12 Months Ended

Dec. 31, 2020

Dec. 31, 2019

Investments, Debt and Equity Securities [Abstract]

Schedule of Available-for-sale Securities Reconciliation


	2020

	Amortized Cost		Gross Unrealized				Carrying Value (1)
			Gains		Losses
Investment securities available for sale:
U.S. Treasury securities	$	79,919	$	1,307	$	(375)	$	80,851
U.S. Government agency and sponsored enterprise residential MBS	2,389,450		19,148		(3,028)		2,405,570
U.S. Government agency and sponsored enterprise commercial MBS	531,724		9,297		(1,667)		539,354

Private label residential MBS and CMOs	982,890		16,274		(561)		998,603
Private label commercial MBS(2)	2,514,271		24,931		(12,848)		2,526,354
Single family rental real estate-backed securities	636,069		14,877		(58)		650,888
Collateralized loan obligations	1,148,724		285		(8,735)		1,140,274
Non-mortgage asset-backed securities	246,597		6,898		(234)		253,261
State and municipal obligations	213,743		21,966		—		235,709
SBA securities	233,387		2,093		(3,935)		231,545

	8,976,774		$	117,076	$	(31,441)	9,062,409
Investment securities held to maturity	10,000						10,000
	$	8,986,774					9,072,409
Marketable equity securities							104,274
							$	9,176,683


	2019

	Amortized Cost		Gross Unrealized				Carrying Value (1)
			Gains		Losses
Investment securities available for sale:
U.S. Treasury securities	$	70,243	$	219	$	(137)	$	70,325
U.S. Government agency and sponsored enterprise residential MBS	2,018,853		9,835		(6,513)		2,022,175
U.S. Government agency and sponsored enterprise commercial MBS	366,787		4,920		(731)		370,976

Private label residential MBS and CMOs	1,001,337		11,851		(1,011)		1,012,177
Private label commercial MBS	1,719,228		6,650		(1,194)		1,724,684
Single family rental real estate-backed securities	467,459		4,016		(1,450)		470,025
Collateralized loan obligations	1,204,905		322		(7,861)		1,197,366
Non-mortgage asset-backed securities	194,171		1,780		(1,047)		194,904
State and municipal obligations	257,528		15,774		—		273,302
SBA securities	359,808		4,587		(1,664)		362,731
	7,660,319		$	59,954	$	(21,608)	7,698,665
Investment securities held to maturity	10,000						10,000
	$	7,670,319					7,708,665
Marketable equity securities							60,572
							$	7,769,237

(1)At fair value except for securities held to maturity.

(2)Amortized cost is net of ACL totaling $0.4 million at December 31, 2020.

Investments Classified by Contractual Maturity Date

At December 31, 2020, contractual maturities of investment securities available for sale, adjusted for anticipated prepayments when applicable, were as follows (in thousands):


	Amortized Cost		Fair Value
Due in one year or less	$	913,305	$	922,531
Due after one year through five years	5,415,656		5,441,360
Due after five years through ten years	2,137,170		2,180,434
Due after ten years	510,643		518,084
	$	8,976,774	$	9,062,409

Gain on Investment Securities, net

The following table provides information about gains and losses on investment securities for the years ended December 31, 2020, 2019 and 2018 (in thousands):



	2020		2019		2018
Proceeds from sale of investment securities available for sale	$	1,503,498	$	2,975,259	$	1,030,810


Gross realized gains:
Investment securities available for sale	$	14,441	$	21,961	$	8,617


Gross realized losses:
Investment securities available for sale	(440)		(3,424)		(2,514)


Net realized gain	14,001		18,537		6,103



Net unrealized gains (losses) on marketable equity securities recognized in earnings	3,766		2,637		(2,944)



Gain on investment securities, net	$	17,767	$	21,174	$	3,159

Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value



	2020
	Less than 12 Months				12 Months or Greater				Total
	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
U.S. Treasury securities	$	24,369	$	(375)	$	—	$	—	$	24,369	$	(375)
U.S. Government agency and sponsored enterprise residential MBS	220,179		(320)		370,727		(2,708)		590,906		(3,028)
U.S. Government agency and sponsored enterprise commercial MBS	152,233		(1,412)		44,255		(255)		196,488		(1,667)

Private label residential MBS and CMOs	141,407		(561)		—		—		141,407		(561)
Private label commercial MBS	1,268,381		(12,771)		37,783		(77)		1,306,164		(12,848)
Single family rental real estate-backed securities	28,758		(58)		—		—		28,758		(58)
Collateralized loan obligations	304,051		(1,171)		588,463		(7,564)		892,514		(8,735)
Non-mortgage asset-backed securities	—		—		12,327		(234)		12,327		(234)

SBA securities	26,240		(298)		104,598		(3,637)		130,838		(3,935)

	$	2,165,618	$	(16,966)	$	1,158,153	$	(14,475)	$	3,323,771	$	(31,441)



	2019
	Less than 12 Months				12 Months or Greater				Total
	Fair Value		Unrealized Losses		Fair Value		Unrealized Losses		Fair Value		Unrealized Losses
U.S. Treasury securities	$	20,056	$	(137)	$	—	$	—	$	20,056	$	(137)
U.S. Government agency and sponsored enterprise residential MBS	579,076		(3,862)		243,839		(2,651)		822,915		(6,513)
U.S. Government agency and sponsored enterprise commercial MBS	99,610		(696)		6,477		(35)		106,087		(731)

Private label residential MBS and CMOs	180,398		(838)		41,636		(173)		222,034		(1,011)
Private label commercial MBS	648,761		(1,060)		76,302		(134)		725,063		(1,194)
Single family rental real estate-backed securities	241,915		(1,445)		5,460		(5)		247,375		(1,450)
Collateralized loan obligations	63,310		(846)		682,076		(7,015)		745,386		(7,861)
Non-mortgage asset-backed securities	78,964		(962)		7,883		(85)		86,847		(1,047)

SBA securities	10,236		(2)		142,204		(1,662)		152,440		(1,664)

	$	1,922,326	$	(9,848)	$	1,205,877	$	(11,760)	$	3,128,203	$	(21,608)

Loans and Allowance for Credit Losses (Tables)

12 Months Ended

Dec. 31, 2020

Dec. 31, 2019

Receivables [Abstract]

Schedule of Accounts, Notes, Loans and Financing Receivable

At December 31, 2020 and 2019, loans consisted of the following (dollars in thousands):



	2020				2019
	Total		Percent of Total		Total		Percent of Total
Residential and other consumer:
1-4 single family residential	$	4,922,836	20.6	%	$	4,953,936	21.4	%
Government insured residential	1,419,074		5.9	%	698,644		3.0	%
Other consumer loans	6,312		0.1	%	8,539		0.1	%
	6,348,222		26.6	%	5,661,119		24.5	%
Commercial:
Multi-family	1,639,201		6.9	%	2,217,705		9.6	%
Non-owner occupied commercial real estate	4,963,273		20.8	%	5,030,904		21.7	%
Construction and land	293,307		1.2	%	243,925		1.1	%
Owner occupied commercial real estate	2,000,770		8.4	%	2,062,808		8.9	%
Commercial and industrial	4,447,383		18.6	%	4,655,349		20.1	%
PPP	781,811		3.3	%	—		—	%
Pinnacle	1,107,386		4.6	%	1,202,430		5.2	%
Bridge - franchise finance	549,733		2.3	%	627,482		2.6	%
Bridge - equipment finance	475,548		2.0	%	684,794		3.0	%
Mortgage warehouse lending	1,259,408		5.3	%	768,472		3.3	%
	17,517,820		73.4	%	17,493,869		75.5	%
Total loans	23,866,042		100.0	%	23,154,988		100.0	%
Allowance for credit losses	(257,323)				(108,671)
Loans, net	$	23,608,719			$	23,046,317

Allowance for Credit Losses on Financing Receivables



	2020						2019						2018
	Residential and Other Consumer		Commercial		Total		Residential and Other Consumer		Commercial		Total		Residential and Other Consumer		Commercial		Total
Beginning balance	$	11,154	$	97,517	$	108,671	$	10,788	$	99,143	$	109,931	$	10,720	$	134,075	$	144,795
Impact of adoption of ASU 2016-13	8,098		19,207		27,305		—		—		—		—		—		—
Balance after adoption of ASU 2016-13	19,252		116,724		135,976		10,788		99,143		109,931		10,720		134,075		144,795
Provision (recovery)	(556)		182,895		182,339		154		8,750		8,904		1,032		24,893		25,925
Charge-offs(1)(2)	(31)		(69,571)		(69,602)		—		(17,541)		(17,541)		(1,465)		(65,619)		(67,084)
Recoveries	54		8,556		8,610		212		7,165		7,377		501		5,794		6,295
Ending balance	$	18,719	$	238,604	$	257,323	$	11,154	$	97,517	$	108,671	$	10,788	$	99,143	$	109,931

(1)Includes $14.7 million of charge-offs related to $49.6 million of classified loans that were sold or transferred to held for sale during the year ended December 31, 2020.

(2)Includes charge-offs of $39.7 million related to taxi medallion loans during the year ended December 31, 2018.

The following table presents the components of the provision for credit losses for the year ended December 31, 2020 (in thousands):


Amount related to funded portion of loans	$	182,339
Amount related to off-balance sheet credit exposures	(5,572)
Amount related to accrued interest receivable	1,300
Provision for credit losses - AFS debt securities	364
Total provision for credit losses	$	178,431

The following table presents information about the balance of the ALLL and related loans as of December 31, 2019 (in thousands):



	Residential and Other Consumer		Commercial		Total
Allowance for loan and lease losses:
Ending balance	$	11,154	$	97,517	$	108,671
Ending balance: loans individually evaluated for impairment	$	9	$	20,481	$	20,490
Ending balance: loans collectively evaluated for impairment	$	11,145	$	77,036	$	88,181
Ending balance: ACI loans	$	—	$	—	$	—
Loans:
Ending balance	$	5,661,119	$	17,493,869	$	23,154,988
Ending balance: loans individually evaluated for impairment	$	57,117	$	187,788	$	244,905
Ending balance: loans collectively evaluated for impairment	$	5,454,422	$	17,288,901	$	22,743,323
Ending balance: ACI loans	$	149,580	$	17,180	$	166,760

Financing Receivable Credit Quality Indicators

FICO scores are generally updated at least annually, and were most recently updated in the third quarter of 2020. LTVs are typically at origination since we do not routinely update residential appraisals. Substantially all of the government insured residential loans are government insured buyout loans, which the Company buys out of GNMA securitizations upon default. For these loans, traditional measures of credit quality are not particularly relevant considering the guaranteed nature of the loans and the underlying business model. Factors that impact risk inherent in the residential portfolio segment include national and regional economic conditions such as levels of unemployment and wages, as well as residential property values.

1-4 Single Family Residential credit exposure, excluding government insured residential loans, based on delinquency status:


	December 31, 2020
	Amortized Cost By Origination Year
	2020		2019		2018		2017		2016		Prior		Total
Current	$	1,092,183	$	645,993	$	374,838	$	611,377	$	740,749	$	1,392,192	$	4,857,332
30 - 59 Days Past Due	17,826		5,741		2,564		927		2,913		18,880		48,851
60 - 89 Days Past Due	111		145		435		—		2,825		3,973		7,489
90 Days or More Past Due	—		807		1,762		53		1,027		5,515		9,164
	$	1,110,120	$	652,686	$	379,599	$	612,357	$	747,514	$	1,420,560	$	4,922,836


	December 31, 2019
	Amortized Cost By Origination Year
	2019		2018		2017		2016		2015		Prior		Total
Current	$	804,913	$	609,814	$	830,710	$	783,318	$	633,833	$	1,225,030	$	4,887,618
30 - 59 Days Past Due	13,915		3,003		3,751		8,419		4,308		12,238		45,634
60 - 89 Days Past Due	1,785		442		137		486		1,766		4,962		9,578
90 Days or More Past Due	—		1,762		914		—		5,030		3,400		11,106
	$	820,613	$	615,021	$	835,512	$	792,223	$	644,937	$	1,245,630	$	4,953,936

1-4 Single Family Residential credit exposure, excluding government insured residential loans, based on LTV:


	December 31, 2020
	Amortized Cost By Origination Year
LTV	2020		2019		2018		2017		2016		Prior		Total
Less than 61%	$	395,977	$	143,273	$	82,199	$	174,223	$	286,092	$	487,487	$	1,569,251
61% - 70%	298,941		151,633		92,928		119,381		184,119		341,159		1,188,161
71% - 80%	413,003		344,998		181,852		271,605		258,931		565,781		2,036,170
More than 80%	2,199		12,782		22,620		47,148		18,372		26,133		129,254
	$	1,110,120	$	652,686	$	379,599	$	612,357	$	747,514	$	1,420,560	$	4,922,836


	December 31, 2019
	Amortized Cost By Origination Year
LTV	2019		2018		2017		2016		2015		Prior		Total
Less than 61%	$	171,069	$	134,978	$	183,807	$	228,868	$	197,039	$	372,221	$	1,287,982
61% - 70 %	195,572		128,766		152,502		188,856		154,307		316,031		1,136,034
71% - 80%	442,311		313,779		404,743		338,000		283,202		531,377		2,313,412
More than 80%	11,661		37,498		94,460		36,499		10,389		26,001		216,508
	$	820,613	$	615,021	$	835,512	$	792,223	$	644,937	$	1,245,630	$	4,953,936

1-4 Single Family Residential credit exposure, excluding government insured residential loans, based on FICO score:


	December 31, 2020
	Amortized Cost By Origination Year
FICO	2020		2019		2018		2017		2016		Prior		Total
760 or greater	$	843,199	$	435,582	$	225,292	$	451,304	$	549,119	$	956,254	$	3,460,750
720 - 759	223,831		128,875		84,602		102,859		130,592		256,703		927,462
719 or less	43,090		88,229		69,705		58,194		67,803		207,603		534,624
	$	1,110,120	$	652,686	$	379,599	$	612,357	$	747,514	$	1,420,560	$	4,922,836


	December 31, 2019
	Amortized Cost By Origination Year
FICO	2019		2018		2017		2016		2015		Prior		Total
760 or greater	$	470,057	$	340,716	$	534,017	$	533,804	$	430,706	$	763,807	$	3,073,107
720 - 759	242,806		185,939		200,623		178,139		141,748		307,195		1,256,450
719 or less	107,750		88,366		100,872		80,280		72,483		174,628		624,379
	$	820,613	$	615,021	$	835,512	$	792,223	$	644,937	$	1,245,630	$	4,953,936

Credit quality indicators for commercial loans

Commercial credit exposure based on internal risk rating:


	December 31, 2020
	Amortized Cost By Origination Year												Revolving Loans
	2020		2019		2018		2017		2016		Prior				Total
Multi-Family
Pass	$	184,287	$	264,254	$	149,188	$	206,768	$	203,481	$	313,758	$	38,509	$	1,360,245
Special mention	—		390		10,985		11,260		8,400		5,300		—		36,335
Substandard	8,393		25,239		9,645		15,125		43,920		140,299		—		242,621

Total Multi-Family	$	192,680	$	289,883	$	169,818	$	233,153	$	255,801	$	459,357	$	38,509	$	1,639,201

Non-owner occupied commercial real estate
Pass	$	532,567	$	1,070,940	$	706,730	$	442,599	$	462,201	$	607,922	$	99,627	$	3,922,586
Special mention	2,687		56,533		16,271		34,283		43,699		66,370		—		219,843
Substandard	30,401		132,814		69,507		56,219		288,998		242,905		—		820,844

Total non-owner occupied commercial real estate	$	565,655	$	1,260,287	$	792,508	$	533,101	$	794,898	$	917,197	$	99,627	$	4,963,273

Construction and Land
Pass	$	20,860	$	158,413	$	9,003	$	48,657	$	26,845	$	904	$	297	$	264,979
Special mention	—		—		8,010		8,604		4,284		—		—		20,898
Substandard	23		1,366		1,287		—		4,408		346		—		7,430

Total Construction and Land	$	20,883	$	159,779	$	18,300	$	57,261	$	35,537	$	1,250	$	297	$	293,307

Owner occupied commercial real estate
Pass	$	229,670	$	263,138	$	251,413	$	232,171	$	288,403	$	361,130	$	17,281	$	1,643,206
Special mention	2,593		42,485		11,789		41,799		19,839		20,347		17,985		156,837
Substandard	2,615		24,673		21,114		36,411		26,997		79,860		9,057		200,727

Total owner occupied commercial real estate	$	234,878	$	330,296	$	284,316	$	310,381	$	335,239	$	461,337	$	44,323	$	2,000,770

Commercial and industrial
Pass	$	574,601	$	759,384	$	257,451	$	250,787	$	165,105	$	47,086	$	1,882,856	$	3,937,270
Special mention	10,387		49,471		17,096		2,451		20,838		2,977		66,385		169,605
Substandard	21,122		120,275		34,045		14,073		29,907		31,478		89,436		340,336
Doubtful	$	—	$	—	$	—	$	—	$	—	$	172	$	—	$	172
Total commercial and industrial	$	606,110	$	929,130	$	308,592	$	267,311	$	215,850	$	81,713	$	2,038,677	$	4,447,383

PPP
Pass	$	781,811	$	—	$	—	$	—	$	—	$	—	$	—	$	781,811
Total PPP	$	781,811	$	—	$	—	$	—	$	—	$	—	$	—	$	781,811

Pinnacle
Pass	$	165,218	$	118,139	$	70,498	$	208,568	$	203,990	$	340,973	$	—	$	1,107,386



Total Pinnacle	$	165,218	$	118,139	$	70,498	$	208,568	$	203,990	$	340,973	$	—	$	1,107,386

Bridge - Franchise Finance
Pass	$	48,741	$	91,509	$	23,650	$	8,745	$	11,817	$	6,416	$	—	$	190,878
Special mention	2,693		54,271		5,175		4,699		2,088		2,667		—		71,593
Substandard	36,515		101,772		84,064		33,213		16,706		3,297		—		275,567
Doubtful	—		—		10,771		—		924		—		—		11,695
Total Bridge - Franchise Finance	$	87,949	$	247,552	$	123,660	$	46,657	$	31,535	$	12,380	$	—	$	549,733

Bridge - Equipment Finance
Pass	$	23,684	$	137,730	$	66,004	$	50,000	$	36,963	$	49,875	$	—	$	364,256
Special mention	—		—		19,542		16,863		—		—		—		36,405
Substandard	—		30,762		9,894		34,231		—		—		—		74,887

Total Bridge - Equipment Finance	$	23,684	$	168,492	$	95,440	$	101,094	$	36,963	$	49,875	$	—	$	475,548

Mortgage Warehouse Lending
Pass	$	—	$	—	$	—	$	—	$	—	$	—	$	1,259,408	$	1,259,408



Total Mortgage Warehouse Lending	$	—	$	—	$	—	$	—	$	—	$	—	$	1,259,408	$	1,259,408

At December 31, 2020, the balance of revolving loans converted to term loans was immaterial.

