Byline Bancorp (BY) 10-Q 7 May 21 2021 Q1 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2021	May 05, 2021
Cover [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2021
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
Trading Symbol	BY
Entity Registrant Name	Byline Bancorp, Inc.
Entity Central Index Key	0001702750
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Interactive Data Current	Yes
Document Quarterly Report	true
Document Transition Report	false
Entity Current Reporting Status	Yes
Entity Shell Company	false
Entity File Number	001-38139
Entity Tax Identification Number	36-3012593
Entity Incorporation, State or Country Code	DE
Entity Address, Address Line One	180 North LaSalle Street
Entity Address, Address Line Two	Suite 300
Entity Address, City or Town	Chicago
Entity Address, State or Province	IL
Entity Address, Postal Zip Code	60601
City Area Code	773
Local Phone Number	244-7000
Entity Common Stock, Shares Outstanding		38,629,513
Title of each class	Common Stock
Name of each exchange on which registered	NYSE

CONDENSED CONSOLIDATED STATEMEN

CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (UNAUDITED) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
ASSETS
Cash and due from banks	$ 47,101	$ 41,432
Interest bearing deposits with other banks	66,038	41,988
Cash and cash equivalents	113,139	83,420
Equity and other securities, at fair value	8,557	8,764
Securities available-for-sale, at fair value	1,675,907	1,447,230
Securities held-to-maturity, at amortized cost (fair value at March 31, 2021—$4,066, December 31, 2020 —$4,573)	3,892	4,395
Restricted stock, at cost	19,057	10,507
Loans held for sale	28,584	7,924
Loans and leases:
Loans and leases	4,454,620	4,340,535
Allowance for loan and lease losses	(65,590)	(66,347)
Net loans and leases	4,389,030	4,274,188
Servicing assets, at fair value	22,140	22,042
Premises and equipment, net	85,182	86,728
Other real estate owned, net	5,952	6,350
Goodwill and other intangible assets, net	170,882	172,631
Bank-owned life insurance	60,258	10,009
Deferred tax assets, net	48,662	40,181
Accrued interest receivable and other assets	118,883	216,283
Total assets	6,750,125	6,390,652
LIABILITIES
Non-interest-bearing demand deposits	2,015,643	1,762,676
Interest-bearing deposits	3,008,897	2,989,355
Total deposits	5,024,540	4,752,031
Other borrowings	749,719	647,901
Subordinated notes, net	73,386	73,342
Junior subordinated debentures issued to capital trusts, net	36,565	36,451
Accrued interest payable and other liabilities	72,120	75,463
Total liabilities	5,956,330	5,585,188
STOCKHOLDERS’ EQUITY
Preferred stock	10,438	10,438
Common stock	385	384
Additional paid-in capital	589,209	587,165
Retained earnings	210,385	191,098
Treasury stock, at cost	(8,275)	(1,668)
Accumulated other comprehensive income (loss), net of tax	(8,347)	18,047
Total stockholders’ equity	793,795	805,464
Total liabilities and stockholders’ equity	$ 6,750,125	$ 6,390,652
Preferred shares par value	$ 0.01	$ 0.01
Preferred shares authorized	50,000	50,000
Preferred shares issued	10,438	10,438
Preferred shares outstanding	10,438	10,438
Common shares par value	$ 0.01	$ 0.01
Common shares authorized	150,000,000	150,000,000
Common shares issued	39,106,222	38,736,540
Common shares outstanding	38,641,851	38,618,054
Treasury common shares	464,371	118,486

CONDENSED CONSOLIDATED STATEM_2

CONDENSED CONSOLIDATED STATEMENTS OF FINANCIAL CONDITION (UNAUDITED) (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Statement Of Financial Position [Abstract]
Securities held-to-maturity, fair value	$ 4,066	$ 4,573

CONDENSED CONSOLIDATED STATEM_3

CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
INTEREST AND DIVIDEND INCOME
Interest and fees on loans and leases	$ 53,808	$ 54,158
Interest on securities	6,089	8,016
Other interest and dividend income	262	992
Total interest and dividend income	60,159	63,166
INTEREST EXPENSE
Deposits	1,421	7,804
Other borrowings	502	1,897
Subordinated notes and debentures	1,596	640
Total interest expense	3,519	10,341
Net interest income	56,640	52,825
PROVISION FOR LOAN AND LEASE LOSSES	4,367	14,455
Net interest income after provision for loan and lease losses	52,273	38,370
NON-INTEREST INCOME
Total non-interest income	15,742	9,307
ATM and interchange fees	1,012	1,216
Net gains on sales of securities available-for-sale	1,462	1,375
Change in fair value of equity securities, net	(206)	(619)
Net gains on sales of loans	8,319	4,773
Wealth management and trust income	768	669
Other non-interest income	1,459	526
NON-INTEREST EXPENSE
Salaries and employee benefits	21,806	24,666
Occupancy and equipment expense, net	5,779	5,524
Loan and lease related expenses	951	1,318
Legal, audit and other professional fees	2,214	2,334
Data processing	2,755	2,665
Net loss recognized on other real estate owned and other related expenses	621	519
Other intangible assets amortization expense	1,749	1,893
Other non-interest expense	2,967	4,742
Total non-interest expense	38,842	43,661
INCOME BEFORE PROVISION FOR INCOME TAXES	29,173	4,016
PROVISION FOR INCOME TAXES	7,375	1,050
NET INCOME	21,798	2,966
Dividends on preferred shares	196	196
INCOME AVAILABLE TO COMMON STOCKHOLDERS	$ 21,602	$ 2,770
EARNINGS PER COMMON SHARE
Basic	$ 0.57	$ 0.07
Diluted	$ 0.56	$ 0.07
Fees and Service Charges on Deposits [Member]
NON-INTEREST INCOME
Total non-interest income	$ 1,664	$ 1,673
Loan Servicing Revenue [Member]
NON-INTEREST INCOME
Total non-interest income	2,769	2,758
Loan Servicing Asset Revaluation [Member]
NON-INTEREST INCOME
Total non-interest income	$ (1,505)	$ (3,064)

CONDENSED CONSOLIDATED STATEM_4

CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement Of Other Comprehensive Income [Abstract]
Net income	$ 21,798	$ 2,966
Securities available-for-sale
Unrealized holding gains (losses) arising during the period	(40,131)	16,665
Reclassification adjustments for net gains included in net income	(1,462)	(1,375)
Tax effect	11,582	(4,258)
Net of tax	(30,011)	11,032
Cash flow hedges
Unrealized holding gains arising during the period	4,992
Reclassification adjustments for net losses included in net income	21	21
Tax effect	(1,396)	(5)
Net of tax	3,617	16
Total other comprehensive income (loss)	(26,394)	11,048
Comprehensive income (loss)	$ (4,596)	$ 14,014

CONDENSED CONSOLIDATED STATEM_5

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS EQUITY (UNAUDITED) - USD ($) $ in Thousands	Total	Preferred Stock	Common Stock	Additional Paid-In Capital	Retained Earnings	Treasury Stock	Accumulated Other Comprehensive Income (Loss)
Beginning balance at Dec. 31, 2019	$ 750,115	$ 10,438	$ 379	$ 580,965	$ 159,033		$ (700)
Beginning balance, shares at Dec. 31, 2019		10,438	38,256,500
Net income	2,966				2,966
Other comprehensive income (loss), net of tax	11,048						11,048
Issuance of common stock upon exercise of stock options	677		$ 1	676
Issuance of common stock upon exercise of stock options, shares			55,402
Restricted stock activity, shares			174,036
Issuance of common stock in connection with employee stock purchase plan	268			268
Issuance of common stock in connection with employee stock purchase plan, shares			15,569
Cash dividends declared on preferred stock	(196)				(196)
Cash dividends declared on common stock	(1,151)				(1,151)
Repurchase of common stock	(1,668)					$ (1,668)
Repurchase of common stock, shares			(118,486)
Share-based compensation expense	608			608
Ending balance at Mar. 31, 2020	762,667	$ 10,438	$ 380	582,517	160,652	(1,668)	10,348
Ending balance, shares at Mar. 31, 2020		10,438	38,383,021
Beginning balance at Dec. 31, 2019	$ 750,115	$ 10,438	$ 379	580,965	159,033		(700)
Beginning balance, shares at Dec. 31, 2019		10,438	38,256,500
Repurchase of common stock, shares	(118,486)
Ending balance at Dec. 31, 2020	$ 805,464	$ 10,438	$ 384	587,165	191,098	(1,668)	18,047
Ending balance, shares at Dec. 31, 2020		10,438	38,618,054
Beginning balance at Mar. 31, 2020	762,667	$ 10,438	$ 380	582,517	160,652	(1,668)	10,348
Beginning balance, shares at Mar. 31, 2020		10,438	38,383,021
Net income	9,139				9,139
Other comprehensive income (loss), net of tax	9,685						9,685
Issuance of common stock upon exercise of stock options	56			56
Issuance of common stock upon exercise of stock options, shares			5,196
Restricted stock activity			$ 1	(1)
Cash dividends declared on preferred stock	(195)				(195)
Cash dividends declared on common stock	(1,152)				(1,152)
Share-based compensation expense	735			735
Ending balance at Jun. 30, 2020	780,935	$ 10,438	$ 381	583,307	168,444	(1,668)	20,033
Ending balance, shares at Jun. 30, 2020		10,438	38,388,217
Net income	13,071				13,071
Other comprehensive income (loss), net of tax	(709)						(709)
Issuance of common stock upon exercise of stock options	1,815		$ 1	1,814
Issuance of common stock upon exercise of stock options, shares			165,375
Restricted stock activity, shares			(5,886)
Issuance of common stock in connection with employee stock purchase plan	269		$ 1	268
Issuance of common stock in connection with employee stock purchase plan, shares			21,210
Cash dividends declared on preferred stock	(196)				(196)
Cash dividends declared on common stock	(1,157)				(1,157)
Share-based compensation expense	668			668
Ending balance at Sep. 30, 2020	794,696	$ 10,438	$ 383	586,057	180,162	(1,668)	19,324
Ending balance, shares at Sep. 30, 2020		10,438	38,568,916
Net income	12,291				12,291
Other comprehensive income (loss), net of tax	(1,277)						(1,277)
Issuance of common stock upon exercise of stock options	541		$ 1	540
Issuance of common stock upon exercise of stock options, shares			49,138
Cash dividends declared on preferred stock	(196)				(196)
Cash dividends declared on common stock	(1,159)				(1,159)
Share-based compensation expense	568			568
Ending balance at Dec. 31, 2020	805,464	$ 10,438	$ 384	587,165	191,098	(1,668)	18,047
Ending balance, shares at Dec. 31, 2020		10,438	38,618,054
Net income	21,798				21,798
Other comprehensive income (loss), net of tax	(26,394)						(26,394)
Issuance of common stock upon exercise of stock options	751		$ 1	750
Issuance of common stock upon exercise of stock options, shares			55,908
Restricted stock activity	(244)					(244)
Restricted stock activity, shares			274,739
Issuance of common stock in connection with employee stock purchase plan	515			515
Issuance of common stock in connection with employee stock purchase plan, shares			25,894
Cash dividends declared on preferred stock	(196)				(196)
Cash dividends declared on common stock	(2,315)				(2,315)
Repurchase of common stock	$ (6,363)					(6,363)
Repurchase of common stock, shares	(332,744)		(332,744)
Share-based compensation expense	$ 779			779
Ending balance at Mar. 31, 2021	$ 793,795	$ 10,438	$ 385	$ 589,209	$ 210,385	$ (8,275)	$ (8,347)
Ending balance, shares at Mar. 31, 2021		10,438	38,641,851

CONDENSED CONSOLIDATED STATEM_6

CONDENSED CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS EQUITY (UNAUDITED) (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020
Statement Of Stockholders Equity [Abstract]
Dividends per share	$ 0.06	$ 0.03	$ 0.03	$ 0.03	$ 0.03

CONDENSED CONSOLIDATED STATEM_7

CONDENSED CONSOLIDATED STATEMENTS OF CASH FLOWS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Jun. 30, 2020	Mar. 31, 2020
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 21,798	$ 12,291	$ 9,139	$ 2,966
Adjustments to reconcile net income to net cash from operating activities:
PROVISION FOR LOAN AND LEASE LOSSES	4,367			14,455
Impairment loss on assets held for sale	604			715
Depreciation and amortization of premises and equipment	1,557			1,600
Net amortization of securities	2,439			850
Net change in fair value of equity securities, net	206			619
Net gains on sales of securities available-for-sale	(1,462)			(1,375)
Net losses (gains) on sales and valuation adjustments of premises and equipment	(88)			134
Net gains on sales of loans	(8,319)			(4,773)
Originations of U.S. government guaranteed loans	(95,563)			(63,256)
Proceeds from U.S. government guaranteed loans sold	88,489			53,461
Accretion of premiums and discounts on acquired loans, net	(1,968)			(3,671)
Net change in servicing assets	(98)			1,671
Net losses on sales and valuation adjustments of other real estate owned	464			381
Net amortization of other acquisition accounting adjustments	1,732			1,874
Amortization of subordinated debt issuance cost	44
Accretion of junior subordinated debentures discount	114			128
Share-based compensation expense	779			608
Deferred tax provision (benefit), net of valuation	1,705			207
Increase in cash surrender value of bank owned life insurance	(249)			(148)
Changes in assets and liabilities:
Accrued interest receivable and other assets	12,292			11,392
Accrued interest payable and other liabilities	(13,843)			8,004
Net cash provided by operating activities	15,000			25,842
CASH FLOWS FROM INVESTING ACTIVITIES
Purchases of securities available-for-sale	(487,027)			(242,685)
Proceeds from maturities and calls of securities available-for-sale	14,596			66,585
Proceeds from paydowns of securities available-for-sale	112,038			33,410
Proceeds from sales of securities available-for-sale	183,413			45,417
Proceeds from maturities and calls of securities held-to-maturity	500
Purchases of Federal Home Loan Bank stock, net	(8,550)			(2,070)
Net change in loans and leases	(117,788)			(76,141)
Purchases of premises and equipment	(477)			(2,040)
Proceeds from sales of premises and equipment	296
Proceeds from sales of assets held for sale	832
Proceeds from sales of other real estate owned	370			264
Investment in bank owned life insurance	(50,000)
Proceeds from bank owned life insurance death benefit				69
Net cash used in investing activities	(351,797)			(177,191)
CASH FLOWS FROM FINANCING ACTIVITIES
Net increase in deposits	272,526			91,278
Proceeds from short-term borrowings	4,696,000			2,836,800
Repayments of short-term borrowings	(4,601,000)			(2,741,800)
Proceeds from Paycheck Protection Program Liquidity Facility (PPPFL) advances	132,410
Repayments of PPPLF advances	(116,670)
Net increase (decrease) in securities sold under agreements to repurchase	(8,922)			6,009
Dividends paid on preferred stock	(196)			(196)
Dividends paid on common stock	(2,293)			(1,137)
Proceeds from issuance of common stock	1,024			945
Repurchases of common stock	(6,363)			(1,668)
Net cash provided by financing activities	366,516			190,231
NET INCREASE IN CASH AND CASH EQUIVALENTS	29,719			38,882
CASH AND CASH EQUIVALENTS, beginning of period	83,420		$ 119,619	80,737
CASH AND CASH EQUIVALENTS, end of period	113,139	$ 83,420		119,619
SUPPLEMENTAL DISCLOSURES OF CASH FLOW INFORMATION:
Cash paid during the period for interest	2,568			11,784
Cash paid during the period for taxes	179			51
SUPPLEMENTAL DISCLOSURES OF NON-CASH INVESTING AND FINANCING ACTIVITIES:
Common dividend declared, not paid	$ 22			$ 1,162

Basis of Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2021
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Basis of Presentation	Note 1—Basis of Presentation These unaudited interim condensed consolidated financial statements include the accounts of Byline Illinois state chartered These unaudited interim condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X as promulgated by the Securities and Exchange Commission (“SEC”). In preparing these financial statements, the Company has evaluated events and transactions subsequent to March 31, 2021 for potential recognition or disclosure. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation of the financial position and results of operations for the periods presented have been included. Certain information in footnote disclosures normally included in financial statements prepared in accordance with GAAP has been condensed or omitted pursuant to the rules and regulations of the SEC and the accounting standards for interim financial statements. These financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Consolidated Financial Statements for the years ended December 31, 2020, 2019, and 2018. In accordance with the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 855, “Subsequent Events,” the Company’s management has evaluated subsequent events for potential recognition or disclosure through the date of the issuance of these condensed consolidated financial statements. The Company has one reportable segment. The Company’s chief operating decision maker evaluates the operations of the Company using consolidated information for purposes of allocating resources and assessing performance. Therefore, segments disclosures are not required. No subsequent events were identified that would have required a change to the condensed consolidated financial statements or disclosure in the notes to the condensed consolidated financial statements. Certain prior period amounts have been reclassified to conform to current period presentation. These reclassifications did not result in any changes to previously reported net income or stockholders’ equity.

Accounting Pronouncements Recen

Accounting Pronouncements Recently Adopted or Issued	3 Months Ended
	Mar. 31, 2021
Accounting Changes And Error Corrections [Abstract]
Accounting Pronouncements Recently Adopted or Issued	Note 2—Accounting Pronouncements Recently Adopted or Issued The following reflect recent accounting pronouncements that have been adopted or are pending adoption by the Company. As the Company qualifies as an emerging growth company and has elected the extended transition period for complying with new or revised accounting pronouncements, it is not subject to new or revised accounting standards applicable to public companies during the extended transition period. The accounting pronouncements pending adoption below reflect effective dates for the Company as an emerging growth company with the extended transition period. Adopted Accounting Pronouncement Leases (Topic 842) — On January 1, 2021, the Company adopted ASU No. 2016-02 and subsequent amendments thereto, which requires the Company to recognize most leases on the balance sheet. We adopted the standard under a modified retrospective approach as of the date of adoption and elected to apply several of the available practical expedients, including: • Carry over of historical lease determination and lease classification conclusions • Carry over of historical initial direct cost balances for existing leases • Option not to recognize right-of-use assets and lease liabilities that arise from short-term leases (i.e. lease terms of twelve months or less) • Use of hindsight in determining the lease term and right-of-use assets • Accounting for lease and non-lease components in contracts in which the Company is a lessee as a single lease component Adoption of the leasing standard resulted in the recognition of operating right-of-use assets of $10.5 million and operating lease liabilities of $11.7 million as of January 1, 2021. These amounts were determined based on the present value of remaining minimum lease payments, discounted using the Company’s incremental borrowing rate as of the date of adoption. This guidance also applies to the Company’s investment in direct financing leases, which are included in loans, but did not have a material impact. There was no material impact to the timing of expense or income recognition in the Company’s Consolidated Statements of Operations. Prior periods were not restated and continue to be presented under legacy GAAP. Refer to Note 8—Leases for further details. Issued Accounting Pronouncements Pending Adoption Financial Instruments—Credit Losses (Topic 326) —In June 2016, FASB issued ASU No. 2016‑13, . Current GAAP requires an “incurred loss” methodology for recognizing credit losses that delays recognition until it is probable a loss has been incurred. The main objective of this ASU is to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity at each reporting date. The amendments in this ASU replace the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. The amendments in this ASU require a financial asset (or group of financial assets) measured at amortized cost basis to be presented at the net amount expected to be collected. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis of the financial asset(s) to present the net carrying value at the amount expected to be collected on the financial asset. The measurement of expected credit losses will be based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. The amendments in this ASU broaden the information that an entity must consider in developing its expected credit loss estimate for assets measured either collectively or individually. The use of forecasted information incorporates more timely information in the estimate of expected credit loss, which will be more useful to users of the financial statements. In November 2019, FASB issued ASU No. 2019-10, , which delays the effective date of the ASU for entities not classified as a public business entity. Assuming the Company remains an emerging growth company, the new authoritative guidance is effective for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years. The Company is in the process of implementation and determining the impact that this ASU will have on the Company’s Consolidated Financial Statements. Income Taxes (Topic 740) —In December 2019, FASB issued ASU No. 2019-12, Simplifying the Accounting for Income Taxes . The amendments in the ASU simplify the accounting for income taxes by removing the following: the exception to the incremental approach for intraperiod tax allocation when there is a loss from continuing operations and income or a gain from other items; the exception to the requirement to or not to recognize a deferred tax liability for a foreign entity when it becomes an equity method investment or it becomes a subsidiary, respectively; and the exception to the general methodology for calculating income taxes in an interim period when a year-to-date loss exceeds the anticipated loss for the year. The amendments in the ASU changes current authoritative guidance by requiring the recognition of franchise tax that is partially based on income as an income-based tax and account for any incremental amount incurred as a non-income-based tax; requiring an evaluation when a step up in the tax basis of goodwill should be considered part the of business combination; specifying that it is not required to allocate the consolidated amount of current and deferred tax expense to a legal entity that is not subject to tax in its separate financial statements; and requiring that an entity reflect the effect of an enacted change in tax laws or rates in the annual effective tax rate computation in the interim period that includes the enactment date. The amendments are effective for annual periods beginning after December 15, 2021, and interim periods within annual periods beginning after December 15, 2022. Early adoption is permitted. Assuming the Company remains an emerging growth company, the new authoritative guidance will be effective for reporting periods after January 1, 2022. The Company is currently evaluating the provisions of ASU No. 2019-12 to determine the potential impact the new standard will have on the Company’s Consolidated Financial Statements. Reference Rate Reform (Topic 848) —In March 2020, FASB issued ASU No. 2020-04, . The amendments in the ASU provide optional guidance for a limited period of time to ease the potential burden in accounting for (or recognizing the effects of) reference rate reform on financial reporting. The amendments in the ASU provide optional expedients and exceptions for applying generally accepted accounting principles to contract modifications and hedging relationships, subject to meeting certain criteria, that reference LIBOR or another reference rate expected to be discontinued. The ASU is intended to help stakeholders during the global market-wide reference rate transition period. The amendments in the ASU will be in effect for all entities as of March 12, 2020 through December 31, 2022. The Company is currently evaluating the provisions of ASU No. 2020-04 to determine the potential impact the new standard will have on the Company’s Consolidated Financial Statements.

Securities

Securities	3 Months Ended
	Mar. 31, 2021
Investments Debt And Equity Securities [Abstract]
Securities	Note 3—Securities The following March 31, 2021 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Available-for-sale U.S. Treasury Notes $ 13,475 $ 243 $ — $ 13,718 U.S. Government agencies 142,134 721 (3,270 ) 139,585 Obligations of states, municipalities, and political subdivisions 102,966 3,854 (292 ) 106,528 Residential mortgage-backed securities Agency 985,375 4,802 (19,085 ) 971,092 Non-agency 68,562 149 (761 ) 67,950 Commercial mortgage-backed securities Agency 269,997 4,009 (4,795 ) 269,211 Corporate securities 61,018 1,602 (68 ) 62,552 Asset-backed securities 45,188 83 — 45,271 Total $ 1,688,715 $ 15,463 $ (28,271 ) $ 1,675,907 March 31, 2021 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Held-to-maturity Obligations of states, municipalities, and political subdivisions $ 3,892 $ 174 $ — $ 4,066 Total $ 3,892 $ 174 $ — $ 4,066 December 31, 2020 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Available-for-sale U.S. Treasury Notes $ 23,468 $ 344 $ — $ 23,812 U.S. Government agencies 113,088 600 (137 ) 113,551 Obligations of states, municipalities, and political subdivisions 135,513 6,991 (85 ) 142,419 Residential mortgage-backed securities Agency 764,951 13,645 (205 ) 778,391 Non-agency 32,654 332 (5 ) 32,981 Commercial mortgage-backed securities Agency 244,496 6,046 (390 ) 250,152 Corporate securities 59,020 1,850 (102 ) 60,768 Asset-backed securities 45,255 26 (125 ) 45,156 Total $ 1,418,445 $ 29,834 $ (1,049 ) $ 1,447,230 December 31, 2020 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Held-to-maturity Obligations of states, municipalities, and political subdivisions $ 4,395 $ 178 $ — $ 4,573 Total $ 4,395 $ 178 $ — $ 4,573 The Company did not classify securities as trading during the three months ended March 31, 2021 or during 2020. Gross unrealized losses and fair values, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position as of March 31, 2021 and December 31, 2020, are summarized as follows: Less than 12 Months 12 Months or Longer Total March 31, 2021 # of Securities Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Available-for-sale U.S. Government agencies 13 $ 106,908 $ (3,270 ) $ — $ — $ 106,908 $ (3,270 ) Obligations of states, municipalities and political subdivisions 8 13,689 (292 ) — — 13,689 (292 ) Residential mortgage-backed securities Agency 59 781,666 (19,074 ) 439 (11 ) 782,105 (19,085 ) Non-agency 4 28,484 (761 ) — — 28,484 (761 ) Commercial mortgage-backed securities Agency 20 106,172 (4,795 ) — — 106,172 (4,795 ) Corporate securities 4 8,470 (68 ) — — 8,470 (68 ) Total 108 $ 1,045,389 $ (28,260 ) $ 439 $ (11 ) $ 1,045,828 $ (28,271 ) Less than 12 Months 12 Months or Longer Total December 31, 2020 # of Securities Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Available-for-sale U.S. Government agencies 5 $ 30,639 $ (137 ) $ — $ — $ 30,639 $ (137 ) Obligations of states, municipalities and political subdivisions 2 210 (85 ) — — 210 (85 ) Residential mortgage-backed securities Agency 8 45,253 (198 ) 472 (7 ) 45,725 (205 ) Non-agency 2 3,963 (5 ) — — 3,963 (5 ) Commercial mortgage-backed securities Agency 8 55,554 (390 ) — — 55,554 (390 ) Corporate securities 6 10,916 (102 ) — — 10,916 (102 ) Asset-backed securities 6 24,436 (99 ) 4,952 (26 ) 29,388 (125 ) Total 37 $ 170,971 $ (1,016 ) $ 5,424 $ (33 ) $ 176,395 $ (1,049 ) Certain T o available-for-sale The proceeds from all sales of securities three months ended March 31, 2021 For the Three Months Ended March 31, 2021 2020 Proceeds $ 89,301 $ 45,417 Gross gains 1,626 1,457 Gross losses 164 82 There were $1.4 million in net gains reclassified from income Securities posted as collateral were $386.7 million and $731.8 million at March 31, 2021 and December 31, 2020, respectively, of which carrying amounts of $386.7 million and $323.9 million were pledged at March 31, 2021 and December 31, 2020, At March 31, 2021, the Amortized Cost Fair Value Available-for-sale Due in one year or less $ 21,786 $ 22,111 Due from one to five years 34,665 35,947 Due from five to ten years 212,875 213,519 Due after ten years 95,455 96,077 Mortgage-backed securities 1,323,934 1,308,253 Total $ 1,688,715 $ 1,675,907 Held-to-maturity Due from one to five years 3,892 4,066 Total $ 3,892 $ 4,066

Loan and Lease Receivables

Loan and Lease Receivables	3 Months Ended
	Mar. 31, 2021
Receivables [Abstract]
Loan and Lease Receivables	Note 4—Loan Outstanding loan and lease receivables as of the dates shown were categorized as follows: March 31, December 31, 2021 2020 Commercial real estate $ 1,428,875 $ 1,416,731 Residential real estate 544,741 569,387 Construction, land development, and other land 241,809 231,602 Commercial and industrial 1,362,741 1,372,452 Paycheck Protection Program 631,170 527,044 Installment and other 1,568 1,942 Lease financing receivables 250,439 223,295 Total loans and leases 4,461,343 4,342,453 Net unamortized deferred fees and costs (10,615 ) (5,764 ) Initial direct costs 3,892 3,846 Allowance for loan and lease losses (65,590 ) (66,347 ) Net loans and leases $ 4,389,030 $ 4,274,188 March 31, December 31, 2021 2020 Lease financing receivables Net minimum lease payments $ 259,178 $ 234,472 Unguaranteed residual values 12,467 8,690 Unearned income (21,206 ) (19,867 ) Total lease financing receivables 250,439 223,295 Initial direct costs 3,892 3,846 Lease financial receivables before allowance for lease losses $ 254,331 $ 227,141 Total loans and leases consist of originated loans and leases, acquired impaired loans and acquired non-impaired loans and leases. At March 31, 2021 and December 31, 2020, total loans and leases included the guaranteed amount of U.S. government guaranteed loans of $760.6 million and $635.0 million, respectively. At March 31, 2021 and December 31, 2020, the discount on the unguaranteed portion of U.S. government guaranteed loans was $28.5 million and $28.3 million, respectively, which are included in total loans and leases. At March 31, 2021 and December 31, 2020, installment and other loans included overdraft deposits of $391,000 and $496,000, respectively, which were reclassified as loans. At March 31, 2021 and December 31, 2020, loans and leases and loans held for sale pledged as security for borrowings were $2.2 billion and $2.3 billion, respectively. The minimum Minimum Lease Payments 2021 $ 68,542 2022 77,452 2023 56,185 2024 34,356 2025 19,047 Thereafter 3,596 Total $ 259,178 Originated Topic more than insignificant having evidence of credit quality deterioration do not qualify to be accounted for as acquired impaired loans and Topic March 31, 2021 Originated Acquired Impaired Acquired Non-Impaired Total Commercial real estate $ 1,064,151 $ 96,059 $ 271,458 $ 1,431,668 Residential real estate 399,958 74,283 71,038 545,279 Construction, land development, and other land 238,122 1,992 210 240,324 Commercial and industrial 1,285,759 8,842 69,795 1,364,396 Paycheck Protection Program 617,006 — — 617,006 Installment and other 1,094 191 331 1,616 Lease financing receivables 243,399 — 10,932 254,331 Total loans and leases $ 3,849,489 $ 181,367 $ 423,764 $ 4,454,620 December 31, 2020 Originated Acquired Impaired Acquired Non-Impaired Total Commercial real estate $ 1,017,587 $ 108,484 $ 295,599 $ 1,421,670 Residential real estate 414,220 78,840 79,211 572,271 Construction, land development, and other land 226,408 4,113 212 230,733 Commercial and industrial 1,276,527 10,178 82,195 1,368,900 Paycheck Protection Program 517,815 — — 517,815 Installment and other 1,267 202 536 2,005 Lease financing receivables 214,636 — 12,505 227,141 Total loans and leases $ 3,668,460 $ 201,817 $ 470,258 $ 4,340,535 Acquired impaired loans —The unpaid principal balance and carrying amount of all acquired impaired loans are summarized below. The balances do not include an allowance for loan and lease losses of $4.2 million and $6.5 million, at March 31, 2021 and December 31, 2020, respectively. March 31, 2021 December 31, 2020 Unpaid Principal Balance Carrying Value Unpaid Principal Balance Carrying Value Commercial real estate $ 138,823 $ 96,059 $ 154,233 $ 108,484 Residential real estate 121,084 74,283 126,086 78,840 Construction, land development, and other land 9,581 1,992 12,677 4,113 Commercial and industrial 14,050 8,842 15,925 10,178 Installment and other 890 191 917 202 Total acquired impaired loans $ 284,428 $ 181,367 $ 309,838 $ 201,817 The following table summarizes the changes in accretable yield for acquired impaired loans for the three months ended March 31, 2021 and 2020: Three Months Ended March 31, 2021 2020 Beginning balance $ 27,696 $ 40,009 Accretion to interest income (3,707 ) (5,205 ) Reclassification from nonaccretable difference, net 1,273 2,233 Ending balance $ 25,262 $ 37,037 Acquired non-impaired loans and leases — The unpaid principal balance and carrying value for acquired non-impaired loans and leases at March 31, 2021 and December 31, 2020 were as follows: March 31, 2021 December 31, 2020 Unpaid Principal Balance Carrying Value Unpaid Principal Balance Carrying Value Commercial real estate $ 277,282 $ 271,458 $ 302,091 $ 295,599 Residential real estate 71,838 71,038 80,104 79,211 Construction, land development, and other land 276 210 278 212 Commercial and industrial 72,122 69,795 84,608 82,195 Installment and other 344 331 553 536 Lease financing receivables 12,301 10,932 13,978 12,505 Total acquired non-impaired loans and leases $ 434,163 $ 423,764 $ 481,612 $ 470,258

Allowance for Loan and Lease Lo

Allowance for Loan and Lease Losses and Reserve for Unfunded Commitments	3 Months Ended
	Mar. 31, 2021
Receivables [Abstract]
Allowance for Loan and Leases and Reserve for Unfunded Commitments	Note 5—Allowance for Loans and leases The following March 31, 2021 Commercial Real Estate Residential Real Estate Construction, Land Development, and Other Land Commercial and Industrial Paycheck Protection Program Installment and Other Lease Financing Receivables Total Allowance for loan and lease losses Three months ended Beginning balance $ 19,584 $ 2,400 $ 1,352 $ 41,183 $ — $ 15 $ 1,813 $ 66,347 Provisions (release) 2,606 (302 ) (241 ) 1,947 — (3 ) 360 4,367 Charge-offs (1,877 ) (11 ) (326 ) (2,888 ) — — (364 ) (5,466 ) Recoveries 185 4 — 60 — — 93 342 Ending balance $ 20,498 $ 2,091 $ 785 $ 40,302 $ — $ 12 $ 1,902 $ 65,590 Ending balance: Individually evaluated for impairment $ 7,409 $ 101 $ — $ 18,824 $ — $ — $ — $ 26,334 Collectively evaluated for impairment 10,881 1,460 780 20,066 — 12 1,902 35,101 Loans acquired with deteriorated credit quality 2,208 530 5 1,412 — — — 4,155 Total allowance for loan and lease losses $ 20,498 $ 2,091 $ 785 $ 40,302 $ — $ 12 $ 1,902 $ 65,590 March 31, 2021 Commercial Real Estate Residential Real Estate Construction, Land Development, and Other Land Commercial and Industrial Paycheck Protection Program Installment and Other Lease Financing Receivables Total Loans and leases ending balance: Individually evaluated for impairment $ 54,421 $ 1,709 $ — $ 43,306 $ — $ — $ — $ 99,436 Collectively evaluated for impairment 1,281,188 469,287 238,332 1,312,248 617,006 1,425 254,331 4,173,817 Loans acquired with deteriorated credit quality 96,059 74,283 1,992 8,842 — 191 — 181,367 Total loans and leases $ 1,431,668 $ 545,279 $ 240,324 $ 1,364,396 $ 617,006 $ 1,616 $ 254,331 $ 4,454,620 March 31, 2020 Commercial Real Estate Residential Real Estate Construction, Land Development, and Other Land Commercial and Industrial Installment and Other Lease Financing Receivables Total Allowance for loan and lease losses Three months ended Beginning balance $ 7,965 $ 1,990 $ 610 $ 19,377 $ 50 $ 1,944 $ 31,936 Provisions 4,422 784 394 8,546 3 306 14,455 Charge-offs (552 ) (5 ) — (3,958 ) — (457 ) (4,972 ) Recoveries 16 9 — 174 — 222 421 Ending balance $ 11,851 $ 2,778 $ 1,004 $ 24,139 $ 53 $ 2,015 $ 41,840 Ending balance: Individually evaluated for impairment $ 3,634 $ 92 $ — $ 9,709 $ — $ — $ 13,435 Collectively evaluated for impairment 6,115 1,685 915 13,320 53 2,015 24,103 Loans acquired with deteriorated credit quality 2,102 1,001 89 1,110 — — 4,302 Total allowance for loan and lease losses $ 11,851 $ 2,778 $ 1,004 $ 24,139 $ 53 $ 2,015 $ 41,840 March 31, 2020 Commercial Real Estate Residential Real Estate Construction, Land Development, and Other Land Commercial and Industrial Installment and Other Lease Financing Receivables Total Loans and leases ending balance: Individually evaluated for impairment $ 32,974 $ 1,960 $ 2,577 $ 43,926 $ — $ — $ 81,437 Collectively evaluated for impairment 1,134,090 597,839 269,908 1,354,825 5,485 173,247 3,535,394 Loans acquired with deteriorated credit quality 127,895 94,198 5,291 15,808 236 — 243,428 Total loans and leases $ 1,294,959 $ 693,997 $ 277,776 $ 1,414,559 $ 5,721 $ 173,247 $ 3,860,259 The Company decreased the allowance for loan and lease losses by $757,000 for the three months ended March 31, 2021 and increased it by $9.9 million for the three months ended March 31, 2020. For acquired impaired loans, the Company decreased the allowance for loan and lease losses by $2.3 million and increased the allowance for loan and lease losses by $1.5 million for the three months ended March 31, 2021, and 2020 respectively. For loans individually evaluated for impairment, the Company increased the allowance for loan and lease losses by $2.4 million for the three months ended March 31, 2021, and by $2.7 million for the three months ended March 31, 2020. For loans collectively evaluated for impairment, the Company decreased the allowance for loan and lease losses by $824,000 for the three months ended March 31, 2021, and increased the allowance for loan and lease losses by $5.6 million for the three months ended March 31, 2020, respectively. An allowance for loan and lease loss allocation has not been made for Paycheck Protection Program (“PPP”) loans as the loans have a 100% SBA guarantee. On a quarterly basis, the Company assesses the collectability of its government guarantee using historical experience. The following and March 31, 2021 Recorded Investment Unpaid Principal Balance Related Allowance With no related allowance recorded Commercial real estate $ 28,685 $ 30,853 $ — Residential real estate 1,496 1,609 — Commercial and industrial 13,585 16,218 — With an allowance recorded Commercial real estate 25,736 27,275 7,409 Residential real estate 213 215 101 Commercial and industrial 29,721 32,389 18,824 Total impaired loans $ 99,436 $ 108,559 $ 26,334 December 31, 2020 Recorded Investment Unpaid Principal Balance Related Allowance With no related allowance recorded Commercial real estate $ 32,473 $ 34,792 $ — Residential real estate 1,558 1,644 — Commercial and industrial 17,944 19,917 — With an allowance recorded Commercial real estate 13,696 14,919 5,034 Residential real estate 272 274 78 Commercial and industrial 29,412 32,018 18,848 Total impaired loans $ 95,355 $ 103,564 $ 23,960 The following tables summarize the average recorded investment and interest income recognized for loans and leases considered impaired, which excludes acquired impaired loans, for the three months ended: March 31, 2021 Average Recorded Investment Interest Income Recognized With no related allowance recorded Commercial real estate $ 34,961 $ 311 Residential real estate 3,080 18 Commercial and industrial 16,568 129 With an allowance recorded Commercial real estate 22,178 161 Residential real estate 298 2 Commercial and industrial 31,089 273 Total impaired loans $ 108,174 $ 894 March 31, 2020 Average Recorded Investment Interest Income Recognized With no related allowance recorded Commercial real estate $ 18,728 $ 277 Residential real estate 1,221 — Construction, land development, and other land 2,836 20 Commercial and industrial 14,368 105 With an allowance recorded Commercial real estate 13,177 136 Residential real estate 771 14 Commercial and industrial 24,668 441 Total impaired loans $ 75,769 $ 993 The following March 31, 2021 Commercial Real Estate Residential Real Estate Construction, Land Development, and Other Land Commercial and Industrial Paycheck Protection Program Installment and Other Lease Financing Receivables Total Pass $ 1,088,465 $ 444,196 $ 192,326 $ 1,074,221 $ 617,006 $ 1,333 $ 250,166 $ 3,667,713 Watch 142,956 22,937 46,006 195,166 — 92 45 407,202 Special Mention 49,714 1,702 — 41,025 — — 2,370 94,811 Substandard 54,474 2,161 — 45,142 — — 1,282 103,059 Doubtful — — — — — — 468 468 Loss — — — — — — — — Total $ 1,335,609 $ 470,996 $ 238,332 $ 1,355,554 $ 617,006 $ 1,425 $ 254,331 $ 4,273,253 December 31, 2020 Commercial Real Estate Residential Real Estate Construction, Land Development, and Other Land Commercial and Industrial Paycheck Protection Program Installment and Other Lease Financing Receivables Total Pass $ 1,064,623 $ 463,103 $ 180,458 $ 1,027,399 $ 517,815 $ 1,706 $ 222,818 $ 3,477,922 Watch 134,381 22,086 46,162 225,930 — 96 47 428,702 Special Mention 60,022 3,795 — 56,784 — — 2,721 123,322 Substandard 54,160 4,447 — 48,609 — 1 955 108,172 Doubtful — — — — — — 600 600 Loss — — — — — — — — Total $ 1,313,186 $ 493,431 $ 226,620 $ 1,358,722 $ 517,815 $ 1,803 $ 227,141 $ 4,138,718 The following tables summarize contractual delinquency information for acquired non-impaired and originated loans and leases by category at March 31, 2021 and December 31, 2020: March 31, 2021 30-59 Days Past Due 60-89 Days Past Due Greater than 90 Days and Accruing Non- accrual Total Past Due Current Total Commercial real estate $ 17,629 $ — $ — $ 16,198 $ 33,827 $ 1,301,782 $ 1,335,609 Residential real estate 1,310 1,000 — 2,078 4,388 466,608 470,996 Construction, land development, and other land 1,760 — — — 1,760 236,572 238,332 Commercial and industrial 3,076 588 — 17,565 21,229 1,334,325 1,355,554 Paycheck Protection Program — — — — — 617,006 617,006 Installment and other — — — — — 1,425 1,425 Lease financing receivables 1,859 521 — 1,243 3,623 250,708 254,331 Total $ 25,634 $ 2,109 $ — $ 37,084 $ 64,827 $ 4,208,426 $ 4,273,253 December 31, 2020 30-59 Days Past Due 60-89 Days Past Due Greater than 90 Days and Accruing Non- accrual Total Past Due Current Total Commercial real estate $ 1,544 $ 4,194 $ — $ 15,969 $ 21,707 $ 1,291,479 $ 1,313,186 Residential real estate 1,686 — — 1,929 3,615 489,816 493,431 Construction, land development, and other land — — — — — 226,620 226,620 Commercial and industrial 4,521 1,290 — 21,936 27,747 1,330,975 1,358,722 Paycheck Protection Program — — — — — 517,815 517,815 Installment and other 6 — — 1 7 1,796 1,803 Lease financing receivables 996 376 — 1,268 2,640 224,501 227,141 Total $ 8,753 $ 5,860 $ — $ 41,103 $ 55,716 $ 4,083,002 $ 4,138,718 Trouble debt restructurings (“TDRs”) are granted due to borrower financial difficulty and provide for a modification of loan repayment terms. TDRs are treated in the same manner as impaired loans for purposes of calculating the allowance for loan and lease losses. The tables below present TDRs by loan category as of March 31, 2021 and December 31, 2020: March 31, 2021 Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Charge-offs Specific Reserves Accruing: Commercial real estate 9 $ 2,425 $ 2,425 $ — $ 205 Commercial and industrial 1 74 74 — 74 Residential real estate 3 220 220 — — Total accruing 13 2,719 2,719 — 279 Non-accruing: Commercial real estate 5 2,274 1,911 363 414 Commercial and industrial 10 3,837 3,674 163 1,750 Total non-accruing 15 6,111 5,585 526 2,164 Total troubled debt restructurings 28 $ 8,830 $ 8,304 $ 526 $ 2,443 December 31, 2020 Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Charge-offs Specific Reserves Accruing: Commercial real estate 8 $ 2,187 $ 2,187 $ — $ 104 Commercial and industrial 1 78 78 — 78 Residential real estate 3 230 230 — — Total accruing 12 2,495 2,495 — 182 Non-accruing: Commercial real estate 4 1,609 1,362 247 102 Commercial and industrial 14 4,420 4,288 132 3,157 Total non-accruing 18 6,029 5,650 379 3,259 Total troubled debt restructurings 30 $ 8,524 $ 8,145 $ 379 $ 3,441 In addition, Loans modified and 2020 were: Three Months Ended March 31, 2021 2020 Accruing: Beginning balance $ 2,495 $ 1,771 Additions 281 — Net payments (57 ) (46 ) Net transfers from non-accrual — — Ending balance 2,719 1,725 Non-accruing: Beginning balance 5,650 8,800 Additions 673 4,258 Net payments (343 ) (941 ) Charge-offs (395 ) — Net transfers to accrual — — Ending balance 5,585 12,117 Total troubled debt restructurings $ 8,304 $ 13,842 There were At March 31, 2021 and December 31, 2020, the uring the , there was a

Servicing Assets

Servicing Assets	3 Months Ended
	Mar. 31, 2021
Transfers And Servicing [Abstract]
Servicing Assets	Note 6—Servicing Activity for the three months ended March 31, 2021 and 2020 was Three Months Ended March 31, 2021 2020 Beginning balance $ 22,042 $ 19,471 Additions, net 1,603 1,393 Changes in fair value (1,505 ) (3,064 ) Ending balance $ 22,140 $ 17,800 Loans serviced as of and were as follows: March 31, December 31, 2021 2020 Loan portfolios serviced for: SBA guaranteed loans $ 1,422,478 $ 1,395,713 USDA guaranteed loans 146,512 135,543 Total $ 1,568,990 $ 1,531,256 Loan servicing revenue totaled $2.8 million for each of the three months ended March 31, 2021 and 2020, respectively. Loan servicing asset revaluation, which represents the changes in fair value of servicing assets, resulted in a downward valuation of $1.5 million and $3.1 million for three months ended March 31, 2021 and 2020, respectively. The fair Generally, as interest rates rise on variable rate loans, loan prepayments increase due to an increase in refinance activity, which may result in a decrease in the fair value of servicing assets. Measurement of fair value is limited to the conditions existing and the assumptions used as of a particular point in time, and those assumptions may change over time. Refer to Note 15—Fair Value Measurement for further details.

Other Real Estate Owned

Other Real Estate Owned	3 Months Ended
	Mar. 31, 2021
Real Estate [Abstract]
Other Real Estate Owned	Note 7—Other Real Estate Owned The following table presents the change in other real estate owned (“OREO”) for the three months ended March 31, 2021 Three Months Ended March 31, 2021 2020 Beginning balance $ 6,350 $ 9,896 Net additions to OREO 436 22 Proceeds from sales of OREO (370 ) (264 ) Gains on sales of OREO 28 82 Valuation adjustments (492 ) (463 ) Ending balance $ 5,952 $ 9,273 At March 31, 2021 and December 31, 2020, the balance of real estate owned included no foreclosed residential real estate properties recorded as a result of obtaining physical possession of the property. At March 31, 2021 and December 31, 2020, the recorded investment of consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings were in process was $2.9 million and $3.3 million, respectively. There were no internally financed sales of OREO for the three months ended March 31, 2021 or 2020.

Leases

Leases	3 Months Ended
	Mar. 31, 2021
Leases [Abstract]
Leases	Note 8—Leases The Company enters into leases in the normal course of business primarily for its banking facilities and branches. The Company’s operating leases have varying maturity dates through year end 2042, some of which include renewal or termination options to extend the lease. In addition, the Company leases or subleases real estate to third parties. The Company includes lease extension and termination options in the lease term if, after considering relevant economic factors, it is reasonably certain the Company will exercise the option. In addition, the Company has elected to account for any non-lease components in its real estate leases as part of the associated lease component. The Company has also elected not to recognize leases with original lease terms of 12 months or less (short-term leases) on the Company’s balance sheet. Leases are classified at the lease commencement date. Lease expense for operating leases and short-term leases is recognized on a straight-line basis over the lease term. Right-of-use assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Right-of-use assets and lease liabilities are recognized at the lease commencement date based on the estimated present value of lease payments over the lease term. The following table summarizes the amount and balance sheet line item for our operating lease right-of-use asset and liability as of March 31, 2021: Balance Sheet Line Item March 31, 2021 Operating lease right-of-use asset Accrued interest receivable and other assets $ 9,672 Operating lease liability Accrued interest payable and other liabilities 12,273 The Company uses its incremental borrowing rate at lease commencement to calculate the present value of lease payments when the rate implicit in a lease is not known. The Company’s incremental borrowing rate is based on the FHLB regular advance rate, adjusted for the lease term and other factors. At March 31, 2021, the weighted-average discount rate of operating leases was 0.76% and the weighted average remaining life of operating leases was 6.1 years. The future minimum lease payments Operating Lease Commitments 2021 $ 2,958 2022 3,024 2023 1,731 2024 1,490 2025 777 Thereafter 2,865 Total undiscounted lease payments 12,845 Less: imputed interest (572 ) Net lease liabilities $ 12,273 The Company’s

Goodwill, Core Deposit Intangib

Goodwill, Core Deposit Intangible and Other Intangible Assets	3 Months Ended
	Mar. 31, 2021
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill, Core Deposit Intangible and Other Intangible Assets	Note 9—Goodwill, Core Deposit Intangible and Other Intangible Assets The following tables summarize the changes in the Company’s goodwill, core deposit intangible assets, and customer relationship intangible assets for the three months ended March 31, 2021 and 2020: For the Three Months Ended March 31, 2021 2020 Goodwill Core Intangible Customer Relationship Intangible Goodwill Core Intangible Customer Relationship Intangible Beginning balance $ 148,353 $ 21,809 $ 2,469 $ 148,353 $ 29,111 $ 2,791 Amortization — (1,683 ) (66 ) — (1,826 ) (67 ) Ending balance $ 148,353 $ 20,126 $ 2,403 $ 148,353 $ 27,285 $ 2,724 Accumulated amortization N/A $ 33,340 $ 813 N/A $ 28,181 $ 492 Weighted average remaining amortization period N/A 5.4 Years 9.0 Years N/A 6.3 Years 10.2 Years The following table presents the estimated amortization expense for core deposit intangible and customer relationship intangible assets remaining at March 31, 2021: Estimated Amortization 2021 $ 5,249 2022 6,426 2023 4,371 2024 2,286 2025 1,721 Thereafter 2,476 Total $ 22,529

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Note 10—Income The Company uses an estimated annual effective tax rate method in computing its interim tax provision. This effective tax rate is based on forecasted annual pre-tax income, permanent tax differences and statutory tax rates. The effective tax rate for the three months ended March 31, 2021 and 2020 was 25.3% and 26.1%, respectively. The Company recorded discrete income tax benefit of $28,000 and $69,000 related to the exercise of stock options and vesting of restricted shares for the three months ended March 31, 2021 and 2020, respectively. N et deferred tax assets increased to $48.7 million at compared to $40.2 million at . The net increase in the total net deferred tax .

Deposits

Deposits	3 Months Ended
	Mar. 31, 2021
Deposits [Abstract]
Deposits	Note 11—Deposits The composition of deposits was as follows as of March 31, 2021 and December 31, 2020: March 31, December 31, 2021 2020 Non-interest-bearing demand deposits $ 2,015,643 $ 1,762,676 Interest-bearing checking accounts 567,660 494,424 Money market demand accounts 1,075,330 1,142,709 Other savings 600,725 564,700 Time deposits (below $250,000) 579,682 600,810 Time deposits ($250,000 and above) 185,500 186,712 Total deposits $ 5,024,540 $ 4,752,031 Time deposits of $250,000 or more included $35.4 million and $35.0 million of brokered deposits at March 31, 2021 and December 31, 2020, respectively.