The following tables summarize the Company's commercial credit exposure based on internal risk rating, in aggregate, at December 31, 2020 and 2019 (in thousands):



	2020
	Multi-Family		Non-Owner Occupied Commercial Real Estate		Construction and Land		Owner Occupied Commercial Real Estate		Commercial and Industrial		PPP		Pinnacle		Bridge - Franchise Finance		Bridge - Equipment Finance		Mortgage Warehouse Lending		Total
Pass	$	1,360,245	$	3,922,586	$	264,979	$	1,643,206	$	3,937,270	$	781,811	$	1,107,386	$	190,878	$	364,256	$	1,259,408	$	14,832,025
Special mention	36,335		219,843		20,898		156,837		169,605		—		—		71,593		36,405		—		711,516
Substandard - accruing	218,532		756,825		2,676		177,575		285,925		—		—		242,234		74,887		—		1,758,654
Substandard non-accruing	24,089		64,019		4,754		23,152		54,411		—		—		33,333		—		—		203,758
Doubtful	—		—		—		—		172		—		—		11,695		—		—		11,867
	$	1,639,201	$	4,963,273	$	293,307	$	2,000,770	$	4,447,383	$	781,811	$	1,107,386	$	549,733	$	475,548	$	1,259,408	$	17,517,820



	2019
	Multi-Family		Non-Owner Occupied Commercial Real Estate		Construction and Land		Owner Occupied Commercial Real Estate		Commercial and Industrial		Pinnacle		Bridge - Franchise Finance		Bridge - Equipment Finance		Mortgage Warehouse Lending		Total
Pass	$	2,184,771	$	4,932,279	$	240,734	$	1,991,556	$	4,508,563	$	1,202,430	$	562,042	$	663,855	$	768,472	$	17,054,702
Special mention	—		5,831		—		27,870		28,498		—		10,682		—		—		72,881
Substandard -accruing	26,797		52,697		—		16,241		43,518		—		41,127		—		—		180,380
Substandard non-accruing	6,137		40,097		3,191		27,141		74,770		—		13,631		20,939		—		185,906

	$	2,217,705	$	5,030,904	$	243,925	$	2,062,808	$	4,655,349	$	1,202,430	$	627,482	$	684,794	$	768,472	$	17,493,869

Financing Receivable, Past Due

The following table presents an aging of loans at December 31, 2020 and 2019 (in thousands):



	2020										2019
	Current		30 - 59 Days Past Due		60 - 89 Days Past Due		90 Days or More Past Due		Total		Current		30 - 59 Days Past Due		60 - 89 Days Past Due		90 Days or More Past Due		Total
1-4 single family residential	$	4,857,332	$	48,851	$	7,489	$	9,164	$	4,922,836	$	4,887,618	$	45,634	$	9,578	$	11,106	$	4,953,936
Government insured residential	722,367		77,883		56,495		562,329		1,419,074		93,560		45,347		30,426		529,311		698,644

Other consumer loans	6,022		37		22		231		6,312		8,539		—		—		—		8,539
Multi-family	1,602,990		17,842		—		18,369		1,639,201		2,217,705		—		—		—		2,217,705
Non-owner occupied commercial real estate	4,876,823		34,117		20,291		32,042		4,963,273		5,015,458		—		928		14,518		5,030,904
Construction and land	288,032		4,530		399		346		293,307		240,647		2,396		—		882		243,925
Owner occupied commercial real estate	1,971,475		10,756		3,203		15,336		2,000,770		2,041,352		1,336		4,420		15,700		2,062,808
Commercial and industrial	4,366,009		52,117		552		28,705		4,447,383		4,595,847		2,313		4,301		52,888		4,655,349
PPP	781,811		—		—		—		781,811		—		—		—		—		—
Pinnacle	1,107,386		—		—		—		1,107,386		1,202,430		—		—		—		1,202,430
Bridge - franchise finance	498,831		16,423		8,664		25,815		549,733		610,315		3,840		2,501		10,826		627,482
Bridge - equipment finance	475,548		—		—		—		475,548		677,089		7,705		—		—		684,794
Mortgage warehouse lending	1,259,408		—		—		—		1,259,408		768,472		—		—		—		768,472
	$	22,814,034	$	262,556	$	97,115	$	692,337	$	23,866,042	$	22,359,032	$	108,571	$	52,154	$	635,231	$	23,154,988

Impaired Financing Receivables

The following table presents information about loans on non-accrual status at December 31, 2020 and 2019 (in thousands):



	2020				2019
	Amortized Cost		Amortized Cost With No Related Allowance		Amortized Cost
Residential and other consumer	$	28,828	$	1,755	$	18,894
Commercial:
Multi-family	24,090		24,090		6,138
Non-owner occupied commercial real estate	64,017		32,843		40,097
Construction and land	4,754		4,408		3,191
Owner occupied commercial real estate	23,152		2,110		27,141
Commercial and industrial	54,584		9,235		74,757

Bridge - franchise finance	45,028		9,754		13,631
Bridge - equipment finance	—		—		20,939
	$	244,453	$	84,195	$	204,788

The table below presents information about loans identified as impaired as of December 31, 2019 (in thousands):



	Recorded Investment		UPB		Related Specific Allowance
With no specific allowance recorded:
1-4 single family residential	$	992	$	989	$	—
Government insured residential	53,428		53,350		—


Multi-family	6,138		6,169		—
Non-owner occupied commercial real estate	38,345		38,450		—
Construction and land	3,191		3,155		—
Owner occupied commercial real estate	17,419		17,488		—
Commercial and industrial	10,585		10,574		—

Bridge - franchise finance	4,115		4,117		—
Bridge - equipment finance	6,807		6,793		—
With a specific allowance recorded:
1-4 single family residential	2,697		2,652		9






Owner occupied commercial real estate	2,522		2,509		401
Commercial and industrial	63,531		63,709		13,992

Bridge - franchise finance	21,011		21,050		2,953
Bridge - equipment finance	14,124		14,024		3,135
Total:
Residential and other consumer	$	57,117	$	56,991	$	9
Commercial	187,788		188,038		20,481
	$	244,905	$	245,029	$	20,490

The following table presents the average recorded investment in impaired loans for the years ended December 31, 2019 and 2018 (in thousands):



	2019		2018
Residential and other consumer:
1-4 single family residential	$	4,525	$	5,227
Government insured residential	18,574		1,426

	23,099		6,653
Commercial:
Multi-family	20,972		25,679
Non-owner occupied commercial real estate	25,814		14,106
Construction and land	7,621		6,551
Owner occupied commercial real estate	14,250		16,207
Commercial and industrial	36,698		97,388
Bridge - franchise finance	10,195		1,986
Bridge - equipment finance	13,981		7,771
	129,531		169,688
	$	152,630	$	176,341

Schedule of Collateral Dependent Loans

The following table presents the amortized cost basis of collateral dependent loans at December 31, 2020 (in thousands):


	Amortized Cost		Extent to Which Secured by Collateral

Residential and other consumer	$	2,528	$	2,513
Commercial:
Multi-family	24,090		24,090
Non-owner occupied commercial real estate	52,813		52,435
Construction and land	4,754		4,754
Owner occupied commercial real estate	14,814		14,777
Commercial and industrial	28,112		18,093
Bridge - franchise finance	28,986		12,832

Total commercial	153,569		126,981
	$	156,097	$	129,494

Financing Receivable, Troubled Debt Restructuring

Troubled debt restructurings


	Years Ended December 31,
	2020
	Loans Modified in TDRs During the Period			TDRs Experiencing Payment Defaults During the Period
	Number of TDRs	Amortized Cost		Number of TDRs	Amortized Cost
1-4 single family residential	1	$	201	—	$	—
Government insured residential	201	34,100		86	14,368


Non-owner occupied commercial real estate	1	4,122		1	4,122




Bridge - franchise finance	8	12,964		8	12,964

	211	$	51,387	95	$	31,454



	2019
	Loans Modified in TDRs During the Period			TDRs Experiencing Payment Defaults During the Period
	Number of TDRs	Amortized Cost		Number of TDRs	Amortized Cost
1-4 single family residential	2	$	557	—	$	—
Government insured residential	324	51,022		112	17,421


Non-owner occupied commercial real estate	1	11,496		—	—

Owner occupied commercial real estate	1	908		1	908
Commercial and industrial	7	20,239		2	8,673

Bridge - franchise finance	4	15,288		—	—

	339	$	99,510	115	$	27,002



	2018
	Loans Modified in TDRs During the Period			TDRs Experiencing Payment Defaults During the Period
	Number of TDRs	Amortized Cost		Number of TDRs	Amortized Cost
1-4 single family residential	10	$	3,669	3	$	929
Government insured residential	26	2,793		15	1,560


Non-owner occupied commercial real estate	3	5,932		1	2,949

Owner occupied commercial real estate	2	1,076		—	—
Commercial and industrial	6	6,646		2	217



	47	$	20,116	21	$	5,655

Concentration Risk Disclosure



	2020				2019
	Total		Percent of Total		Total		Percent of Total
California	$	1,541,779	31.3	%	$	1,280,243	25.8	%
New York	1,084,143		22.0	%	1,057,926		21.4	%
Florida	518,877		10.5	%	597,359		12.1	%
Virginia	196,641		4.0	%	189,869		3.8	%
Washington DC	166,025		3.4	%	187,049		3.8	%
All others	1,415,371		28.8	%	1,641,490		33.1	%
	$	4,922,836	100.0	%	$	4,953,936	100.0	%

The following table presents the largest geographic concentrations of commercial loans at December 31, 2020 and 2019 (dollars in thousands):


	2020								2019
	Commercial Real Estate		Percent of Total		Commercial		Percent of Total		Commercial Real Estate		Percent of Total		Commercial		Percent of Total
Florida	$	3,659,310	53.1	%	$	4,044,377	38.1	%	$	3,476,657	46.4	%	$	4,051,924	40.5	%
New York Tri-state	2,652,980		38.5	%	2,570,974		24.2	%	3,423,564		45.7	%	2,110,915		21.1	%
California	1,003		—	%	775,989		7.3	%	249		—	%	719,465		7.2	%
Other	582,488		8.4	%	3,230,699		30.4	%	592,064		7.9	%	3,119,031		31.2	%
	$	6,895,781	100.0	%	$	10,622,039	100.0	%	$	7,492,534	100.0	%	$	10,001,335	100.0	%

Leases Leases (Tables)

12 Months Ended

Dec. 31, 2020

Leases [Abstract]

Schedule of ROU Assets and Lease Liabilities [Table Text Block]

The following table presents ROU assets and lease liabilities as of December 31, 2020 and 2019 (in thousands):


	2020		2019
ROU assets:
Operating leases	$	84,874	$	92,553
Finance leases	29,119		31,587
	$	113,993	$	124,140
Lease liabilities:
Operating leases	$	93,678	$	102,264
Finance leases	32,563		34,248
	$	126,241	$	136,512

Operating and Finance Lease Information [Table Text Block]

The weighted average remaining lease term and weighted average discount rate at December 31, 2020 and 2019 were:


	2020		2019
Weighted average remaining lease term:
Operating leases	7.2 years		7.7 years
Finance leases	12.7 years		13.6 years
Weighted average discount rate:
Operating leases	3.1	%	3.3	%
Finance leases	2.9	%	2.9	%

Lease, Cost [Table Text Block]

The following table presents the components of lease expense for the years ended December 31, 2020 and 2019 (in thousands):



	2020		2019
Operating lease cost:
Fixed costs	$	20,112	$	20,284
Impairment of ROU assets	108		1,278
Total operating lease cost	$	20,220	$	21,562

Finance lease cost:
Amortization of ROU assets	$	2,841	$	1,642
Interest on lease liabilities	921		1,002
Total finance lease cost	$	3,762	$	2,644

Variable lease cost	$	4,761	$	3,950

Short-term lease costs and sublease income were immaterial for the years ended December 31, 2020 and 2019.

Leases - Cash Flow Information [Table Text Block]

Additional information related to operating and finance leases for the years ended December 31, 2020 and 2019 follows (in thousands):



	2020		2019
Cash paid for amounts included in the measurement of lease liabilities:
Operating cash flows from finance leases	$	921	$	1,002
Operating cash flows from operating leases	20,589		20,795
Financing cash flows from finance leases	2,980		2,529
	$	24,490	$	24,326

Lease liabilities recognized from obtaining ROU assets:
Operating lease liabilities recognized upon adoption of ASC 842	$	—	$	104,064
Operating leases	9,647		15,778
Finance leases	373		27,415
	$	10,020	$	147,257

Schedule of Future Minimum Lease Payments for Operating and Finance Leases [Table Text Block]

Future lease payment obligations under leases with terms in excess of one year and a reconciliation to lease liabilities as of December 31, 2020 were as follows (in thousands):


	Operating Leases		Finance Leases		Total
Years ending December 31:
2021	$	19,949	$	3,213	$	23,162
2022	16,879		2,650		19,529
2023	14,431		2,666		17,097
2024	12,658		2,701		15,359
2025	9,966		2,774		12,740
Thereafter	31,072		25,223		56,295
Total future minimum lease payments	104,955		39,227		144,182
Less: interest component	(11,277)		(6,664)		(17,941)
Lease liabilities	$	93,678	$	32,563	$	126,241

Schedule of Direct or Sales Type Finance Leases [Table Text Block]


	2020		2019
Total minimum lease payments to be received	$	727,401	$	804,103
Estimated unguaranteed residual value of leased assets	5,599		8,471
Gross investment in direct or sales type financing leases	733,000		812,574
Unearned income	(66,443)		(84,175)
Initial direct costs	3,306		4,453
	$	669,863	$	732,852

Schedule of future minimum lease payments under direct or sales type financing leases [Table Text Block]

At December 31, 2020, future minimum lease payments to be received under direct or sales type financing leases were as follows (in thousands):


Years Ending December 31:
2021	$	192,486
2022	140,263
2023	109,887
2024	66,254
2025	49,463
Thereafter	169,048
	$	727,401

Schedule of Property Subject to or Available for Operating Lease [Table Text Block]

The following table presents the components of operating lease equipment as of December 31, 2020 and 2019 (in thousands):


	2020		2019
Operating lease equipment	$	844,953	$	844,015
Less: accumulated depreciation	(181,436)		(145,862)
Operating lease equipment, net	$	663,517	$	698,153

Schedule of Future Minimum Rental Payments for Operating Leases [Table Text Block]

At December 31, 2020, scheduled minimum rental payments under operating leases were as follows (in thousands):


Years Ending December 31:
2021	$	49,246
2022	44,525
2023	38,263
2024	33,856
2025	27,612
Thereafter	54,845
	$	248,347

Operating and Direct Finance Lease Income

he following table summarizes lease income recognized for operating leases and direct or sales type finance leases for the years ended December 31, 2020 and 2019 (in thousands):


	2020		2019		Location of Lease Income on Consolidated Statements of Income
Operating leases	$	59,112	$	66,631	Non-interest income from lease financing
Direct or sales type finance leases	20,995		21,865		Interest income on loans
	$	80,107	$	88,496

Deposits (Tables)

12 Months Ended

Dec. 31, 2020

Brokers and Dealers [Abstract]

Summary of Average Balances and Weighted Average Rates Paid on Deposits

The following table presents average balances and weighted average rates paid on deposits for the years ended December 31, 2020, 2019 and 2018 (dollars in thousands):


	2020				2019				2018
	Average Balance		Average Rate Paid		Average Balance		Average Rate Paid		Average Balance		Average Rate Paid
Demand deposits:
Non-interest bearing	$	5,760,309	—	%	$	3,950,612	—	%	$	3,389,191	—	%
Interest bearing	2,582,951		0.75	%	1,824,803		1.37	%	1,627,828		1.13	%
Savings and money market	10,843,894		0.79	%	10,922,819		1.81	%	10,634,970		1.38	%
Time	6,617,939		1.43	%	6,928,499		2.34	%	6,617,006		1.81	%
	$	25,805,093	0.77	%	$	23,626,733	1.63	%	$	22,268,995	1.28	%

Time Deposit Maturities

The following table presents maturities of time deposits as of December 31, 2020 (in thousands):


Maturing in:
2021	$	4,655,878
2022	110,183
2023	24,368
2024	1,302
2025	15,468

	$	4,807,199

schedule of interest expense on deposits

Interest expense on deposits for the years ended December 31, 2020, 2019 and 2018 was as follows (in thousands):


	2020		2019		2018
Interest bearing demand	$	19,445	$	25,054	$	18,391
Savings and money market	85,572		197,942		146,324
Time	94,963		162,184		119,848
	$	199,980	$	385,180	$	284,563

Federal Home Loan Bank Advances and Other Borrowings (Tables)

12 Months Ended

Dec. 31, 2020

Federal Home Loan Banks [Abstract]

Schedule of Federal Home Loan Bank, Advances, by Branch of FHLB Bank

The following table presents information about outstanding FHLB advances as of December 31, 2020 (dollars in thousands):


			Range of Interest Rates
	Amount		Minimum		Maximum		Weighted Average Rate
Maturing in:
2021 - One month or less	$	795,000	0.24	%	0.25	%	0.25	%
2021 - Over one month	2,226,000		0.22	%	3.02	%	0.54	%


Thereafter	100,000		0.41	%	0.41	%	0.41	%
Total contractual balance outstanding	3,121,000
Cumulative fair value hedging adjustments	1,999
Carrying value	$	3,122,999

Schedule of Debt

At December 31, 2020 and 2019 notes and other borrowings consisted of the following (dollars in thousands):


	2020		2019
Senior notes:
Principal amount of 4.875% senior notes maturing on November 17, 2025	$	400,000	$	400,000
Unamortized discount and debt issuance costs	(4,174)		(4,910)
	395,826		395,090
Subordinated notes:
Principal amount of 5.125% subordinated notes maturing on June 11, 2030	300,000		—
Unamortized discount and debt issuance costs	(5,894)		—
	294,106		—
Total notes	689,932		395,090
Finance leases	32,563		34,248
Notes and other borrowings	$	722,495	$	429,338

Premises and Equipment and Lease Commitments Property, Plant and Equipment (Tables)

12 Months Ended

Dec. 31, 2020

Property, Plant and Equipment Table [Abstract]

Property, Plant and Equipment [Table Text Block]


	2020		2019
Buildings and improvements	$	430	$	—
Leasehold improvements	69,863		72,627
Furniture, fixtures and equipment	35,903		36,492
Computer equipment	21,358		22,729
Software, software licensing rights and capitalized costs of CCA	74,087		59,568
Aircraft and automobiles	11,620		11,593

	213,261		203,009
Less: accumulated depreciation	(153,138)		(144,905)
Premises, equipment and software, net	$	60,123	$	58,104

Buildings held for sale, net	$	1,427	$	6,789

Income Taxes Income Taxes Table (Tables)

12 Months Ended

Dec. 31, 2020

Income Taxes Table [Abstract]

Schedule of Components of Income Tax Expense (Benefit) [Table Text Block]

The components of the provision for income taxes for the years ended December 31, 2020, 2019 and 2018 were

as follows (in thousands):


	2020		2019		2018
Current:
Federal	$	63,083	$	58,996	$	2,172
State	16,009		7,373		20,834
	79,092		66,369		23,006
Deferred:
Federal	(22,387)		8,255		51,303
State	(5,199)		16,274		16,475
	(27,586)		24,529		67,778
	$	51,506	$	90,898	$	90,784

Schedule of Effective Income Tax Rate Reconciliation [Table Text Block]


	2020				2019				2018
	Amount		Percent		Amount		Percent		Amount		Percent
Tax expense calculated at the statutory federal income tax rate	$	52,366	21.00	%	$	84,839	21.00	%	$	87,286	21.00	%
Increases (decreases) resulting from:
Income not subject to tax	(15,722)		(6.30)	%	(17,950)		(4.44)	%	(18,923)		(4.55)	%
State income taxes, net of federal tax benefit	13,413		5.38	%	19,956		4.94	%	31,182		7.50	%


Other, net	1,449		0.58	%	4,053		1.00	%	(8,761)		(2.11)	%
	$	51,506	20.66	%	$	90,898	22.50	%	$	90,784	21.84	%

Schedule of Deferred Tax Assets and Liabilities [Table Text Block]

The components of deferred tax assets and liabilities at December 31, 2020 and 2019 were as follows (in thousands):


	2020		2019
Deferred tax assets:
Excess of tax basis over carrying value of acquired loans	$	33,532	$	50,089
Allowance for credit losses	58,990		23,151

Net unrealized loss on investment securities available for sale and cash flow hedges	16,824		11,475
Other	74,228		61,152
Gross deferred tax assets	183,574		145,867
Deferred tax liabilities:

Lease financing, due to differences in depreciation	169,103		176,269
Other	34,879		31,227
Gross deferred tax liabilities	203,982		207,496
Net deferred tax liability	$	(20,408)	$	(61,629)

Schedule of Unrecognized Tax Benefits Roll Forward [Table Text Block]


	2020		2019		2018
Balance, beginning of period	$	407,126	$	116,081	$	59,220
Additions for tax positions related to the current year	2,117		5,352		2,399
Additions for tax positions related to prior periods	2,456		279,885		51,064

Reductions due to settlements with taxing authorities	(3,080)		—		—
Reductions due to lapse of the statute of limitations	(520)		(406)		(675)
	408,099		400,912		112,008
Interest and penalties	6,104		6,214		4,073
Balance, end of period	$	414,203	$	407,126	$	116,081

Derivatives and Hedging Activities (Tables)

12 Months Ended

Dec. 31, 2020

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Fair Value Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block]



	2020		2019		2018		Location of Gain (Loss) in Consolidated Statements of Income
Fair value adjustment on derivatives	$	2,485	$	(486)	$	—	Interest expense on borrowings
Fair value adjustment on hedged items	(2,498)		499		—		Interest expense on borrowings
Gain (loss) recognized on fair value hedges (ineffective portion)	$	(13)	$	13	$	—

The following table provides information about the hedged items related to derivatives designated as fair value hedges at December 31, 2020 and 2019 (in thousands):

Derivative and Hedging Activities - Carrying Value of Hedged Item and Cumulative Fair Value Adjustments [Table Text Block]

The following table provides information about the hedged items related to derivatives designated as fair value hedges at December 31, 2020 and 2019 (in thousands):


	2020		2019		Location in Consolidated Balance Sheets
Contractual balance outstanding of hedged item	$	250,000	$	250,000	FHLB advances
Cumulative fair value hedging adjustments	$	1,999	$	(499)	FHLB advances

Schedule of Interest Rate Contract Derivative Financial Instruments and Related Hedged Items