Other Borrowings

Other Borrowings	3 Months Ended
	Mar. 31, 2021
Debt Disclosure [Abstract]
Other Borrowings	Note 12—Other Borrowings The following is a summary of the Company’s other borrowings as of March 31, 2021 and December 31, 2020: March 31, December 31, 2021 2020 Paycheck Protection Program Liquidity Facility $ 387,647 $ 371,907 Federal Home Loan Bank advances 329,000 234,000 Securities sold under agreements to repurchase 33,072 41,994 Line of credit — — Total $ 749,719 $ 647,901 On April 21, 2020, the Bank entered into a Letter Agreement with the Federal Reserve Bank of Chicago that allows the Bank to access the Paycheck Protection Program Liquidity Facility (the “PPPLF”). Under the terms of the PPPLF, the Bank will pledge loans originated under the PPP to the Federal Reserve Bank of Chicago as collateral for available advances under the PPPLF. Advances under the PPPLF will be an amount equal to the aggregate principal amount of PPP loans pledged by Byline Bank, carry an interest rate of 35 basis points and mature on the maturity date of the PPP loans pledged as collateral for the advance. As of March 31, 2021, the PPPLF balance was $387.6 million with an interest rate of 0.35% with various maturity dates from April 2022 to January 2026. Byline Bank has the capacity to borrow funds from the discount window of the Federal Reserve System. As of March 31, 2021 and December 31, 2020, there were no outstanding advances under the Federal Reserve Bank discount window line. At March 31, 2021, fixed-rate Federal Home Loan Bank (“FHLB”) advances totaled $329.0 million, with interest rates ranging from 0.00% to 0.22% and maturities ranging from April 2021 to May 2021. Required investment in FHLB stock is $4.50 for every $100 in advances. Securities On The Company hedges The following March 31, December 31, 2021 2020 Federal Home Loan Bank line $ 1,883,967 $ 2,016,212 Federal Reserve Bank of Chicago discount window line 885,510 874,677 Available federal funds lines 115,000 115,000

Subordinated Notes and Junior S

Subordinated Notes and Junior Subordinated Debentures	3 Months Ended
	Mar. 31, 2021
Debt Disclosure [Abstract]
Subordinated Notes and Junior Subordinated Debentures	Note 13—Subordinated Notes and Junior Subordinated Debentures In 2020, the Company issued $75.0 million in fixed-to-floating subordinated notes that mature on July 1, 2030. The subordinated notes bear a fixed interest rate of 6.00% until July 1, 2025 and a floating interest rate equal to a benchmark rate, which is expected to be three-month Secured Overnight Financing Rate plus 588 basis points thereafter until maturity. The transaction resulted in debt issuance costs of approximately $1.7 million that will be amortized over 10 years. As of March 31, 2021, the net liability outstanding of the subordinated notes was $73.4 million At March 31, 2021 and December 31, 2020, the Name of Trust Aggregate Principal Amount March 31, 2021 Aggregate Principal Amount December 31, 2020 Stated Maturity Contractual Rate at March 31, 2021 Interest Rate Spread Metropolitan $ 35,000 $ 35,000 March 2.97 % Three-month LIBOR + 2.79% First Evanston Bancorp Trust I 10,000 10,000 March 15, 2035 1.96 % Three-month LIBOR + 1.78% Total liability, at par 45,000 45,000 Discount (8,435 ) (8,549 ) Total liability, at carrying value $ 36,565 $ 36,451 In 2004, the As part of the First Evanston acquisition, the Company assumed the obligations to First Evanston Bancorp Trust I of $10.0 million in principal amount, which was formed for the issuance of trust preferred securities. Beginning on March 15, 2010, the interest rate reset to the three-month LIBOR plus 1.78% (1.96% and 2.00% at March 31, 2021 and December 31, 2020, respectively), which is in effect until the debentures mature in 2035. Interest is paid on a quarterly basis. The Company has the right to redeem the debentures, in whole or in part, on any interest payment date on or after March 2010. The Company has the option to defer interest payments on the debentures from time to time for a period not to exceed five consecutive years. Accrued The Trusts

Commitments and Contingent Liab

Commitments and Contingent Liabilities	3 Months Ended
	Mar. 31, 2021
Commitments And Contingencies Disclosure [Abstract]
Commitments and Contingent Liabilities	Note 14—Commitments Legal —I n th e ordinar y cours e o f business , th e Compan y an d Ban k hav e various outstandin g commitment s an d contingen t liabilitie s tha t ar e no t recognize d i n th e accompanyin g consolidated financia l statements . I n addition , th e Compan y ma y b e a defendan t i n certai n claim s an d lega l action s arisin g i n the ordinar y cours e o f business . I n th e opinio n o f management , afte r consultatio n wit h lega l counsel , th e ultimate dispositio n o f thes e matter s i s currentl y no t expecte d t o hav e a materia l advers e effec t o n th e Company’s Consolidated Financial Statements. Operating s —Refer to Note 8—Lease for discussion of operating lease commitments. Commitments t —The Company is party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit and standby letters of credit. Those instruments involve, to varying degrees, elements of credit and interest rate risk in excess of the amount recognized in the Consolidated Statements of Financial Condition. The contractual or notional amounts of those instruments reflect the extent of involvement the Company has in particular classes of financial instruments. The Company’s exposure The following March 31, 2021 December 31, 2020 Fixed Rate Variable Total Fixed Variable Total Commitments to extend credit $ 124,817 $ 1,380,797 $ 1,505,614 $ 106,183 $ 1,261,872 $ 1,368,055 Letters of credit 652 58,974 59,626 652 58,120 58,772 Total $ 125,469 $ 1,439,771 $ 1,565,240 $ 106,835 $ 1,319,992 $ 1,426,827 Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. Since many of the commitments are expected to expire without being drawn upon, the total commitment amount does not necessarily represent future cash requirements. The Company evaluates each customer’s creditworthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Company upon extension of credit, is based on management’s credit evaluation of the counterparty. Collateral is primarily obtained in the form of commercial and residential real estate (including income producing commercial properties). Letters Commitments

Fair Value Measurement

Fair Value Measurement	3 Months Ended
	Mar. 31, 2021
Fair Value Disclosures [Abstract]
Fair Value Measurement	Note 15—Fair Value Measurement Fair These types Level 1 —Quoted prices in active markets for identical assets or liabilities. Level 2 —Quoted prices for similar instruments in active markets, quoted prices for identical or similar instruments in markets that are not active and model-derived valuations whose inputs are observable or whose significant value drivers are observable. Level 3 —Unobservable inputs that are supported by little or no market activity and that are significant to the fair value of the asset or liability. Unobservable inputs are used to measure fair value to the extent that observable inputs are not available. The Company’s own data used to develop unobservable inputs may be adjusted for market considerations when reasonably available. The The Company used the Securities e —The Company obtains fair value measurements from an independent pricing service. Management reviews the procedures used by the third party, including significant inputs used in the fair value calculations. The fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, trade execution data, market consensus prepayment speeds, credit information and the bond’s terms and conditions, among other things. When market quotes are not readily accessible or available, alternative approaches are utilized, such as matrix or model pricing. The Company’s methodology for pricing non-rated bonds focuses on three distinct inputs: equivalent rating, yield and other pricing terms. To determine the rating for a given non-rated municipal bond, the Company references a publicly issued bond by the same issuer if available as well as other additional key metrics to support the credit worthiness. Typically, pricing for these types of bonds would require a higher yield than a similar rated bond from the same issuer. A reduction in price is applied to the rating obtained from the comparable bond, as the Company believes if liquidated, a non-rated bond would be valued less than a similar bond with a verifiable rating. The reduction applied by the Company is one notch lower (i.e. a “AA” rating for a comparable bond would be reduced to “AA-” for the Company’s valuation). In 2021 and 2020, all of the ratings derived by the Company were “BBB” or better with and without comparable bond proxies. The fair value measurement of municipal bonds is sensitive to the rating input, as a higher rating typically results in an increased valuation. The remaining pricing inputs used in the bond valuation are observable. Based on the rating determined, the Company obtains a corresponding current market yield curve available to market participants. Other terms including coupon, maturity date, redemption price, number of coupon payments per year, and accrual method are obtained from the individual bond term sheets. Equity and other securities —The Company utilizes the same fair value measurement methodology for equity and other securities as detailed in the securities available-sale portfolio above. Servicing s —Fair value is based on a loan-by-loan basis taking into consideration the original term to maturity, the current age of the loan and the remaining term to maturity. The valuation methodology utilized for the servicing assets begins with generating estimated future cash flows for each servicing asset, based on their unique characteristics and market-based assumptions for prepayment speeds and costs to service. The present value of the future cash flows are then calculated utilizing market-based discount rate assumptions. Derivative s —Interest rate derivatives are valued by a third party, using models that primarily use market observable inputs, such as yield curves, and are validated by comparison with valuations provided by the respective counterparties. Derivative financial instruments are included in other assets and other liabilities in the Consolidated Statements of Financial Condition. The following Fair Value Measurements Using March 31, 2021 Fair Value Level 1 Level 2 Level 3 Financial assets Securities available-for-sale U.S. Treasury Notes $ 13,718 $ 13,718 $ — $ — U.S. Government agencies 139,585 — 139,585 — Obligations of states, municipalities, and political subdivisions 106,528 — 106,528 — Mortgage-backed securities; residential Agency 971,092 — 971,092 — Non-Agency 67,950 — 67,950 — Mortgage-backed securities; commercial Agency 269,211 — 269,211 — Corporate securities 62,552 — 62,552 — Asset-backed securities 45,271 — 45,271 — Equity and other securities, at fair value Mutual funds 2,939 2,939 — — Equity securities 5,618 — 4,932 686 Servicing assets 22,140 — — 22,140 Derivative assets 16,949 — 16,949 — Financial liabilities Derivative liabilities 12,380 — 12,380 — Fair Value Measurements Using December 31, 2020 Fair Value Level 1 Level 2 Level 3 Financial assets Securities available-for-sale U.S. Treasury Notes $ 23,812 $ 23,812 $ — $ — U.S. Government agencies 113,551 — 113,551 — Obligations of states, municipalities, and political subdivisions 142,419 — 142,419 Mortgage-backed securities; residential Agency 778,391 — 778,391 — Non-Agency 32,981 — 32,981 — Mortgage-backed securities; commercial Agency 250,152 — 250,152 — Corporate securities 60,768 — 60,768 — Asset-backed securities 45,156 — 45,156 — Equity and other securities, at fair value Mutual funds 2,983 2,983 — — Equity securities 5,781 — 5,096 685 Servicing assets 22,042 — — 22,042 Derivative assets 17,149 — 17,149 — Financial liabilities Derivative liabilities 18,133 — 18,133 — The Company did not have any transfers The following table presents additional information about financial assets measured at fair value on recurring basis for which the Company used significant unobservable inputs (Level 3): Three Months Ended March 31, 2021 2020 2021 2020 Investment Securities Servicing Assets Balance, beginning of period $ 685 $ 700 $ 22,042 $ 19,471 Additions, net — — 1,603 1,393 Change in fair value 1 (20 ) (1,505 ) (3,064 ) Balance, end of period $ 686 $ 680 $ 22,140 $ 17,800 The following Financial Instruments Valuation Technique Unobservable Inputs Range of Inputs Weighted Average Range Impact to Valuation from an Increased or Higher Input Value Single issuer trust preferred Discounted cash flow Discount rate 3.2% - 6.4% 4.6 % Decrease Servicing assets Discounted cash flow Prepayment speeds 0.1% - 31.6% 15.1 % Decrease Discount rate 0.7% - 49.9% 9.9 % Decrease Expected weighted average loan life 0.3 - 8.6 years 3.7 years Increase The Company used the Impaired ) —Impaired loans, other than those existing on the date of a business acquisition, are primarily carried at the fair value of the underlying collateral, less estimated costs to sell, if the loan is collateral dependent. Valuations of impaired loans that are collateral dependent are supported by third party appraisals in accordance with the Bank’s credit policy. Other valuation methods include analysis of discounted cash flows, which measures the present value of expected future cash flows discounted at the loan’s effective interest rate. Impaired loans that are not collateral dependent are not material. Assets e —Assets held for sale consist of former branch locations and real estate previously purchased for expansion. Assets are considered held for sale when management has approved to sell the assets following a branch closure or other events. The properties are being actively marketed and transferred to assets held for sale based on the lower of carrying value or its fair value, less estimated costs to sell. The Company records assets held for sale on the Consolidated Statements of Financial Condition within accrued interest receivable and other assets. Other d —Certain assets held within other real estate owned represent real estate or other collateral that has been adjusted to its estimated fair value, less cost to sell, as a result of transferring from the loan portfolio at the time of foreclosure or repossession and based on management’s periodic impairment evaluation. From time to time, non-recurring fair value adjustments to other real estate owned are recorded to reflect partial write-downs based on an observable market price or current appraised value of property. Adjustments to fair value based on such non-recurring transactions generally result from the application of lower-of-cost-or-market accounting or write-downs of individual assets due to impairment. The following tables summarize the Company’s assets that were measured at fair value on a non-recurring basis, excluding acquired impaired loans, as of March 31, 2021 and December 31, 2020 : Fair Value Measurements Using March 31, 2021 Fair Value Level 1 Level 2 Level 3 Non-recurring Impaired loans (excluding acquired impaired loans) Commercial real estate $ 47,012 $ — $ — $ 47,012 Residential real estate 1,608 — — 1,608 Commercial and industrial 24,482 — — 24,482 Assets held for sale 11,845 — — 11,845 Other real estate owned 5,952 — — 5,952 Fair Value Measurements Using December 31, 2020 Fair Value Level 1 Level 2 Level 3 Non-recurring Impaired loans (excluding acquired impaired loans) Commercial real estate $ 41,135 $ — $ — $ 41,135 Residential real estate 1,752 — — 1,752 Commercial and industrial 28,508 — — 28,508 Assets held for sale 13,023 — — 13,023 Other real estate owned 6,350 — — 6,350 The following Cash and cash equivalent s —For these short-term instruments, the carrying amount is a reasonable estimate of fair value. Securities y —The Company obtains fair value measurements from an independent pricing service. Management reviews the procedures used by the third party, including significant inputs used in the fair value calculations. The fair value measurements consider observable data that may include dealer quotes, market spreads, cash flows, the U.S. Treasury yield curve, live trading levels, trade execution data, market consensus prepayment speeds, credit information and the bond’s terms and conditions, among other things. When market quotes are not readily accessible or available, alternative approaches are utilized, such as matrix or model pricing. Restricted k —The fair value has been determined to approximate cost. Loans held for — The fair value of loans held for sale are based on quoted market prices, where available, and determined by discounted estimated cash flows using interest rates approximating the Company’s current origination rates for similar loans adjusted to reflect the inherent credit risk. Loan —For certain variable rate loans that reprice frequently and with no significant changes in credit risk, fair value is estimated at carrying value. The fair value of other types of loans is estimated using an exit price notion. It is estimated by discounting future cash flows, using current rates at which similar loans would be made to borrowers with similar credit ratings and for the same remaining maturities. Deposits —The fair value of demand deposits, savings accounts, and certain money market deposits is the amount payable on demand at the reporting date. The fair value of fixed-maturity certificates of deposit is estimated by discounting future cash flows, using rates currently offered for deposits of similar remaining maturities. Paycheck Protection Program Liquidity Facility —The carrying amount approximates fair value. Federal Home Loan Bank advances —The fair value of FHLB advances is estimated by discounting the agreements based on maturities using rates currently offered for FHLB advances of similar remaining maturities adjusted for prepayment penalties that would be incurred if the borrowings were paid off on the measurement date. Securities e —The carrying amount approximates fair value due to maturities of less than ninety days. Subordinated notes —The fair value is based on available market prices. Junior subordinated debenture s —The fair value of junior subordinated debentures, in the form of trust preferred securities, is determined using rates currently available to the Company for debt with similar terms and remaining maturities. Accrued interest —The carrying amount approximates fair value. Commitments t —The fair values of these off-balance sheet commitments to extend credit and commercial and letters of credit are not considered practicable to estimate because of the lack of quoted market prices and the inability to estimate fair value without incurring excessive costs. The estimated not carried at fair value March 31, December 31, Fair Value 2021 2020 Hierarchy Level Carrying Amount Estimated Fair Value Carrying Amount Estimated Fair Value Financial assets Cash and due from banks 1 $ 47,101 $ 47,101 $ 41,432 $ 41,432 Interest bearing deposits with other banks 2 66,038 66,038 41,988 41,988 Securities held-to-maturity 2 3,892 4,066 4,395 4,573 Other restricted stock 2 19,057 19,057 10,507 10,507 Loans held for sale 3 28,584 32,408 7,924 8,848 Loans and lease receivables, net (less impaired loans at fair value 3 4,315,928 4,315,239 4,202,793 4,205,906 Accrued interest receivable 3 21,765 21,765 20,678 20,678 Financial liabilities Non-interest-bearing deposits 2 2,015,643 2,015,643 1,762,676 1,762,676 Interest-bearing deposits 2 3,008,897 3,009,901 2,989,355 2,990,735 Accrued interest payable 2 2,267 2,267 1,478 1,478 Paycheck Protection Program Liquidity Facility 2 387,647 387,647 371,907 371,907 Federal Home Loan Bank advances 2 329,000 329,000 234,000 234,000 Securities sold under repurchase agreement 2 33,072 33,072 41,994 41,994 Subordinated notes 2 73,386 75,832 73,342 76,627 Junior subordinated debentures 3 36,565 40,807 36,451 40,543

Derivative Instruments and Hedg

Derivative Instruments and Hedge Activities	3 Months Ended
	Mar. 31, 2021
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedge Activities	Note 16—Derivative Instruments and Hedge Activities As required by ASC 815, the Company records all derivatives on the balance sheet at fair value. The accounting for changes in the fair value of derivatives depends on the intended use of the derivative, whether the Company has elected to designate a derivative in a hedging relationship and apply hedge accounting and whether the hedging relationship has satisfied the criteria necessary to apply hedge accounting. The Company records derivative assets and derivative liabilities on the Consolidated Statements of Financial Condition within accrued interest receivable and other assets and accrued interest payable and other liabilities, respectively. The following tables present the fair value of the Company’s derivative financial instruments and classification on the Consolidated Statements of Financial Condition as of March 31, 2021 and December 31, 2020: March 31, 2021 December 31, 2020 Fair Value Fair Value Notional Amount Other Assets Other Liabilities Notional Amount Other Assets Other Liabilities Derivatives designated as hedging instruments Interest rate swaps designated as cash flow hedges $ 350,000 $ 4,992 $ — $ — $ — $ — Derivatives not designated as hedging instruments Other interest rate derivatives 381,169 11,957 (12,368 ) 383,410 17,149 (18,116 ) Other credit derivatives 8,221 — (12 ) 8,437 — (17 ) Total derivatives $ 739,390 $ 16,949 $ (12,380 ) $ 391,847 $ 17,149 $ (18,133 ) Interest rate swaps designated as cash flow hedges —Cash flow hedges of interest payments associated with certain other borrowings had notional amounts totaling $350.0 million as of March 31, 2021. There were no cash flow hedges outstanding at December 31, 2020. The Company assess the effectiveness of each hedging relationship by comparing the changes in fair value of the derivatives hedging instrument with the fair value of the designated hedged transactions. As of March 31, 2021, the cash flow hedges aggregating $350.0 million in notional amounts are comprised of four forward starting pay fixed interest rate swaps, of which one for $100.0 million is effective in March 2022; one for $50.0 million is effective in September 2022; and the remaining two totaling $200.0 million are effective in March 2023. Included in other comprehensive income is the remaining balance related to previously terminated interest rate swaps designated as cash flow hedges of $289,000 as of March 31, 2021 and $304,000 as of December 31, 2020. These are amortized over the original life of the cash flow hedge. Interest recorded on these swap transactions was $21,000 during the three months ended March 31, 2021, and 2020, respectively, and is reported as a component of interest expense on other borrowings. As of March 31, 2021, the Company estimates $347,000 of the unrealized loss to be reclassified as an increase to interest expense during the next twelve months. The following table reflects the cash flow hedges as of March 31, 2021: Notional amounts $ 350,000 Derivative assets fair value 4,992 Derivative liabilities fair value — Weighted average pay rates 0.93 % Weighted average maturity 5.6 years The following table reflects the net gains (losses) recorded in accumulated other comprehensive income (loss) and the Consolidated Statements of Operations relating to the cash flow derivative instruments for the three months ended: March 31, 2021 March 31, 2020 Amount of Loss Recognized in OCI Amount of Loss Reclassified from OCI to Income as an Increase to Interest Expense Amount of Gain (Loss) Recognized in Other Non-Interest Income Amount of Loss Recognized in OCI Amount of Loss Reclassified from OCI to Income as a Increase to Interest Expense Amount of Gain (Loss) Recognized in Other Non-Interest Income Interest rate swaps $ — $ (21 ) $ — $ — $ (21 ) $ — Derivatives not designated as hedges are not speculative and are used to manage the Company’s exposure to interest rate movements and other identified risks but do not meet the strict hedge accounting requirements and/or the Company has not elected to apply hedge accounting. Changes in the fair value of derivatives not designated in hedging relationships are recorded directly in earnings. Other interest rate derivatives —The total combined notional amount was $381.2 million as of March 31, 2021 with maturities ranging from January 2022 to March 2030. The fair values of the interest rate derivative agreements are reflected in other assets and other liabilities with corresponding gains or losses reflected in non-interest income. During the three months ended March 31, 2021 and 2020, there were $42,000 and $506,000 of transaction fees, respectively, included in other non-interest income, related to these derivative instruments. These instruments are inherently subject to market risk and credit risk. Market risk is associated with changes in interest rates and credit risk relates to the Company’s risk of loss when the counterparty to a derivative contract fails to perform according to the terms of the agreement. Market and credit risks are managed and monitored as part of the Company’s overall asset-liability management process. The credit risk related to derivatives entered into with certain qualified borrowers is managed through the Company’s loan underwriting process. The Company’s loan underwriting process also approves the Bank’s swap counterparty used to mirror the borrowers’ swap. The Company has a bilateral agreement with each swap counterparty that provides that fluctuations in derivative values are to be fully collateralized with either cash or securities. The following table reflects other interest rate derivatives as of March 31, 2021: Notional amounts $ 381,169 Derivative assets fair value 11,957 Derivative liabilities fair value (12,368 ) Weighted average pay rates 4.43 % Weighted average receive rates 2.29 % Weighted average maturity 5.7 years Other credit derivatives — The Company has entered into risk participation agreements with counterparty banks to assume a portion of the credit risk related to borrower transactions. The credit risk related to these other credit derivatives is managed through the Company’s loan underwriting process. The total notional amount was $8.2 million and $8.4 million as of March 31, 2021 and December 31, 2020, respectively. The fair value of the other credit derivatives are reflected in other liabilities with corresponding gains or losses reflected in non-interest income. The Company has agreements with its derivative counterparties that contain a cross-default provision under which if the Company defaults on any of its indebtedness, including default where repayment of the indebtedness has not been accelerated by the lender, then the Company could also be declared in default on its derivative obligations. The Company also has agreements with certain derivative counterparties that contain a provision where if the Company fails to maintain its status as a well or adequately capitalized institution, then the counterparty could terminate the derivative positions and the Company would be required to settle its obligations resulted in a net asset position. The following table reflects amounts included in non-interest income in the Consolidated Statements of Operations relating to derivative instruments that are not designated in a hedging relationship for the three months ended March 31, 2021 and 2020: Three Months Ended March 31, 2021 2020 Other interest rate derivatives $ 556 $ (723 ) Other credit derivatives 5 (12 ) Total $ 561 $ (735 ) The Company records interest rate derivatives subject to master netting agreements at their gross value and does not offset derivative asset and liabilities on the Consolidated Statements of Financial Condition. The table below summarizes the Company’s interest rate derivatives and offsetting positions as of: March 31, 2021 December 31, 2020 Derivative Assets Fair Value Derivative Liabilities Fair Value Derivative Assets Fair Value Derivative Liabilities Fair Value Gross amounts recognized $ 16,949 $ (12,380 ) $ 17,149 $ (18,133 ) Less: Amounts offset in the Consolidated Statements of Financial Condition — — — — Net amount presented in the Consolidated Statements of Financial Condition $ 16,949 $ (12,380 ) $ 17,149 $ (18,133 ) Gross amounts not offset in the Consolidated Statements of Financial Condition Offsetting derivative positions (3,979 ) 3,979 — — Collateral posted (12,029 ) 8,401 (17,149 ) 18,133 Net credit exposure $ 941 $ — $ — $ — As of March 31, 2021, the fair value of derivatives in a net liability position, which includes accrued interest but excludes any adjustment for nonperformance risk, related to these agreements was $12.4 million. The Company has posted $8.6 collateral related to these agreements as of March 31, 2021. If the Company had breached any of these provisions at March 31, 2021, it could have been required to settle its obligations under the agreements at their termination value less offsetting positions of $4.0 million of $8.4 million. For purposes of this disclosure, the amount of posted collateral by the Company and counterparties is limited to the amount offsetting the derivative asset and derivative liability.

Share-Based Compensation

Share-Based Compensation	3 Months Ended
	Mar. 31, 2021
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]
Share-Based Compensation	Note 17 – Share-Based Compensation In June 2017, the Company adopted the 2017 Omnibus Incentive Compensation Plan (the “Omnibus Plan”) in connection with our IPO. The Omnibus Plan provides for the grant of stock options, stock appreciation rights, restricted stock, restricted stock units, dividend equivalent rights and other equity-based, equity-related or cash-based awards. A total of 1,550,000 shares of our common stock have been reserved for issuance under the Omnibus Plan. As of March 31, 2021, there were 709,163 shares available for future grants under the Omnibus Plan. The Company primarily grants time-based restricted share awards that vest over a one to four year period, subject to continued employment. The Company also grants performance-based restricted share awards. The number of shares which may be earned under the award is dependent upon the Company’s return on average assets, weighted equally, over a three-year period ending, measured against a peer group consisting of publicly-traded bank holding companies. Results will be measured cumulatively at the end of the three years. Any earned shares will vest on the third anniversary of the grant date. During 2021, the Company granted 293,587 shares of restricted common stock, par value $0.01 per share. Of this total, 104,609 restricted shares will vest ratably over four years on each anniversary of the grant date, 109,475 restricted shares will vest ratably on the last business day of 2021, 2022 and 2023, 38,279 restricted shares will vest ratably over three years on each anniversary of the grant date and 9,141 restricted shares will cliff vest on the third anniversary of the grant date, all subject to continued employment. In addition, 32,083 performance-based restricted shares were included in the February 2021 grant. The number of shares which may be earned under the award is dependent upon the Company’s return on average assets, weighted equally, over a three-year The following table discloses the changes in restricted shares for the three months ended March 31, 2021: Omnibus Plan Number of Shares Weighted Average Grant Date Fair Value Beginning balance, January 1, 2021 383,539 $ 18.75 Granted 293,587 19.17 Vested (37,989 ) 17.52 Forfeited (5,707 ) 22.36 Ending balance outstanding at March 31, 2021 633,430 $ 18.99 A total of 37,989 restricted shares vested during the three months ended March 31, 2021. A total of 113,264 restricted shares vested during the year ended December 31, 2020. The fair value of restricted shares that vested during the three months ended March 31, 2021 was $756,000. The fair value of restricted shares that vested during the year ended December 31, 2020 was $1.4 million. The Company recognizes share-based compensation based on the estimated fair value of the restricted stock at the grant date. Share-based compensation expense is included in non-interest expense in the Consolidated Statements of Operations. The following table summarizes restricted stock compensation expense for the three months ended March 31, 2021 and 2020: Three Months Ended March 31, 2021 2020 Total share-based compensation - restricted stock $ 783 $ 600 Income tax benefit 218 167 Unrecognized compensation expense 9,720 7,064 Weighted-average amortization period remaining 2.7 years 2.9 years The fair value of the unvested restricted stock awards at March 31, 2021 was $13.4 million. In October 2014, the Company adopted the Byline Bancorp, Inc. Equity Incentive Plan (“BYB Plan”). The maximum number of shares available for grants under this plan was 2,476,122 shares. During 2016 and 2015, the Company granted options to purchase 212,400 and 1,634,568 shares, respectively; the Company did not grant any stock options during 2017. In June 2017, the Board of Directors terminated the BYB Plan and no future grants can be made under this plan. Options to purchase a total of 1,370,579 shares remain outstanding under the BYB Plan at March 31, 2021. The types of stock options granted under the BYB Plan were Time Options and Performance Options. The exercise price of each option is equal to the fair value of the stock as of the date of grant. These option awards have vesting periods ranging from one to five years and have 10-year The fair values of the stock options were determined using the Black-Scholes-Merton model for Time Options and a Monte Carlo simulation model for Performance Options. The following table discloses the activity in shares subject to options and the weighted average exercise prices, in actual dollars, for the three months ended March 31, 2021: BYB Plan Number of Shares Weighted Average Exercise Price Intrinsic Value Weighted Average Remaining Contractual Term (in Years) Beginning balance, January 1, 2021 1,390,579 $ 11.36 $ 5,724 4.4 Exercised (20,000 ) 16.25 $ 25 Expired — Ending balance outstanding at March 31, 2021 1,370,579 $ 11.29 $ 13,513 4.2 Exercisable at March 31, 2021 1,370,579 $ 11.29 $ 13,513 4.2 A total of 20,000 stock options were exercised during the three months ended March 31, 2021. During the three months ended March 31, 2021, proceeds from the exercise of stock options were $325,000 and related tax benefit was $7,000. A total of 19,496 stock options were exercised during the year ended December 31, 2020. During the year ended December 31, 2020, proceeds from the exercise of stock options were $253,000 and related tax benefit was $39,000. No The Company recognizes share-based compensation based on the estimated fair value of the option at the grant date. Forfeitures are estimated based upon industry standards. Share-based compensation expense is included in non-interest expense in the Consolidated Statements of Operations. The following table summarizes stock option compensation expense for the three months ended March 31, 2021 and 2020: Three Months Ended March 31, 2021 2020 Total share-based compensation (benefit) - stock options $ — $ 7 Income tax benefit (expense) — 2 Unrecognized compensation expense - stock options — — Weighted-average amortization period remaining 0.0 years 0.0 years There are no unrecognized stock option compensation expenses as of March 31, 2021. Pursuant to the terms of the Merger Agreement, upon the Effective Time, each outstanding First Evanston Option held by a participant in the First Evanston Bancorp, Inc. Stock Incentive Plan (the “FEB Plan”) ceased to represent a right to acquire shares of First Evanston common stock and was assumed and converted automatically into a fully vested and exercisable adjusted option to purchase shares of Byline common stock (each an “Adjusted Option”). In accordance with the Merger Agreement, the number of shares of Byline common stock to which each such Adjusted Option relates is equal to the product (rounded down to the nearest whole share of Byline common stock) of: (a) the number of shares of First Evanston common stock subject to the First Evanston Option immediately prior to May 31, 2018, multiplied by (ii) 4.725. Each Adjusted Option has an exercise price per share of Byline common stock equal to the quotient (rounded up to the nearest whole cent) of (x) the per share exercise price of such First Evanston Option immediately prior to May 31, 2018, divided by (y) 4.725. The description of the conversion process is based on, and qualified by, the Merger Agreement. The following table discloses the activity in shares subject to options under the FEB Plan and the weighted average exercise prices, in actual dollars, for the three months ended March 31, 2021: FEB Plan Number of Shares Weighted Average Exercise Price Intrinsic Value Weighted Average Remaining Contractual Term (in Years) Beginning balance, January 1, 2021 233,630 $ 11.52 $ 918 3.3 Exercised (35,908 ) $ 11.84 $ 161 Expired — Ending balance outstanding at March 31, 2021 197,722 $ 11.46 $ 1,915 3.6 Exercisable at March 31, 2021 197,722 $ 11.46 $ 1,915 3.6 A total of 35,908 stock options were exercised during the three months ended March 31, 2021. During the three months ended March 31, 2021, proceeds from the exercise of stock options were $425,000 and related tax benefit was $45,000. A total of 255,615 stock options were exercised during the year ended December 31, 2020. During the year ended December 31, 2020, proceeds from the exercise of stock options were $2.8 million and related tax benefit was $219,000. No stock options vested during the three months ended March 31, 2021.

Earnings per Share

Earnings per Share	3 Months Ended
	Mar. 31, 2021
Earnings Per Share [Abstract]
Earnings per Share	Note 18—Earnings per Share A reconciliation of the numerators and denominators for earnings per common share computations is presented below. Incremental shares represent outstanding stock options for which the exercise price is less than the average market price of the Company’s common stock during the periods presented. Options to purchase 1,568,301 and 1,865,842 shares of common stock were outstanding as of March 31, 2021 and 2020, respectively. There were 633,430 and 502,689 restricted stock awards outstanding at March 31, 2021 and 2020, respectively. For the three months ended March 31, 2021, no stock options outstanding were excluded from the calculation of diluted earnings per common share. The following represent the calculation of basic and diluted earnings per share for the periods presented: Three Months Ended March 31, 2021 2020 Net income $ 21,798 $ 2,966 Less: Dividends on preferred shares 196 196 Net income available to common stockholders $ 21,602 $ 2,770 Weighted-average common stock outstanding: Weighted-average common stock outstanding (basic) 38,164,201 37,943,333 Incremental shares 751,281 720,325 Weighted-average common stock outstanding (dilutive) 38,915,482 38,663,658 Basic earnings per common share $ 0.57 $ 0.07 Diluted earnings per common share $ 0.56 $ 0.07

Stockholders' Equity

Stockholders' Equity	3 Months Ended
	Mar. 31, 2021
Equity [Abstract]
Stockholders' Equity	Note 19—Stockholders’ Equity A summary of the Company’s preferred and common stock at March 31, 2021 and December 31, 2020 is as follows: March 31, December 31, 2021 2020 Series B 7.5% fixed to floating non-cumulative perpetual preferred stock Par value $ 0.01 $ 0.01 Shares authorized 50,000 50,000 Shares issued 10,438 10,438 Shares outstanding 10,438 10,438 Common stock, voting Par value $ 0.01 $ 0.01 Shares authorized 150,000,000 150,000,000 Shares issued 39,106,222 38,736,540 Shares outstanding 38,641,851 38,618,054 Treasury shares 464,371 118,486 During 2016, the Company authorized and issued Series B 7.50% fixed-to-floating non-voting, noncumulative perpetual preferred stock with a liquidation preference of $1,000 per share, plus the amount of unpaid dividends, if any, which is redeemable at the Company’s option on or after March 31, 2022. Holders of Series B Preferred Stock do not have any rights to convert such stock into shares of any other class of capital stock of the Company. Holders of Series B Preferred Stock are entitled to receive a fixed dividend of 7.50% per annum from the original issue date through December 30, 2021, after which the dividend is paid at a floating rate of three-month LIBOR plus 5.41% per annum. The Company Series B Preferred Stock is included in Tier 1 capital for regulatory capital purposes and is redeemable at the option of the Company at a redemption price of $1,000 per share, plus any declared and unpaid dividends (i) in whole or part on any dividend payment date on or after March 31, 2022, and (ii) in whole but not in part prior to March 31, 2022, within 90 days following a regulatory event, as defined in the Certificate of Designations of the Company Series B Preferred Stock. The Company must receive approval of the Federal Reserve Board prior to any redemption of the Company Series B Preferred Stock. For the three months ended March 31, 2021 and 2020, the Company declared and paid dividends on the Series B preferred stock of $196,000. On December 10, 2020, the Company announced that its Board of Directors approved a stock repurchase program authorizing the purchase of up to an aggregate of 1,250,000 shares of the Company’s outstanding common stock. The shares may, at the discretion of management, be repurchased from time to time in open market purchases as market conditions warrant or in privately negotiated transactions. The Company is not obligated to purchase any shares under the program, and the program may be discontinued at any time. The actual timing, number and share price of shares purchased under the repurchase program will be determined by the Company at its discretion and will depend on a number of factors, including the market price of the Company’s stock, general market and economic conditions and applicable legal requirements. The shares authorized to be repurchased represent approximately 3.2% of the Company’s outstanding common stock at December 31, 2020. The program will be in effect until December 31, 2022 unless terminated earlier. The Company purchased 332,744 shares at a cost of $6.4 million under this program during the three months ended March 31, 2021. Repurchased shares are recorded as treasury shares on the trade date using the treasury stock method, and the cash paid is recorded as treasury stock. Treasury stock acquired is recorded at cost and is carried as a reduction of stockholders’ equity in the Consolidated Statement of Financial Condition. On November 1, 2019, the Company announced that its Board of Directors approved a stock repurchase program authorizing the purchase of up to an aggregate of 1,250,000 shares of the Company’s outstanding common stock. This program terminated on December 31, 2020. Under this stock repurchase program that terminated on December 31, 2020, the Company purchased 118,486 shares of the 1,250,000 total shares authorized for repurchase under that program during the three months ended March 31, 2020. On January 26, 2021, the Company’s Board of Directors declared a cash dividend of $0.06 per share payable on February 23, 2021 to stockholders of record of the Company’s common stock as of February 9, 2021. During the first quarter of 2020, a $0.03 cash dividend was declared to common stockholders. On April 27, 2021, the Company’s Board of Directors declared a cash dividend of $0.06 per share payable on May 25, 2021 to stockholders of record of the Company’s common stock as of May 11, 2021.

Consolidated Statements of Chan

Consolidated Statements of Changes in Accumulated Other Comprehensive Income (Loss)	3 Months Ended
	Mar. 31, 2021
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]
Consolidated Statements of Changes in Accumulated Other Comprehensive Income (Loss)	Note 20—Consolidated Statements of Changes in Accumulated Other Comprehensive Income (Loss) The following table summarizes the changes in accumulated other comprehensive income (loss) for the three months ended March 31, 2021 and 2020: (dollars in thousands) Unrealized Gains (Losses) on Cash Flow Hedges Unrealized (Losses) on Available-for -Sale Securities Total Accumulated Other Comprehensive Income (Loss) Balance, January 1, 2020 $ (366 ) $ (334 ) $ (700 ) Other comprehensive income, net of tax 16 11,032 11,048 Balance, March 31, 2020 $ (350 ) $ 10,698 $ 10,348 Balance, January 1, 2021 $ (305 ) $ 18,352 $ 18,047 Other comprehensive income (loss), net of tax 3,617 (30,011 ) (26,394 ) Balance, March 31, 2021 $ 3,312 $ (11,659 ) $ (8,347 )

Basis of Presentation (Policies

Basis of Presentation (Policies)	3 Months Ended
	Mar. 31, 2021
Accounting Policies [Abstract]
Basis of Presentation	These unaudited interim condensed consolidated financial statements include the accounts of Byline Illinois state chartered These unaudited interim condensed consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America (“GAAP”) for interim financial information and in accordance with the instructions to Form 10-Q and Article 10 of Regulation S-X as promulgated by the Securities and Exchange Commission (“SEC”). In preparing these financial statements, the Company has evaluated events and transactions subsequent to March 31, 2021 for potential recognition or disclosure. In the opinion of management, all adjustments (consisting of normal recurring accruals) considered necessary for a fair presentation of the financial position and results of operations for the periods presented have been included. Certain information in footnote disclosures normally included in financial statements prepared in accordance with GAAP has been condensed or omitted pursuant to the rules and regulations of the SEC and the accounting standards for interim financial statements. These financial statements should be read in conjunction with the consolidated financial statements and notes thereto included in the Company’s Consolidated Financial Statements for the years ended December 31, 2020, 2019, and 2018. In accordance with the Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) Topic 855, “Subsequent Events,” the Company’s management has evaluated subsequent events for potential recognition or disclosure through the date of the issuance of these condensed consolidated financial statements. The Company has one reportable segment. The Company’s chief operating decision maker evaluates the operations of the Company using consolidated information for purposes of allocating resources and assessing performance. Therefore, segments disclosures are not required. No subsequent events were identified that would have required a change to the condensed consolidated financial statements or disclosure in the notes to the condensed consolidated financial statements. Certain prior period amounts have been reclassified to conform to current period presentation. These reclassifications did not result in any changes to previously reported net income or stockholders’ equity.
Accounting Pronouncements Recently Adopted or Issued	The following reflect recent accounting pronouncements that have been adopted or are pending adoption by the Company. As the Company qualifies as an emerging growth company and has elected the extended transition period for complying with new or revised accounting pronouncements, it is not subject to new or revised accounting standards applicable to public companies during the extended transition period. The accounting pronouncements pending adoption below reflect effective dates for the Company as an emerging growth company with the extended transition period. Adopted Accounting Pronouncement Leases (Topic 842) — On January 1, 2021, the Company adopted ASU No. 2016-02 and subsequent amendments thereto, which requires the Company to recognize most leases on the balance sheet. We adopted the standard under a modified retrospective approach as of the date of adoption and elected to apply several of the available practical expedients, including: • Carry over of historical lease determination and lease classification conclusions • Carry over of historical initial direct cost balances for existing leases • Option not to recognize right-of-use assets and lease liabilities that arise from short-term leases (i.e. lease terms of twelve months or less) • Use of hindsight in determining the lease term and right-of-use assets • Accounting for lease and non-lease components in contracts in which the Company is a lessee as a single lease component Adoption of the leasing standard resulted in the recognition of operating right-of-use assets of $10.5 million and operating lease liabilities of $11.7 million as of January 1, 2021. These amounts were determined based on the present value of remaining minimum lease payments, discounted using the Company’s incremental borrowing rate as of the date of adoption. This guidance also applies to the Company’s investment in direct financing leases, which are included in loans, but did not have a material impact. There was no material impact to the timing of expense or income recognition in the Company’s Consolidated Statements of Operations. Prior periods were not restated and continue to be presented under legacy GAAP. Refer to Note 8—Leases for further details. Issued Accounting Pronouncements Pending Adoption Financial Instruments—Credit Losses (Topic 326) —In June 2016, FASB issued ASU No. 2016‑13, . Current GAAP requires an “incurred loss” methodology for recognizing credit losses that delays recognition until it is probable a loss has been incurred. The main objective of this ASU is to provide financial statement users with more decision-useful information about the expected credit losses on financial instruments and other commitments to extend credit held by a reporting entity at each reporting date. The amendments in this ASU replace the incurred loss impairment methodology in current GAAP with a methodology that reflects expected credit losses and requires consideration of a broader range of reasonable and supportable information to inform credit loss estimates. The amendments in this ASU require a financial asset (or group of financial assets) measured at amortized cost basis to be presented at the net amount expected to be collected. The allowance for credit losses is a valuation account that is deducted from the amortized cost basis of the financial asset(s) to present the net carrying value at the amount expected to be collected on the financial asset. The measurement of expected credit losses will be based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. The amendments in this ASU broaden the information that an entity must consider in developing its expected credit loss estimate for assets measured either collectively or individually. The use of forecasted information incorporates more timely information in the estimate of expected credit loss, which will be more useful to users of the financial statements. In November 2019, FASB issued ASU No. 2019-10, , which delays the effective date of the ASU for entities not classified as a public business entity. Assuming the Company remains an emerging growth company, the new authoritative guidance is effective for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years. The Company is in the process of implementation and determining the impact that this ASU will have on the Company’s Consolidated Financial Statements. Income Taxes (Topic 740) —In December 2019, FASB issued ASU No. 2019-12, Simplifying the Accounting for Income Taxes . The amendments in the ASU simplify the accounting for income taxes by removing the following: the exception to the incremental approach for intraperiod tax allocation when there is a loss from continuing operations and income or a gain from other items; the exception to the requirement to or not to recognize a deferred tax liability for a foreign entity when it becomes an equity method investment or it becomes a subsidiary, respectively; and the exception to the general methodology for calculating income taxes in an interim period when a year-to-date loss exceeds the anticipated loss for the year. The amendments in the ASU changes current authoritative guidance by requiring the recognition of franchise tax that is partially based on income as an income-based tax and account for any incremental amount incurred as a non-income-based tax; requiring an evaluation when a step up in the tax basis of goodwill should be considered part the of business combination; specifying that it is not required to allocate the consolidated amount of current and deferred tax expense to a legal entity that is not subject to tax in its separate financial statements; and requiring that an entity reflect the effect of an enacted change in tax laws or rates in the annual effective tax rate computation in the interim period that includes the enactment date. The amendments are effective for annual periods beginning after December 15, 2021, and interim periods within annual periods beginning after December 15, 2022. Early adoption is permitted. Assuming the Company remains an emerging growth company, the new authoritative guidance will be effective for reporting periods after January 1, 2022. The Company is currently evaluating the provisions of ASU No. 2019-12 to determine the potential impact the new standard will have on the Company’s Consolidated Financial Statements. Reference Rate Reform (Topic 848) —In March 2020, FASB issued ASU No. 2020-04, . The amendments in the ASU provide optional guidance for a limited period of time to ease the potential burden in accounting for (or recognizing the effects of) reference rate reform on financial reporting. The amendments in the ASU provide optional expedients and exceptions for applying generally accepted accounting principles to contract modifications and hedging relationships, subject to meeting certain criteria, that reference LIBOR or another reference rate expected to be discontinued. The ASU is intended to help stakeholders during the global market-wide reference rate transition period. The amendments in the ASU will be in effect for all entities as of March 12, 2020 through December 31, 2022. The Company is currently evaluating the provisions of ASU No. 2020-04 to determine the potential impact the new standard will have on the Company’s Consolidated Financial Statements.

Securities (Tables)

Securities (Tables)	3 Months Ended
	Mar. 31, 2021
Investments Debt And Equity Securities [Abstract]
Summary of Amortized Cost and Fair Values of Securities Available-for-sale, and Held to Maturity	The following March 31, 2021 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Available-for-sale U.S. Treasury Notes $ 13,475 $ 243 $ — $ 13,718 U.S. Government agencies 142,134 721 (3,270 ) 139,585 Obligations of states, municipalities, and political subdivisions 102,966 3,854 (292 ) 106,528 Residential mortgage-backed securities Agency 985,375 4,802 (19,085 ) 971,092 Non-agency 68,562 149 (761 ) 67,950 Commercial mortgage-backed securities Agency 269,997 4,009 (4,795 ) 269,211 Corporate securities 61,018 1,602 (68 ) 62,552 Asset-backed securities 45,188 83 — 45,271 Total $ 1,688,715 $ 15,463 $ (28,271 ) $ 1,675,907 March 31, 2021 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Held-to-maturity Obligations of states, municipalities, and political subdivisions $ 3,892 $ 174 $ — $ 4,066 Total $ 3,892 $ 174 $ — $ 4,066 December 31, 2020 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Available-for-sale U.S. Treasury Notes $ 23,468 $ 344 $ — $ 23,812 U.S. Government agencies 113,088 600 (137 ) 113,551 Obligations of states, municipalities, and political subdivisions 135,513 6,991 (85 ) 142,419 Residential mortgage-backed securities Agency 764,951 13,645 (205 ) 778,391 Non-agency 32,654 332 (5 ) 32,981 Commercial mortgage-backed securities Agency 244,496 6,046 (390 ) 250,152 Corporate securities 59,020 1,850 (102 ) 60,768 Asset-backed securities 45,255 26 (125 ) 45,156 Total $ 1,418,445 $ 29,834 $ (1,049 ) $ 1,447,230 December 31, 2020 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value Held-to-maturity Obligations of states, municipalities, and political subdivisions $ 4,395 $ 178 $ — $ 4,573 Total $ 4,395 $ 178 $ — $ 4,573
Summary of Gross Unrealized Losses and Fair Values, Aggregated by Investment Category and Length of Individual Securities Continuous Unrealized Loss Position Available-for-sale and Held to Maturity	Gross unrealized losses and fair values, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position as of March 31, 2021 and December 31, 2020, are summarized as follows: Less than 12 Months 12 Months or Longer Total March 31, 2021 # of Securities Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Available-for-sale U.S. Government agencies 13 $ 106,908 $ (3,270 ) $ — $ — $ 106,908 $ (3,270 ) Obligations of states, municipalities and political subdivisions 8 13,689 (292 ) — — 13,689 (292 ) Residential mortgage-backed securities Agency 59 781,666 (19,074 ) 439 (11 ) 782,105 (19,085 ) Non-agency 4 28,484 (761 ) — — 28,484 (761 ) Commercial mortgage-backed securities Agency 20 106,172 (4,795 ) — — 106,172 (4,795 ) Corporate securities 4 8,470 (68 ) — — 8,470 (68 ) Total 108 $ 1,045,389 $ (28,260 ) $ 439 $ (11 ) $ 1,045,828 $ (28,271 ) Less than 12 Months 12 Months or Longer Total December 31, 2020 # of Securities Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Available-for-sale U.S. Government agencies 5 $ 30,639 $ (137 ) $ — $ — $ 30,639 $ (137 ) Obligations of states, municipalities and political subdivisions 2 210 (85 ) — — 210 (85 ) Residential mortgage-backed securities Agency 8 45,253 (198 ) 472 (7 ) 45,725 (205 ) Non-agency 2 3,963 (5 ) — — 3,963 (5 ) Commercial mortgage-backed securities Agency 8 55,554 (390 ) — — 55,554 (390 ) Corporate securities 6 10,916 (102 ) — — 10,916 (102 ) Asset-backed securities 6 24,436 (99 ) 4,952 (26 ) 29,388 (125 ) Total 37 $ 170,971 $ (1,016 ) $ 5,424 $ (33 ) $ 176,395 $ (1,049 )
Summary of Proceeds From Sales of Securities Available-for-sale and Associated Gains and Losses	The proceeds from all sales of securities three months ended March 31, 2021 For the Three Months Ended March 31, 2021 2020 Proceeds $ 89,301 $ 45,417 Gross gains 1,626 1,457 Gross losses 164 82
Schedule of Amortized Cost and Fair Value of Debt Securities by Contractual Maturity	At March 31, 2021, the Amortized Cost Fair Value Available-for-sale Due in one year or less $ 21,786 $ 22,111 Due from one to five years 34,665 35,947 Due from five to ten years 212,875 213,519 Due after ten years 95,455 96,077 Mortgage-backed securities 1,323,934 1,308,253 Total $ 1,688,715 $ 1,675,907 Held-to-maturity Due from one to five years 3,892 4,066 Total $ 3,892 $ 4,066