	2020
		Weighted Average Pay Rate	Weighted Average Receive Rate	Weighted Average Remaining Life in Years
					Notional Amount		Balance Sheet Location	Fair Value
	Hedged Item							Asset		Liability
Derivatives designated as cash flow hedges:
Pay-fixed interest rate swaps	Variability of interest cash flows on variable rate borrowings	2.41%	3-Month LIBOR	2.5	$	2,771,000	Other liabilities	$	—	$	(5,971)
Interest rate caps purchased, indexed to Fed Funds effective rate	Variability of interest cash flows on variable rate borrowings	—%	—%	4.9	100,000		Other assets	485		—
Derivatives designated as fair value hedges:
Receive-fixed interest rate swaps	Variability of fair value of fixed rate borrowings	3-Month LIBOR	1.55%	0.6	250,000		Other liabilities	—		—
Derivatives not designated as hedges:
Pay-fixed interest rate swaps		3.61%	Indexed to 1-month LIBOR	5.3	1,626,152		Other assets / Other liabilities	—		(38,519)
Pay-variable interest rate swaps		Indexed to 1-month LIBOR	3.61%	5.3	1,626,152		Other assets	123,345		—
Interest rate caps purchased, indexed to 1-month LIBOR			3.72%	0.4	25,921		Other assets	—		—
Interest rate caps sold, indexed to 1-month LIBOR		3.72%		0.4	25,921		Other liabilities	—		—
					$	6,425,146		$	123,830	$	(44,490)



	2019
		Weighted Average Pay Rate	Weighted Average Receive Rate	Weighted Average Remaining Life in Years
					Notional Amount		Balance Sheet Location	Fair Value
	Hedged Item							Asset		Liability
Derivatives designated as cash flow hedges:
Pay-fixed interest rate swaps	Variability of interest cash flows on variable rate borrowings	2.37%	3-Month LIBOR	3.2	$	3,131,000	Other liabilities	$	—	$	(1,607)
Derivatives designated as fair value hedges:
Receive-fixed interest rate swaps	Variability of interest cash flows on fixed rate borrowings	3-Month LIBOR	1.55%	1.6	250,000		Other liabilities	—		—
Derivatives not designated as hedges
Pay-fixed interest rate swaps		3.72%	Indexed to 1-month LIBOR	6.4	1,460,355		Other assets / Other liabilities	876		(15,307)
Pay-variable interest rate swaps		Indexed to 1-month LIBOR	3.72%	6.4	1,460,355		Other assets / Other liabilities	42,810		(2,115)
Interest rate caps purchased, indexed to 1-month LIBOR			3.30%	0.6	61,004		Other assets	—		—
Interest rate caps sold, indexed to 1-month LIBOR		3.30%		0.6	61,004		Other liabilities	—		—
					$	6,423,718		$	43,686	$	(19,029)

Schedule of Cash Flow Hedging Instruments, Statements of Financial Performance and Financial Position, Location [Table Text Block]



	2020		2019		2018		Location of Gain (Loss) Reclassified from AOCI into Income
Interest rate contracts	$	(46,259)	$	2,627	$	1,999	Interest expense on borrowings

Schedule of Interest Rate Swaps Subject to Master Netting Agreements



	2020
			Gross Amounts Offset in Balance Sheet		Net Amounts Presented in Balance Sheet		Gross Amounts Not Offset in Balance Sheet
	Gross Amounts Recognized						Derivative Instruments		Collateral Pledged		Net Amount
Derivative assets	$	—	$	—	$	—	$	—	$	—	$	—
Derivative liabilities	(44,490)		—		(44,490)		—		44,332		(158)
	$	(44,490)	$	—	$	(44,490)	$	—	$	44,332	$	(158)



	2019
			Gross Amounts Offset in Balance Sheet		Net Amounts Presented in Balance Sheet		Gross Amounts Not Offset in Balance Sheet
	Gross Amounts Recognized						Derivative Instruments		Collateral Pledged		Net Amount
Derivative assets	$	876	$	—	$	876	$	(876)	$	—	$	—
Derivative liabilities	(16,914)		—		(16,914)		876		16,038		—
	$	(16,038)	$	—	$	(16,038)	$	—	$	16,038	$	—

Stockholders' Equity (Tables)

12 Months Ended

Dec. 31, 2020

Equity [Abstract]

Schedule of Changes in AOCI

Changes in other comprehensive income are summarized as follows for the years ended December 31, 2020, 2019 and 2018 (in thousands):



	2020
	Before Tax		Tax Effect		Net of Tax
Unrealized gains on investment securities available for sale:
Net unrealized holding gain arising during the period	$	61,291	$	(15,246)	$	46,045
Amounts reclassified to gain on investment securities available for sale, net	(14,001)		3,570		(10,431)
Net change in unrealized gains on investment securities available for sale	47,290		(11,676)		35,614
Unrealized losses on derivative instruments:
Net unrealized holding loss arising during the period	(116,168)		28,766		(87,402)
Amounts reclassified to interest expense on borrowings	46,259		(11,796)		34,463
Net change in unrealized losses on derivative instruments	(69,909)		16,970		(52,939)
Other comprehensive loss	$	(22,619)	$	5,294	$	(17,325)


	2019
	Before Tax		Tax Effect		Net of Tax
Unrealized gains on investment securities available for sale:
Net unrealized holding gain arising during the period	$	51,178	$	(13,562)	$	37,616
Amounts reclassified to gain on investment securities available for sale, net	(18,537)		4,912		(13,625)
Net change in unrealized gains on investment securities available for sale	32,641		(8,650)		23,991
Unrealized losses on derivative instruments:
Net unrealized holding loss arising during the period	(79,945)		21,185		(58,760)
Amounts reclassified to interest expense on borrowings	(2,627)		696		(1,931)
Net change in unrealized losses on derivative instruments	(82,572)		21,881		(60,691)
Other comprehensive loss	$	(49,931)	$	13,231	$	(36,700)



	2018
	Before Tax		Tax Effect		Net of Tax
Unrealized gains on investment securities available for sale:
Net unrealized holding loss arising during the period	$	(77,607)	$	20,566	$	(57,041)
Amounts reclassified to gain on investment securities available for sale, net	(6,103)		1,617		(4,486)
Net change in unrealized gains on investment securities available for sale	(83,710)		22,183		(61,527)
Unrealized losses on derivative instruments:
Net unrealized holding gain arising during the period	5,416		(1,435)		3,981
Amounts reclassified to interest expense on borrowings	(1,999)		530		(1,469)
Net change in unrealized losses on derivative instruments	3,417		(905)		2,512
Other comprehensive loss	$	(80,293)	$	21,278	$	(59,015)

Schedule of the Categories of AOCI and Changes Therein

The categories of AOCI and changes therein are presented below for the years ended December 31, 2020, 2019 and 2018 (in thousands):



	Unrealized Gain on Investment Securities Available for Sale		Unrealized Gain (Loss) on Derivative Instruments		Total
Balance at December 31, 2017	$	56,534	$	(1,548)	$	54,986
Cumulative effect of adoption of new accounting standards	9,187		(285)		8,902
Other comprehensive loss	(61,527)		2,512		(59,015)
Balance at December 31, 2018	4,194		679		4,873
Other comprehensive loss	23,991		(60,691)		(36,700)
Balance at December 31, 2019	$	28,185	$	(60,012)	$	(31,827)

Other comprehensive loss	35,614		(52,939)		(17,325)
Balance at December 31, 2020	$	63,799	$	(112,951)	$	(49,152)

Equity Based Compensation (Tables)

12 Months Ended

Dec. 31, 2020

Share-based Payment Arrangement [Abstract]

Disclosure of Share-based Compensation Arrangements by Share-based Payment Award [Table Text Block]

Compensation Expense Related to Equity Based Awards

The following table summarizes compensation cost related to equity based awards for the years ended December 31, 2020, 2019 and 2018 (in thousands):


	2020		2019		2018
Compensation cost of equity based awards:
Unvested and restricted share awards	$	15,236	$	17,334	$	19,415
Executive share-based awards	3,133		4,953		3,027
Incentive awards	2,145		1,189		798
Total compensation cost of equity based awards	20,514		23,476		23,240
Related tax benefits	(4,854)		(4,068)		(5,783)
Compensation cost of equity based awards, net of tax	$	15,660	$	19,408	$	17,457

Schedule of Nonvested Share Activity [Table Text Block]

Share Awards

Unvested share awards

A summary of activity related to unvested share awards for the years ended December 31, 2020, 2019 and 2018 follows:


	Number of Share Awards	Weighted Average Grant Date Fair Value
Unvested share awards outstanding, December 31, 2017	1,108,477	$	36.06
Granted	683,137	40.06
Vested	(532,662)	34.64
Canceled or forfeited	(72,714)	38.43
Unvested share awards outstanding, December 31, 2018	1,186,238	38.86
Granted	591,739	36.49
Vested	(561,769)	37.50
Canceled or forfeited	(165,753)	38.95
Unvested share awards outstanding, December 31, 2019	1,050,455	38.24
Granted	660,587	29.72
Vested	(479,057)	38.94
Canceled or forfeited	(70,150)	34.78
Unvested share awards outstanding, December 31, 2020	1,161,835	$	33.32



	2020		2019		2018
Range of the closing price on date of grant (1)	$13.99 - $30.90		$31.07 - $36.65		$33.44 -$42.80
Aggregate grant date fair value of shares vesting	$	18,654	$	21,064	$	18,451

(1)During the year ended December 31, 2020, the Company granted 599,766, 44,534, and 16,287 share awards with a closing price on date of grant of $30.90, $13.99, and $29.17, respectively.

The total unrecognized compensation cost of $22.3 million for all unvested share awards outstanding at December 31, 2020 will be recognized over a weighted average remaining period of 2.6 years.

Share-based Payment Arrangement, Outstanding Award, Activity, Excluding Option [Table Text Block]

A summary of activity related to executive share-based awards for the years ended December 31, 2020, 2019 and 2018 follows:


	RSU	PSU
Unvested executive share-based awards outstanding, December 31, 2017	91,163	105,714
Granted	52,026	52,026
Vested	(52,580)	(57,873)
Unvested executive share-based awards outstanding, December 31, 2018	90,609	99,867
Granted	73,062	73,062
Vested	(51,555)	(47,841)
Unvested executive share-based awards outstanding, December 31, 2019	112,116	125,088
Granted	106,731	106,731
Vested	(62,292)	(52,026)
Unvested executive share-based awards outstanding, December 31, 2020	156,555	179,793

Share-based Payment Arrangement, Option, Activity [Table Text Block]

Option Awards

A summary of activity related to stock option awards for the years ended December 31, 2020, 2019 and 2018 follows:


	Number of Option Awards	Weighted Average Exercise Price
Option awards outstanding, December 31, 2017	1,270,688	$	26.93
Exercised	(291,689)	26.49
Canceled or forfeited	(14,159)	63.74
Option awards outstanding, December 31, 2018	964,840	26.53
Exercised	(225,127)	25.84
Canceled or forfeited	(1,960)	63.74
Option awards outstanding, December 31, 2019	737,753	26.64
Exercised	(735,400)	26.67
Canceled or forfeited	(784)	22.18
Option awards outstanding and exercisable, December 31, 2020	1,569	$	15.94

Fair Value Measurements (Tables)

12 Months Ended

Dec. 31, 2020

Fair Value Disclosures [Abstract]

Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following tables present assets and liabilities measured at fair value on a recurring basis at December 31, 2020 and 2019 (in thousands):



	2020
	Level 1		Level 2		Total
Investment securities available for sale:
U.S. Treasury securities	$	80,851	$	—	$	80,851
U.S. Government agency and sponsored enterprise residential MBS	—		2,405,570		2,405,570
U.S. Government agency and sponsored enterprise commercial MBS	—		539,354		539,354

Private label residential MBS and CMOs	—		998,603		998,603
Private label commercial MBS	—		2,526,354		2,526,354
Single family rental real estate-backed securities	—		650,888		650,888
Collateralized loan obligations	—		1,140,274		1,140,274
Non-mortgage asset-backed securities	—		253,261		253,261
State and municipal obligations	—		235,709		235,709
SBA securities	—		231,545		231,545

Marketable equity securities	104,274		—		104,274
Servicing rights	—		7,073		7,073
Derivative assets	—		123,830		123,830
Total assets at fair value	$	185,125	$	9,112,461	$	9,297,586
Derivative liabilities	$	—	$	(44,490)	$	(44,490)
Total liabilities at fair value	$	—	$	(44,490)	$	(44,490)



	2019
	Level 1		Level 2		Total
Investment securities available for sale:
U.S. Treasury securities	$	70,325	$	—	$	70,325
U.S. Government agency and sponsored enterprise residential MBS	—		2,022,175		2,022,175
U.S. Government agency and sponsored enterprise commercial MBS	—		370,976		370,976

Private label residential MBS and CMOs	—		1,012,177		1,012,177
Private label commercial MBS	—		1,724,684		1,724,684
Single family rental real estate-backed securities	—		470,025		470,025
Collateralized loan obligations	—		1,197,366		1,197,366
Non-mortgage asset-backed securities	—		194,904		194,904
State and municipal obligations	—		273,302		273,302
SBA securities	—		362,731		362,731

Marketable equity securities	60,572		—		60,572
Servicing rights	—		7,977		7,977
Derivative assets	—		43,686		43,686
Total assets at fair value	$	130,897	$	7,680,003	$	7,810,900
Derivative liabilities	$	—	$	(19,029)	$	(19,029)
Total liabilities at fair value	$	—	$	(19,029)	$	(19,029)

Schedule of Assets for Which Nonrecurring Changes in Fair Value have been Recorded

arrying value of assets classified within level 3 of the fair value hierarchy at December 31, 2020 and 2019, for which non-recurring changes in fair value have been recorded during the year then ended (in thousands):


	2020		2019
Collateral dependent loans	$	73,803	$	79,982
Loans held for sale	20,500		—
OREO and repossessed assets	2,786		1,098
Operating lease equipment	—		2,919
	$	97,089	$	83,999

The following table pre

Schedule of the Carrying Value and Fair Value of Financial Instruments

ents the carrying value and fair value of financial instruments and the level within the fair value hierarchy in which those measurements are classified at December 31, 2020 and 2019 (dollars in thousands):



		2020				2019
	Level	Carrying Value		Fair Value		Carrying Value		Fair Value
Assets:
Cash and cash equivalents	1	$	397,716	$	397,716	$	214,673	$	214,673
Investment securities	1/2	$	9,176,683	$	9,177,870	$	7,769,237	$	7,769,949
Non-marketable equity securities	2	$	195,865	$	195,865	$	253,664	$	253,664
Loans held for sale	2	$	24,676	$	25,057	$	37,926	$	39,731
Loans, net	3	$	23,608,719	$	24,205,016	$	23,046,317	$	23,350,684
Derivative assets	2	$	123,830	$	123,830	$	43,686	$	43,686
Liabilities:
Demand, savings and money market deposits	2	$	22,688,617	$	22,688,617	$	17,047,344	$	17,047,344
Time deposits	2	$	4,807,199	$	4,814,862	$	7,347,247	$	7,377,301
Federal funds purchased	2	$	180,000	$	180,000	$	100,000	$	100,000
FHLB advances	2	$	3,122,999	$	3,127,190	$	4,480,501	$	4,500,969
Notes and other borrowings	2	$	722,495	$	849,120	$	429,338	$	473,327
Derivative liabilities	2	$	44,490	$	44,490	$	19,029	$	19,029

Commitments and Contingencies (Tables)

12 Months Ended

Dec. 31, 2020

Commitments and Contingencies Disclosure [Abstract]

Schedule of the Total Lending Related Commitments Outstanding

Total lending related commitments outstanding at December 31, 2020 were as follows (in thousands):


Commitments to fund loans	$	419,526

Unfunded commitments under lines of credit	3,620,155
Commercial and standby letters of credit	93,325
	$	4,133,006

Condensed Financial Statements of BankUnited, Inc. (Tables)

12 Months Ended

Dec. 31, 2020

Condensed Financial Statements [Abstract]

Condensed Balance Sheet [Table Text Block]

Condensed Balance Sheets


	December 31, 2020		December 31, 2019
Assets:
Cash and cash equivalents	$	289,761	$	204,589
Investment securities available for sale, at fair value	104,274		60,572
Investment in BankUnited, N.A.	3,288,252		3,104,660

Other assets	29,978		42,454
Total assets	$	3,712,265	$	3,412,275
Liabilities and Stockholders' Equity:
Notes payable	$	689,932	$	395,090
Other liabilities	39,321		36,406
Stockholders' equity	2,983,012		2,980,779
Total liabilities and stockholders' equity	$	3,712,265	$	3,412,275

Condensed Income Statement [Table Text Block]

Condensed Statements of Income


	Years Ended December 31,
	2020		2019		2018
Income:
Interest and dividends on investment securities available for sale	$	4,214	$	3,595	$	3,532
Service fees from subsidiary	15,935		18,080		21,000
Equity in earnings of subsidiary	224,734		335,723		349,937
Gain (loss) on investment securities	3,822		2,690		(2,805)
Total	248,705		360,088		371,664
Expense:
Interest on borrowings	29,041		20,200		20,165
Employee compensation and benefits	24,867		28,270		28,477
Other	3,711		4,396		5,617
Total	57,619		52,866		54,259
Income before income taxes	191,086		307,222		317,405
Benefit for income taxes	(6,767)		(5,876)		(7,461)
Net income	$	197,853	$	313,098	$	324,866

Condensed Cash Flow Statement [Table Text Block]

Condensed Statements of Cash Flows


	Years Ended December 31,
	2020		2019		2018
Cash flows from operating activities:
Net income	$	197,853	$	313,098	$	324,866
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in undistributed earnings of subsidiaries	(224,734)		(30,723)		70,064
Equity based compensation	20,367		23,367		23,137
Other	10,171		(8,656)		(15,654)
Net cash provided by operating activities	3,657		297,086		402,413
Cash flows from investing activities:

Purchase of marketable equity securities	(53,266)		(8,963)		—
Proceeds from repayments, sale, maturities and calls of investment securities	13,426		11,575		—

Other	—		(142)		(156)
Net cash provided by (used in) investing activities	(39,840)		2,470		(156)
Cash flows from financing activities:
Proceeds from issuance of notes payable	293,858		—		—
Dividends paid	(86,522)		(84,083)		(91,305)
Proceeds from exercise of stock options	19,611		5,817		7,727
Repurchase of common stock	(100,972)		(154,030)		(299,972)
Other	(4,620)		(6,514)		(6,560)
Net cash provided by (used in) financing activities	121,355		(238,810)		(390,110)
Net increase in cash and cash equivalents	85,172		60,746		12,147
Cash and cash equivalents, beginning of period	204,589		143,843		131,696
Cash and cash equivalents, end of period	$	289,761	$	204,589	$	143,843
Supplemental schedule of non-cash investing and financing activities:
Dividends declared, not paid	$	22,309	$	20,775	$	21,673

Quarterly Financial Information (Unaudited) (Tables)

12 Months Ended

Dec. 31, 2020

Quarterly Financial Information Disclosure [Abstract]

Quarterly Financial Information [Table Text Block]

Financial information by quarter for the years ended December 31, 2020 and 2019 follows (in thousands, except per share data):


	2020
	Fourth Quarter		Third Quarter		Second Quarter		First Quarter		Total
Interest income	$	251,120	$	254,572	$	267,778	$	294,139	$	1,067,609
Interest expense	57,754		67,093		77,441		113,563		315,851
Net interest income before provision for credit losses	193,366		187,479		190,337		180,576		751,758
Provision for (recovery of) credit losses	(1,643)		29,232		25,414		125,428		178,431
Net interest income after provision for credit losses	195,009		158,247		164,923		55,148		573,327
Non-interest income	35,280		36,292		38,351		23,298		133,221
Non-interest expense	123,324		108,627		106,370		118,868		457,189
Income (loss) before income taxes	106,965		85,912		96,904		(40,422)		249,359
Provision (benefit) for income taxes	21,228		19,353		20,396		(9,471)		51,506
Net income (loss)	$	85,737	$	66,559	$	76,508	$	(30,951)	$	197,853
Earnings (loss) per common share, basic	$	0.89	$	0.70	$	0.80	$	(0.33)	$	2.06
Earnings (loss) per common share, diluted	$	0.89	$	0.70	$	0.80	$	(0.33)	$	2.06


	2019
	Fourth Quarter		Third Quarter		Second Quarter		First Quarter		Total
Interest income	$	309,410	$	323,402	$	327,229	$	321,829	$	1,281,870
Interest expense	124,099		137,712		136,346		130,928		529,085
Net interest income before provision for credit losses	185,311		185,690		190,883		190,901		752,785
Provision for (recovery of) credit losses	(469)		1,839		(2,747)		10,281		8,904
Net interest income after provision for credit losses	185,780		183,851		193,630		180,620		743,881
Non-interest income	37,756		37,856		35,337		36,255		147,204
Non-interest expense	119,008		121,306		120,085		126,690		487,089
Income before income taxes	104,528		100,401		108,882		90,185		403,996
Provision for income taxes	15,072		24,182		27,431		24,213		90,898
Net income	$	89,456	$	76,219	$	81,451	$	65,972	$	313,098
Earnings per common share, basic	$	0.91	$	0.78	$	0.81	$	0.65	$	3.14
Earnings per common share, diluted	$	0.91	$	0.77	$	0.81	$	0.65	$	3.13