Loan and Lease Receivables (Tab

Loan and Lease Receivables (Tables)	3 Months Ended
	Mar. 31, 2021
Receivables [Abstract]
Schedule of Outstanding Loan and Lease Receivables	Outstanding loan and lease receivables as of the dates shown were categorized as follows: March 31, December 31, 2021 2020 Commercial real estate $ 1,428,875 $ 1,416,731 Residential real estate 544,741 569,387 Construction, land development, and other land 241,809 231,602 Commercial and industrial 1,362,741 1,372,452 Paycheck Protection Program 631,170 527,044 Installment and other 1,568 1,942 Lease financing receivables 250,439 223,295 Total loans and leases 4,461,343 4,342,453 Net unamortized deferred fees and costs (10,615 ) (5,764 ) Initial direct costs 3,892 3,846 Allowance for loan and lease losses (65,590 ) (66,347 ) Net loans and leases $ 4,389,030 $ 4,274,188 March 31, December 31, 2021 2020 Lease financing receivables Net minimum lease payments $ 259,178 $ 234,472 Unguaranteed residual values 12,467 8,690 Unearned income (21,206 ) (19,867 ) Total lease financing receivables 250,439 223,295 Initial direct costs 3,892 3,846 Lease financial receivables before allowance for lease losses $ 254,331 $ 227,141
Summary of Minimum Annual Lease Payments for Lease Financing Receivables	The minimum Minimum Lease Payments 2021 $ 68,542 2022 77,452 2023 56,185 2024 34,356 2025 19,047 Thereafter 3,596 Total $ 259,178
Summary of Balances for Each Respective Loan and Lease Category	The following March 31, 2021 Originated Acquired Impaired Acquired Non-Impaired Total Commercial real estate $ 1,064,151 $ 96,059 $ 271,458 $ 1,431,668 Residential real estate 399,958 74,283 71,038 545,279 Construction, land development, and other land 238,122 1,992 210 240,324 Commercial and industrial 1,285,759 8,842 69,795 1,364,396 Paycheck Protection Program 617,006 — — 617,006 Installment and other 1,094 191 331 1,616 Lease financing receivables 243,399 — 10,932 254,331 Total loans and leases $ 3,849,489 $ 181,367 $ 423,764 $ 4,454,620 December 31, 2020 Originated Acquired Impaired Acquired Non-Impaired Total Commercial real estate $ 1,017,587 $ 108,484 $ 295,599 $ 1,421,670 Residential real estate 414,220 78,840 79,211 572,271 Construction, land development, and other land 226,408 4,113 212 230,733 Commercial and industrial 1,276,527 10,178 82,195 1,368,900 Paycheck Protection Program 517,815 — — 517,815 Installment and other 1,267 202 536 2,005 Lease financing receivables 214,636 — 12,505 227,141 Total loans and leases $ 3,668,460 $ 201,817 $ 470,258 $ 4,340,535
Summary of Outstanding Balance and Carrying Amount of All Acquired Impaired Loans	Acquired impaired loans —The unpaid principal balance and carrying amount of all acquired impaired loans are summarized below. The balances do not include an allowance for loan and lease losses of $4.2 million and $6.5 million, at March 31, 2021 and December 31, 2020, respectively. March 31, 2021 December 31, 2020 Unpaid Principal Balance Carrying Value Unpaid Principal Balance Carrying Value Commercial real estate $ 138,823 $ 96,059 $ 154,233 $ 108,484 Residential real estate 121,084 74,283 126,086 78,840 Construction, land development, and other land 9,581 1,992 12,677 4,113 Commercial and industrial 14,050 8,842 15,925 10,178 Installment and other 890 191 917 202 Total acquired impaired loans $ 284,428 $ 181,367 $ 309,838 $ 201,817
Summary of Changes in Accretable Yield for Acquired Impaired Loans	The following table summarizes the changes in accretable yield for acquired impaired loans for the three months ended March 31, 2021 and 2020: Three Months Ended March 31, 2021 2020 Beginning balance $ 27,696 $ 40,009 Accretion to interest income (3,707 ) (5,205 ) Reclassification from nonaccretable difference, net 1,273 2,233 Ending balance $ 25,262 $ 37,037
Schedule of Unpaid Principal Balance and Carrying Value for Acquired Non-Impaired Loans and Leases	Acquired non-impaired loans and leases — The unpaid principal balance and carrying value for acquired non-impaired loans and leases at March 31, 2021 and December 31, 2020 were as follows: March 31, 2021 December 31, 2020 Unpaid Principal Balance Carrying Value Unpaid Principal Balance Carrying Value Commercial real estate $ 277,282 $ 271,458 $ 302,091 $ 295,599 Residential real estate 71,838 71,038 80,104 79,211 Construction, land development, and other land 276 210 278 212 Commercial and industrial 72,122 69,795 84,608 82,195 Installment and other 344 331 553 536 Lease financing receivables 12,301 10,932 13,978 12,505 Total acquired non-impaired loans and leases $ 434,163 $ 423,764 $ 481,612 $ 470,258

Allowance for Loan and Lease _2

Allowance for Loan and Lease Losses and Reserve for Unfunded Commitments (Tables)	3 Months Ended
	Mar. 31, 2021
Receivables [Abstract]
Allowance for Loan and Lease Losses and Reserve for Unfunded Commitments	The following March 31, 2021 Commercial Real Estate Residential Real Estate Construction, Land Development, and Other Land Commercial and Industrial Paycheck Protection Program Installment and Other Lease Financing Receivables Total Allowance for loan and lease losses Three months ended Beginning balance $ 19,584 $ 2,400 $ 1,352 $ 41,183 $ — $ 15 $ 1,813 $ 66,347 Provisions (release) 2,606 (302 ) (241 ) 1,947 — (3 ) 360 4,367 Charge-offs (1,877 ) (11 ) (326 ) (2,888 ) — — (364 ) (5,466 ) Recoveries 185 4 — 60 — — 93 342 Ending balance $ 20,498 $ 2,091 $ 785 $ 40,302 $ — $ 12 $ 1,902 $ 65,590 Ending balance: Individually evaluated for impairment $ 7,409 $ 101 $ — $ 18,824 $ — $ — $ — $ 26,334 Collectively evaluated for impairment 10,881 1,460 780 20,066 — 12 1,902 35,101 Loans acquired with deteriorated credit quality 2,208 530 5 1,412 — — — 4,155 Total allowance for loan and lease losses $ 20,498 $ 2,091 $ 785 $ 40,302 $ — $ 12 $ 1,902 $ 65,590 March 31, 2021 Commercial Real Estate Residential Real Estate Construction, Land Development, and Other Land Commercial and Industrial Paycheck Protection Program Installment and Other Lease Financing Receivables Total Loans and leases ending balance: Individually evaluated for impairment $ 54,421 $ 1,709 $ — $ 43,306 $ — $ — $ — $ 99,436 Collectively evaluated for impairment 1,281,188 469,287 238,332 1,312,248 617,006 1,425 254,331 4,173,817 Loans acquired with deteriorated credit quality 96,059 74,283 1,992 8,842 — 191 — 181,367 Total loans and leases $ 1,431,668 $ 545,279 $ 240,324 $ 1,364,396 $ 617,006 $ 1,616 $ 254,331 $ 4,454,620 March 31, 2020 Commercial Real Estate Residential Real Estate Construction, Land Development, and Other Land Commercial and Industrial Installment and Other Lease Financing Receivables Total Allowance for loan and lease losses Three months ended Beginning balance $ 7,965 $ 1,990 $ 610 $ 19,377 $ 50 $ 1,944 $ 31,936 Provisions 4,422 784 394 8,546 3 306 14,455 Charge-offs (552 ) (5 ) — (3,958 ) — (457 ) (4,972 ) Recoveries 16 9 — 174 — 222 421 Ending balance $ 11,851 $ 2,778 $ 1,004 $ 24,139 $ 53 $ 2,015 $ 41,840 Ending balance: Individually evaluated for impairment $ 3,634 $ 92 $ — $ 9,709 $ — $ — $ 13,435 Collectively evaluated for impairment 6,115 1,685 915 13,320 53 2,015 24,103 Loans acquired with deteriorated credit quality 2,102 1,001 89 1,110 — — 4,302 Total allowance for loan and lease losses $ 11,851 $ 2,778 $ 1,004 $ 24,139 $ 53 $ 2,015 $ 41,840 March 31, 2020 Commercial Real Estate Residential Real Estate Construction, Land Development, and Other Land Commercial and Industrial Installment and Other Lease Financing Receivables Total Loans and leases ending balance: Individually evaluated for impairment $ 32,974 $ 1,960 $ 2,577 $ 43,926 $ — $ — $ 81,437 Collectively evaluated for impairment 1,134,090 597,839 269,908 1,354,825 5,485 173,247 3,535,394 Loans acquired with deteriorated credit quality 127,895 94,198 5,291 15,808 236 — 243,428 Total loans and leases $ 1,294,959 $ 693,997 $ 277,776 $ 1,414,559 $ 5,721 $ 173,247 $ 3,860,259
Summary of Recorded Investment, Unpaid Principal Balance, and Related Allowance for Loans and Leases Considered Impaired	The following and March 31, 2021 Recorded Investment Unpaid Principal Balance Related Allowance With no related allowance recorded Commercial real estate $ 28,685 $ 30,853 $ — Residential real estate 1,496 1,609 — Commercial and industrial 13,585 16,218 — With an allowance recorded Commercial real estate 25,736 27,275 7,409 Residential real estate 213 215 101 Commercial and industrial 29,721 32,389 18,824 Total impaired loans $ 99,436 $ 108,559 $ 26,334 December 31, 2020 Recorded Investment Unpaid Principal Balance Related Allowance With no related allowance recorded Commercial real estate $ 32,473 $ 34,792 $ — Residential real estate 1,558 1,644 — Commercial and industrial 17,944 19,917 — With an allowance recorded Commercial real estate 13,696 14,919 5,034 Residential real estate 272 274 78 Commercial and industrial 29,412 32,018 18,848 Total impaired loans $ 95,355 $ 103,564 $ 23,960
Summary of Average Recorded Investment and Interest Income Recognized for Loans and Leases Considered Impaired	The following tables summarize the average recorded investment and interest income recognized for loans and leases considered impaired, which excludes acquired impaired loans, for the three months ended: March 31, 2021 Average Recorded Investment Interest Income Recognized With no related allowance recorded Commercial real estate $ 34,961 $ 311 Residential real estate 3,080 18 Commercial and industrial 16,568 129 With an allowance recorded Commercial real estate 22,178 161 Residential real estate 298 2 Commercial and industrial 31,089 273 Total impaired loans $ 108,174 $ 894 March 31, 2020 Average Recorded Investment Interest Income Recognized With no related allowance recorded Commercial real estate $ 18,728 $ 277 Residential real estate 1,221 — Construction, land development, and other land 2,836 20 Commercial and industrial 14,368 105 With an allowance recorded Commercial real estate 13,177 136 Residential real estate 771 14 Commercial and industrial 24,668 441 Total impaired loans $ 75,769 $ 993
Summary of Risk Rating Categories of Loans and Leases Considered for Inclusion in Allowance for Loan and Lease Losses Calculation	The following March 31, 2021 Commercial Real Estate Residential Real Estate Construction, Land Development, and Other Land Commercial and Industrial Paycheck Protection Program Installment and Other Lease Financing Receivables Total Pass $ 1,088,465 $ 444,196 $ 192,326 $ 1,074,221 $ 617,006 $ 1,333 $ 250,166 $ 3,667,713 Watch 142,956 22,937 46,006 195,166 — 92 45 407,202 Special Mention 49,714 1,702 — 41,025 — — 2,370 94,811 Substandard 54,474 2,161 — 45,142 — — 1,282 103,059 Doubtful — — — — — — 468 468 Loss — — — — — — — — Total $ 1,335,609 $ 470,996 $ 238,332 $ 1,355,554 $ 617,006 $ 1,425 $ 254,331 $ 4,273,253 December 31, 2020 Commercial Real Estate Residential Real Estate Construction, Land Development, and Other Land Commercial and Industrial Paycheck Protection Program Installment and Other Lease Financing Receivables Total Pass $ 1,064,623 $ 463,103 $ 180,458 $ 1,027,399 $ 517,815 $ 1,706 $ 222,818 $ 3,477,922 Watch 134,381 22,086 46,162 225,930 — 96 47 428,702 Special Mention 60,022 3,795 — 56,784 — — 2,721 123,322 Substandard 54,160 4,447 — 48,609 — 1 955 108,172 Doubtful — — — — — — 600 600 Loss — — — — — — — — Total $ 1,313,186 $ 493,431 $ 226,620 $ 1,358,722 $ 517,815 $ 1,803 $ 227,141 $ 4,138,718
Summary of Contractual Delinquency Information	The following tables summarize contractual delinquency information for acquired non-impaired and originated loans and leases by category at March 31, 2021 and December 31, 2020: March 31, 2021 30-59 Days Past Due 60-89 Days Past Due Greater than 90 Days and Accruing Non- accrual Total Past Due Current Total Commercial real estate $ 17,629 $ — $ — $ 16,198 $ 33,827 $ 1,301,782 $ 1,335,609 Residential real estate 1,310 1,000 — 2,078 4,388 466,608 470,996 Construction, land development, and other land 1,760 — — — 1,760 236,572 238,332 Commercial and industrial 3,076 588 — 17,565 21,229 1,334,325 1,355,554 Paycheck Protection Program — — — — — 617,006 617,006 Installment and other — — — — — 1,425 1,425 Lease financing receivables 1,859 521 — 1,243 3,623 250,708 254,331 Total $ 25,634 $ 2,109 $ — $ 37,084 $ 64,827 $ 4,208,426 $ 4,273,253 December 31, 2020 30-59 Days Past Due 60-89 Days Past Due Greater than 90 Days and Accruing Non- accrual Total Past Due Current Total Commercial real estate $ 1,544 $ 4,194 $ — $ 15,969 $ 21,707 $ 1,291,479 $ 1,313,186 Residential real estate 1,686 — — 1,929 3,615 489,816 493,431 Construction, land development, and other land — — — — — 226,620 226,620 Commercial and industrial 4,521 1,290 — 21,936 27,747 1,330,975 1,358,722 Paycheck Protection Program — — — — — 517,815 517,815 Installment and other 6 — — 1 7 1,796 1,803 Lease financing receivables 996 376 — 1,268 2,640 224,501 227,141 Total $ 8,753 $ 5,860 $ — $ 41,103 $ 55,716 $ 4,083,002 $ 4,138,718
Summary of TDR's by Loan Category	The tables below present TDRs by loan category as of March 31, 2021 and December 31, 2020: March 31, 2021 Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Charge-offs Specific Reserves Accruing: Commercial real estate 9 $ 2,425 $ 2,425 $ — $ 205 Commercial and industrial 1 74 74 — 74 Residential real estate 3 220 220 — — Total accruing 13 2,719 2,719 — 279 Non-accruing: Commercial real estate 5 2,274 1,911 363 414 Commercial and industrial 10 3,837 3,674 163 1,750 Total non-accruing 15 6,111 5,585 526 2,164 Total troubled debt restructurings 28 $ 8,830 $ 8,304 $ 526 $ 2,443 December 31, 2020 Number of Loans Pre-Modification Outstanding Recorded Investment Post-Modification Outstanding Recorded Investment Charge-offs Specific Reserves Accruing: Commercial real estate 8 $ 2,187 $ 2,187 $ — $ 104 Commercial and industrial 1 78 78 — 78 Residential real estate 3 230 230 — — Total accruing 12 2,495 2,495 — 182 Non-accruing: Commercial real estate 4 1,609 1,362 247 102 Commercial and industrial 14 4,420 4,288 132 3,157 Total non-accruing 18 6,029 5,650 379 3,259 Total troubled debt restructurings 30 $ 8,524 $ 8,145 $ 379 $ 3,441
Summary of Loans Modified as Troubled Debt Restructurings	Loans modified and 2020 were: Three Months Ended March 31, 2021 2020 Accruing: Beginning balance $ 2,495 $ 1,771 Additions 281 — Net payments (57 ) (46 ) Net transfers from non-accrual — — Ending balance 2,719 1,725 Non-accruing: Beginning balance 5,650 8,800 Additions 673 4,258 Net payments (343 ) (941 ) Charge-offs (395 ) — Net transfers to accrual — — Ending balance 5,585 12,117 Total troubled debt restructurings $ 8,304 $ 13,842

Servicing Assets (Tables)

Servicing Assets (Tables)	3 Months Ended
	Mar. 31, 2021
Transfers And Servicing [Abstract]
Activity for Servicing Assets and Related Changes in Fair Value	Activity for the three months ended March 31, 2021 and 2020 was Three Months Ended March 31, 2021 2020 Beginning balance $ 22,042 $ 19,471 Additions, net 1,603 1,393 Changes in fair value (1,505 ) (3,064 ) Ending balance $ 22,140 $ 17,800
Unpaid Principal Balances of Loans Serviced for Others	The unpaid as of and were as follows: March 31, December 31, 2021 2020 Loan portfolios serviced for: SBA guaranteed loans $ 1,422,478 $ 1,395,713 USDA guaranteed loans 146,512 135,543 Total $ 1,568,990 $ 1,531,256

Other Real Estate Owned (Tables

Other Real Estate Owned (Tables)	3 Months Ended
	Mar. 31, 2021
Real Estate [Abstract]
Change in Other Real Estate Owned	The following table presents the change in other real estate owned (“OREO”) for the three months ended March 31, 2021 Three Months Ended March 31, 2021 2020 Beginning balance $ 6,350 $ 9,896 Net additions to OREO 436 22 Proceeds from sales of OREO (370 ) (264 ) Gains on sales of OREO 28 82 Valuation adjustments (492 ) (463 ) Ending balance $ 5,952 $ 9,273

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2021
Leases [Abstract]
Schedule of Operating Lease Right-of-use Asset and Liability	The following table summarizes the amount and balance sheet line item for our operating lease right-of-use asset and liability as of March 31, 2021: Balance Sheet Line Item March 31, 2021 Operating lease right-of-use asset Accrued interest receivable and other assets $ 9,672 Operating lease liability Accrued interest payable and other liabilities 12,273
Schedule of Future Minimum Lease Payments for Operating Leases	The future minimum lease payments Operating Lease Commitments 2021 $ 2,958 2022 3,024 2023 1,731 2024 1,490 2025 777 Thereafter 2,865 Total undiscounted lease payments 12,845 Less: imputed interest (572 ) Net lease liabilities $ 12,273

Goodwill, Core Deposit Intang_2

Goodwill, Core Deposit Intangible and Other Intangible Assets (Tables)	3 Months Ended
	Mar. 31, 2021
Goodwill And Intangible Assets Disclosure [Abstract]
Summary of Changes in Goodwill, Core Deposit Intangible Assets and Customer Relationship Intangible Assets	The following tables summarize the changes in the Company’s goodwill, core deposit intangible assets, and customer relationship intangible assets for the three months ended March 31, 2021 and 2020: For the Three Months Ended March 31, 2021 2020 Goodwill Core Intangible Customer Relationship Intangible Goodwill Core Intangible Customer Relationship Intangible Beginning balance $ 148,353 $ 21,809 $ 2,469 $ 148,353 $ 29,111 $ 2,791 Amortization — (1,683 ) (66 ) — (1,826 ) (67 ) Ending balance $ 148,353 $ 20,126 $ 2,403 $ 148,353 $ 27,285 $ 2,724 Accumulated amortization N/A $ 33,340 $ 813 N/A $ 28,181 $ 492 Weighted average remaining amortization period N/A 5.4 Years 9.0 Years N/A 6.3 Years 10.2 Years
Estimated Amortization Expense for Core Deposit Intangible and Customer Relationship Intangible Recognized	The following table presents the estimated amortization expense for core deposit intangible and customer relationship intangible assets remaining at March 31, 2021: Estimated Amortization 2021 $ 5,249 2022 6,426 2023 4,371 2024 2,286 2025 1,721 Thereafter 2,476 Total $ 22,529

Deposits (Tables)

Deposits (Tables)	3 Months Ended
	Mar. 31, 2021
Deposits [Abstract]
Composition of Deposits	The composition of deposits was as follows as of March 31, 2021 and December 31, 2020: March 31, December 31, 2021 2020 Non-interest-bearing demand deposits $ 2,015,643 $ 1,762,676 Interest-bearing checking accounts 567,660 494,424 Money market demand accounts 1,075,330 1,142,709 Other savings 600,725 564,700 Time deposits (below $250,000) 579,682 600,810 Time deposits ($250,000 and above) 185,500 186,712 Total deposits $ 5,024,540 $ 4,752,031

Other Borrowings (Tables)

Other Borrowings (Tables)	3 Months Ended
	Mar. 31, 2021
Debt Disclosure [Abstract]
Summary of Other Borrowings	The following is a summary of the Company’s other borrowings as of March 31, 2021 and December 31, 2020: March 31, December 31, 2021 2020 Paycheck Protection Program Liquidity Facility $ 387,647 $ 371,907 Federal Home Loan Bank advances 329,000 234,000 Securities sold under agreements to repurchase 33,072 41,994 Line of credit — — Total $ 749,719 $ 647,901
Summary of Short-term Credit Lines Available for Use	The following March 31, December 31, 2021 2020 Federal Home Loan Bank line $ 1,883,967 $ 2,016,212 Federal Reserve Bank of Chicago discount window line 885,510 874,677 Available federal funds lines 115,000 115,000

Subordinated Notes and Junior_2

Subordinated Notes and Junior Subordinated Debentures (Tables)	3 Months Ended
	Mar. 31, 2021
Debt Disclosure [Abstract]
Junior Subordinated Debentures by Issuance	At March 31, 2021 and December 31, 2020, the Name of Trust Aggregate Principal Amount March 31, 2021 Aggregate Principal Amount December 31, 2020 Stated Maturity Contractual Rate at March 31, 2021 Interest Rate Spread Metropolitan $ 35,000 $ 35,000 March 2.97 % Three-month LIBOR + 2.79% First Evanston Bancorp Trust I 10,000 10,000 March 15, 2035 1.96 % Three-month LIBOR + 1.78% Total liability, at par 45,000 45,000 Discount (8,435 ) (8,549 ) Total liability, at carrying value $ 36,565 $ 36,451

Commitments and Contingent Li_2

Commitments and Contingent Liabilities (Tables)	3 Months Ended
	Mar. 31, 2021
Commitments And Contingencies Disclosure [Abstract]
Summary of Contract or Notional Amount of Outstanding Loan and Lease Commitments	The following March 31, 2021 December 31, 2020 Fixed Rate Variable Total Fixed Variable Total Commitments to extend credit $ 124,817 $ 1,380,797 $ 1,505,614 $ 106,183 $ 1,261,872 $ 1,368,055 Letters of credit 652 58,974 59,626 652 58,120 58,772 Total $ 125,469 $ 1,439,771 $ 1,565,240 $ 106,835 $ 1,319,992 $ 1,426,827

Fair Value Measurement (Tables)