Basis of Presentation and Summary of Significant Accounting Policies (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Jan. 01, 2020	Dec. 31, 2019
Summary of Significant Accounting Policies [Line Items]
Assets	$ 35,010,493		$ 32,871,293
Accounting Standards Update 2016-13 [Member] \| Restatement Adjustment
Summary of Significant Accounting Policies [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption		$ 23,817
Building and Building Improvements [Member] \| Minimum
Summary of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	10 years
Building and Building Improvements [Member] \| Maximum [Member]
Summary of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	30 years
Leasehold Improvements [Member] \| Minimum
Summary of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Leasehold Improvements [Member] \| Maximum [Member]
Summary of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	20 years
Furniture, Fixtures And Equipment [Member] \| Minimum
Summary of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Furniture, Fixtures And Equipment [Member] \| Maximum [Member]
Summary of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	7 years
Computer Equipment [Member] \| Minimum
Summary of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Computer Equipment [Member] \| Maximum [Member]
Summary of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Software, software licensing rights and capitalized costs of CCA \| Minimum
Summary of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Software, software licensing rights and capitalized costs of CCA \| Maximum [Member]
Summary of Significant Accounting Policies [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Off Balance Sheet [Member]
Summary of Significant Accounting Policies [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption		4,800
Retained Earnings \| Accounting Standards Update 2016-13 [Member] \| Restatement Adjustment
Summary of Significant Accounting Policies [Line Items]
Cumulative Effect of New Accounting Principle in Period of Adoption		$ (23,817)

Earnings Per Common Share (Computation of Basic and Diluted Earnings per Common Share) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Numerator:
Net income	$ 85,737	$ 66,559	$ 76,508	$ (30,951)	$ 89,456	$ 76,219	$ 81,451	$ 65,972	$ 197,853	$ 313,098	$ 324,866
Distributed and undistributed earnings allocated to participating securities									(8,882)	(13,371)	(13,047)
Income allocated to common stockholders for basic earnings per common share									$ 188,971	$ 299,727	$ 311,819
Denominator:
Weighted average common shares outstanding									92,869,736	96,581,290	104,916,865
Less average unvested stock awards									(1,163,480)	(1,127,275)	(1,171,994)
Weighted average shares for basic earnings per common share									91,706,256	95,454,015	103,744,871
Basic earnings per common share	$ 0.89	$ 0.70	$ 0.80	$ (0.33)	$ 0.91	$ 0.78	$ 0.81	$ 0.65	$ 2.06	$ 3.14	$ 3.01
Numerator:
Income allocated to common stockholders for basic earnings per common share									$ 188,971	$ 299,727	$ 311,819
Adjustment for earnings reallocated from participating securities									(123)	(175)	(195)
Income used in calculating diluted earnings per common share									$ 188,848	$ 299,552	$ 311,624
Denominator:
Weighted average shares for basic earnings per common share									91,706,256	95,454,015	103,744,871
Dilutive effect of stock options									24,608	202,890	332,505
Weighted average shares for diluted earnings per common share									91,730,864	95,656,905	104,077,376
Diluted earnings per common share	$ 0.89	$ 0.70	$ 0.80	$ (0.33)	$ 0.91	$ 0.77	$ 0.81	$ 0.65	$ 2.06	$ 3.13	$ 2.99

Earnings Per Common Share (Potentially Dilutive Securities Outstanding) (Details) - shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Earnings Per Share [Abstract]
Potentially dilutive securities outstanding (in Shares)	1,638,642	1,050,455	1,463,607

Earnings Per Common Share Earnings per Common Share (Narrative) (Details)	Dec. 31, 2020 shares
Earnings Per Share [Abstract]
Dividend Equivalent Rights	3,023,314

Investment Securities (Schedule of Investment Securities Available for Sale) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 8,976,774	$ 7,660,319
Gross Unrealized Gains	117,076	59,954
Gross Unrealized Losses	(31,441)	(21,608)
Investment securities available for sale, at fair value	9,062,409	7,698,665
Debt Securities, Available-for-sale and Held-to-maturity	8,986,774	7,670,319
Debt Securities, Held-to-maturity, Fair Value	9,072,409	7,708,665
Investment securities (including securities recorded at fair value of $9,166,683 and $7,759,237)	9,176,683	7,769,237
Financing Receivable, Allowance for Credit Loss	257,323	108,671	$ 109,931	$ 144,795
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	79,919	70,243
Gross Unrealized Gains	1,307	219
Gross Unrealized Losses	(375)	(137)
Investment securities available for sale, at fair value	80,851	70,325
U.S. Government agency and sponsored enterprise residential MBS
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2,389,450	2,018,853
Gross Unrealized Gains	19,148	9,835
Gross Unrealized Losses	(3,028)	(6,513)
Investment securities available for sale, at fair value	2,405,570	2,022,175
U.S. Government agency and sponsored enterprise commercial MBS
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	531,724	366,787
Gross Unrealized Gains	9,297	4,920
Gross Unrealized Losses	(1,667)	(731)
Investment securities available for sale, at fair value	539,354	370,976
Private label residential mortgage-backed securities and CMOs
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	982,890	1,001,337
Gross Unrealized Gains	16,274	11,851
Gross Unrealized Losses	(561)	(1,011)
Investment securities available for sale, at fair value	998,603	1,012,177
Private label commercial mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2,514,271	1,719,228
Gross Unrealized Gains	24,931	6,650
Gross Unrealized Losses	(12,848)	(1,194)
Investment securities available for sale, at fair value	2,526,354	1,724,684
Financing Receivable, Allowance for Credit Loss	400
Single family rental real estate-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	636,069	467,459
Gross Unrealized Gains	14,877	4,016
Gross Unrealized Losses	(58)	(1,450)
Investment securities available for sale, at fair value	650,888	470,025
Collateralized loan obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,148,724	1,204,905
Gross Unrealized Gains	285	322
Gross Unrealized Losses	(8,735)	(7,861)
Investment securities available for sale, at fair value	1,140,274	1,197,366
Non-mortgage asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	246,597	194,171
Gross Unrealized Gains	6,898	1,780
Gross Unrealized Losses	(234)	(1,047)
Investment securities available for sale, at fair value	253,261	194,904
State and municipal obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	213,743	257,528
Gross Unrealized Gains	21,966	15,774
Gross Unrealized Losses	0	0
Investment securities available for sale, at fair value	235,709	273,302
SBA securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	233,387	359,808
Gross Unrealized Gains	2,093	4,587
Gross Unrealized Losses	(3,935)	(1,664)
Investment securities available for sale, at fair value	231,545	362,731
Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Investment securities held to maturity	10,000	10,000
Equity Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Equity Securities, FV-NI	$ 104,274	$ 60,572

Investment Securities (Schedule of Maturities of Investment Securities Available for Sale) (Details) $ in Thousands	Dec. 31, 2020 USD ($)
Investments, Debt and Equity Securities [Abstract]
Due in one year or less, Amortized Cost	$ 913,305
Due after one year through five years, Amortized Cost	5,415,656
Due after five years through ten years, Amortized Cost	2,137,170
Due after ten years, Amortized Cost	510,643
Amortized Cost	8,976,774
Due in one year or less, Fair Value	922,531
Due after one year through five years, Fair Value	5,441,360
Due after five years through ten years, Fair Value	2,180,434
Due after ten years, Fair Value	518,084
Fair Value	$ 9,062,409

Investment Securities (Schedule of Gains and Losses on the Sale and Exchange of Investment Securities Available for Sale) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Proceeds from sale of investment securities available for sale	$ 1,503,498	$ 2,975,259	$ 1,030,810
Gross realized gains:	14,441	21,961	8,617
Gross realized losses:	(440)	(3,424)	(2,514)
Net realized gain	14,001	18,537	6,103
Unrealized Gain (Loss) on Securities	3,766	2,637	(2,944)
Gain on investment securities, net	$ 17,767	$ 21,174	$ 3,159

Investment Securities (Narrative) (Details) $ in Thousands	12 Months Ended
Investment Securities (Narrative) (Details) $ in Thousands	Dec. 31, 2020 USD ($) security	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Debt Securities, Available-for-sale [Line Items]
Number of held-to-maturity securities	1
Interest Receivable \| $	$ 99,000	$ 83,000
Debt Securities, Available-for-sale, Restricted \| $	$ 4,100,000	2,400,000
Number of securities in unrealized loss positions (in Securities)	148
Number of securities which impairment considered insignificant (in Securities)	24
Available-for-sale securities, gross unrealized loss, considered insignificant \| $	$ 300
Financing Receivable, Allowance for Credit Loss \| $	$ 257,323	108,671	$ 109,931	$ 144,795
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Number of securities in unrealized loss positions (in Securities)	1
U.S. Government agency and sponsored enterprise residential MBS
Debt Securities, Available-for-sale [Line Items]
Number of securities in unrealized loss positions (in Securities)	20
U.S. Government agency and sponsored enterprise commercial MBS
Debt Securities, Available-for-sale [Line Items]
Number of securities in unrealized loss positions (in Securities)	7
Private label residential mortgage-backed securities and CMOs
Debt Securities, Available-for-sale [Line Items]
Number of securities in unrealized loss positions (in Securities)	3
Percentage of weighted average collateral loss	4.00%
Percentage of weighted average credit support	18.00%
Private label commercial mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Number of securities in unrealized loss positions (in Securities)	59
Percentage of weighted average collateral loss	12.00%
Percentage of weighted average credit support	42.00%
Financing Receivable, Allowance for Credit Loss \| $	$ 400
Debt Instrument, Credit Rating	85.00%
Percentage of securities rated AA	9.00%
Percentage of securities rated A	6.00%
Collateralized loan obligations
Debt Securities, Available-for-sale [Line Items]
Number of securities in unrealized loss positions (in Securities)	21
Collateralized Debt Obligations [Member]
Debt Securities, Available-for-sale [Line Items]
Percentage of weighted average collateral loss	23.00%
Percentage of weighted average credit support	42.00%
Debt Instrument, Credit Rating	81.00%
Percentage of securities rated AA	15.00%
Percentage of securities rated A	4.00%
Non-mortgage asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Number of securities in unrealized loss positions (in Securities)	2
Percentage of weighted average collateral loss	9.00%
Percentage of weighted average credit support	22.00%
SBA securities
Debt Securities, Available-for-sale [Line Items]
Number of securities in unrealized loss positions (in Securities)	11
Debt Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Interest Receivable \| $	$ 17,000	$ 28,000

Loans and Allowance for Credit Losses (Schedule of Loans) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	$ 23,866,042,000	$ 23,154,988,000
Percent of total loans (in Percent)	100.00%	100.00%
Financing Receivable, Deferred Income	$ 39,000,000	$ 50,000,000
Payments to Acquire Loans Held-for-investment	3,157,659,000	2,197,484,000	$ 1,308,772,000
Pledged Financial Instruments, Not Separately Reported, Loans Receivable, for Federal Home Loan Bank Debt	9,600,000,000	10,200,000,000
Interest Receivable	99,000,000	83,000,000
Financing receivable, nonaccrual, interest income	3,500,000
Loans and Leases Receivable, Net of Deferred Income	23,866,042,000	23,154,988,000
Loans and Leases Receivable, Allowance	257,323,000	108,671,000
Loans and Leases Receivable, Net Amount	23,608,719,000	23,046,317,000
1-4 single family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	$ 4,922,836,000	$ 4,953,936,000
Percent of total loans (in Percent)	20.60%	21.40%
Payments to Acquire Loans Held-for-investment	$ 3,200,000,000	$ 2,200,000,000
Loans and Leases Receivable, Net of Deferred Income	4,922,836,000	4,953,936,000
US Government Agency Insured Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	$ 1,419,074,000	$ 698,644,000
Percent of total loans (in Percent)	5.90%	3.00%
Payments to Acquire Loans Held-for-investment	$ 1,400,000,000	$ 844,000,000
Loans and Leases Receivable, Net of Deferred Income	$ 1,419,074,000	$ 698,644,000
Consumer loan and home equity line of credit [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percent of total loans (in Percent)	0.10%	0.10%
Loans and Leases Receivable, Net of Deferred Income	$ 6,312,000	$ 8,539,000
Residential and Other Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Percent of total loans (in Percent)	26.60%	24.50%
Loans and Leases Receivable, Net of Deferred Income	$ 6,348,222,000	$ 5,661,119,000
Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	$ 1,639,201,000	$ 2,217,705,000
Percent of total loans (in Percent)	6.90%	9.60%
Loans and Leases Receivable, Net of Deferred Income	$ 1,639,201,000	$ 2,217,705,000
Commercial real estate, Non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	$ 4,963,273,000	$ 5,030,904,000
Percent of total loans (in Percent)	20.80%	21.70%
Loans and Leases Receivable, Net of Deferred Income	$ 4,963,273,000	$ 5,030,904,000
Construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	$ 293,307,000	$ 243,925,000
Percent of total loans (in Percent)	1.20%	1.10%
Loans and Leases Receivable, Net of Deferred Income	$ 293,307,000	$ 243,925,000
Commercial real estate, Owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	$ 2,000,770,000	$ 2,062,808,000
Percent of total loans (in Percent)	8.40%	8.90%
Loans and Leases Receivable, Net of Deferred Income	$ 2,000,770,000	$ 2,062,808,000
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	$ 4,447,383,000	$ 4,655,349,000
Percent of total loans (in Percent)	18.60%	20.10%
Loans and Leases Receivable, Net of Deferred Income	$ 4,447,383,000	$ 4,655,349,000
Payment Protection Plan [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	$ 781,811,000
Percent of total loans (in Percent)	3.30%
Pinnacle Public Finance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	$ 1,107,386,000	$ 1,202,430,000
Percent of total loans (in Percent)	4.60%	5.20%
Loans and Leases Receivable, Net of Deferred Income	$ 1,107,386,000	$ 1,202,430,000
Bridge - franchise finance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	$ 549,733,000	$ 627,482,000
Percent of total loans (in Percent)	2.30%	2.60%
Loans and Leases Receivable, Net of Deferred Income	$ 549,733,000	$ 627,482,000
Bridge - equipment finance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	$ 475,548,000	$ 684,794,000
Percent of total loans (in Percent)	2.00%	3.00%
Loans and Leases Receivable, Net of Deferred Income	$ 475,548,000	$ 684,794,000
Mortgage warehouse lending [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	$ 1,259,408,000	$ 768,472,000
Percent of total loans (in Percent)	5.30%	3.30%
Loans and Leases Receivable, Net of Deferred Income	$ 1,259,408,000	$ 768,472,000
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	$ 17,517,820,000	$ 17,493,869,000
Percent of total loans (in Percent)	73.40%	75.50%
Loans and Leases Receivable, Net of Deferred Income	$ 17,517,820,000	$ 17,493,869,000
Paycheck Protection Plan
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 781,811,000
Financial Asset Acquired with Credit Deterioration [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income		166,760,000
Financial Asset Acquired with Credit Deterioration [Member] \| Residential and Other Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income		149,580,000
Financial Asset Acquired with Credit Deterioration [Member] \| Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income		$ 17,180,000

Loans and Allowance for Credit Losses (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Jan. 01, 2020	Dec. 31, 2017
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	$ 23,866,042,000	$ 23,154,988,000
Financing Receivable, Purchased with Credit Deterioration, Discount (Premium)	(115,000,000)
Purchases of loans	3,157,659,000	2,197,484,000	$ 1,308,772,000
Recorded investment of loans pledged as security for FHLB advances and Federal Reserve discount window borrowings	9,600,000,000	10,200,000,000
Financing Receivable, 90 Days or More Past Due, Still Accruing	562,000,000	531,000,000
Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans	10,900,000	7,500,000
Loans and Leases Receivable, Net of Deferred Income	23,866,042,000	23,154,988,000
Financing Receivable, Allowance for Credit Loss	(257,323,000)	(108,671,000)	(109,931,000)		$ (144,795,000)
Small business finance [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, 90 Days or More Past Due, Still Accruing	40,300,000	36,300,000
Financing Receivable, Nonaccrual	51,300,000	45,700,000
Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	118,000,000
Financing Receivable, Allowance for Credit Loss	(2,800,000)			$ (1,700,000)
1-4 single family residential
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	4,922,836,000	4,953,936,000
Purchases of loans	3,200,000,000	2,200,000,000
Loans and Leases Receivable, Net of Deferred Income	4,922,836,000	4,953,936,000
Residential Portfolio Segment [Member]
Financing Receivable Investment Past Due [Line Items]
Loans and Leases Receivable, Net of Deferred Income	6,348,222,000	5,661,119,000
Mortgage Loans in Process of Foreclosure, Amount	217,000,000	257,000,000
Financing Receivable, Allowance for Credit Loss	(18,719,000)	(11,154,000)	(10,788,000)		(10,720,000)
US Government Agency Insured Loans [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	1,419,074,000	698,644,000
Purchases of loans	1,400,000,000	844,000,000
Loans and Leases Receivable, Net of Deferred Income	1,419,074,000	698,644,000
Mortgage Loans in Process of Foreclosure, Amount	209,000,000	248,000,000
Commercial Portfolio Segment [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	17,517,820,000	17,493,869,000
Loans and Leases Receivable, Net of Deferred Income	17,517,820,000	17,493,869,000
Financing Receivable, Allowance for Credit Loss	(238,604,000)	$ (97,517,000)	$ (99,143,000)		$ (134,075,000)
Commercial Portfolio Segment [Member] \| Minimum
Financing Receivable Investment Past Due [Line Items]
Financing receivable credit quality indicator, the value at which relationships are reevaluated at least annually	1,000,000
Commercial Portfolio Segment [Member] \| Maximum [Member]
Financing Receivable Investment Past Due [Line Items]
Financing receivable credit quality indicator, the value at which relationships are reevaluated at least annually	$ 3,000,000

Loans and Allowance for Credit Losses (ALLL Rollforward) (Details) - USD ($) $ in Thousands		3 Months Ended								12 Months Ended
	Jan. 01, 2020	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan and lease losses, beginning of period	$ 108,671				$ 108,671				$ 109,931	$ 108,671	$ 109,931	$ 144,795
Provision for credit losses		$ 1,643	$ (29,232)	$ (25,414)	(125,428)	$ 469	$ (1,839)	$ 2,747	(10,281)	(178,431)	(8,904)	(25,925)
Accounts Receivable, Allowance for Credit Loss, Writeoff										69,602
Charge-offs											(17,541)	(67,084)
Financing Receivable, Allowance for Credit Loss, Recovery										8,610
Recoveries											7,377	6,295
Allowance for loan and lease losses, end of period		257,323				108,671				257,323	108,671	109,931
Provision for Other Credit Losses										364
Financing Receivable, Allowance for Credit Loss, Writeoff										14,700
sales on commercial loans		49,600								49,600
Residential and Other Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan and lease losses, beginning of period	11,154				11,154				10,788	11,154	10,788	10,720
Accounts Receivable, Allowance for Credit Loss, Writeoff										31
Charge-offs											0	(1,465)
Financing Receivable, Allowance for Credit Loss, Recovery										54
Recoveries											212	501
Allowance for loan and lease losses, end of period		18,719				11,154				18,719	11,154	10,788
Commercial
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan and lease losses, beginning of period	97,517				$ 97,517				99,143	97,517	99,143	134,075
Accounts Receivable, Allowance for Credit Loss, Writeoff										69,571
Charge-offs											(17,541)	(65,619)
Financing Receivable, Allowance for Credit Loss, Recovery										8,556
Recoveries											7,165	5,794
Allowance for loan and lease losses, end of period		$ 238,604				$ 97,517				238,604	97,517	99,143
Taxi medallion [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Charge-offs												(39,700)
Accounting Standards Update 2016-13 [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan and lease losses, beginning of period									109,931		109,931	144,795
Financing Receivable, Change in Method, Credit Loss Expense (Reversal)	27,305
Allowance for loan and lease losses, end of period	135,976											109,931
Accounting Standards Update 2016-13 [Member] \| Residential and Other Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan and lease losses, beginning of period									10,788		10,788	10,720
Financing Receivable, Change in Method, Credit Loss Expense (Reversal)	8,098
Allowance for loan and lease losses, end of period	19,252											10,788
Accounting Standards Update 2016-13 [Member] \| Commercial
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan and lease losses, beginning of period									$ 99,143		99,143	134,075
Financing Receivable, Change in Method, Credit Loss Expense (Reversal)	19,207
Allowance for loan and lease losses, end of period	$ 116,724											99,143
Funded Loans [Member]
Allowance for Loan and Lease Losses [Roll Forward]
Provision for credit losses										(182,339)	(8,904)	(25,925)
Funded Loans [Member] \| Residential and Other Consumer
Allowance for Loan and Lease Losses [Roll Forward]
Provision for credit losses										(556)	(154)	(1,032)
Funded Loans [Member] \| Commercial
Allowance for Loan and Lease Losses [Roll Forward]
Provision for credit losses										$ (182,895)	$ (8,750)	$ (24,893)

Loans and Allowance for Credit Losses (Schedule of Credit Exposure for Loans Based on Original LTV and FICO Score) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	$ 23,866,042	$ 23,154,988
1-4 single family residential
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Current Fiscal Year	1,110,120	820,613
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	652,686	615,021
Financing Receivable, Originated Two Years before Latest Fiscal Year	379,599	835,512
Financing Receivable, Originated Three Years before Latest Fiscal Year	612,357	792,223
Financing Receivable, Originated Four Years before Latest Fiscal Year	747,514	644,937
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,420,560	1,245,630
Financing Receivable, before Allowance for Credit Loss and Fee	4,922,836	4,953,936
FICO, 760 or greater \| 1-4 single family residential
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Current Fiscal Year	843,199	470,057
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	435,582	340,716
Financing Receivable, Originated Two Years before Latest Fiscal Year	225,292	534,017
Financing Receivable, Originated Three Years before Latest Fiscal Year	451,304	533,804
Financing Receivable, Originated Four Years before Latest Fiscal Year	549,119	430,706
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	956,254	763,807
Financing Receivable, before Allowance for Credit Loss and Fee	3,460,750	3,073,107
FICO, 720 to 759 \| 1-4 single family residential
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Current Fiscal Year	223,831	242,806
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	128,875	185,939
Financing Receivable, Originated Two Years before Latest Fiscal Year	84,602	200,623
Financing Receivable, Originated Three Years before Latest Fiscal Year	102,859	178,139
Financing Receivable, Originated Four Years before Latest Fiscal Year	130,592	141,748
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	256,703	307,195
Financing Receivable, before Allowance for Credit Loss and Fee	927,462	1,256,450
FICO, 719 or less \| 1-4 single family residential
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Current Fiscal Year	43,090	107,750
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	88,229	88,366
Financing Receivable, Originated Two Years before Latest Fiscal Year	69,705	100,872
Financing Receivable, Originated Three Years before Latest Fiscal Year	58,194	80,280
Financing Receivable, Originated Four Years before Latest Fiscal Year	67,803	72,483
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	207,603	174,628
Financing Receivable, before Allowance for Credit Loss and Fee	534,624	624,379
Less than 61% [Member] \| 1-4 single family residential
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Current Fiscal Year	395,977	171,069
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	143,273	134,978
Financing Receivable, Originated Two Years before Latest Fiscal Year	82,199	183,807
Financing Receivable, Originated Three Years before Latest Fiscal Year	174,223	228,868
Financing Receivable, Originated Four Years before Latest Fiscal Year	286,092	197,039
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	487,487	372,221
Financing Receivable, before Allowance for Credit Loss and Fee	1,569,251	1,287,982
61% - 70% [Member] \| 1-4 single family residential
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Current Fiscal Year	298,941	195,572
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	151,633	128,766
Financing Receivable, Originated Two Years before Latest Fiscal Year	92,928	152,502
Financing Receivable, Originated Three Years before Latest Fiscal Year	119,381	188,856
Financing Receivable, Originated Four Years before Latest Fiscal Year	184,119	154,307
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	341,159	316,031
Financing Receivable, before Allowance for Credit Loss and Fee	1,188,161	1,136,034
71% - 80% [Member] \| 1-4 single family residential
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Current Fiscal Year	413,003	442,311
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	344,998	313,779
Financing Receivable, Originated Two Years before Latest Fiscal Year	181,852	404,743
Financing Receivable, Originated Three Years before Latest Fiscal Year	271,605	338,000
Financing Receivable, Originated Four Years before Latest Fiscal Year	258,931	283,202
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	565,781	531,377
Financing Receivable, before Allowance for Credit Loss and Fee	2,036,170	2,313,412
More than 81% [Member] \| 1-4 single family residential
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Current Fiscal Year	2,199	11,661
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	12,782	37,498
Financing Receivable, Originated Two Years before Latest Fiscal Year	22,620	94,460
Financing Receivable, Originated Three Years before Latest Fiscal Year	47,148	36,499
Financing Receivable, Originated Four Years before Latest Fiscal Year	18,372	10,389
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	26,133	26,001
Financing Receivable, before Allowance for Credit Loss and Fee	129,254	216,508
Financial Asset, Current [Member] \| 1-4 single family residential
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Current Fiscal Year	1,092,183	804,913
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	645,993	609,814
Financing Receivable, Originated Two Years before Latest Fiscal Year	374,838	830,710
Financing Receivable, Originated Three Years before Latest Fiscal Year	611,377	783,318
Financing Receivable, Originated Four Years before Latest Fiscal Year	740,749	633,833
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	1,392,192	1,225,030
Financing Receivable, before Allowance for Credit Loss and Fee	4,857,332	4,887,618
30 - 59 Days Past Due \| 1-4 single family residential
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Current Fiscal Year	17,826	13,915
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	5,741	3,003
Financing Receivable, Originated Two Years before Latest Fiscal Year	2,564	3,751
Financing Receivable, Originated Three Years before Latest Fiscal Year	927	8,419
Financing Receivable, Originated Four Years before Latest Fiscal Year	2,913	4,308
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	18,880	12,238
Financing Receivable, before Allowance for Credit Loss and Fee	48,851	45,634
60 - 89 Days Past Due \| 1-4 single family residential
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Current Fiscal Year	111	1,785
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	145	442
Financing Receivable, Originated Two Years before Latest Fiscal Year	435	137
Financing Receivable, Originated Three Years before Latest Fiscal Year	0	486
Financing Receivable, Originated Four Years before Latest Fiscal Year	2,825	1,766
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	3,973	4,962
Financing Receivable, before Allowance for Credit Loss and Fee	7,489	9,578
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] \| 1-4 single family residential
Financing Receivable, Credit Quality Indicator [Line Items]
Financing Receivable, Originated in Current Fiscal Year	0	0
Financing Receivable, Originated in Fiscal Year before Latest Fiscal Year	807	1,762
Financing Receivable, Originated Two Years before Latest Fiscal Year	1,762	914
Financing Receivable, Originated Three Years before Latest Fiscal Year	53	0
Financing Receivable, Originated Four Years before Latest Fiscal Year	1,027	5,030
Financing Receivable, Originated Five or More Years before Latest Fiscal Year	5,515	3,400
Financing Receivable, before Allowance for Credit Loss and Fee	$ 9,164	$ 11,106

Loans and Allowance for Credit Losses (Schedule of Recorded Investment in Loans on Non-Accrual Status) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Impaired, Interest Lost on Nonaccrual Loans	$ 10,900	$ 7,500

Loans and Allowance for Credit Losses (Impaired Financing Receivables) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2020
Financing Receivable Impaired [Line Items]
Recorded Investment, With no specific allowance recorded			$ 84,195
Recorded Investment, Total	$ 244,905
UPB, Total	245,029
Average recorded investment in impaired loans	152,630	$ 176,341
Financing Receivable, before Allowance for Credit Loss			156,097
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest	204,788		244,453
1-4 single family residential
Financing Receivable Impaired [Line Items]
Recorded Investment, With a specific allowance recorded	2,697
Recorded Investment, Total	992
UPB, With no specific allowance recorded	989
UPB, With a specific allowance recorded	2,652
Average recorded investment in impaired loans	4,525	5,227
US Government Agency Insured Loans [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment, Total	53,428
UPB, With no specific allowance recorded	53,350
Average recorded investment in impaired loans	18,574	1,426
Residential and Other Consumer
Financing Receivable Impaired [Line Items]
Recorded Investment, With no specific allowance recorded			1,755
Recorded Investment, Total	57,117
UPB, Total	56,991
Average recorded investment in impaired loans	23,099	6,653
Financing Receivable, before Allowance for Credit Loss			2,528
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest	18,894		28,828
Multi-family
Financing Receivable Impaired [Line Items]
Recorded Investment, With no specific allowance recorded			24,090
Recorded Investment, Total	6,138
UPB, With no specific allowance recorded	6,169
Average recorded investment in impaired loans	20,972	25,679
Financing Receivable, before Allowance for Credit Loss			24,090
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest	6,138		24,090
Commercial real estate, Non-owner occupied
Financing Receivable Impaired [Line Items]
Recorded Investment, With no specific allowance recorded			32,843
Recorded Investment, With a specific allowance recorded	2,522
Recorded Investment, Total	38,345
UPB, With no specific allowance recorded	38,450
UPB, With a specific allowance recorded	2,509
Average recorded investment in impaired loans	25,814	14,106
Financing Receivable, before Allowance for Credit Loss			52,813
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest	40,097		64,017
Construction and land
Financing Receivable Impaired [Line Items]
Recorded Investment, With no specific allowance recorded			4,408
Recorded Investment, Total	3,191
UPB, With no specific allowance recorded	3,155
Average recorded investment in impaired loans	7,621	6,551
Financing Receivable, before Allowance for Credit Loss			4,754
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest	3,191		4,754
Commercial real estate, Owner occupied
Financing Receivable Impaired [Line Items]
Recorded Investment, With no specific allowance recorded			2,110
Recorded Investment, Total	17,419
UPB, With no specific allowance recorded	17,488
Average recorded investment in impaired loans	14,250	16,207
Financing Receivable, before Allowance for Credit Loss			14,814
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest	27,141		23,152
Commercial and industrial
Financing Receivable Impaired [Line Items]
Recorded Investment, With no specific allowance recorded			9,235
Recorded Investment, With a specific allowance recorded	63,531
Recorded Investment, Total	10,585
UPB, With no specific allowance recorded	10,574
UPB, With a specific allowance recorded	63,709
Average recorded investment in impaired loans	36,698	97,388
Financing Receivable, before Allowance for Credit Loss			28,112
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest	74,757		54,584
Bridge - franchise finance [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment, With no specific allowance recorded			9,754
Recorded Investment, With a specific allowance recorded	21,011
Recorded Investment, Total	4,115
UPB, With no specific allowance recorded	4,117
UPB, With a specific allowance recorded	21,050
Average recorded investment in impaired loans	10,195	1,986
Financing Receivable, before Allowance for Credit Loss			28,986
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest	13,631		45,028
Bridge - equipment finance [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment, With no specific allowance recorded			0
Recorded Investment, With a specific allowance recorded	14,124
Recorded Investment, Total	6,807
UPB, With no specific allowance recorded	6,793
UPB, With a specific allowance recorded	14,024
Average recorded investment in impaired loans	13,981	7,771
Loans and Leases Receivable, Nonperforming, Nonaccrual of Interest	20,939		0
Commercial Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Recorded Investment, Total	187,788
UPB, Total	188,038
Average recorded investment in impaired loans	129,531	$ 169,688
Financing Receivable, before Allowance for Credit Loss			153,569
Residential Real Estate [Member] \| Residential and Other Consumer
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss			2,513
Commercial Real Estate [Member] \| Multi-family
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss			24,090
Commercial Real Estate [Member] \| Commercial real estate, Non-owner occupied
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss			52,435
Commercial Real Estate [Member] \| Construction and land
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss			4,754
Commercial Real Estate [Member] \| Commercial real estate, Owner occupied
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss			14,777
Commercial Real Estate [Member] \| Commercial and industrial
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss			18,093
Commercial Real Estate [Member] \| Commercial Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss			126,981
Equipment [Member] \| Bridge - franchise finance [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss			12,832
Secured Debt [Member]
Financing Receivable Impaired [Line Items]
Financing Receivable, before Allowance for Credit Loss			$ 129,494
Specific Valuation Allowance [Member]
Financing Receivable Impaired [Line Items]
Related Specific Allowance, Impaired loans	20,490
Specific Valuation Allowance [Member] \| 1-4 single family residential
Financing Receivable Impaired [Line Items]
Related Specific Allowance, Impaired loans	9
Specific Valuation Allowance [Member] \| Residential and Other Consumer
Financing Receivable Impaired [Line Items]
Related Specific Allowance, Impaired loans	9
Specific Valuation Allowance [Member] \| Commercial real estate, Owner occupied
Financing Receivable Impaired [Line Items]
Related Specific Allowance, Impaired loans	401
Specific Valuation Allowance [Member] \| Commercial and industrial
Financing Receivable Impaired [Line Items]
Related Specific Allowance, Impaired loans	13,992
Specific Valuation Allowance [Member] \| Bridge - franchise finance [Member]
Financing Receivable Impaired [Line Items]
Related Specific Allowance, Impaired loans	2,953
Specific Valuation Allowance [Member] \| Bridge - equipment finance [Member]
Financing Receivable Impaired [Line Items]
Related Specific Allowance, Impaired loans	3,135
Specific Valuation Allowance [Member] \| Commercial Portfolio Segment [Member]
Financing Receivable Impaired [Line Items]
Related Specific Allowance, Impaired loans	$ 20,481

Loans and Allowance for Credit Losses Loans and Allowance for Credit Losses (Schedule of Troubled Debt Restructurings) (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020 USD ($)	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts	211	339	47
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 51,387	$ 99,510	$ 20,116
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts	95	115	21
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	$ 31,454	$ 27,002	$ 5,655
1-4 single family residential
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts	1	2	10
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 201	$ 557	$ 3,669
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts	0	0	3
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	$ 0	$ 0	$ 929
US Government Agency Insured Loans [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts	201	324	26
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 34,100	$ 51,022	$ 2,793
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts	86	112	15
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	$ 14,368	$ 17,421	$ 1,560
Commercial real estate, Non-owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts	1	1	3
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 4,122	$ 11,496	$ 5,932
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts	1	0	1
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	$ 4,122	$ 0	$ 2,949
Commercial real estate, Owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts		1	2
Financing Receivable, Troubled Debt Restructuring, Postmodification		$ 908	$ 1,076
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts		1	0
Financing Receivable, Troubled Debt Restructuring, Subsequent Default		$ 908	$ 0
Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts		7	6
Financing Receivable, Troubled Debt Restructuring, Postmodification		$ 20,239	$ 6,646
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts		2	2
Financing Receivable, Troubled Debt Restructuring, Subsequent Default		$ 8,673	$ 217
Bridge - franchise finance [Member]
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing Receivable, Modifications, Number of Contracts	8	4
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 12,964	$ 15,288
Financing Receivable, Troubled Debt Restructuring, Subsequent Default, Number of Contracts	8	0
Financing Receivable, Troubled Debt Restructuring, Subsequent Default	$ 12,964	$ 0

Loans and Allowance for Credit Losses Loans and Allowance for Credit Losses (Schedule of Loan Concentrations by States) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 23,866,042	$ 23,154,988
1-4 single family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 4,922,836	$ 4,953,936
Percent of loans by state	100.00%	100.00%
Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 6,895,781	$ 7,492,534
Percent of loans by state	100.00%	100.00%
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 4,447,383	$ 4,655,349
Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 10,622,039	$ 10,001,335
Percent of loans by state	100.00%	100.00%
California [Member] \| 1-4 single family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 1,541,779	$ 1,280,243
Percent of loans by state	31.30%	25.80%
California [Member] \| Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 1,003	$ 249
Percent of loans by state	0.00%	0.00%
California [Member] \| Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 775,989	$ 719,465
Percent of loans by state	7.30%	7.20%
New York [Member] \| 1-4 single family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 1,084,143	$ 1,057,926
Percent of loans by state	22.00%	21.40%
FLORIDA \| 1-4 single family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 518,877	$ 597,359
Percent of loans by state	10.50%	12.10%
FLORIDA \| Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 3,659,310	$ 3,476,657
Percent of loans by state	53.10%	46.40%
FLORIDA \| Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 4,044,377	$ 4,051,924
Percent of loans by state	38.10%	40.50%
New York Tri-State [Member] \| Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 2,652,980	$ 3,423,564
Percent of loans by state	38.50%	45.70%
New York Tri-State [Member] \| Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 2,570,974	$ 2,110,915
Percent of loans by state	24.20%	21.10%
Virginia [Member] \| 1-4 single family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 196,641	$ 189,869
Percent of loans by state	4.00%	3.80%
Washington DC \| 1-4 single family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 166,025	$ 187,049
Percent of loans by state	3.40%	3.80%
Others [Member] \| 1-4 single family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 1,415,371	$ 1,641,490
Percent of loans by state	28.80%	33.10%
Others [Member] \| Commercial Real Estate Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 582,488	$ 592,064
Percent of loans by state	8.40%	7.90%
Others [Member] \| Commercial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans and Leases Receivable, Net of Deferred Income	$ 3,230,699	$ 3,119,031
Percent of loans by state	30.40%	31.20%

Loans and Allowance for Credit Losses Loans and Allowance for Credit Losses (Balance of ALLL and Related Loans) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Allowance for Credit Loss [Line Items]
Provision for credit losses	$ 1,643	$ (29,232)	$ (25,414)	$ (125,428)	$ 469	$ (1,839)	$ 2,747	$ (10,281)	$ (178,431)	$ (8,904)	$ (25,925)
Financing Receivable, Allowance for Credit Loss	257,323				108,671				257,323	108,671	109,931	$ 144,795
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment					20,490					20,490
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment					88,181					88,181
Financing Receivable, Individually Evaluated for Impairment					244,905					244,905
Financing Receivable, Collectively Evaluated for Impairment					22,743,323					22,743,323
Loans and Leases Receivable, Net of Deferred Income	23,866,042				23,154,988				23,866,042	23,154,988
US Government Agency Insured Loans [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans and Leases Receivable, Net of Deferred Income	1,419,074				698,644				1,419,074	698,644
Residential Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	18,719				11,154				18,719	11,154	10,788	10,720
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment					9					9
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment					11,145					11,145
Financing Receivable, Individually Evaluated for Impairment					57,117					57,117
Financing Receivable, Collectively Evaluated for Impairment					5,454,422					5,454,422
Loans and Leases Receivable, Net of Deferred Income	6,348,222				5,661,119				6,348,222	5,661,119
Commercial Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss	238,604				97,517				238,604	97,517	99,143	$ 134,075
Financing Receivable, Allowance for Credit Losses, Individually Evaluated for Impairment					20,481					20,481
Financing Receivable, Allowance for Credit Losses, Collectively Evaluated for Impairment					77,036					77,036
Financing Receivable, Individually Evaluated for Impairment					187,788					187,788
Financing Receivable, Collectively Evaluated for Impairment					17,288,901					17,288,901
Loans and Leases Receivable, Net of Deferred Income	$ 17,517,820				17,493,869				17,517,820	17,493,869
Financial Asset Acquired with Credit Deterioration [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss					0					0
Loans and Leases Receivable, Net of Deferred Income					166,760					166,760
Financial Asset Acquired with Credit Deterioration [Member] \| Residential Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss					0					0
Loans and Leases Receivable, Net of Deferred Income					149,580					149,580
Financial Asset Acquired with Credit Deterioration [Member] \| Commercial Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Financing Receivable, Allowance for Credit Loss					0					0
Loans and Leases Receivable, Net of Deferred Income					$ 17,180					17,180
Funded Loans [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Provision for credit losses									(182,339)	(8,904)	(25,925)
Funded Loans [Member] \| Residential Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Provision for credit losses									(556)	(154)	(1,032)
Funded Loans [Member] \| Commercial Portfolio Segment [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Provision for credit losses									(182,895)	$ (8,750)	$ (24,893)
Off Balance Sheet [Member]
Financing Receivable, Allowance for Credit Loss [Line Items]
Provision for credit losses									(5,572)
Accrued Interest Receivable
Financing Receivable, Allowance for Credit Loss [Line Items]
Provision for credit losses									$ (1,300)

Loans and Allowance for Credit Losses Loans and Allowance for Credit Losses (Schedule of Average Recorded Investment in Impaired Loans) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment in impaired loans	$ 152,630	$ 176,341
1-4 single family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment in impaired loans	4,525	5,227
US Government Agency Insured Loans [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment in impaired loans	18,574	1,426
Residential and Other Consumer
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment in impaired loans	23,099	6,653
Multi-family
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment in impaired loans	20,972	25,679
Commercial real estate, Non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment in impaired loans	25,814	14,106
Construction and land
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment in impaired loans	7,621	6,551
Commercial real estate, Owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment in impaired loans	14,250	16,207
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment in impaired loans	36,698	97,388
Bridge - franchise finance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment in impaired loans	10,195	1,986
Bridge - equipment finance [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment in impaired loans	13,981	7,771
Commercial Portfolio Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Average recorded investment in impaired loans	$ 129,531	$ 169,688

Leases Schedule of ROU Assets and Lease Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Schedule of ROU Assets and Lease Liabilities [Abstract]
Operating Lease, Right-of-Use Asset	$ 84,874	$ 92,553
Finance Lease, Right-of-Use Asset	29,119	31,587
Total Right of Use Asset	113,993	124,140
Finance Lease, Liability	32,563	34,248
Total Lease Liabilities	126,241	136,512
Other Liabilities
Schedule of ROU Assets and Lease Liabilities [Abstract]
Operating Lease, Liability	93,678	102,264
Operating Lease, Liability	$ 93,678	$ 102,264

Leases Schedule of Operating and Finance Lease Information (Details)	Dec. 31, 2020	Dec. 31, 2019
Operating and Finance Lease Information [Abstract]
Operating Lease, Weighted Average Remaining Lease Term	7 years 2 months 12 days	7 years 8 months 12 days
Finance Lease, Weighted Average Remaining Lease Term	12 years 8 months 12 days	13 years 7 months 6 days
Operating Lease, Weighted Average Discount Rate, Percent	3.10%	3.30%
Finance Lease, Weighted Average Discount Rate, Percent	2.90%	2.90%