Fair Value Measurement (Tables)	3 Months Ended
	Mar. 31, 2021
Fair Value Disclosures [Abstract]
Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis	The following Fair Value Measurements Using March 31, 2021 Fair Value Level 1 Level 2 Level 3 Financial assets Securities available-for-sale U.S. Treasury Notes $ 13,718 $ 13,718 $ — $ — U.S. Government agencies 139,585 — 139,585 — Obligations of states, municipalities, and political subdivisions 106,528 — 106,528 — Mortgage-backed securities; residential Agency 971,092 — 971,092 — Non-Agency 67,950 — 67,950 — Mortgage-backed securities; commercial Agency 269,211 — 269,211 — Corporate securities 62,552 — 62,552 — Asset-backed securities 45,271 — 45,271 — Equity and other securities, at fair value Mutual funds 2,939 2,939 — — Equity securities 5,618 — 4,932 686 Servicing assets 22,140 — — 22,140 Derivative assets 16,949 — 16,949 — Financial liabilities Derivative liabilities 12,380 — 12,380 — Fair Value Measurements Using December 31, 2020 Fair Value Level 1 Level 2 Level 3 Financial assets Securities available-for-sale U.S. Treasury Notes $ 23,812 $ 23,812 $ — $ — U.S. Government agencies 113,551 — 113,551 — Obligations of states, municipalities, and political subdivisions 142,419 — 142,419 Mortgage-backed securities; residential Agency 778,391 — 778,391 — Non-Agency 32,981 — 32,981 — Mortgage-backed securities; commercial Agency 250,152 — 250,152 — Corporate securities 60,768 — 60,768 — Asset-backed securities 45,156 — 45,156 — Equity and other securities, at fair value Mutual funds 2,983 2,983 — — Equity securities 5,781 — 5,096 685 Servicing assets 22,042 — — 22,042 Derivative assets 17,149 — 17,149 — Financial liabilities Derivative liabilities 18,133 — 18,133 —
Summary of Financial Assets Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs	The following table presents additional information about financial assets measured at fair value on recurring basis for which the Company used significant unobservable inputs (Level 3): Three Months Ended March 31, 2021 2020 2021 2020 Investment Securities Servicing Assets Balance, beginning of period $ 685 $ 700 $ 22,042 $ 19,471 Additions, net — — 1,603 1,393 Change in fair value 1 (20 ) (1,505 ) (3,064 ) Balance, end of period $ 686 $ 680 $ 22,140 $ 17,800
Summary of Unobservable Inputs Used in the Fair Value Measurements on Recurring Basis	The following Financial Instruments Valuation Technique Unobservable Inputs Range of Inputs Weighted Average Range Impact to Valuation from an Increased or Higher Input Value Single issuer trust preferred Discounted cash flow Discount rate 3.2% - 6.4% 4.6 % Decrease Servicing assets Discounted cash flow Prepayment speeds 0.1% - 31.6% 15.1 % Decrease Discount rate 0.7% - 49.9% 9.9 % Decrease Expected weighted average loan life 0.3 - 8.6 years 3.7 years Increase
Summary of Assets Measured at Fair Value on Non-Recurring Basis, Excluding Acquired Impaired Loans	The following tables summarize the Company’s assets that were measured at fair value on a non-recurring basis, excluding acquired impaired loans, as of March 31, 2021 and December 31, 2020 : Fair Value Measurements Using March 31, 2021 Fair Value Level 1 Level 2 Level 3 Non-recurring Impaired loans (excluding acquired impaired loans) Commercial real estate $ 47,012 $ — $ — $ 47,012 Residential real estate 1,608 — — 1,608 Commercial and industrial 24,482 — — 24,482 Assets held for sale 11,845 — — 11,845 Other real estate owned 5,952 — — 5,952 Fair Value Measurements Using December 31, 2020 Fair Value Level 1 Level 2 Level 3 Non-recurring Impaired loans (excluding acquired impaired loans) Commercial real estate $ 41,135 $ — $ — $ 41,135 Residential real estate 1,752 — — 1,752 Commercial and industrial 28,508 — — 28,508 Assets held for sale 13,023 — — 13,023 Other real estate owned 6,350 — — 6,350
Summary of Estimated Fair Values of Financial Instruments	The estimated not carried at fair value March 31, December 31, Fair Value 2021 2020 Hierarchy Level Carrying Amount Estimated Fair Value Carrying Amount Estimated Fair Value Financial assets Cash and due from banks 1 $ 47,101 $ 47,101 $ 41,432 $ 41,432 Interest bearing deposits with other banks 2 66,038 66,038 41,988 41,988 Securities held-to-maturity 2 3,892 4,066 4,395 4,573 Other restricted stock 2 19,057 19,057 10,507 10,507 Loans held for sale 3 28,584 32,408 7,924 8,848 Loans and lease receivables, net (less impaired loans at fair value 3 4,315,928 4,315,239 4,202,793 4,205,906 Accrued interest receivable 3 21,765 21,765 20,678 20,678 Financial liabilities Non-interest-bearing deposits 2 2,015,643 2,015,643 1,762,676 1,762,676 Interest-bearing deposits 2 3,008,897 3,009,901 2,989,355 2,990,735 Accrued interest payable 2 2,267 2,267 1,478 1,478 Paycheck Protection Program Liquidity Facility 2 387,647 387,647 371,907 371,907 Federal Home Loan Bank advances 2 329,000 329,000 234,000 234,000 Securities sold under repurchase agreement 2 33,072 33,072 41,994 41,994 Subordinated notes 2 73,386 75,832 73,342 76,627 Junior subordinated debentures 3 36,565 40,807 36,451 40,543

Derivative Instruments and He_2

Derivative Instruments and Hedge Activities (Tables)	3 Months Ended
	Mar. 31, 2021
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Summary of Derivative Financial Instruments and Classification on Consolidated Statements of Financial Condition	The following tables present the fair value of the Company’s derivative financial instruments and classification on the Consolidated Statements of Financial Condition as of March 31, 2021 and December 31, 2020: March 31, 2021 December 31, 2020 Fair Value Fair Value Notional Amount Other Assets Other Liabilities Notional Amount Other Assets Other Liabilities Derivatives designated as hedging instruments Interest rate swaps designated as cash flow hedges $ 350,000 $ 4,992 $ — $ — $ — $ — Derivatives not designated as hedging instruments Other interest rate derivatives 381,169 11,957 (12,368 ) 383,410 17,149 (18,116 ) Other credit derivatives 8,221 — (12 ) 8,437 — (17 ) Total derivatives $ 739,390 $ 16,949 $ (12,380 ) $ 391,847 $ 17,149 $ (18,133 )
Summary of Cash Flow Hedges	The following table reflects the cash flow hedges as of March 31, 2021: Notional amounts $ 350,000 Derivative assets fair value 4,992 Derivative liabilities fair value — Weighted average pay rates 0.93 % Weighted average maturity 5.6 years
Summary of Net Gains (Losses) Recorded in Accumulated Other Comprehensive Income (Loss) and Consolidated Statements of Operations Relating to Cash Flow Derivative Instruments	The following table reflects the net gains (losses) recorded in accumulated other comprehensive income (loss) and the Consolidated Statements of Operations relating to the cash flow derivative instruments for the three months ended: March 31, 2021 March 31, 2020 Amount of Loss Recognized in OCI Amount of Loss Reclassified from OCI to Income as an Increase to Interest Expense Amount of Gain (Loss) Recognized in Other Non-Interest Income Amount of Loss Recognized in OCI Amount of Loss Reclassified from OCI to Income as a Increase to Interest Expense Amount of Gain (Loss) Recognized in Other Non-Interest Income Interest rate swaps $ — $ (21 ) $ — $ — $ (21 ) $ —
Summary of Other Interest Rate Derivatives	The following table reflects other interest rate derivatives as of March 31, 2021: Notional amounts $ 381,169 Derivative assets fair value 11,957 Derivative liabilities fair value (12,368 ) Weighted average pay rates 4.43 % Weighted average receive rates 2.29 % Weighted average maturity 5.7 years
Summary of Amounts Included in Non-Interest Income in Consolidated Statements of Operations Relating to Derivative Instruments not Designated in Hedging Relationship	The following table reflects amounts included in non-interest income in the Consolidated Statements of Operations relating to derivative instruments that are not designated in a hedging relationship for the three months ended March 31, 2021 and 2020: Three Months Ended March 31, 2021 2020 Other interest rate derivatives $ 556 $ (723 ) Other credit derivatives 5 (12 ) Total $ 561 $ (735 )
Summary of Company's Interest Rate Derivative and Offsetting Positions	The Company records interest rate derivatives subject to master netting agreements at their gross value and does not offset derivative asset and liabilities on the Consolidated Statements of Financial Condition. The table below summarizes the Company’s interest rate derivatives and offsetting positions as of: March 31, 2021 December 31, 2020 Derivative Assets Fair Value Derivative Liabilities Fair Value Derivative Assets Fair Value Derivative Liabilities Fair Value Gross amounts recognized $ 16,949 $ (12,380 ) $ 17,149 $ (18,133 ) Less: Amounts offset in the Consolidated Statements of Financial Condition — — — — Net amount presented in the Consolidated Statements of Financial Condition $ 16,949 $ (12,380 ) $ 17,149 $ (18,133 ) Gross amounts not offset in the Consolidated Statements of Financial Condition Offsetting derivative positions (3,979 ) 3,979 — — Collateral posted (12,029 ) 8,401 (17,149 ) 18,133 Net credit exposure $ 941 $ — $ — $ —

Share-Based Compensation (Table

Share-Based Compensation (Tables)	3 Months Ended
	Mar. 31, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Summary of Stock Compensation Expense	The following table summarizes stock option compensation expense for the three months ended March 31, 2021 and 2020: Three Months Ended March 31, 2021 2020 Total share-based compensation (benefit) - stock options $ — $ 7 Income tax benefit (expense) — 2 Unrecognized compensation expense - stock options — — Weighted-average amortization period remaining 0.0 years 0.0 years
Restricted Shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Summary of Stock Compensation Expense	The following table summarizes restricted stock compensation expense for the three months ended March 31, 2021 and 2020: Three Months Ended March 31, 2021 2020 Total share-based compensation - restricted stock $ 783 $ 600 Income tax benefit 218 167 Unrecognized compensation expense 9,720 7,064 Weighted-average amortization period remaining 2.7 years 2.9 years
Omnibus Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Summary of Changes in Restricted Shares	The following table discloses the changes in restricted shares for the three months ended March 31, 2021: Omnibus Plan Number of Shares Weighted Average Grant Date Fair Value Beginning balance, January 1, 2021 383,539 $ 18.75 Granted 293,587 19.17 Vested (37,989 ) 17.52 Forfeited (5,707 ) 22.36 Ending balance outstanding at March 31, 2021 633,430 $ 18.99
BYB Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Summary of Activity in shares Subjected to Options and Weighted Average Exercise Prices	The following table discloses the activity in shares subject to options and the weighted average exercise prices, in actual dollars, for the three months ended March 31, 2021: BYB Plan Number of Shares Weighted Average Exercise Price Intrinsic Value Weighted Average Remaining Contractual Term (in Years) Beginning balance, January 1, 2021 1,390,579 $ 11.36 $ 5,724 4.4 Exercised (20,000 ) 16.25 $ 25 Expired — Ending balance outstanding at March 31, 2021 1,370,579 $ 11.29 $ 13,513 4.2 Exercisable at March 31, 2021 1,370,579 $ 11.29 $ 13,513 4.2
FEB Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Summary of Activity in shares Subjected to Options and Weighted Average Exercise Prices	The following table discloses the activity in shares subject to options under the FEB Plan and the weighted average exercise prices, in actual dollars, for the three months ended March 31, 2021: FEB Plan Number of Shares Weighted Average Exercise Price Intrinsic Value Weighted Average Remaining Contractual Term (in Years) Beginning balance, January 1, 2021 233,630 $ 11.52 $ 918 3.3 Exercised (35,908 ) $ 11.84 $ 161 Expired — Ending balance outstanding at March 31, 2021 197,722 $ 11.46 $ 1,915 3.6 Exercisable at March 31, 2021 197,722 $ 11.46 $ 1,915 3.6

Earnings per Share (Tables)

Earnings per Share (Tables)	3 Months Ended
	Mar. 31, 2021
Earnings Per Share [Abstract]
Schedule of Calculation of Basic and Diluted Earnings per Share	The following represent the calculation of basic and diluted earnings per share for the periods presented: Three Months Ended March 31, 2021 2020 Net income $ 21,798 $ 2,966 Less: Dividends on preferred shares 196 196 Net income available to common stockholders $ 21,602 $ 2,770 Weighted-average common stock outstanding: Weighted-average common stock outstanding (basic) 38,164,201 37,943,333 Incremental shares 751,281 720,325 Weighted-average common stock outstanding (dilutive) 38,915,482 38,663,658 Basic earnings per common share $ 0.57 $ 0.07 Diluted earnings per common share $ 0.56 $ 0.07

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	3 Months Ended
	Mar. 31, 2021
Equity [Abstract]
Summary of Preferred and Common Stock	A summary of the Company’s preferred and common stock at March 31, 2021 and December 31, 2020 is as follows: March 31, December 31, 2021 2020 Series B 7.5% fixed to floating non-cumulative perpetual preferred stock Par value $ 0.01 $ 0.01 Shares authorized 50,000 50,000 Shares issued 10,438 10,438 Shares outstanding 10,438 10,438 Common stock, voting Par value $ 0.01 $ 0.01 Shares authorized 150,000,000 150,000,000 Shares issued 39,106,222 38,736,540 Shares outstanding 38,641,851 38,618,054 Treasury shares 464,371 118,486

Consolidated Statements of Ch_2

Consolidated Statements of Changes in Accumulated Other Comprehensive Income (Loss) (Tables)	3 Months Ended
	Mar. 31, 2021
Accumulated Other Comprehensive Income Loss Net Of Tax [Abstract]
Schedule of Consolidated Statements of Changes in Accumulated Other Comprehensive Income (Loss)	The following table summarizes the changes in accumulated other comprehensive income (loss) for the three months ended March 31, 2021 and 2020: (dollars in thousands) Unrealized Gains (Losses) on Cash Flow Hedges Unrealized (Losses) on Available-for -Sale Securities Total Accumulated Other Comprehensive Income (Loss) Balance, January 1, 2020 $ (366 ) $ (334 ) $ (700 ) Other comprehensive income, net of tax 16 11,032 11,048 Balance, March 31, 2020 $ (350 ) $ 10,698 $ 10,348 Balance, January 1, 2021 $ (305 ) $ 18,352 $ 18,047 Other comprehensive income (loss), net of tax 3,617 (30,011 ) (26,394 ) Balance, March 31, 2021 $ 3,312 $ (11,659 ) $ (8,347 )

Basis of Presentation - Additio

Basis of Presentation - Additional Information (Details)	3 Months Ended
	Mar. 31, 2021segment
Organization Consolidation And Presentation Of Financial Statements [Abstract]
Number of reportable segments	1

Accounting Pronouncements Rec_2

Accounting Pronouncements Recently Adopted or Issued - Additional Information (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Jan. 01, 2021
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Operating lease liabilities	$ 12,273
ASU No. 2016-02
New Accounting Pronouncements Or Change In Accounting Principle [Line Items]
Operating right-of-use assets		$ 10,500
Operating lease liabilities		$ 11,700

Securities - Summary of Amortiz

Securities - Summary of Amortized Cost and Fair Values of Securities Available-for-sale (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	$ 1,688,715	$ 1,418,445
Available-for-sale Securities, Gross Unrealized Gains	15,463	29,834
Available-for-sale Securities, Gross Unrealized Losses	(28,271)	(1,049)
Available-for-sale Securities, Fair Value	1,675,907	1,447,230
U.S. Treasury Notes
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	13,475	23,468
Available-for-sale Securities, Gross Unrealized Gains	243	344
Available-for-sale Securities, Fair Value	13,718	23,812
U.S. Government Agencies
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	142,134	113,088
Available-for-sale Securities, Gross Unrealized Gains	721	600
Available-for-sale Securities, Gross Unrealized Losses	(3,270)	(137)
Available-for-sale Securities, Fair Value	139,585	113,551
Obligations of States, Municipalities, and Political Subdivisions
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	102,966	135,513
Available-for-sale Securities, Gross Unrealized Gains	3,854	6,991
Available-for-sale Securities, Gross Unrealized Losses	(292)	(85)
Available-for-sale Securities, Fair Value	106,528	142,419
Agency, Residential Mortgage-Backed Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	985,375	764,951
Available-for-sale Securities, Gross Unrealized Gains	4,802	13,645
Available-for-sale Securities, Gross Unrealized Losses	(19,085)	(205)
Available-for-sale Securities, Fair Value	971,092	778,391
Non-Agency, Residential Mortgage-Backed Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	68,562	32,654
Available-for-sale Securities, Gross Unrealized Gains	149	332
Available-for-sale Securities, Gross Unrealized Losses	(761)	(5)
Available-for-sale Securities, Fair Value	67,950	32,981
Agency, Commercial Mortgage-Backed Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	269,997	244,496
Available-for-sale Securities, Gross Unrealized Gains	4,009	6,046
Available-for-sale Securities, Gross Unrealized Losses	(4,795)	(390)
Available-for-sale Securities, Fair Value	269,211	250,152
Corporate Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	61,018	59,020
Available-for-sale Securities, Gross Unrealized Gains	1,602	1,850
Available-for-sale Securities, Gross Unrealized Losses	(68)	(102)
Available-for-sale Securities, Fair Value	62,552	60,768
Asset-Backed Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Amortized Cost	45,188	45,255
Available-for-sale Securities, Gross Unrealized Gains	83	26
Available-for-sale Securities, Gross Unrealized Losses		(125)
Available-for-sale Securities, Fair Value	$ 45,271	$ 45,156

Securities - Summary of Amort_2

Securities - Summary of Amortized Cost and Fair Values of Securities Held-to-maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Schedule Of Held To Maturity Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	$ 3,892	$ 4,395
Held-to-maturity Securities, Gross Unrealized Gains	174	178
Held-to-maturity Securities, Fair Value	4,066	4,573
Obligations of States, Municipalities, and Political Subdivisions
Schedule Of Held To Maturity Securities [Line Items]
Held-to-maturity Securities, Amortized Cost	3,892	4,395
Held-to-maturity Securities, Gross Unrealized Gains	174	178
Held-to-maturity Securities, Fair Value	$ 4,066	$ 4,573

Securities - Additional Informa

Securities - Additional Information (Details)	3 Months Ended
	Mar. 31, 2021USD ($)Security	Mar. 31, 2020USD ($)	Dec. 31, 2020USD ($)
Schedule Of Investments [Line Items]
Trading securities	$ 0		$ 0
Net gains reclassified from accumulated other comprehensive income earnings	1,400,000	$ 1,400,000
Investment securities posted as collateral	386,700,000		731,800,000
Carrying amount of securities pledged as collateral	$ 386,700,000		$ 323,900,000
Minimum
Schedule Of Investments [Line Items]
Percentage of shareholders equity for which securities holdings exceeds for no issuer other than U.S. Government and agencies	10.00%		10.00%
Federal Home Loan Bank Advances
Schedule Of Investments [Line Items]
Carrying amount of securities pledged as collateral	$ 0		$ 0
Public Fund Deposits
Schedule Of Investments [Line Items]
Carrying amount of securities pledged as collateral	310,900,000		245,100,000
Customer Repurchase Agreements
Schedule Of Investments [Line Items]
Carrying amount of securities pledged as collateral	$ 59,600,000		$ 64,100,000
Available-for-sale Securities
Schedule Of Investments [Line Items]
Investment securities with unrealized losses | Security	108
Held-to-maturity Securities
Schedule Of Investments [Line Items]
Investment securities with unrealized losses | Security	0

Securities - Summary of Gross U

Securities - Summary of Gross Unrealized Losses and Fair Values, Aggregated by Investment Category and Length of Individual Securities Continuous Unrealized Loss Position Available-for-sale (Details) $ in Thousands	Mar. 31, 2021USD ($)Security	Dec. 31, 2020USD ($)Security
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Number of Securities | Security	108	37
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 1,045,389	$ 170,971
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(28,260)	(1,016)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	439	5,424
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	(11)	(33)
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	1,045,828	176,395
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (28,271)	$ (1,049)
U.S. Government Agencies
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Number of Securities | Security	13	5
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 106,908	$ 30,639
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(3,270)	(137)
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	106,908	30,639
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (3,270)	$ (137)
Obligations of States, Municipalities, and Political Subdivisions
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Number of Securities | Security	8	2
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 13,689	$ 210
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(292)	(85)
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	13,689	210
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (292)	$ (85)
Agency, Residential Mortgage-Backed Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Number of Securities | Security	59	8
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 781,666	$ 45,253
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(19,074)	(198)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value	439	472
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses	(11)	(7)
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	782,105	45,725
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (19,085)	$ (205)
Non-Agency, Residential Mortgage-Backed Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Number of Securities | Security	4	2
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 28,484	$ 3,963
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(761)	(5)
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	28,484	3,963
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (761)	$ (5)
Agency, Commercial Mortgage-Backed Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Number of Securities | Security	20	8
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 106,172	$ 55,554
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(4,795)	(390)
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	106,172	55,554
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (4,795)	$ (390)
Corporate Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Number of Securities | Security	4	6
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value	$ 8,470	$ 10,916
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(68)	(102)
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value	8,470	10,916
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses	$ (68)	$ (102)
Asset-Backed Securities
Schedule Of Available For Sale Securities [Line Items]
Available-for-sale Securities, Continuous Unrealized Loss Position, Number of Securities | Security		6
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Fair Value		$ 24,436
Available-for-sale Securities, Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses		(99)
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Fair Value		4,952
Available-for-sale Securities, Continuous Unrealized Loss Position, 12 Months or Longer, Unrealized Losses		(26)
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Fair Value		29,388
Available-for-sale Securities, Continuous Unrealized Loss Position, Total Unrealized Losses		$ (125)

Securities - Summary of Proceed

Securities - Summary of Proceeds From Sales of Securities Available-for-sale and Associated Gains and Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Available For Sale Securities Gross Realized Gain Loss [Abstract]
Proceeds	$ 89,301	$ 45,417
Gross gains	1,626	1,457
Gross losses	$ 164	$ 82

Securities - Schedule of Amorti

Securities - Schedule of Amortized Cost and Fair Value of Debt Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Available-for-sale Securities Debt Maturities, Amortized Cost [Abstract]
Available-for-sale Securities, Due in one year or less, Amortized Cost	$ 21,786
Available-for-sale Securities, Due from one to five years, Amortized Cost	34,665
Available-for-sale Securities, Due from five to ten years, Amortized Cost	212,875
Available-for-sale Securities, Due after ten years, Amortized Cost	95,455
Available-for-sale Securities, Amortized Cost	1,688,715	$ 1,418,445
Held-to-maturity Securities Debt Maturities, Amortized Cost [Abstract]
Held-to-maturity Securities, Due from one to five years, Amortized Cost	3,892
Held-to-maturity Securities, Amortized Cost	3,892	4,395
Available-for-sale Securities Debt Maturities, Fair Value [Abstract]
Available-for-sale Securities, Due in one year or less, Fair Value	22,111
Available-for-sale Securities, Due from one to five years, Fair Value	35,947
Available-for-sale Securities, Due from five to ten years, Fair Value	213,519
Available-for-sale Securities, Due after ten years, Fair Value	96,077
Available-for-sale Securities, Fair Value, Total	1,675,907	1,447,230
Held-to-maturity Securities Debt Maturities, Fair Value [Abstract]
Held-to-maturity Securities, Due from one to five years, Fair Value	4,066
Held-to-maturity securities, Fair Value, Total	4,066	$ 4,573
Mortgage-Backed Securities
Available-for-sale Securities Debt Maturities, Amortized Cost [Abstract]
Available-for-sale Securities, Not due at single maturity, Amortized Cost	1,323,934
Available-for-sale Securities Debt Maturities, Fair Value [Abstract]
Available-for-sale Securities, Not due at single maturity, Fair Value	$ 1,308,253

Loan and Lease Receivables - Sc

Loan and Lease Receivables - Schedule of Outstanding Loan and Lease Receivables (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	$ 4,461,343	$ 4,342,453
Net unamortized deferred fees and costs	(10,615)	(5,764)
Initial direct costs	3,892	3,846
Allowance for loan and lease losses	(65,590)	(66,347)	$ (41,840)	$ (31,936)
Net loans and leases	4,389,030	4,274,188
Lease financing receivables
Net minimum lease payments	259,178	234,472
Unguaranteed residual values	12,467	8,690
Unearned income	(21,206)	(19,867)
Total lease financing receivables	250,439	223,295
Initial direct costs	3,892	3,846
Lease financial receivables before allowance for lease losses	254,331	227,141
Commercial Real Estate
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	1,428,875	1,416,731
Allowance for loan and lease losses	(20,498)	(19,584)	(11,851)	(7,965)
Residential Real Estate
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	544,741	569,387
Allowance for loan and lease losses	(2,091)	(2,400)	(2,778)	(1,990)
Construction, Land Development, and Other Land
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	241,809	231,602
Allowance for loan and lease losses	(785)	(1,352)	(1,004)	(610)
Commercial and Industrial
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	1,362,741	1,372,452
Allowance for loan and lease losses	(40,302)	(41,183)	(24,139)	(19,377)
Paycheck Protection Program
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	631,170	527,044
Installment and Other
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	1,568	1,942
Allowance for loan and lease losses	(12)	(15)	(53)	(50)
Lease Financing Receivables
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	250,439	223,295
Allowance for loan and lease losses	$ (1,902)	$ (1,813)	$ (2,015)	$ (1,944)

Loan and Lease Receivables - Ad

Loan and Lease Receivables - Additional Information (Details) - USD ($)	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	$ 4,461,343,000	$ 4,342,453,000
Loans held for sale pledged as security for borrowings	2,200,000,000	2,300,000,000
Allowance for loan and lease losses	65,590,000	66,347,000	$ 41,840,000	$ 31,936,000
Acquired Impaired Loans
Accounts Notes And Loans Receivable [Line Items]
Allowance for loan and lease losses	4,200,000	6,500,000
Installment and Other
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	1,568,000	1,942,000
Overdraft deposits reclassified as loans	391,000	496,000
Allowance for loan and lease losses	12,000	15,000	$ 53,000	$ 50,000
U.S. Government Guaranteed Loans
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	760,600,000	635,000,000
Discount on the unguaranteed portion of government guaranteed loans	$ 28,500,000	$ 28,300,000

Loan and Lease Receivables - Su

Loan and Lease Receivables - Summary of Minimum Annual Lease Payments for Lease Financing Receivables (Details) $ in Thousands	Mar. 31, 2021USD ($)
Receivables [Abstract]
2021	$ 68,542
2022	77,452
2023	56,185
2024	34,356
2025	19,047
Thereafter	3,596
Total	$ 259,178

Loan and Lease Receivables - _2

Loan and Lease Receivables - Summary of Balances for Each Respective Loan and Lease Category (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	$ 4,454,620	$ 4,340,535	$ 3,860,259
Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	3,849,489	3,668,460
Acquired Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	181,367	201,817
Acquired Non-Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	423,764	470,258
Commercial Real Estate
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	1,431,668	1,421,670	1,294,959
Commercial Real Estate | Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	1,064,151	1,017,587
Commercial Real Estate | Acquired Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	96,059	108,484
Commercial Real Estate | Acquired Non-Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	271,458	295,599
Residential Real Estate
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	545,279	572,271	693,997
Residential Real Estate | Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	399,958	414,220
Residential Real Estate | Acquired Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	74,283	78,840
Residential Real Estate | Acquired Non-Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	71,038	79,211
Construction, Land Development, and Other Land
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	240,324	230,733	277,776
Construction, Land Development, and Other Land | Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	238,122	226,408
Construction, Land Development, and Other Land | Acquired Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	1,992	4,113
Construction, Land Development, and Other Land | Acquired Non-Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	210	212
Commercial and Industrial
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	1,364,396	1,368,900	1,414,559
Commercial and Industrial | Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	1,285,759	1,276,527
Commercial and Industrial | Acquired Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	8,842	10,178
Commercial and Industrial | Acquired Non-Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	69,795	82,195
Paycheck Protection Program
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	617,006	517,815
Paycheck Protection Program | Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	617,006	517,815
Installment and Other
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	1,616	2,005	5,721
Installment and Other | Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	1,094	1,267
Installment and Other | Acquired Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	191	202
Installment and Other | Acquired Non-Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	331	536
Lease Financing Receivables
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	254,331	227,141	$ 173,247
Lease Financing Receivables | Originated
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	243,399	214,636
Lease Financing Receivables | Acquired Non-Impaired
Accounts Notes And Loans Receivable [Line Items]
Total loans and leases	$ 10,932	$ 12,505