Leases Schedule of Lease Costs (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Schedule of Lease Costs [Abstract]
Operating Lease, Cost	$ 20,112	$ 20,284
Operating Lease, Impairment Loss	108	1,278
Lease, Cost	20,220	21,562
Finance Lease, Right-of-Use Asset, Amortization	2,841	1,642
Finance Lease, Interest Expense	921	1,002
Total finance lease cost	3,762	2,644
Variable Lease, Cost	$ 4,761	$ 3,950

Leases Schedule of Leases - Cash Flow Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Finance Lease, Interest Payment on Liability	$ 921	$ 1,002
Operating Lease, Payments	20,589	20,795
Finance Lease, Principal Payments	2,980	2,529
Total cash paid for amounts included in the measurement of lease liabilities	24,490	24,326
Operating lease liabilities recognized from obtaining ROU assets	9,647	15,778
Finance lease liabilities recognized from obtaining ROU assets	373	27,415
Total lease liabilities recognized from obtaining ROU assets	10,020	147,257
Accounting Standards Update 2016-02 [Member]
Operating lease liabilities recognized from obtaining ROU assets	$ 0	$ 104,064

Leases Schedule of Future Minimum Lease Payments for Operating and Finance Leases (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Schedule of Future Minimum Lease Payments for Operating and Finance Leases [Abstract]
Operating Leases, Future Minimum Payments Due, Next Twelve Months	$ 19,949
Lessee, Operating Lease, Liability, Payments, Due Year Two	16,879
Lessee, Operating Lease, Liability, Payments, Due Year Three	14,431
Lessee, Operating Lease, Liability, Payments, Due Year Four	12,658
Lessee, Operating Lease, Liability, Payments, Due Year Five	9,966
Lessee, Operating Lease, Liability, Payments, Due after Year Five	31,072
Lessee, Operating Lease, Liability, Payments, Due	104,955
Lessee, Operating Lease, Liability, Undiscounted Excess Amount	(11,277)
Finance Lease, Liability, Payments, Due Next Twelve Months	3,213
Finance Lease, Liability, Payments, Due Year Two	2,650
Finance Lease, Liability, Payments, Due Year Three	2,666
Finance Lease, Liability, Payments, Due Year Four	2,701
Finance Lease, Liability, Payments, Due Year Five	2,774
Finance Lease, Liability, Payments, Due after Year Five	25,223
Finance Lease, Liability, Payment, Due	39,227
Finance Lease, Liability, Undiscounted Excess Amount	(6,664)
Finance Lease, Liability	32,563	$ 34,248
Total Lease Liability, Payments, Due Next Twelve Months	23,162
Total Lease Liability, Payments, Due Year Two	19,529
Total Lease Liability, Payments, Due Year Three	17,097
Total Lease Liability, Payments, Due Year Four	15,359
Total Lease Liability, Payments, Due Year Five	12,740
Total Lease Liability, Payments, Due After Year Five	56,295
Total Lease Liability, Payments Due	144,182
Total Lease Liability, Undiscounted Excess Amount	(17,941)
Total Lease Liabilities	126,241	136,512
Other Liabilities
Schedule of Future Minimum Lease Payments for Operating and Finance Leases [Abstract]
Operating Lease, Liability	93,678	102,264
Operating Lease, Liability	$ 93,678	$ 102,264

Leases Schedule of Direct or Sales Type Finance Leases (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Schedule of Direct or Sales Type Finance Leases [Abstract]
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received	$ 727,401	$ 804,103
Direct Financing Lease, Unguaranteed Residual Asset	5,599	8,471
Sales-type or direct financing lease, gross investment	733,000	812,574
Direct Financing Lease, Deferred Selling Profit	66,443	84,175
Capital Leases, Net Investment in Direct Financing Leases, Initial Direct Costs	3,306	4,453
Sales-type and Direct Financing Leases, Lease Receivable	$ 669,863	$ 732,852

Leases Schedule of future minimum lease payments under direct or sales type financing leases (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Leases [Abstract]
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Next Twelve Months	$ 192,486
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Two Years	140,263
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Three Years	109,887
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Four Years	66,254
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Five Years	49,463
Sales-type and Direct Financing Leases, Lease Receivable, Payments to be Received, Thereafter	169,048
Sales-type and Direct Financing Leases, Lease Receivable	$ 727,401	$ 804,103

Leases Schedule of Operating Lease Equipment (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Schedule of Operating Lease Equipment [Abstract]
Property Subject to or Available for Operating Lease, Gross	$ 844,953,000	$ 844,015,000
Property Subject to or Available for Operating Lease, Accumulated Depreciation	181,436,000	145,862,000
Operating lease equipment, net	663,517,000	698,153,000
Asset Impairment Charges	$ 700,000	$ 1,900,000

Leases Schedule of Future Minimum Rental Payment on Operating Leases (Details) $ in Thousands	Dec. 31, 2020 USD ($)
Schedule of Future Minimum Rental Payment on Operating Leases [Abstract]
Operating Leases, Future Minimum Payments Receivable, Current	$ 49,246
Operating Leases, Future Minimum Payments Receivable, in Two Years	44,525
Operating Leases, Future Minimum Payments Receivable, in Three Years	38,263
Operating Leases, Future Minimum Payments Receivable, in Four Years	33,856
Operating Leases, Future Minimum Payments Receivable, in Five Years	27,612
Operating Leases, Future Minimum Payments Receivable, Thereafter	54,845
Operating Leases, Future Minimum Payments Receivable	$ 248,347

Leases Operating and Direct Finance Lease Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Operating and Direct Finance Lease Income [Abstract]
Operating Lease, Lease Income	$ 59,112	$ 66,631
Direct Financing Lease, Lease Income	20,995	21,865
Lease Income	$ 80,107	$ 88,496

Deposits (Summary of Average Balances and Weighted Average Rates Paid on Deposits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Demand deposits:
Non-interest bearing, average balance	$ 5,760,309	$ 3,950,612	$ 3,389,191
Non-interest bearing, average rate (in Percent)	0.00%	0.00%	0.00%
Interest bearing, average balance	$ 2,582,951	$ 1,824,803	$ 1,627,828
Interest-bearing, average rate (in Percent)	0.75%	1.37%	1.13%
Savings and Money Market, average balance	$ 10,843,894	$ 10,922,819	$ 10,634,970
Weighted Average Rate Domestic Deposit Savings and Money Market	0.79%	1.81%	1.38%
Time, average balance	$ 6,617,939	$ 6,928,499	$ 6,617,006
Weighted Average Rate Domestic Deposit, Time Deposits	1.43%	2.34%	1.81%
Deposits, average balance	$ 25,805,093	$ 23,626,733	$ 22,268,995
Weighted Average Rate Domestic Deposits	0.77%	1.63%	1.28%

Deposits (Schedule of Maturities of Time Deposits) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deposits [Abstract]
Time Deposit Maturities, Next Twelve Months	$ 4,655,878
Time Deposit Maturities, Year Two	110,183
Time Deposit Maturities, Year Three	24,368
Time Deposit Maturities, Year Four	1,302
Time Deposit Maturities, after Year Five	15,468
Time Deposits	$ 4,807,199	$ 7,347,247

Deposits (Schedule of Interest Expense on Deposits) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Deposits [Abstract]
Interest Expense, Demand Deposit Accounts	$ 19,445	$ 25,054	$ 18,391
Interest Expense, Money Market and Savings Deposits	85,572	197,942	146,324
Interest Expense, Time Deposits	94,963	162,184	119,848
Interest Expense, Domestic Deposits	$ 199,980	$ 385,180	$ 284,563

Deposits (Narrative) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deposits [Abstract]
Time deposit accounts with balances of $250,000 or more	$ 1,100,000	$ 1,900,000
Public funds deposits included in deposits	2,500,000
Interest-bearing Domestic Deposit, Brokered	4,000,000
Carrying value of investment securities available for sale pledged as security for public funds deposits	$ 952,000

Federal Home Loan Bank Advances and Other Borrowings (Schedule of Outstanding FHLB Advances) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Maturing in Next Twelve Months - One month or less	$ 795,000
Maturing in Next Twelve Months - Over one month	2,226,000
Federal Home Loan Bank, Advances, Maturities Summary, Due in Year Four	100,000
Advances from Federal Home Loan Bank, Gross	3,121,000
Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease)	1,999	$ (499)
Advances from Federal Home Loan Banks, Total	$ 3,122,999	$ 4,480,501
Maturing in Next Twelve Months - One month or less, Weighted Average Rate (in Percent)	0.25%
Maturing in Next Twelve Months - Over one month, Weighted Average Rate (in Percent)	0.54%
Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate, One to Two Years from Balance Sheet Date	0.41%
Minimum
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Maturing in Next Twelve Months - One month or less, range of interest rates (in Percent)	0.24%
Maturing in Next Twelve Months - Over one month, range of interest rates (in Percent)	0.22%
Maturing in Year Two, range of interest rates (in Percent)	0.41%
Maximum
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Maturing in Next Twelve Months - One month or less, range of interest rates (in Percent)	0.25%
Maturing in Next Twelve Months - Over one month, range of interest rates (in Percent)	3.02%
Maturing in Year Two, range of interest rates (in Percent)	0.41%

Federal Home Loan Bank Advances, Notes and Other Borrowings Long-Term Debt (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Debt Disclosure [Abstract]
Long-term Debt	$ 689,932	$ 395,090
Finance leases	32,563	34,248
Long-term Debt and Lease Obligation	722,495	429,338
Schedule of Capitalization, Long-term Debt [Line Items]
Long-term Debt	689,932	395,090
Subordinated Debt [Member]
Debt Disclosure [Abstract]
Long-term Debt, Gross	300,000
Debt Instrument, Unamortized Discount	(5,894)
Long-term Debt	294,106
Schedule of Capitalization, Long-term Debt [Line Items]
Long-term Debt, Gross	300,000
Debt Instrument, Unamortized Discount	5,894
Long-term Debt	294,106
Senior Notes [Member]
Debt Disclosure [Abstract]
Long-term Debt, Gross	400,000	400,000
Debt Instrument, Unamortized Discount	(4,174)	(4,910)
Long-term Debt	395,826	395,090
Schedule of Capitalization, Long-term Debt [Line Items]
Long-term Debt, Gross	400,000	400,000
Debt Instrument, Unamortized Discount	4,174	4,910
Long-term Debt	$ 395,826	$ 395,090
Senior Notes [Member] \| Senior Notes 4.875% Maturing on November 17, 2025
Schedule of Capitalization, Long-term Debt [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	4.875%
Debt Instrument, Interest Rate, Stated Percentage	4.875%

Federal Home Loan Bank Advances and Other Borrowings (Narrative) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Jun. 11, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Pledged Financial Instruments, Not Separately Reported, Securities for Federal Home Loan Bank	$ 10,900,000
Federal Home Loan Bank, Advances, General Debt Obligations, Amount of Available, Unused Funds	4,900,000
Federal Reserve Bank Advances [Member]
Debt Instrument [Line Items]
Debt Instrument, Unused Borrowing Capacity, Amount	$ 2,100,000
Subordinated Debt [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage	5.39%
Long-term Debt, Gross	$ 300,000
Subordinated Debt [Member] \| Subordinated Debt 5.125% Maturing on June 11, 2030
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Stated Percentage	5.125%
Debt Instrument, Face Amount		$ 300,000
Federal Funds Lines of Credit [Member]
Debt Instrument [Line Items]
Line of Credit Facility, Current Borrowing Capacity	$ 50,000
Senior Notes [Member]
Debt Instrument [Line Items]
Debt Instrument, Interest Rate, Effective Percentage	5.12%
Long-term Debt, Gross	$ 400,000		$ 400,000

Premises and Equipment and Lease Commitments (Summary of Premises and Equipment) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 213,261	$ 203,009
Accumulated Depreciation, Depletion and Amortization, Property, Plant, and Equipment	(153,138)	(144,905)
Property, Plant and Equipment, Net	60,123	58,104
Assets Held-for-sale, Not Part of Disposal Group	1,427	6,789
Building and Building Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	430	0
Leasehold Improvements [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	69,863	72,627
Furniture, Fixtures And Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	35,903	36,492
Computer Equipment [Member]
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	21,358	22,729
Software, software licensing rights and capitalized costs of CCA
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	74,087	59,568
Aircraft and automobiles
Property, Plant and Equipment [Line Items]
Property, Plant and Equipment, Gross	$ 11,620	$ 11,593

Premises and Equipment and Lease Commitments (Narrative) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Property, Plant and Equipment, Type [Abstract]
Depreciation, Nonproduction	$ 15,700	$ 19,200	$ 17,500

Income Taxes Schedule of Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Current Federal Tax Expense (Benefit)									$ 63,083	$ 58,996	$ 2,172
Current State and Local Tax Expense (Benefit)									16,009	7,373	20,834
Current Income Tax Expense (Benefit)									79,092	66,369	23,006
Deferred Federal Income Tax Expense (Benefit)									(22,387)	8,255	51,303
Deferred State and Local Income Tax Expense (Benefit)									(5,199)	16,274	16,475
Deferred income taxes									(27,586)	24,529	67,778
Provision for income taxes	$ 21,228	$ 19,353	$ 20,396	$ (9,471)	$ 15,072	$ 24,182	$ 27,431	$ 24,213	$ 51,506	$ 90,898	$ 90,784

Income Taxes (Schedule of Effective Income Tax Rate Reconciliation) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Income Tax Disclosure [Abstract]
Effective Income Tax Rate Reconciliation at Federal Statutory Income Tax Rate, Amount									$ 52,366	$ 84,839	$ 87,286
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent									21.00%	21.00%	21.00%
Effective Income Tax Rate Reconciliation, Tax Exempt Income, Amount									$ 15,722	$ 17,950	$ 18,923
Effective Income Tax Rate Reconciliation, Tax Exempt Income, Percent									(6.30%)	(4.44%)	(4.55%)
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Amount									$ 13,413	$ 19,956	$ 31,182
Effective Income Tax Rate Reconciliation, State and Local Income Taxes, Percent									5.38%	4.94%	7.50%
Effective Income Tax Rate Reconciliation, Other Adjustments, Amount									$ 1,449	$ 4,053	$ (8,761)
Effective Income Tax Rate Reconciliation, Other Adjustments, Percent									0.58%	1.00%	(2.11%)
Provision for income taxes	$ 21,228	$ 19,353	$ 20,396	$ (9,471)	$ 15,072	$ 24,182	$ 27,431	$ 24,213	$ 51,506	$ 90,898	$ 90,784
Effective Income Tax Rate Reconciliation, Percent									20.66%	22.50%	21.84%

Income Taxes (Schedule of Deferred Tax Assets and Liabilities) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets:
Excess of tax basis over carrying value of acquired loans	$ 33,532	$ 50,089
Deferred Tax Assets, Tax Deferred Expense, Reserves and Accruals, Allowance for Doubtful Accounts	58,990	23,151
deferred tax assets net unrealized loss on securities available for sale and cash flow hedges	16,824	11,475
Deferred Tax Assets, Other	74,228	61,152
Deferred Tax Assets, Gross	183,574	145,867
Deferred tax liabilities:
Deferred Tax Liabilities, Leasing Arrangements	169,103	176,269
Deferred Tax Liabilities, Other	34,879	31,227
Deferred Tax Liabilities, Gross	203,982	207,496
Deferred Tax Liabilities, Net	$ (20,408)	$ (61,629)

Income Taxes (Schedule of Unrecognized Tax Benefits, Roll Forward) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized Tax Benefits	$ 414,203	$ 407,126	$ 116,081	$ 59,220
Unrecognized Tax Benefits, Increase Resulting from Current Period Tax Positions	2,117	5,352	2,399
Unrecognized Tax Benefits, Increase Resulting from Prior Period Tax Positions	2,456	279,885	51,064
Unrecognized Tax Benefits, Decrease Resulting from Current Period Tax Positions	(3,080)	0	0
Unrecognized Tax Benefits, Reduction Resulting from Lapse of Applicable Statute of Limitations	(520)	(406)	(675)
Unrecognized Tax Benefits, Period Increase (Decrease)	408,099	400,912	112,008
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	$ 6,104	$ 6,214	$ 4,073

Income Taxes Income Taxes (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Tax Credit Carryforward, Amount	$ 10,000,000.0
Amortization Method Qualified Affordable Housing Project Investments	50,000,000	$ 57,000,000
Qualified Affordable Housing Project Investments, Commitment	4,000,000	8,000,000
Variable Interest Entity, Reporting Entity Involvement, Maximum Loss Exposure, Amount	79,000,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	369,100,000	368,900,000	$ 78,200,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued	16,300,000	11,400,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense, net of tax	4,900,000	$ 4,900,000	$ 3,200,000
Internal Revenue Service (IRS) [Member]
Operating Loss Carryforwards	3,000,000.0
State and Local Jurisdiction [Member]
Operating Loss Carryforwards	110,700,000
Tax Credit Carryforward, Amount	100,700,000
Maximum [Member] \| State and Local Jurisdiction [Member]
Decrease in Unrecognized Tax Benefits is Reasonably Possible	358,700,000
Minimum \| State and Local Jurisdiction [Member]
Decrease in Unrecognized Tax Benefits is Reasonably Possible	$ 0

Derivatives and Hedging Activities (Narrative) (Details)	Dec. 31, 2020 USD ($)
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Financial collateral pledged for interest rate swaps	$ 58,900,000
Fair value of Interest rate derivative contracts cleared through the CME	0
Amount expected to be reclassified from AOCI into income	$ 53,500,000

Derivatives and Hedging Activities (Interest Rate Contract Derivative Financial Instruments and Related Hedged Items) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Derivatives Fair Value [Line Items]
Notional amount of interest rate derivatives	$ 6,425,146	$ 6,423,718
Interest rate derivative assets, fair value	123,830	43,686
Interest rate derivative liabilities, fair value	$ (44,490)	$ (19,029)
Designated as Hedging Instrument \| Pay-fixed interest rate swaps
Derivatives Fair Value [Line Items]
Weighted average fixed rate of interest rate derivatives (in Percent)	2.41%	2.37%
Weighted average remaining maturity of interest rate derivatives (in Duration)	2 years 6 months	3 years 2 months 12 days
Notional amount of interest rate derivatives	$ 2,771,000	$ 3,131,000
Designated as Hedging Instrument \| Pay-fixed interest rate swaps \| Other Liabilities
Derivatives Fair Value [Line Items]
Interest rate derivative liabilities, fair value	(5,971)	(1,607)
Designated as Hedging Instrument \| Pay-fixed interest rate swaps \| Other Assets
Derivatives Fair Value [Line Items]
Interest rate derivative assets, fair value	$ 0	$ 0
Designated as Hedging Instrument \| Interest Rate Contract [Member]
Derivatives Fair Value [Line Items]
Weighted average fixed rate of interest rate derivatives (in Percent)	1.55%	1.55%
Weighted average remaining maturity of interest rate derivatives (in Duration)	7 months 6 days	1 year 7 months 6 days
Notional amount of interest rate derivatives	$ 250,000	$ 250,000
Designated as Hedging Instrument \| Interest Rate Contract [Member] \| Other Liabilities
Derivatives Fair Value [Line Items]
Interest rate derivative liabilities, fair value	0	0
Designated as Hedging Instrument \| Interest Rate Contract [Member] \| Other Assets
Derivatives Fair Value [Line Items]
Interest rate derivative assets, fair value	$ 0	$ 0
Designated as Hedging Instrument \| interest rate caps purchased, indexed to fed funds effective rate
Derivatives Fair Value [Line Items]
Weighted average remaining maturity of interest rate derivatives (in Duration)	4 years 10 months 24 days
Notional amount of interest rate derivatives	$ 100,000
Designated as Hedging Instrument \| interest rate caps purchased, indexed to fed funds effective rate \| Other Assets
Derivatives Fair Value [Line Items]
Interest rate derivative assets, fair value	$ 485
Derivatives not designated as hedges \| Pay-fixed interest rate swaps
Derivatives Fair Value [Line Items]
Weighted average fixed rate of interest rate derivatives (in Percent)	3.61%	3.72%
Weighted average remaining maturity of interest rate derivatives (in Duration)	5 years 3 months 18 days	6 years 4 months 24 days
Notional amount of interest rate derivatives	$ 1,626,152	$ 1,460,355
Derivatives not designated as hedges \| Pay-fixed interest rate swaps \| Other Liabilities
Derivatives Fair Value [Line Items]
Interest rate derivative liabilities, fair value	(38,519)	(15,307)
Derivatives not designated as hedges \| Pay-fixed interest rate swaps \| Other Assets
Derivatives Fair Value [Line Items]
Interest rate derivative assets, fair value	$ 0	$ 876
Derivatives not designated as hedges \| Pay-variable interest rate swaps
Derivatives Fair Value [Line Items]
Weighted average fixed rate of interest rate derivatives (in Percent)	3.61%	3.72%
Weighted average remaining maturity of interest rate derivatives (in Duration)	5 years 3 months 18 days	6 years 4 months 24 days
Notional amount of interest rate derivatives	$ 1,626,152	$ 1,460,355
Derivatives not designated as hedges \| Pay-variable interest rate swaps \| Other Liabilities
Derivatives Fair Value [Line Items]
Interest rate derivative liabilities, fair value	0	(2,115)
Derivatives not designated as hedges \| Pay-variable interest rate swaps \| Other Assets
Derivatives Fair Value [Line Items]
Interest rate derivative assets, fair value	$ 123,345	$ 42,810
Derivatives not designated as hedges \| Interest rate caps purchased, indexed to 1-month Libor [Domain]
Derivatives Fair Value [Line Items]
Weighted average fixed rate of interest rate derivatives (in Percent)	3.72%	3.30%
Weighted average remaining maturity of interest rate derivatives (in Duration)	4 months 24 days	7 months 6 days
Notional amount of interest rate derivatives	$ 25,921	$ 61,004
Derivatives not designated as hedges \| Interest rate caps purchased, indexed to 1-month Libor [Domain] \| Other Liabilities
Derivatives Fair Value [Line Items]
Interest rate derivative assets, fair value	0
Derivatives not designated as hedges \| Interest rate caps purchased, indexed to 1-month Libor [Domain] \| Other Assets
Derivatives Fair Value [Line Items]
Interest rate derivative assets, fair value	$ 0	$ 0
Derivatives not designated as hedges \| Interest rate caps sold, indexed to 1-month Libor [Domain] [Domain]
Derivatives Fair Value [Line Items]
Weighted average fixed rate of interest rate derivatives (in Percent)	3.72%	3.30%
Weighted average remaining maturity of interest rate derivatives (in Duration)	4 months 24 days	7 months 6 days
Notional amount of interest rate derivatives	$ 25,921	$ 61,004
Derivatives not designated as hedges \| Interest rate caps sold, indexed to 1-month Libor [Domain] [Domain] \| Other Liabilities
Derivatives Fair Value [Line Items]
Interest rate derivative liabilities, fair value	$ 0	$ 0

Derivatives and Hedging Activities (Interest Rate Swaps Subject to Master Netting Agreements) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Gross Amounts Recognized, Derivative assets	$ 0	$ 876
Gross Amounts Recognized, Derivative liabilities	(44,490)	(16,914)
Gross Amounts Recognized, Derivative assets and liabilities	(44,490)	(16,038)
Gross Amounts Offset in Balance Sheet, Derivative assets	0	0
Gross Amounts Offset in Balance Sheet, Derivative liabilities	0	0
Gross Amounts Offset in Balance Sheet, Derivative assets and liabilities	0	0
Net Amounts Presented in Balance Sheet, Derivative assets	0	876
Net Amounts Presented in Balance Sheet, Derivative liabilities	(44,490)	(16,914)
Net Amounts Presented in Balance Sheet, Derivative assets and liabilities	(44,490)	(16,038)
Gross Amounts Not Offset in Balance Sheet
Derivative Instruments, Derivative assets	0	(876)
Derivative Instruments, Derivative liabilities	0	876
Derivative Instruments, Derivative assets and liabilities	0	0
Collateral Pledged, Derivative assets	0	0
Collateral Pledged, Derivative liabilities	44,332	16,038
Collateral Pledged, Derivative assets and liabilities	44,332	16,038
Net Amount, Derivative assets	0	0
Net Amount, Derivative liabilities	(158)	0
Net Amount, Derivative assets and liabilities	$ (158)	$ 0

Derivatives and Hedging Activities Derivative and Hedging Activities - Amount of loss reclassified from AOCI into Income (Details) - Borrowings [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Reclassification Adjustment out of Accumulated Other Comprehensive Income on Derivatives [Line Items]
Derivative Instruments, Loss Reclassified from Accumulated OCI into Income, Effective Portion	$ (46,259)
Derivative Instruments, Gain Reclassified from Accumulated OCI into Income, Effective Portion		$ 2,627	$ 1,999

Derivatives and Hedging Activities Derivative and Hedging Activities - Amount of gain (loss) recognized in earnings on Fair Value hedges (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Derivative and Hedging Activities - Amount of gain (loss) recognized in earnings on Fair Value hedges [Abstract]
Increase (Decrease) in Fair Value of Interest Rate Fair Value Hedging Instruments	$ 2,485	$ (486)
Change in Unrealized Gain (Loss) on Hedged Item in Fair Value Hedge	(2,498)	499
Gain (Loss) on Fair Value Hedge Ineffectiveness, Net	$ (13)	$ 13

Derivatives and Hedging Activities Derivative and Hedging Activities - Carrying Value of Hedged Item and Cumulative Fair Value Adjustments (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Derivative and Hedging Activities - Carrying Value of Hedged Item and Cumulative Fair Value Adjustments [Abstract]
Hedged Liability, Fair Value Hedge	$ 250,000	$ 250,000
Hedged Liability, Fair Value Hedge, Cumulative Increase (Decrease)	$ 1,999	$ (499)

Stockholders' Equity (Changes in Accumulated Other Comprehensive Income) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Unrealized gains on investment securities available for sale:
Net unrealized holding gain (loss) arising during the period, Before Tax	$ 61,291	$ 51,178	$ (77,607)
Amounts reclassified to gain on investment securities available for sale, net, Before Tax	(14,001)	(18,537)	(6,103)
Net change in unrealized gains on securities available for sale, Before Tax	47,290	32,641	(83,710)
Net unrealized holding gain (loss) arising during the period, Tax Effect	(15,246)	(13,562)	20,566
Amounts reclassified to gain on investment securities available for sale, net, Tax Effect	3,570	4,912	1,617
Net change in unrealized gains on securities available for sale, Tax Effect	(11,676)	(8,650)	22,183
Net unrealized holding gain (loss) arising during the period, Net of Tax	46,045	37,616	(57,041)
Amounts reclassified to gain on investment securities available for sale, net, Net of Tax	(10,431)	(13,625)	(4,486)
Net change in unrealized gain on securities available for sale	35,614	23,991	(61,527)
Unrealized losses on derivative instruments:
Net unrealized holding gain (loss) arising during the period, Before Tax	(116,168)	(79,945)	5,416
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	46,259	(2,627)	(1,999)
Net unrealized holding gain (loss) arising during the period, Tax Effect	28,766	21,185	(1,435)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax	(11,796)	696	530
Net unrealized holding gain (loss) arising during the period, Net of Tax	(87,402)	(58,760)	3,981
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	34,463	(1,931)	(1,469)
Net change in unrealized losses on derivative instruments	(52,939)	(60,691)	2,512
Other comprehensive income (loss), Before Tax	(22,619)	(49,931)	(80,293)
Other comprehensive income (loss), Tax Effect	5,294	13,231	21,278
Other comprehensive loss	(17,325)	(36,700)	(59,015)
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax	(69,909)	(82,572)	3,417
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax	16,970	21,881	(905)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	(49,152)	(31,827)
Other Comprehensive Income (Loss), Net of Tax	(17,325)	(36,700)	(59,015)
Net unrealized holding gain (loss) arising during the period, Before Tax	61,291	51,178	(77,607)
Other Comprehensive Income (Loss), Securities, Available-for-Sale, Unrealized Holding Gain (Loss) Arising During Period, Tax	15,246	13,562	(20,566)
Net unrealized holding gain (loss) arising during the period	46,045	37,616	(57,041)
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, before Tax	14,001	18,537	6,103
Amounts reclassified to gain on investment securities available for sale, net, Tax Effect	3,570	4,912	1,617
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI for Sale of Securities, Net of Tax	10,431	13,625	4,486
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, before Tax	47,290	32,641	(83,710)
Other Comprehensive Income (Loss), Securities, Available-for-sale, Tax	11,676	8,650	(22,183)
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax	35,614	23,991	(61,527)
Net unrealized holding gain (loss) arising during the period, Before Tax	(116,168)	(79,945)	5,416
Other Comprehensive Income (Loss), Unrealized Gain (Loss) on Derivatives Arising During Period, Tax	(28,766)	(21,185)	1,435
Net unrealized holding gain (loss) arising during the period	(87,402)	(58,760)	3,981
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, before Tax	(46,259)	2,627	1,999
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Tax	(11,796)	696	530
Other Comprehensive Income (Loss), Reclassification Adjustment from AOCI on Derivatives, Net of Tax	(34,463)	1,931	1,469
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, before Tax	(69,909)	(82,572)	3,417
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Tax	(16,970)	(21,881)	905
Other Comprehensive Income (Loss), Derivatives Qualifying as Hedges, Net of Tax	(52,939)	(60,691)	2,512
Other Comprehensive Income (Loss), before Tax	(22,619)	(49,931)	(80,293)
Other Comprehensive Income (Loss), Tax	(5,294)	(13,231)	(21,278)
Unrealized Gains on Investment Securities Available for Sale
Unrealized losses on derivative instruments:
Other comprehensive loss	35,614	23,991	(61,527)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	63,799	28,185	4,194	$ 56,534
Other Comprehensive Income (Loss), Net of Tax	35,614	23,991	(61,527)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Unrealized losses on derivative instruments:
Other comprehensive loss	(52,939)	(60,691)	2,512
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	(112,951)	(60,012)	679	(1,548)
Other Comprehensive Income (Loss), Net of Tax	(52,939)	(60,691)	2,512
Accumulated Other Comprehensive Income (Loss)
Unrealized losses on derivative instruments:
Other comprehensive loss	(17,325)	(36,700)	(59,015)
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated other comprehensive loss	(49,152)	(31,827)	4,873	$ 54,986
Other Comprehensive Income (Loss), Net of Tax	$ (17,325)	$ (36,700)	$ (59,015)

Stockholders' Equity (Categories of Other Comprehensive Income) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Other comprehensive income, Beginning Balance	$ (31,827)
Other comprehensive loss	(17,325)	$ (36,700)	$ (59,015)
Other comprehensive income, Ending Balance	(49,152)	(31,827)
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member]
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Other comprehensive income, Beginning Balance	(60,012)	679	(1,548)
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification			(285)
Other comprehensive loss	(52,939)	(60,691)	2,512
Other comprehensive income, Ending Balance	(112,951)	(60,012)	679
Unrealized Gains on Investment Securities Available for Sale
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Other comprehensive income, Beginning Balance	28,185	4,194	56,534
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification			9,187
Other comprehensive loss	35,614	23,991	(61,527)
Other comprehensive income, Ending Balance	63,799	28,185	4,194
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Other comprehensive income, Beginning Balance	(31,827)	4,873	54,986
New Accounting Pronouncement or Change in Accounting Principle, Effect of Adoption, Quantification			8,902
Other comprehensive loss	(17,325)	(36,700)	(59,015)
Other comprehensive income, Ending Balance	$ (49,152)	$ (31,827)	$ 4,873

Equity Based Compensation (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Exercise of Option, Tax Benefit	$ 600,000		$ 1,100,000
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercises in Period, Intrinsic Value	2,300,000		$ 4,600,000
Unvested and restricted share awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 22,300,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition	2 years 7 months 6 days
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	660,587	591,739	683,137
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 29.72	$ 36.49	$ 40.06
RSU and PSU Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 8,400,000
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition	2 years 2 months 12 days
Deferred Compensation Share-based Arrangements, Liability, Current and Noncurrent	$ 7,300,000
Incentive Compensation Arrangements [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period - Granted before 2019	3 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period	4 years
Liability based awards settled in shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	114,936
2010 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	24,692
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	7,500,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	7,500,000
2014 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Available for Grant	2,781,048
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	6,200,000
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized	6,200,000
401(k) Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred Compensation Arrangement with Individual, Contributions by Employer	$ 5,700,000	$ 6,100,000	$ 6,300,000
Deferred Compensation Arrangement with Individual, Contributions by Employer	5,700,000	6,100,000	6,300,000
Deferred Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred Compensation Arrangement with Individual, Compensation Expense	2,000,000.0	1,900,000	1,300,000
Deferred Compensation Arrangement with Individual, Compensation Expense	2,000,000.0	1,900,000	$ 1,300,000
Deferred Compensation Plan \| Other Liabilities
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred Compensation Liability, Current and Noncurrent	29,000,000	27,000,000
Deferred Compensation Liability, Current and Noncurrent	$ 29,000,000	$ 27,000,000
A401k Plan First1 Of Eligible Compensation Member
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred Compensation Arrangement with Individual, Cash Awards Granted, Percentage	100.00%
A401k Plan2 To6 Of Eligible Compensation
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Deferred Compensation Arrangement with Individual, Cash Awards Granted, Percentage	70.00%

Equity Based Compensation (Schedule of Compensation Costs Related to Equity Based Awards) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Expense	$ 20,514	$ 23,476	$ 23,240
Share-based Payment Arrangement, Expense, Tax Benefit	(4,854)	(4,068)	(5,783)
Share-based Payment Arrangement, Expense, after Tax	15,660	19,408	17,457
Unvested and restricted share awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Expense	15,236	17,334	19,415
RSU and PSU Awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Expense	3,133	4,953	3,027
Incentive Compensation Arrangements [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Expense	$ 2,145	$ 1,189	$ 798

Equity Based Compensation (Schedule of Nonvested Share Activity) (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 30.90	$ 36.65	$ 42.80
Range of the closing price on date of grant, minimum (in Dollars per Share)	$ 13.99	$ 31.07	$ 33.44
Aggregate grant date fair value of shares vesting	$ 18,654	$ 21,064	$ 18,451
Unvested and restricted share awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount	$ 22,300
Share-based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition	2 years 7 months 6 days
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Additional Disclosures [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	1,161,835	1,050,455	1,186,238	1,108,477
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value	$ 33.32	$ 38.24	$ 38.86	$ 36.06
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	660,587	591,739	683,137
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	(479,057)	(561,769)	(532,662)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value	$ 38.94	$ 37.50	$ 34.64
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Forfeitures and Expirations	(70,150)	(165,753)	(72,714)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value	$ 34.78	$ 38.95	$ 38.43
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 29.72	$ 36.49	$ 40.06

Equity Based Compensation Schedule of Other Share-Based Compensation, Activity (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Aggregate grant date fair value of shares vesting	$ 18,654	$ 21,064	$ 18,451
Range of the closing price on date of grant, minimum (in Dollars per Share)	$ 13.99	$ 31.07	$ 33.44
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	30.90	$ 36.65	$ 42.80
May
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
closing price on date of grant	$ 13.99
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	44,534
March
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
closing price on date of grant	$ 30.90
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	599,766
November
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
closing price on date of grant	$ 29.17
Share-based Compensation Arrangement by Share-based Payment Award, Options, Grants in Period, Gross	16,287
Unvested and restricted share awards [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	660,587	591,739	683,137
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	(479,057)	(561,769)	(532,662)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	1,161,835	1,050,455	1,186,238	1,108,477
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value	$ 33.32	$ 38.24	$ 38.86	$ 36.06
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	29.72	36.49	40.06
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value	$ (38.94)	$ (37.50)	$ (34.64)
Share-based Compensation Arrangement by Share-based Payment Award, Non-Option Equity Instruments, Forfeitures and Expirations	(70,150)	(165,753)	(72,714)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Forfeitures, Weighted Average Grant Date Fair Value	$ 34.78	$ 38.95	$ 38.43
Restricted Stock Units (RSUs) [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period	106,731	73,062	52,026
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period	(62,292)	(51,555)	(52,580)
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	156,555	112,116	90,609	91,163
Performance share units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Nonvested, Number	179,793	125,088	99,867	105,714
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value	$ 106,731	$ 73,062	$ 52,026
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value	$ (52,026)	$ (47,841)	$ (57,873)

Equity Based Compensation (Schedule of Stock Options Activity) (Details) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Share-based Payment Arrangement [Abstract]
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Number	1,569	737,753	964,840	1,270,688
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price	$ 15.94	$ 26.64	$ 26.53	$ 26.93
Exercise of stock options (in Shares)	(735,400)	(225,127)	(291,689)
Share-based Compensation Arrangements by Share-based Payment Award, Options, Exercises in Period, Weighted Average Exercise Price	$ 26.67	$ 25.84	$ 26.49
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period	(784)	(1,960)	(14,159)
Share-based Compensation Arrangement by Share-based Payment Award, Options, Forfeitures and Expirations in Period, Weighted Average Exercise Price	$ 22.18	$ 63.74	$ 63.74
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Exercise Price	$ 15.94
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Number	1,569
Share-based Compensation Arrangement by Share-based Payment Award, Options, Exercisable, Weighted Average Remaining Contractual Term	3 months 18 days

Regulatory Requirements and Restrictions (Schedule of Compliance with Regulatory Capital Requirements Under Banking Regulations) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Parent Company [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier One Leverage Capital	$ 3,005,495	$ 2,932,939
Tier One Leverage Capital to Average Assets	8.63%	8.90%
Tier One Leverage Capital Required for Capital Adequacy	$ 1,392,950	$ 1,317,960
Tier One Leverage Capital Required for Capital Adequacy to Average Assets	4.00%	4.00%
Common Equity Tier One Risk Based Capital	$ 3,005,495	$ 2,932,939
Common Equity Tier One Risk Based Capital to Risk Weighted Assets	12.57%	12.32%
Common Equity Tier One Risk Based Capital Required to be Well Capitalized	$ 1,553,546	$ 1,547,531
Common Equity Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	6.50%	6.50%
Common Equity Tier One Risk Based Capital Required for Capital Adequacy	$ 1,075,532	$ 1,071,368
Common Equity Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	4.50%	4.50%
Capital conservation buffer required for Common equity tier one	$ 1,673,049	$ 1,666,572
Capital conservation buffer required for Common equity tier one ratio	7.00%	7.00%
Tier One Risk Based Capital	$ 3,005,495	$ 2,932,939
Tier One Risk Based Capital to Risk Weighted Assets	12.57%	12.32%
Tier One Risk Based Capital Required to be Well Capitalized	$ 1,912,056	$ 1,904,654
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	8.00%	8.00%
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	$ 1,434,042	$ 1,428,490
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	6.00%	6.00%
Capital conservation buffer required for tier one risk based	$ 2,031,560	$ 2,023,694
Capital conservation buffer required for tier one risk based ratio	8.50%	8.50%
Capital	$ 3,502,804	$ 3,044,263
Capital to Risk Weighted Assets	14.66%	12.79%
Capital Required to be Well Capitalized	$ 2,390,070	$ 2,380,817
Capital Required to be Well Capitalized to Risk Weighted Assets	10.00%	10.00%
Capital Required to be Well Capitalized to Risk Weighted Assets	$ 1,912,056	$ 1,904,654
Capital Required for Capital Adequacy to Risk Weighted Assets	8.00%	8.00%
Capital required under capital conservation buffer	$ 2,509,574	$ 2,499,858
Capital required under capital conservation buffer ratio	10.50%	10.50%
BankUnited [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Tier One Leverage Capital	$ 3,310,736	$ 3,056,820
Tier One Leverage Capital to Average Assets	9.54%	9.30%
Tier One Leverage Capital Required to be Well Capitalized	$ 1,734,604	$ 1,643,599
Tier One Leverage Capital Required to be Well Capitalized to Average Assets	5.00%	5.00%
Tier One Leverage Capital Required for Capital Adequacy	$ 1,387,683	$ 1,314,879
Tier One Leverage Capital Required for Capital Adequacy to Average Assets	4.00%	4.00%
Common Equity Tier One Risk Based Capital	$ 3,310,736	$ 3,056,820
Common Equity Tier One Risk Based Capital to Risk Weighted Assets	13.93%	12.89%
Common Equity Tier One Risk Based Capital Required to be Well Capitalized	$ 1,544,939	$ 1,541,738
Common Equity Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	6.50%	6.50%
Common Equity Tier One Risk Based Capital Required for Capital Adequacy	$ 1,069,573	$ 1,067,357
Common Equity Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	4.50%	4.50%
Capital conservation buffer required for Common equity tier one	$ 1,663,781	$ 1,660,333
Capital conservation buffer required for Common equity tier one ratio	7.00%	7.00%
Tier One Risk Based Capital	$ 3,310,736	$ 3,056,820
Tier One Risk Based Capital to Risk Weighted Assets	13.93%	12.89%
Tier One Risk Based Capital Required to be Well Capitalized	$ 1,901,464	$ 1,897,524
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	8.00%	8.00%
Tier One Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	$ 1,426,098	$ 1,423,143
Tier One Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	6.00%	6.00%
Capital conservation buffer required for tier one risk based	$ 2,020,305	$ 2,016,119
Capital conservation buffer required for tier one risk based ratio	8.50%	8.50%
Capital	$ 3,508,044	$ 3,168,144
Capital to Risk Weighted Assets	14.76%	13.36%
Capital Required to be Well Capitalized	$ 2,376,829	$ 2,371,905
Capital Required to be Well Capitalized to Risk Weighted Assets	10.00%	10.00%
Capital Required to be Well Capitalized to Risk Weighted Assets	$ 1,901,464	$ 1,897,524
Capital Required for Capital Adequacy to Risk Weighted Assets	8.00%	8.00%
Capital required under capital conservation buffer	$ 2,495,671	$ 2,490,500
Capital required under capital conservation buffer ratio	10.50%	10.50%