Loan and Lease Receivables - _3

Loan and Lease Receivables - Summary of Outstanding Balance and Carrying Amount of All Acquired Impaired Loans (Details) - Acquired Impaired Loans - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Accounts Notes And Loans Receivable [Line Items]
Unpaid Principal Balance	$ 284,428	$ 309,838
Carrying Value	181,367	201,817
Commercial Real Estate
Accounts Notes And Loans Receivable [Line Items]
Unpaid Principal Balance	138,823	154,233
Carrying Value	96,059	108,484
Residential Real Estate
Accounts Notes And Loans Receivable [Line Items]
Unpaid Principal Balance	121,084	126,086
Carrying Value	74,283	78,840
Construction, Land Development, and Other Land
Accounts Notes And Loans Receivable [Line Items]
Unpaid Principal Balance	9,581	12,677
Carrying Value	1,992	4,113
Commercial and Industrial
Accounts Notes And Loans Receivable [Line Items]
Unpaid Principal Balance	14,050	15,925
Carrying Value	8,842	10,178
Installment and Other
Accounts Notes And Loans Receivable [Line Items]
Unpaid Principal Balance	890	917
Carrying Value	$ 191	$ 202

Loan and Lease Receivables - _4

Loan and Lease Receivables - Summary of Changes in Accretable Yield for Acquired Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Receivables [Abstract]
Beginning balance	$ 27,696	$ 40,009
Accretion to interest income	(3,707)	(5,205)
Reclassification from nonaccretable difference, net	1,273	2,233
Ending balance	$ 25,262	$ 37,037

Loan and Lease Receivables - _5

Loan and Lease Receivables - Schedule of Unpaid Principal Balance and Carrying Value for Acquired Non-impaired Loans and Leases (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Accounts Notes And Loans Receivable [Line Items]
Loans and leases	$ 4,454,620	$ 4,340,535	$ 3,860,259
Acquired Non-impaired Loans and Leases
Accounts Notes And Loans Receivable [Line Items]
Unpaid Principal Balance	434,163	481,612
Loans and leases	423,764	470,258
Commercial Real Estate
Accounts Notes And Loans Receivable [Line Items]
Loans and leases	1,431,668	1,421,670	1,294,959
Commercial Real Estate | Acquired Non-impaired Loans and Leases
Accounts Notes And Loans Receivable [Line Items]
Unpaid Principal Balance	277,282	302,091
Loans and leases	271,458	295,599
Residential Real Estate
Accounts Notes And Loans Receivable [Line Items]
Loans and leases	545,279	572,271	693,997
Residential Real Estate | Acquired Non-impaired Loans and Leases
Accounts Notes And Loans Receivable [Line Items]
Unpaid Principal Balance	71,838	80,104
Loans and leases	71,038	79,211
Construction, Land Development, and Other Land
Accounts Notes And Loans Receivable [Line Items]
Loans and leases	240,324	230,733	277,776
Construction, Land Development, and Other Land | Acquired Non-impaired Loans and Leases
Accounts Notes And Loans Receivable [Line Items]
Unpaid Principal Balance	276	278
Loans and leases	210	212
Commercial and Industrial
Accounts Notes And Loans Receivable [Line Items]
Loans and leases	1,364,396	1,368,900	1,414,559
Commercial and Industrial | Acquired Non-impaired Loans and Leases
Accounts Notes And Loans Receivable [Line Items]
Unpaid Principal Balance	72,122	84,608
Loans and leases	69,795	82,195
Installment and Other
Accounts Notes And Loans Receivable [Line Items]
Loans and leases	1,616	2,005	5,721
Installment and Other | Acquired Non-impaired Loans and Leases
Accounts Notes And Loans Receivable [Line Items]
Unpaid Principal Balance	344	553
Loans and leases	331	536
Lease Financing Receivables
Accounts Notes And Loans Receivable [Line Items]
Loans and leases	254,331	227,141	$ 173,247
Lease Financing Receivables | Acquired Non-impaired Loans and Leases
Accounts Notes And Loans Receivable [Line Items]
Unpaid Principal Balance	12,301	13,978
Loans and leases	$ 10,932	$ 12,505

Allowance for Loan and Lease _3

Allowance for Loan and Lease Losses and Reserve for Unfunded Commitments - Summary of Allowance for Loan and Lease Losses and Corresponding Loan and Lease Balances (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Allowance for loan and lease losses
Beginning balance	$ 66,347	$ 31,936
Provisions (release)	4,367	14,455
Charge-offs	(5,466)	(4,972)
Recoveries	342	421
Ending balance	65,590	41,840
Ending balance:
Individually evaluated for impairment			$ 26,334		$ 13,435
Collectively evaluated for impairment			35,101		24,103
Allowance for loan and lease losses	66,347	41,840	65,590	$ 66,347	41,840
Loans and leases ending balance:
Individually evaluated for impairment			99,436		81,437
Collectively evaluated for impairment			4,173,817		3,535,394
Total loans and leases			4,454,620	4,340,535	3,860,259
Loans Acquired with Deteriorated Credit Quality
Ending balance:
Loans acquired with deteriorated credit quality			4,155		4,302
Loans and leases ending balance:
Loans acquired with deteriorated credit quality			181,367		243,428
Commercial Real Estate
Allowance for loan and lease losses
Beginning balance	19,584	7,965
Provisions (release)	2,606	4,422
Charge-offs	(1,877)	(552)
Recoveries	185	16
Ending balance	20,498	11,851
Ending balance:
Individually evaluated for impairment			7,409		3,634
Collectively evaluated for impairment			10,881		6,115
Allowance for loan and lease losses	20,498	11,851	20,498	19,584	11,851
Loans and leases ending balance:
Individually evaluated for impairment			54,421		32,974
Collectively evaluated for impairment			1,281,188		1,134,090
Total loans and leases			1,431,668	1,421,670	1,294,959
Commercial Real Estate | Loans Acquired with Deteriorated Credit Quality
Ending balance:
Loans acquired with deteriorated credit quality			2,208		2,102
Loans and leases ending balance:
Loans acquired with deteriorated credit quality			96,059		127,895
Residential Real Estate
Allowance for loan and lease losses
Beginning balance	2,400	1,990
Provisions (release)	(302)	784
Charge-offs	(11)	(5)
Recoveries	4	9
Ending balance	2,091	2,778
Ending balance:
Individually evaluated for impairment			101		92
Collectively evaluated for impairment			1,460		1,685
Allowance for loan and lease losses	2,091	2,778	2,091	2,400	2,778
Loans and leases ending balance:
Individually evaluated for impairment			1,709		1,960
Collectively evaluated for impairment			469,287		597,839
Total loans and leases			545,279	572,271	693,997
Residential Real Estate | Loans Acquired with Deteriorated Credit Quality
Ending balance:
Loans acquired with deteriorated credit quality			530		1,001
Loans and leases ending balance:
Loans acquired with deteriorated credit quality			74,283		94,198
Construction, Land Development, and Other Land
Allowance for loan and lease losses
Beginning balance	1,352	610
Provisions (release)	(241)	394
Charge-offs	(326)
Ending balance	785	1,004
Ending balance:
Collectively evaluated for impairment			780		915
Allowance for loan and lease losses	785	1,004	785	1,352	1,004
Loans and leases ending balance:
Individually evaluated for impairment					2,577
Collectively evaluated for impairment			238,332		269,908
Total loans and leases			240,324	230,733	277,776
Construction, Land Development, and Other Land | Loans Acquired with Deteriorated Credit Quality
Ending balance:
Loans acquired with deteriorated credit quality			5		89
Loans and leases ending balance:
Loans acquired with deteriorated credit quality			1,992		5,291
Commercial and Industrial
Allowance for loan and lease losses
Beginning balance	41,183	19,377
Provisions (release)	1,947	8,546
Charge-offs	(2,888)	(3,958)
Recoveries	60	174
Ending balance	40,302	24,139
Ending balance:
Individually evaluated for impairment			18,824		9,709
Collectively evaluated for impairment			20,066		13,320
Allowance for loan and lease losses	40,302	24,139	40,302	41,183	24,139
Loans and leases ending balance:
Individually evaluated for impairment			43,306		43,926
Collectively evaluated for impairment			1,312,248		1,354,825
Total loans and leases			1,364,396	1,368,900	1,414,559
Commercial and Industrial | Loans Acquired with Deteriorated Credit Quality
Ending balance:
Loans acquired with deteriorated credit quality			1,412		1,110
Loans and leases ending balance:
Loans acquired with deteriorated credit quality			8,842		15,808
Paycheck Protection Program
Loans and leases ending balance:
Collectively evaluated for impairment			617,006
Total loans and leases			617,006	517,815
Installment and Other
Allowance for loan and lease losses
Beginning balance	15	50
Provisions (release)	(3)	3
Ending balance	12	53
Ending balance:
Collectively evaluated for impairment			12		53
Allowance for loan and lease losses	12	53	12	15	53
Loans and leases ending balance:
Collectively evaluated for impairment			1,425		5,485
Total loans and leases			1,616	2,005	5,721
Installment and Other | Loans Acquired with Deteriorated Credit Quality
Loans and leases ending balance:
Loans acquired with deteriorated credit quality			191		236
Lease Financing Receivables
Allowance for loan and lease losses
Beginning balance	1,813	1,944
Provisions (release)	360	306
Charge-offs	(364)	(457)
Recoveries	93	222
Ending balance	1,902	2,015
Ending balance:
Collectively evaluated for impairment			1,902		2,015
Allowance for loan and lease losses	$ 1,902	$ 2,015	1,902	1,813	2,015
Loans and leases ending balance:
Collectively evaluated for impairment			254,331		173,247
Total loans and leases			$ 254,331	$ 227,141	$ 173,247

Allowance for Loan and Lease _4

Allowance for Loan and Lease Losses and Reserve for Unfunded Commitments - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Loans And Leases Receivable Disclosure [Line Items]
Increase (decrease) in allowance for loan and lease losses	$ (757,000)	$ 9,900,000
Commitments outstanding on troubled debt restructurings	0		$ 0
Recorded investment in troubled debt restructurings that subsequently defaulted within twelve months	0	0
Reserve for unfunded commitments	1,800,000		$ 1,900,000
Provisions for (credits to) unfunded commitments	120,000	198,000
Charge-offs or recoveries related to reserve for unfunded commitments	$ 0	0
Paycheck Protection Program
Loans And Leases Receivable Disclosure [Line Items]
Percentage of guarantee on SBA	100.00%
Acquired Impaired Loans
Loans And Leases Receivable Disclosure [Line Items]
Increase (decrease) in allowance for loan and lease losses	$ (2,300,000)	1,500,000
Individually Evaluated For Impairment
Loans And Leases Receivable Disclosure [Line Items]
Increase (decrease) in allowance for loan and lease losses	2,400,000	2,700,000
Collectively Evaluated For Impairment
Loans And Leases Receivable Disclosure [Line Items]
Increase (decrease) in allowance for loan and lease losses	$ (824,000)	$ 5,600,000

Allowance for Loan and Lease _5

Allowance for Loan and Lease Losses and Reserve for Unfunded Commitments - Summary of Recorded Investment, Unpaid Principal Balance, and Related Allowance for Loans and Leases Considered Impaired (Details) - Loans Excluding Acquired Impaired Loans - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable Impaired [Line Items]
Recorded Investment	$ 99,436	$ 95,355
Unpaid Principal Balance	108,559	103,564
Related Allowance	26,334	23,960
Commercial Real Estate
Financing Receivable Impaired [Line Items]
Recorded Investment, With no related allowance recorded	28,685	32,473
Recorded Investment, With an allowance recorded	25,736	13,696
Unpaid Principal Balance, With no related allowance recorded	30,853	34,792
Unpaid Principal Balance, With an allowance recorded	27,275	14,919
Related Allowance	7,409	5,034
Residential Real Estate
Financing Receivable Impaired [Line Items]
Recorded Investment, With no related allowance recorded	1,496	1,558
Recorded Investment, With an allowance recorded	213	272
Unpaid Principal Balance, With no related allowance recorded	1,609	1,644
Unpaid Principal Balance, With an allowance recorded	215	274
Related Allowance	101	78
Commercial and Industrial
Financing Receivable Impaired [Line Items]
Recorded Investment, With no related allowance recorded	13,585	17,944
Recorded Investment, With an allowance recorded	29,721	29,412
Unpaid Principal Balance, With no related allowance recorded	16,218	19,917
Unpaid Principal Balance, With an allowance recorded	32,389	32,018
Related Allowance	$ 18,824	$ 18,848

Allowance for Loan and Lease _6

Allowance for Loan and Lease Losses and Reserve for Unfunded Commitments - Summary of Average Recorded Investment and Interest Income Recognized for Loans and Leases Considered Impaired (Details) - Loans Excluding Acquired Impaired Loans - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Financing Receivable Impaired [Line Items]
Average Recorded Investment	$ 108,174	$ 75,769
Interest Income Recognized	894	993
Commercial Real Estate
Financing Receivable Impaired [Line Items]
Average Recorded Investment, With no related allowance recorded	34,961	18,728
Average Recorded Investment, With an allowance recorded	22,178	13,177
Interest Income Recognized, With no related allowance recorded	311	277
Interest Income Recognized, With an allowance recorded	161	136
Residential Real Estate
Financing Receivable Impaired [Line Items]
Average Recorded Investment, With no related allowance recorded	3,080	1,221
Average Recorded Investment, With an allowance recorded	298	771
Interest Income Recognized, With no related allowance recorded	18
Interest Income Recognized, With an allowance recorded	2	14
Commercial and Industrial
Financing Receivable Impaired [Line Items]
Average Recorded Investment, With no related allowance recorded	16,568	14,368
Average Recorded Investment, With an allowance recorded	31,089	24,668
Interest Income Recognized, With no related allowance recorded	129	105
Interest Income Recognized, With an allowance recorded	$ 273	441
Construction, Land Development, and Other Land
Financing Receivable Impaired [Line Items]
Average Recorded Investment, With no related allowance recorded		2,836
Interest Income Recognized, With no related allowance recorded		$ 20

Allowance for Loan and Lease _7

Allowance for Loan and Lease Losses and Reserve for Unfunded Commitments - Summary of Risk Rating Categories of Loans and Leases Considered for Inclusion in Allowance for Loan and Lease Losses Calculation (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	$ 4,454,620	$ 4,340,535	$ 3,860,259
Commercial Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	1,431,668	1,421,670	1,294,959
Residential Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	545,279	572,271	693,997
Construction, Land Development, and Other Land
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	240,324	230,733	277,776
Commercial and Industrial
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	1,364,396	1,368,900	1,414,559
Paycheck Protection Program
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	617,006	517,815
Installment and Other
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	1,616	2,005	5,721
Lease Financing Receivables
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	254,331	227,141	$ 173,247
Loans Excluding Acquired Impaired Loans
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	4,273,253	4,138,718
Loans Excluding Acquired Impaired Loans | Commercial Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	1,335,609	1,313,186
Loans Excluding Acquired Impaired Loans | Residential Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	470,996	493,431
Loans Excluding Acquired Impaired Loans | Construction, Land Development, and Other Land
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	238,332	226,620
Loans Excluding Acquired Impaired Loans | Commercial and Industrial
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	1,355,554	1,358,722
Loans Excluding Acquired Impaired Loans | Paycheck Protection Program
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	617,006	517,815
Loans Excluding Acquired Impaired Loans | Installment and Other
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	1,425	1,803
Loans Excluding Acquired Impaired Loans | Lease Financing Receivables
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	254,331	227,141
Loans Excluding Acquired Impaired Loans | Pass
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	3,667,713	3,477,922
Loans Excluding Acquired Impaired Loans | Pass | Commercial Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	1,088,465	1,064,623
Loans Excluding Acquired Impaired Loans | Pass | Residential Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	444,196	463,103
Loans Excluding Acquired Impaired Loans | Pass | Construction, Land Development, and Other Land
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	192,326	180,458
Loans Excluding Acquired Impaired Loans | Pass | Commercial and Industrial
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	1,074,221	1,027,399
Loans Excluding Acquired Impaired Loans | Pass | Paycheck Protection Program
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	617,006	517,815
Loans Excluding Acquired Impaired Loans | Pass | Installment and Other
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	1,333	1,706
Loans Excluding Acquired Impaired Loans | Pass | Lease Financing Receivables
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	250,166	222,818
Loans Excluding Acquired Impaired Loans | Watch
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	407,202	428,702
Loans Excluding Acquired Impaired Loans | Watch | Commercial Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	142,956	134,381
Loans Excluding Acquired Impaired Loans | Watch | Residential Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	22,937	22,086
Loans Excluding Acquired Impaired Loans | Watch | Construction, Land Development, and Other Land
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	46,006	46,162
Loans Excluding Acquired Impaired Loans | Watch | Commercial and Industrial
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	195,166	225,930
Loans Excluding Acquired Impaired Loans | Watch | Installment and Other
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	92	96
Loans Excluding Acquired Impaired Loans | Watch | Lease Financing Receivables
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	45	47
Loans Excluding Acquired Impaired Loans | Special Mention
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	94,811	123,322
Loans Excluding Acquired Impaired Loans | Special Mention | Commercial Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	49,714	60,022
Loans Excluding Acquired Impaired Loans | Special Mention | Residential Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	1,702	3,795
Loans Excluding Acquired Impaired Loans | Special Mention | Commercial and Industrial
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	41,025	56,784
Loans Excluding Acquired Impaired Loans | Special Mention | Lease Financing Receivables
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	2,370	2,721
Loans Excluding Acquired Impaired Loans | Substandard
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	103,059	108,172
Loans Excluding Acquired Impaired Loans | Substandard | Commercial Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	54,474	54,160
Loans Excluding Acquired Impaired Loans | Substandard | Residential Real Estate
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	2,161	4,447
Loans Excluding Acquired Impaired Loans | Substandard | Commercial and Industrial
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	45,142	48,609
Loans Excluding Acquired Impaired Loans | Substandard | Installment and Other
Financing Receivable Recorded Investment [Line Items]
Total loans and leases		1
Loans Excluding Acquired Impaired Loans | Substandard | Lease Financing Receivables
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	1,282	955
Loans Excluding Acquired Impaired Loans | Doubtful
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	468	600
Loans Excluding Acquired Impaired Loans | Doubtful | Lease Financing Receivables
Financing Receivable Recorded Investment [Line Items]
Total loans and leases	$ 468	$ 600

Allowance for Loan and Lease _8

Allowance for Loan and Lease Losses and Reserve for Unfunded Commitments - Summary of Contractual Delinquency Information (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans and leases	$ 4,454,620	$ 4,340,535	$ 3,860,259
Commercial Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans and leases	1,431,668	1,421,670	1,294,959
Residential Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans and leases	545,279	572,271	693,997
Construction, Land Development, and Other Land
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans and leases	240,324	230,733	277,776
Commercial and Industrial
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans and leases	1,364,396	1,368,900	1,414,559
Paycheck Protection Program
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans and leases	617,006	517,815
Installment and Other
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans and leases	1,616	2,005	5,721
Lease Financing Receivables
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans and leases	254,331	227,141	$ 173,247
Acquired Non-Impaired and Originated Loans
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	64,827	55,716
Non-accrual	37,084	41,103
Current	4,208,426	4,083,002
Total loans and leases	4,273,253	4,138,718
Acquired Non-Impaired and Originated Loans | 30-59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	25,634	8,753
Acquired Non-Impaired and Originated Loans | 60-89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	2,109	5,860
Acquired Non-Impaired and Originated Loans | Commercial Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	33,827	21,707
Non-accrual	16,198	15,969
Current	1,301,782	1,291,479
Total loans and leases	1,335,609	1,313,186
Acquired Non-Impaired and Originated Loans | Commercial Real Estate | 30-59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	17,629	1,544
Acquired Non-Impaired and Originated Loans | Commercial Real Estate | 60-89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		4,194
Acquired Non-Impaired and Originated Loans | Residential Real Estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	4,388	3,615
Non-accrual	2,078	1,929
Current	466,608	489,816
Total loans and leases	470,996	493,431
Acquired Non-Impaired and Originated Loans | Residential Real Estate | 30-59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	1,310	1,686
Acquired Non-Impaired and Originated Loans | Residential Real Estate | 60-89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	1,000
Acquired Non-Impaired and Originated Loans | Construction, Land Development, and Other Land
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	1,760
Current	236,572	226,620
Total loans and leases	238,332	226,620
Acquired Non-Impaired and Originated Loans | Construction, Land Development, and Other Land | 30-59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	1,760
Acquired Non-Impaired and Originated Loans | Commercial and Industrial
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	21,229	27,747
Non-accrual	17,565	21,936
Current	1,334,325	1,330,975
Total loans and leases	1,355,554	1,358,722
Acquired Non-Impaired and Originated Loans | Commercial and Industrial | 30-59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	3,076	4,521
Acquired Non-Impaired and Originated Loans | Commercial and Industrial | 60-89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	588	1,290
Acquired Non-Impaired and Originated Loans | Paycheck Protection Program
Financing Receivable Recorded Investment Past Due [Line Items]
Current	617,006	517,815
Total loans and leases	617,006	517,815
Acquired Non-Impaired and Originated Loans | Installment and Other
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		7
Non-accrual		1
Current	1,425	1,796
Total loans and leases	1,425	1,803
Acquired Non-Impaired and Originated Loans | Installment and Other | 30-59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due		6
Acquired Non-Impaired and Originated Loans | Lease Financing Receivables
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	3,623	2,640
Non-accrual	1,243	1,268
Current	250,708	224,501
Total loans and leases	254,331	227,141
Acquired Non-Impaired and Originated Loans | Lease Financing Receivables | 30-59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	1,859	996
Acquired Non-Impaired and Originated Loans | Lease Financing Receivables | 60-89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total Past Due	$ 521	$ 376

Allowance for Loan and Lease _9

Allowance for Loan and Lease Losses and Reserve for Unfunded Commitments - Summary of TDR's by Loan Category (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021USD ($)Loan	Dec. 31, 2020USD ($)Loan
Financing Receivable Modifications [Line Items]
Number of Loans | Loan	28	30
Pre-Modification Outstanding Recorded Investment	$ 8,830	$ 8,524
Post-Modification Outstanding Recorded Investment	8,304	8,145
Charge-offs	526	379
Specific Reserves	$ 2,443	$ 3,441
Accruing
Financing Receivable Modifications [Line Items]
Number of Loans | Loan	13	12
Pre-Modification Outstanding Recorded Investment	$ 2,719	$ 2,495
Post-Modification Outstanding Recorded Investment	2,719	2,495
Specific Reserves	$ 279	$ 182
Non-accruing
Financing Receivable Modifications [Line Items]
Number of Loans | Loan	15	18
Pre-Modification Outstanding Recorded Investment	$ 6,111	$ 6,029
Post-Modification Outstanding Recorded Investment	5,585	5,650
Charge-offs	526	379
Specific Reserves	$ 2,164	$ 3,259
Commercial Real Estate | Accruing
Financing Receivable Modifications [Line Items]
Number of Loans | Loan	9	8
Pre-Modification Outstanding Recorded Investment	$ 2,425	$ 2,187
Post-Modification Outstanding Recorded Investment	2,425	2,187
Specific Reserves	$ 205	$ 104
Commercial Real Estate | Non-accruing
Financing Receivable Modifications [Line Items]
Number of Loans | Loan	5	4
Pre-Modification Outstanding Recorded Investment	$ 2,274	$ 1,609
Post-Modification Outstanding Recorded Investment	1,911	1,362
Charge-offs	363	247
Specific Reserves	$ 414	$ 102
Commercial and Industrial | Accruing
Financing Receivable Modifications [Line Items]
Number of Loans | Loan	1	1
Pre-Modification Outstanding Recorded Investment	$ 74	$ 78
Post-Modification Outstanding Recorded Investment	74	78
Specific Reserves	$ 74	$ 78
Commercial and Industrial | Non-accruing
Financing Receivable Modifications [Line Items]
Number of Loans | Loan	10	14
Pre-Modification Outstanding Recorded Investment	$ 3,837	$ 4,420
Post-Modification Outstanding Recorded Investment	3,674	4,288
Charge-offs	163	132
Specific Reserves	$ 1,750	$ 3,157
Residential Real Estate | Accruing
Financing Receivable Modifications [Line Items]
Number of Loans | Loan	3	3
Pre-Modification Outstanding Recorded Investment	$ 220	$ 230
Post-Modification Outstanding Recorded Investment	$ 220	$ 230

Allowance for Loan and Lease_10

Allowance for Loan and Lease Losses and Reserve for Unfunded Commitments - Summary of Loans Modified as Troubled Debt Restructurings (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Receivables [Abstract]
Beginning balance	$ 2,495	$ 1,771
Additions	281
Net payments	(57)	(46)
Ending balance	2,719	1,725
Beginning balance	5,650	8,800
Additions	673	4,258
Net payments	(343)	(941)
Charge-offs	(395)
Ending balance	5,585	12,117
Total troubled debt restructurings	$ 8,304	$ 13,842