Fair Value Measurements (Assets for which Nonrecurring Changes in Fair Value have been Recorded) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	$ 9,297,586	$ 7,810,900
Fair Value, Inputs, Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	97,089	83,999
Fair Value, Inputs, Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	9,112,461	7,680,003
OREO and Repossessed Assets [Member] \| Fair Value, Inputs, Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	2,786	1,098
Impaired Loans [Member] \| Fair Value, Inputs, Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	73,803	79,982
Property Subject to Operating Lease [Member] \| Fair Value, Inputs, Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure		2,919
Loans Held For Sale \| Fair Value, Inputs, Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Assets, Fair Value Disclosure	$ 20,500	$ 0

Fair Value Measurements (Carrying Value and Fair Value of Financial Instruments) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Assets:
Investments, Fair Value Disclosure	$ 9,177,870	$ 7,769,949
Non-marketable equity securities	195,865	253,664
Liabilities:
Time Deposits	4,807,199	7,347,247
Federal funds purchased	180,000	100,000
Fair Value, Inputs, Level 1
Assets:
Cash and cash equivalents	397,716	214,673
Fair Value, Inputs, Level 2
Assets:
Non-marketable equity securities	195,865	253,664
Loans held for sale	25,057	39,731
Derivative assets	123,830	43,686
Liabilities:
Time Deposits	4,814,862	7,377,301
Federal funds purchased	180,000	100,000
FHLB advances	3,127,190	4,500,969
Notes Payable, Fair Value Disclosure	849,120	473,327
Derivative liabilities	44,490	19,029
Demand, savings and money market deposits	22,688,617	17,047,344
Fair Value, Inputs, Level 3
Assets:
Loans Receivable, Fair Value Disclosure	24,205,016	23,350,684
Carrying Value
Assets:
Cash and cash equivalents	397,716	214,673
Investments, Fair Value Disclosure	9,176,683	7,769,237
Non-marketable equity securities	195,865	253,664
Loans held for sale	24,676	37,926
Loans Receivable, Fair Value Disclosure	23,608,719	23,046,317
Derivative assets	123,830	43,686
Liabilities:
Time Deposits	4,807,199	7,347,247
Federal funds purchased	180,000	100,000
FHLB advances	3,122,999	4,480,501
Notes Payable, Fair Value Disclosure	722,495	429,338
Derivative liabilities	44,490	19,029
Demand, savings and money market deposits	$ 22,688,617	$ 17,047,344

Commitments and Contingencies Commitments (Details) $ in Thousands	Dec. 31, 2020 USD ($)
Lending related commitments [Line Items]
Unused Commitments to Extend Credit	$ 4,133,006
Loan Origination Commitments [Member]
Lending related commitments [Line Items]
Unused Commitments to Extend Credit	419,526
Unused lines of Credit [Member]
Lending related commitments [Line Items]
Unused Commitments to Extend Credit	3,620,155
Standby Letters of Credit [Member]
Lending related commitments [Line Items]
Unused Commitments to Extend Credit	$ 93,325

Condensed Financial Statements of BankUnited, Inc. (Schedule of Condensed Balance Sheet) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018	Jan. 01, 2018	Dec. 31, 2017
Assets:
Cash and cash equivalents	$ 397,716	$ 214,673
Investment securities available for sale, at fair value	9,062,409	7,698,665
Other assets	571,051	491,498
Total assets	35,010,493	32,871,293
Liabilities and Stockholders' Equity:
Liabilities	32,027,481	29,890,514
Stockholders' equity	2,983,012	2,980,779	$ 2,923,833	$ 3,026,062	$ 3,026,062
Total liabilities and stockholders' equity	35,010,493	32,871,293
Parent Company [Member]
Assets:
Cash and cash equivalents	289,761	204,589	$ 143,843		$ 131,696
Investment securities available for sale, at fair value	104,274	60,572
Investment in subsidiaries	3,288,252	3,104,660
Other assets	29,978	42,454
Total assets	3,712,265	3,412,275
Liabilities and Stockholders' Equity:
Notes Payable	689,932	395,090
Liabilities	39,321	36,406
Stockholders' equity	2,983,012	2,980,779
Total liabilities and stockholders' equity	$ 3,712,265	$ 3,412,275

Condensed Financial Statements of BankUnited, Inc. (Schedule of Condensed Statements of Income) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Condensed Income Statements, Captions [Line Items]
Interest Expense - Borrowings									$ 115,871	$ 143,905	$ 114,488
Employee compensation and benefits									217,156	235,330	254,997
Provision for income taxes	$ 21,228	$ 19,353	$ 20,396	$ (9,471)	$ 15,072	$ 24,182	$ 27,431	$ 24,213	51,506	90,898	90,784
Net income	$ 85,737	$ 66,559	$ 76,508	$ (30,951)	$ 89,456	$ 76,219	$ 81,451	$ 65,972	197,853	313,098	324,866
Parent Company [Member]
Condensed Income Statements, Captions [Line Items]
Interest and Dividend Income - Investment securities									4,214	3,595	3,532
Service fees from subsidiaries									15,935	18,080	21,000
Equity in earnings of subsidiaries									224,734	335,723	349,937
Other Income									3,822	2,690	(2,805)
Total Income									248,705	360,088	371,664
Interest Expense - Borrowings									29,041	20,200	20,165
Employee compensation and benefits									24,867	28,270	28,477
Other Expenses									3,711	4,396	5,617
Total expense									57,619	52,866	54,259
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest									191,086	307,222	317,405
Provision for income taxes									(6,767)	(5,876)	(7,461)
Net income									$ 197,853	$ 313,098	$ 324,866

Condensed Financial Statements of BankUnited, Inc. (Schedule of Condensed Statements of Cash Flows) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net income	$ 85,737	$ 66,559	$ 76,508	$ (30,951)	$ 89,456	$ 76,219	$ 81,451	$ 65,972	$ 197,853	$ 313,098	$ 324,866
Adjustments to reconcile net income to net cash provided by operating activities:
Equity based compensation									20,367	23,367	23,137
Net cash provided by operating activities									864,168	635,706	824,252
Cash flows from investing activities:
Purchase of investment securities available for sale									(4,208,597)	(3,896,234)	(4,138,994)
Proceeds from repayments and calls of investment securities									1,352,788	1,370,584	1,533,951
Other									(22,117)	(39,879)	(3,184)
Net cash used in investing activities									(2,620,715)	(1,075,496)	(2,041,531)
Cash flows from financing activities:
Dividends paid									(86,522)	(84,083)	(91,305)
Exercise of stock options									(19,611)	(5,817)	(7,727)
Other									7,610	25,682	7,424
Net cash provided by financing activities									1,939,590	272,390	1,404,770
Cash and cash equivalents, beginning of period				214,673					214,673
Cash and cash equivalents, end of period	397,716				214,673				397,716	214,673
Supplemental schedule of non-cash investing and financing activities:
Dividends declared, not paid									22,309	20,775	21,673
Payments for Repurchase of Common Stock									(100,972)	(154,030)	(299,972)
Proceeds from Issuance of Subordinated Long-term Debt									293,858	0	0
Parent Company [Member]
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net income									197,853	313,098	324,866
Adjustments to reconcile net income to net cash provided by operating activities:
Equity in undistributed earnings of subsidiaries									(224,734)	(30,723)	70,064
Equity based compensation									20,367	23,367	23,137
Increase (Decrease) in Other Operating Assets and Liabilities, Net									10,171	(8,656)	(15,654)
Net cash provided by operating activities									3,657	297,086	402,413
Cash flows from investing activities:
Capital contributions to subsidiary									(53,266)	(8,963)	0
Purchase of investment securities available for sale									13,426	11,575	0
Proceeds from repayments and calls of investment securities									0	(142)	(156)
Other									(39,840)	2,470	(156)
Net cash used in investing activities
Cash flows from financing activities:
Dividends paid									(86,522)	(84,083)	(91,305)
Exercise of stock options									(19,611)	(5,817)	(7,727)
Other									4,620	6,514	6,560
Net cash provided by financing activities									121,355	(238,810)	(390,110)
Net (decrease) increase in cash and cash equivalents									85,172	60,746	12,147
Cash and cash equivalents, beginning of period				$ 204,589				$ 143,843	204,589	143,843	131,696
Cash and cash equivalents, end of period	$ 289,761				$ 204,589				289,761	204,589	143,843
Supplemental schedule of non-cash investing and financing activities:
Dividends declared, not paid									22,309	20,775	21,673
Payments for Repurchase of Common Stock									(100,972)	(154,030)	(299,972)
Proceeds from Issuance of Subordinated Long-term Debt									$ 293,858	$ 0	$ 0

Condensed Financial Statements of BankUnited, Inc. (Narrative) (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
SEC Schedule, 12-04, Cash Dividends Paid to Registrant, Consolidated Subsidiaries	$ (305)	$ (420)

Quarterly Financial Information (Unaudited) (Schedule of Quarterly Financial Information) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Quarterly Financial Information Disclosure [Abstract]
Interest and Dividend Income, Operating	$ 251,120	$ 254,572	$ 267,778	$ 294,139	$ 309,410	$ 323,402	$ 327,229	$ 321,829	$ 1,067,609	$ 1,281,870	$ 1,449,144
Interest Expense	57,754	67,093	77,441	113,563	124,099	137,712	136,346	130,928	315,851	529,085	399,051
Net interest income before provision for loan losses	193,366	187,479	190,337	180,576	185,311	185,690	190,883	190,901	751,758	752,785	1,050,093
Provision for credit losses	(1,643)	29,232	25,414	125,428	(469)	1,839	(2,747)	10,281	178,431	8,904	25,925
Net interest income after provision for loan losses	195,009	158,247	164,923	55,148	185,780	183,851	193,630	180,620	573,327	743,881	1,024,168
Noninterest Income	35,280	36,292	38,351	23,298	37,756	37,856	35,337	36,255	133,221	147,204	132,022
Noninterest Expense	123,324	108,627	106,370	118,868	119,008	121,306	120,085	126,690	457,189	487,089	740,540
Income (Loss) from Continuing Operations before Income Taxes, Domestic	106,965	85,912	96,904	(40,422)	104,528	100,401	108,882	90,185	249,359	403,996
Provision for income taxes	21,228	19,353	20,396	(9,471)	15,072	24,182	27,431	24,213	51,506	90,898	90,784
Net income	$ 85,737	$ 66,559	$ 76,508	$ (30,951)	$ 89,456	$ 76,219	$ 81,451	$ 65,972	$ 197,853	$ 313,098	$ 324,866
Earnings per common share, basic	$ 0.89	$ 0.70	$ 0.80	$ (0.33)	$ 0.91	$ 0.78	$ 0.81	$ 0.65	$ 2.06	$ 3.14	$ 3.01
Earnings per common share, diluted	$ 0.89	$ 0.70	$ 0.80	$ (0.33)	$ 0.91	$ 0.77	$ 0.81	$ 0.65	$ 2.06	$ 3.13	$ 2.99

Label	Element	Value
Additional Paid-in Capital [Member]
Stockholders' Equity Attributable to Parent	us-gaap_StockholdersEquity	$ 1,498,227,000
Stockholders' Equity Attributable to Parent	us-gaap_StockholdersEquity	1,083,920,000
Retained Earnings [Member]
Stockholders' Equity Attributable to Parent	us-gaap_StockholdersEquity	1,462,879,000
Common Stock [Member]
Stockholders' Equity Attributable to Parent	us-gaap_StockholdersEquity	1,068,000
Stockholders' Equity Attributable to Parent	us-gaap_StockholdersEquity	$ 951,000
Shares, Outstanding	us-gaap_SharesOutstanding	106,848,185
Shares, Outstanding	us-gaap_SharesOutstanding	95,128,231
AOCI Attributable to Parent [Member]
Stockholders' Equity Attributable to Parent	us-gaap_StockholdersEquity	$ 63,888,000
Stockholders' Equity Attributable to Parent	us-gaap_StockholdersEquity	(31,827,000)
Accounting Standards Update 2016-13 [Member]
Stockholders' Equity Attributable to Parent	us-gaap_StockholdersEquity	2,956,962,000
Accounting Standards Update 2016-13 [Member] \| Retained Earnings [Member]
Stockholders' Equity Attributable to Parent	us-gaap_StockholdersEquity	$ 1,903,918,000

Investment Securities (Schedule of the Aggregate Fair Value and Amount by which Amortized Cost Exceeds Fair Value for Investment Securities that are in Unrealized Loss Positions) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	$ 2,165,618	$ 1,922,326
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(16,966)	(9,848)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	1,158,153	1,205,877
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(14,475)	(11,760)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	3,323,771	3,128,203
Gross Unrealized Losses	(31,441)	(21,608)
U.S. Treasury securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	24,369	20,056
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(375)	(137)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	24,369	20,056
Gross Unrealized Losses	(375)	(137)
U.S. Government agency and sponsored enterprise residential MBS
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	220,179	579,076
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(320)	(3,862)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	370,727	243,839
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(2,708)	(2,651)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	590,906	822,915
Gross Unrealized Losses	(3,028)	(6,513)
U.S. Government agency and sponsored enterprise commercial MBS
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	152,233	99,610
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(1,412)	(696)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	44,255	6,477
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(255)	(35)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	196,488	106,087
Gross Unrealized Losses	(1,667)	(731)
Private label residential mortgage-backed securities and CMOs
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	141,407	180,398
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(561)	(838)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0	41,636
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	(173)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	141,407	222,034
Gross Unrealized Losses	(561)	(1,011)
Private label commercial mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	1,268,381	648,761
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(12,771)	(1,060)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	37,783	76,302
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(77)	(134)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	1,306,164	725,063
Gross Unrealized Losses	(12,848)	(1,194)
Single family rental real estate-backed securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	28,758	241,915
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(58)	(1,445)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	0	5,460
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	(5)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	28,758	247,375
Gross Unrealized Losses	(58)	(1,450)
Collateralized loan obligations
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	304,051	63,310
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(1,171)	(846)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	588,463	682,076
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(7,564)	(7,015)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	892,514	745,386
Gross Unrealized Losses	(8,735)	(7,861)
Non-mortgage asset-backed securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	0	78,964
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	0	(962)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	12,327	7,883
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(234)	(85)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	12,327	86,847
Gross Unrealized Losses	(234)	(1,047)
State and municipal obligations
Debt Securities, Available-for-sale [Line Items]
Gross Unrealized Losses	0	0
SBA securities
Debt Securities, Available-for-sale [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than Twelve Months, Fair Value	26,240	10,236
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	(298)	(2)
Available-for-sale Securities, Continuous Unrealized Loss Position, Twelve Months or Longer, Fair Value	104,598	142,204
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	(3,637)	(1,662)
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	130,838	152,440
Gross Unrealized Losses	$ (3,935)	$ (1,664)

Loans and Allowance for Credit Losses (Schedule of Financing Receivables Past Due) (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Not Past Due	$ 22,814,034	$ 22,359,032
Financing Receivable, before Allowance for Credit Loss and Fee	23,866,042	23,154,988
Financing Receivable, 90 Days or More Past Due, Still Accruing	562,000	531,000
1-4 single family residential
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Not Past Due	4,857,332	4,887,618
Financing Receivable, before Allowance for Credit Loss and Fee	4,922,836	4,953,936
US Government Agency Insured Loans [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Not Past Due	722,367	93,560
Financing Receivable, before Allowance for Credit Loss and Fee	1,419,074	698,644
Other Consumer Loans
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Not Past Due	6,022	8,539
Financing Receivable, before Allowance for Credit Loss and Fee	6,312	8,539
Multi-family
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Not Past Due	1,602,990	2,217,705
Financing Receivable, before Allowance for Credit Loss and Fee	1,639,201	2,217,705
Commercial real estate, Non-owner occupied
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Not Past Due	4,876,823	5,015,458
Financing Receivable, before Allowance for Credit Loss and Fee	4,963,273	5,030,904
Construction and land
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Not Past Due	288,032	240,647
Financing Receivable, before Allowance for Credit Loss and Fee	293,307	243,925
Commercial real estate, Owner occupied
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Not Past Due	1,971,475	2,041,352
Financing Receivable, before Allowance for Credit Loss and Fee	2,000,770	2,062,808
Commercial and industrial
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Not Past Due	4,366,009	4,595,847
Financing Receivable, before Allowance for Credit Loss and Fee	4,447,383	4,655,349
Payment Protection Plan [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Not Past Due	781,811
Financing Receivable, before Allowance for Credit Loss and Fee	781,811
Pinnacle Public Finance [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Not Past Due	1,107,386	1,202,430
Financing Receivable, before Allowance for Credit Loss and Fee	1,107,386	1,202,430
Bridge - franchise finance [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Not Past Due	498,831	610,315
Financing Receivable, before Allowance for Credit Loss and Fee	549,733	627,482
Bridge - equipment finance [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Not Past Due	475,548	677,089
Financing Receivable, before Allowance for Credit Loss and Fee	475,548	684,794
Mortgage warehouse lending [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Not Past Due	1,259,408	768,472
Financing Receivable, before Allowance for Credit Loss and Fee	1,259,408	768,472
Financial Asset, Current [Member] \| 1-4 single family residential
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss and Fee	4,857,332	4,887,618
30 - 59 Days Past Due
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	262,556	108,571
30 - 59 Days Past Due \| 1-4 single family residential
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	48,851	45,634
Financing Receivable, before Allowance for Credit Loss and Fee	48,851	45,634
30 - 59 Days Past Due \| US Government Agency Insured Loans [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	77,883	45,347
30 - 59 Days Past Due \| Other Consumer Loans
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	37	0
30 - 59 Days Past Due \| Multi-family
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	17,842	0
30 - 59 Days Past Due \| Commercial real estate, Non-owner occupied
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	34,117	0
30 - 59 Days Past Due \| Construction and land
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	4,530	2,396
30 - 59 Days Past Due \| Commercial real estate, Owner occupied
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	10,756	1,336
30 - 59 Days Past Due \| Commercial and industrial
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	52,117	2,313
30 - 59 Days Past Due \| Payment Protection Plan [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	0
30 - 59 Days Past Due \| Pinnacle Public Finance [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	0	0
30 - 59 Days Past Due \| Bridge - franchise finance [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	16,423	3,840
30 - 59 Days Past Due \| Bridge - equipment finance [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	0	7,705
30 - 59 Days Past Due \| Mortgage warehouse lending [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	0	0
60 - 89 Days Past Due
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	97,115	52,154
60 - 89 Days Past Due \| 1-4 single family residential
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	7,489	9,578
Financing Receivable, before Allowance for Credit Loss and Fee	7,489	9,578
60 - 89 Days Past Due \| US Government Agency Insured Loans [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	56,495	30,426
60 - 89 Days Past Due \| Other Consumer Loans
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	22	0
60 - 89 Days Past Due \| Multi-family
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	0	0
60 - 89 Days Past Due \| Commercial real estate, Non-owner occupied
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	20,291	928
60 - 89 Days Past Due \| Construction and land
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	399	0
60 - 89 Days Past Due \| Commercial real estate, Owner occupied
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	3,203	4,420
60 - 89 Days Past Due \| Commercial and industrial
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	552	4,301
60 - 89 Days Past Due \| Payment Protection Plan [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	0
60 - 89 Days Past Due \| Pinnacle Public Finance [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	0	0
60 - 89 Days Past Due \| Bridge - franchise finance [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	8,664	2,501
60 - 89 Days Past Due \| Bridge - equipment finance [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	0	0
60 - 89 Days Past Due \| Mortgage warehouse lending [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	0	0
90 Days or More Past Due
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	692,337	635,231
90 Days or More Past Due \| 1-4 single family residential
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	9,164	11,106
Financing Receivable, before Allowance for Credit Loss and Fee	9,164	11,106
90 Days or More Past Due \| US Government Agency Insured Loans [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	562,329	529,311
90 Days or More Past Due \| Other Consumer Loans
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	231	0
90 Days or More Past Due \| Multi-family
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	18,369	0
90 Days or More Past Due \| Commercial real estate, Non-owner occupied
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	32,042	14,518
90 Days or More Past Due \| Construction and land
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	346	882
90 Days or More Past Due \| Commercial real estate, Owner occupied
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	15,336	15,700
90 Days or More Past Due \| Commercial and industrial
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	28,705	52,888
90 Days or More Past Due \| Payment Protection Plan [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	0
90 Days or More Past Due \| Pinnacle Public Finance [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	0	0
90 Days or More Past Due \| Bridge - franchise finance [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	25,815	10,826
90 Days or More Past Due \| Bridge - equipment finance [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	0	0
90 Days or More Past Due \| Mortgage warehouse lending [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, Past Due	0	0
Small business finance [Member]
Financing Receivable Investment Past Due [Line Items]
Financing Receivable, 90 Days or More Past Due, Still Accruing	$ 40,300	$ 36,300