Servicing Assets - Activity for

Servicing Assets - Activity for Servicing Assets and Related Changes in Fair Value (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Transfers And Servicing [Abstract]
Beginning balance	$ 22,042	$ 19,471
Additions, net	1,603	1,393
Changes in fair value	(1,505)	(3,064)
Ending balance	$ 22,140	$ 17,800

Servicing Assets - Unpaid Princ

Servicing Assets - Unpaid Principal Balances of Loans Serviced for Others (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Loan portfolios serviced for:
Unpaid principal balances of loans serviced	$ 1,568,990	$ 1,531,256
SBA guaranteed loans
Loan portfolios serviced for:
Unpaid principal balances of loans serviced	1,422,478	1,395,713
USDA guaranteed loans
Loan portfolios serviced for:
Unpaid principal balances of loans serviced	$ 146,512	$ 135,543

Servicing Assets - Additional I

Servicing Assets - Additional Information (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Accounts Notes And Loans Receivable [Line Items]
Changes in fair value of servicing assets	$ (1,505)	$ (3,064)
Loan Servicing Revenue [Member]
Accounts Notes And Loans Receivable [Line Items]
Fair value of servicing assets	$ 2,800	$ 2,800

Other Real Estate Owned - Chang

Other Real Estate Owned - Change in Other Real Estate Owned (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Real Estate [Abstract]
Other real estate owned, beginning balance	$ 6,350	$ 9,896
Net additions to OREO	436	22
Proceeds from sales of OREO	(370)	(264)
Gains on sales of OREO	28	82
Valuation adjustments	(492)	(463)
Other real estate owned, ending balance	$ 5,952	$ 9,273

Other Real Estate Owned - Addit

Other Real Estate Owned - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2019
Real Estate [Line Items]
Foreclosed real estate properties recorded as result of obtaining physical possession of property	$ 5,952,000	$ 9,273,000	$ 6,350,000	$ 9,896,000
Residential consumer mortgage loans in process of foreclosure	2,900,000		3,300,000
Proceeds from sale of internally financed sales of OREO	0	$ 0
Residential Real Estate
Real Estate [Line Items]
Foreclosed real estate properties recorded as result of obtaining physical possession of property	$ 0		$ 0

Leases - Additional Information

Leases - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Leases [Abstract]
Lessor, Operating Lease Maturity Year	2042
Weighted-average discount rate of operating leases	0.76%
Weighted average remaining life of operating leases	6 years 1 month 6 days
Rental expenses	$ 1,400,000	$ 1,700,000
Sublease Income	154,000	$ 182,000
Minimum rental to be received in future on subleases	$ 812,000
Sublease contract maturity year	2025

Leases - Schedule of Operating

Leases - Schedule of Operating Lease Right-of-use Asset and Liability (Details) $ in Thousands	Mar. 31, 2021USD ($)
Lessee Lease Description [Line Items]
Operating lease liabilities	$ 12,273
Accrued Interest Receivable and Other Assets
Lessee Lease Description [Line Items]
Operating right-of-use assets	9,672
Accrued Interest Payable and Other Liabilities
Lessee Lease Description [Line Items]
Operating lease liabilities	$ 12,273

Leases - Schedule of Future Min

Leases - Schedule of Future Minimum Lease Payments for Operating Leases (Details) $ in Thousands	Mar. 31, 2021USD ($)
Leases [Abstract]
2021	$ 2,958
2022	3,024
2023	1,731
2024	1,490
2025	777
Thereafter	2,865
Total undiscounted lease payments	12,845
Less: imputed interest	(572)
Operating lease liabilities	$ 12,273

Goodwill, Core Deposit Intang_3

Goodwill, Core Deposit Intangible and Other Intangible Assets - Summary of Changes in Goodwill, Core Deposit Intangible Assets and Customer Relationship Intangible Assets (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Schedule Of Goodwill And Intangible Assets [Line Items]
Beginning balance, Goodwill	$ 148,353	$ 148,353
Ending balance, Goodwill	148,353	148,353
Amortization	(1,749)	(1,893)
Core Deposits
Schedule Of Goodwill And Intangible Assets [Line Items]
Beginning balance	21,809	29,111
Amortization	(1,683)	(1,826)
Ending balance	20,126	27,285
Accumulated amortization	$ 33,340	$ 28,181
Weighted average remaining amortization period	5 years 4 months 24 days	6 years 3 months 18 days
Customer Relationships
Schedule Of Goodwill And Intangible Assets [Line Items]
Beginning balance	$ 2,469	$ 2,791
Amortization	(66)	(67)
Ending balance	2,403	2,724
Accumulated amortization	$ 813	$ 492
Weighted average remaining amortization period	9 years	10 years 2 months 12 days

Goodwill, Core Deposit Intang_4

Goodwill, Core Deposit Intangible and Other Intangible Assets - Estimated Amortization Expense for Core Deposit Intangible and Customer Relationship Intangible Recognized (Details) $ in Thousands	Mar. 31, 2021USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
2021	$ 5,249
2022	6,426
2023	4,371
2024	2,286
2025	1,721
Thereafter	2,476
Total	$ 22,529

Income Taxes - Additional Infor

Income Taxes - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Effective tax rate	25.30%	26.10%
Net income tax provision related to exercise of stock options	$ 28,000	$ 28,000
Net income tax benefit related to vesting of restricted shares	(69,000)	$ (69,000)
Deferred tax assets, net	$ 48,700,000		$ 40,200,000

Deposits - Composition of Depos

Deposits - Composition of Deposits (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Deposits [Abstract]
Non-interest-bearing demand deposits	$ 2,015,643	$ 1,762,676
Interest-bearing checking accounts	567,660	494,424
Money market demand accounts	1,075,330	1,142,709
Other savings	600,725	564,700
Time deposits (below $250,000)	579,682	600,810
Time deposits ($250,000 and above)	185,500	186,712
Total deposits	$ 5,024,540	$ 4,752,031

Deposits - Additional Informati

Deposits - Additional Information (Details) - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Deposits [Abstract]
Brokered deposits	$ 35,400,000	$ 35,000,000

Other Borrowings - Summary of O

Other Borrowings - Summary of Other Borrowings (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Debt Disclosure [Abstract]
Paycheck Protection Program Liquidity Facility	$ 387,647	$ 371,907
Federal Home Loan Bank advances	329,000	234,000
Securities sold under agreements to repurchase	33,072	41,994
Total	$ 749,719	$ 647,901

Other Borrowings - Additional I

Other Borrowings - Additional Information (Details) - USD ($)	Oct. 09, 2020	Apr. 21, 2020	Oct. 10, 2019	Mar. 31, 2021	Dec. 31, 2020	Oct. 13, 2016
Line Of Credit Facility [Line Items]
Paycheck protection program liquidity facility				$ 387,647,000	$ 371,907,000
Federal Reserve Bank discount window borrowing				0	0
Federal Home Loan Bank advances				$ 329,000,000	234,000,000
Federal home loan bank advances maximum borrowing capacity as percentage of total assets				35.00%
Federal home loan bank, required investment conversion ratio				4.50
Minimum
Line Of Credit Facility [Line Items]
Federal home loan bank advances, Fixed interest rate				0.00%
Federal home loan bank fixed rate advances, maturity date				2021-04
Maximum
Line Of Credit Facility [Line Items]
Federal home loan bank advances, Fixed interest rate				22.00%
Federal home loan bank fixed rate advances, maturity date				2021-05
Federal Reserve Bank of Chicago Discount Window Line
Line Of Credit Facility [Line Items]
Paycheck protection program liquidity facility				$ 387,600,000
Debt instrument, interest rate				0.35%
Federal Reserve Bank of Chicago Discount Window Line | Minimum
Line Of Credit Facility [Line Items]
Line of credit facility, maturity month and year				2022-04
Federal Reserve Bank of Chicago Discount Window Line | Maximum
Line Of Credit Facility [Line Items]
Line of credit facility, maturity month and year				2026-01
Federal Reserve Bank of Chicago Discount Window Line | Letter Agreement
Line Of Credit Facility [Line Items]
Interest rate spread		0.35%
Correspondent Bank | Credit agreement | Ridgestone
Line Of Credit Facility [Line Items]
Line of credit facility, amount						$ 30,000,000
Correspondent Bank | Fourth Amendment Revolving Credit Agreement | Ridgestone
Line Of Credit Facility [Line Items]
Line of credit facility, amount			$ 15,000,000	$ 0	$ 0
Line of credit facility, extended maturity date	Oct. 8, 2021		Oct. 9, 2020
Line of credit facility, interest rate terms				The amended revolving line of credit bears interest at either the London Interbank Offered Rate (“LIBOR”) plus 195 basis points or the Prime Rate minus 75 basis points, based on the Company’s election, which is required to be communicated at least three business days prior to the commencement of an interest period. If the Company fails to provide timely notification, the interest rate will be Prime Rate minus 75 basis points. At March 31, 2021 and December 31, 2020, the line of credit had no outstanding balance.
Correspondent Bank | Amended Credit Agreement | Ridgestone | LIBOR Rate
Line Of Credit Facility [Line Items]
Interest rate spread			1.95%
Correspondent Bank | Amended Credit Agreement | Ridgestone | Prime Rate
Line Of Credit Facility [Line Items]
Interest rate spread			0.75%

Other Borrowings - Summary of S

Other Borrowings - Summary of Short-term Credit Lines Available for Use (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Federal Home Loan Bank Line
Debt Instrument [Line Items]
Short-term credit lines available for use	$ 1,883,967	$ 2,016,212
Federal Reserve Bank of Chicago Discount Window Line
Debt Instrument [Line Items]
Short-term credit lines available for use	885,510	874,677
Available Federal Funds Line
Debt Instrument [Line Items]
Short-term credit lines available for use	$ 115,000	$ 115,000

Subordinated Notes and Junior_3

Subordinated Notes and Junior Subordinated Debentures - Additional Information (Details) - USD ($)	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Debt Instrument [Line Items]
Principal amount	$ 45,000,000	$ 45,000,000
Fixed-To-Floating Subordinate Notes Mature on July 1, 2030 | Subordinated Notes
Debt Instrument [Line Items]
Debt instrument, face amount		$ 75,000,000
Debt instrument, interest rate		6.00%
Debt instrument, maturity date		Jul. 1, 2030
Debt instrument, redemption, description	As of March 31, 2021, the net liability outstanding of the subordinated notes was $73.4 million The Company may, at its option, redeem the notes, in whole or in part, on a semi-annual basis beginning on July 1, 2025, subject to obtaining the prior approval of the Federal Reserve to the extent such approval is then required.
Debt issuance costs		$ 1,700,000
Debt issuance costs, amortization period		10 years
Net liability outstanding of subordinated notes	$ 73,400,000
Fixed-To-Floating Subordinate Notes Mature on July 1, 2030 | Subordinated Notes | Three-Month Secured Overnight Financing Rate Plus 588 Basis Points
Debt Instrument [Line Items]
Debt instrument, description of variable rate basis	The subordinated notes bear a fixed interest rate of 6.00% until July 1, 2025 and a floating interest rate equal to a benchmark rate, which is expected to be three-month Secured Overnight Financing Rate plus 588 basis points thereafter until maturity.
Metropolitan Statutory Trust 1
Debt Instrument [Line Items]
Principal amount	$ 35,000,000	$ 35,000,000
Metropolitan Statutory Trust 1 | Junior Subordinated Debentures
Debt Instrument [Line Items]
Debt instrument, maturity date	Mar. 17, 2034
Contractual rate	2.97%	3.02%
Accrued interest payable	$ 45,000	$ 45,000
Metropolitan Statutory Trust 1 | Junior Subordinated Debentures | Three-month LIBOR
Debt Instrument [Line Items]
Debt instrument, description of variable rate basis	Three-month LIBOR + 2.79%
Interest rate spread	2.79%	2.79%
First Evanston Bancorp Trust I
Debt Instrument [Line Items]
Principal amount	$ 10,000,000	$ 10,000,000
First Evanston Bancorp Trust I | Junior Subordinated Debentures
Debt Instrument [Line Items]
Debt instrument, maturity date	Mar. 15, 2035
Contractual rate	1.96%	2.00%
Accrued interest payable	$ 9,000	$ 9,000
First Evanston Bancorp Trust I | Junior Subordinated Debentures | Three-month LIBOR
Debt Instrument [Line Items]
Debt instrument, description of variable rate basis	Three-month LIBOR + 1.78%
Interest rate spread	1.78%	1.78%

Subordinated Notes and Junior_4

Subordinated Notes and Junior Subordinated Debentures - Junior Subordinated Debentures by Issuance (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Shares Subject To Mandatory Redemption By Settlement Terms [Line Items]
Total liability, at par	$ 45,000	$ 45,000
Total liability, at carrying value	36,565	36,451
Metropolitan Statutory Trust 1
Shares Subject To Mandatory Redemption By Settlement Terms [Line Items]
Total liability, at par	35,000	35,000
First Evanston Bancorp Trust I
Shares Subject To Mandatory Redemption By Settlement Terms [Line Items]
Total liability, at par	10,000	10,000
Junior Subordinated Debentures
Shares Subject To Mandatory Redemption By Settlement Terms [Line Items]
Discount	$ (8,435)	$ (8,549)
Junior Subordinated Debentures | Metropolitan Statutory Trust 1
Shares Subject To Mandatory Redemption By Settlement Terms [Line Items]
Stated Maturity	Mar. 17, 2034
Contractual Rate	2.97%	3.02%
Junior Subordinated Debentures | Metropolitan Statutory Trust 1 | Three-month LIBOR
Shares Subject To Mandatory Redemption By Settlement Terms [Line Items]
Interest Rate Spread, Description	Three-month LIBOR + 2.79%
Interest Rate Spread	2.79%	2.79%
Junior Subordinated Debentures | First Evanston Bancorp Trust I
Shares Subject To Mandatory Redemption By Settlement Terms [Line Items]
Stated Maturity	Mar. 15, 2035
Contractual Rate	1.96%	2.00%
Junior Subordinated Debentures | First Evanston Bancorp Trust I | Three-month LIBOR
Shares Subject To Mandatory Redemption By Settlement Terms [Line Items]
Interest Rate Spread, Description	Three-month LIBOR + 1.78%
Interest Rate Spread	1.78%	1.78%

Commitments and Contingent Li_3

Commitments and Contingent Liabilities - Summary of Contract or Notional Amount of Outstanding Loan and Lease Commitments (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Commitments And Contingencies Liabilities [Line Items]
Fixed Rate	$ 125,469	$ 106,835
Variable Rate	1,439,771	1,319,992
Total	1,565,240	1,426,827
Commitments to Extend Credit
Commitments And Contingencies Liabilities [Line Items]
Fixed Rate	124,817	106,183
Variable Rate	1,380,797	1,261,872
Total	1,505,614	1,368,055
Letters of Credit
Commitments And Contingencies Liabilities [Line Items]
Fixed Rate	652	652
Variable Rate	58,974	58,120
Total	$ 59,626	$ 58,772

Commitments and Contingent Li_4

Commitments and Contingent Liabilities - Additional Information (Details)	3 Months Ended
	Mar. 31, 2021
Commitments And Contingencies Liabilities [Line Items]
Fixed rate loan commitments maturity year	2050
Variable rate loan commitments maturity year	2048
Maximum
Commitments And Contingencies Liabilities [Line Items]
Commitments to make loans period	90 days
Loan commitments fixed interest rate	18.00%
Loan commitments variable interest rate	8.25%
Minimum
Commitments And Contingencies Liabilities [Line Items]
Loan commitments fixed interest rate	1.25%
Loan commitments variable interest rate	1.25%

Fair Value Measurement - Summar

Fair Value Measurement - Summary of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available-for-sale, at fair value	$ 1,675,907	$ 1,447,230
Equity and other securities, at fair value	8,557	8,764
Servicing assets, at fair value	22,140	22,042	$ 17,800	$ 19,471
Derivative assets	16,949	17,149
Derivative liabilities	12,380	18,133
U.S. Treasury Notes
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available-for-sale, at fair value	13,718	23,812
U.S. Government Agencies
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available-for-sale, at fair value	139,585	113,551
Obligations of States, Municipalities, and Political Subdivisions
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available-for-sale, at fair value	106,528	142,419
Corporate Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available-for-sale, at fair value	62,552	60,768
Asset-Backed Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available-for-sale, at fair value	45,271	45,156
Fair Value, Measurements, Recurring
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Servicing assets, at fair value	22,140	22,042
Derivative assets	16,949	17,149
Derivative liabilities	12,380	18,133
Fair Value, Measurements, Recurring | U.S. Treasury Notes
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available-for-sale, at fair value	13,718	23,812
Fair Value, Measurements, Recurring | U.S. Government Agencies
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available-for-sale, at fair value	139,585	113,551
Fair Value, Measurements, Recurring | Obligations of States, Municipalities, and Political Subdivisions
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available-for-sale, at fair value	106,528	142,419
Fair Value, Measurements, Recurring | Mortgage-Backed Securities; Residential | Agency
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available-for-sale, at fair value	971,092	778,391
Fair Value, Measurements, Recurring | Mortgage-Backed Securities; Residential | Non-Agency
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available-for-sale, at fair value	67,950	32,981
Fair Value, Measurements, Recurring | Mortgage-Backed Securities; Commercial | Agency
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available-for-sale, at fair value	269,211	250,152
Fair Value, Measurements, Recurring | Corporate Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available-for-sale, at fair value	62,552	60,768
Fair Value, Measurements, Recurring | Asset-Backed Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available-for-sale, at fair value	45,271	45,156
Fair Value, Measurements, Recurring | Mutual Funds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity and other securities, at fair value	2,939	2,983
Fair Value, Measurements, Recurring | Equity Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity and other securities, at fair value	5,618	5,781
Fair Value, Measurements, Recurring | Level 1 | U.S. Treasury Notes
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available-for-sale, at fair value	13,718	23,812
Fair Value, Measurements, Recurring | Level 1 | Mutual Funds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity and other securities, at fair value	2,939	2,983
Fair Value, Measurements, Recurring | Level 2
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Derivative assets	16,949	17,149
Derivative liabilities	12,380	18,133
Fair Value, Measurements, Recurring | Level 2 | U.S. Government Agencies
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available-for-sale, at fair value	139,585	113,551
Fair Value, Measurements, Recurring | Level 2 | Obligations of States, Municipalities, and Political Subdivisions
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available-for-sale, at fair value	106,528	142,419
Fair Value, Measurements, Recurring | Level 2 | Mortgage-Backed Securities; Residential | Agency
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available-for-sale, at fair value	971,092	778,391
Fair Value, Measurements, Recurring | Level 2 | Mortgage-Backed Securities; Residential | Non-Agency
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available-for-sale, at fair value	67,950	32,981
Fair Value, Measurements, Recurring | Level 2 | Mortgage-Backed Securities; Commercial | Agency
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available-for-sale, at fair value	269,211	250,152
Fair Value, Measurements, Recurring | Level 2 | Corporate Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available-for-sale, at fair value	62,552	60,768
Fair Value, Measurements, Recurring | Level 2 | Asset-Backed Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Securities available-for-sale, at fair value	45,271	45,156
Fair Value, Measurements, Recurring | Level 2 | Equity Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity and other securities, at fair value	4,932	5,096
Fair Value, Measurements, Recurring | Level 3
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Servicing assets, at fair value	22,140	22,042
Fair Value, Measurements, Recurring | Level 3 | Equity Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Equity and other securities, at fair value	$ 686	$ 685

Fair Value Measurement - Additi

Fair Value Measurement - Additional Information (Details) - USD ($)	Mar. 31, 2021	Mar. 31, 2020
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Abstract]
Fair value, assets, to or from level 3 transfers, amount	$ 0	$ 0
Fair value, liabilities, to or from level 3 transfers, amount	0	0
Fair value, equity, to or from level 3 transfers, amount	$ 0	$ 0

Fair Value Measurement - Summ_2

Fair Value Measurement - Summary of Financial Assets Measured at Fair Value on Recurring Basis Using Significant Unobservable Inputs (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Investment Securities
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Balance, beginning of period	$ 685	$ 700
Change in fair value	1	(20)
Balance, end of period	686	680
Servicing Assets
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Balance, beginning of period	22,042	19,471
Additions, net	1,603	1,393
Change in fair value	(1,505)	(3,064)
Balance, end of period	$ 22,140	$ 17,800

Fair Value Measurement - Summ_3

Fair Value Measurement - Summary of Unobservable Inputs Used in the Fair Value Measurements on Recurring Basis (Details) - Fair Value, Measurements, Recurring - Level 3	3 Months Ended
	Mar. 31, 2021
Single Issuer Trust Preferred
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impact to Valuation from an Increased or Higher Input Value	Decrease
Debt Instrument, Valuation Technique [Extensible List]	us-gaap:ValuationTechniqueDiscountedCashFlowMember
Debt Instrument, Measurement Input [Extensible List]	Discount Rate
Single Issuer Trust Preferred | Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Unobservable Inputs	0.032
Single Issuer Trust Preferred | Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Unobservable Inputs	0.064
Single Issuer Trust Preferred | Weighted Average
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Unobservable Inputs	0.046
Servicing Assets
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Servicing Asset, Valuation Technique [Extensible List]	us-gaap:ValuationTechniqueDiscountedCashFlowMember
Servicing Assets | Prepayment Speeds
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impact to Valuation from an Increased or Higher Input Value	Decrease
Servicing Assets | Prepayment Speeds | Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Unobservable Inputs	0.001
Servicing Assets | Prepayment Speeds | Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Unobservable Inputs	0.316
Servicing Assets | Prepayment Speeds | Weighted Average
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Unobservable Inputs	0.151
Servicing Assets | Discount Rate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impact to Valuation from an Increased or Higher Input Value	Decrease
Servicing Assets | Discount Rate | Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Unobservable Inputs	0.007
Servicing Assets | Discount Rate | Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Unobservable Inputs	0.499
Servicing Assets | Discount Rate | Weighted Average
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Unobservable Inputs	0.099
Servicing Assets | Expected Weighted Average Loan life
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Impact to Valuation from an Increased or Higher Input Value	Increase
Servicing Assets | Expected Weighted Average Loan life | Minimum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Expected weighted average loan life	3 months 18 days
Servicing Assets | Expected Weighted Average Loan life | Maximum
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Expected weighted average loan life	8 years 7 months 6 days
Servicing Assets | Expected Weighted Average Loan life | Weighted Average
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]
Expected weighted average loan life	3 years 8 months 12 days

Fair Value Measurement - Summ_4

Fair Value Measurement - Summary of Assets Measured at Fair Value on Non-Recurring Basis, Excluding Acquired Impaired Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Commercial Real Estate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	$ 47,012	$ 41,135
Residential Real Estate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	1,608	1,752
Commercial and Industrial
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	24,482	28,508
Other Real Estate Owned
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	5,952	6,350
Assets Held For Sale
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	11,845	13,023
Level 3 | Commercial Real Estate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	47,012	41,135
Level 3 | Residential Real Estate
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	1,608	1,752
Level 3 | Commercial and Industrial
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	24,482	28,508
Level 3 | Other Real Estate Owned
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	5,952	6,350
Level 3 | Assets Held For Sale
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis Valuation Techniques [Line Items]
Assets, Fair Value	$ 11,845	$ 13,023

Fair Value Measurement - Summ_5

Fair Value Measurement - Summary of Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financial assets
Cash and due from banks	$ 47,101	$ 41,432
Interest bearing deposits with other banks	66,038	41,988
Securities held-to-maturity, fair value	4,066	4,573
Restricted stock, at cost	19,057	10,507
Loans held for sale	28,584	7,924
Loans and lease receivables, net (less impaired loans at fair value	4,389,030	4,274,188
Financial liabilities
Paycheck Protection Program Liquidity Facility	387,647	371,907
Federal Home Loan Bank advances	329,000	234,000
Securities sold under agreements to repurchase	33,072	41,994
Subordinated notes, net	73,386	73,342
Junior subordinated debentures issued to capital trusts, net	36,565	36,451
Level 1 | Carrying Amount
Financial assets
Cash and due from banks	47,101	41,432
Level 1 | Estimate of Fair Value Measurement
Financial assets
Cash and due from banks	47,101	41,432
Level 2 | Carrying Amount
Financial assets
Interest bearing deposits with other banks	66,038	41,988
Securities held-to-maturity, fair value	3,892	4,395
Restricted stock, at cost	19,057	10,507
Financial liabilities
Non-interest-bearing deposits	2,015,643	1,762,676
Interest-bearing deposits	3,008,897	2,989,355
Accrued interest payable	2,267	1,478
Paycheck Protection Program Liquidity Facility	387,647	371,907
Federal Home Loan Bank advances	329,000	234,000
Securities sold under agreements to repurchase	33,072	41,994
Subordinated notes, net	73,386	73,342
Level 2 | Estimate of Fair Value Measurement
Financial assets
Interest bearing deposits with other banks	66,038	41,988
Securities held-to-maturity, fair value	4,066	4,573
Restricted stock, at cost	19,057	10,507
Financial liabilities
Non-interest-bearing deposits	2,015,643	1,762,676
Interest-bearing deposits	3,009,901	2,990,735
Accrued interest payable	2,267	1,478
Paycheck Protection Program Liquidity Facility	387,647	371,907
Federal Home Loan Bank advances	329,000	234,000
Securities sold under agreements to repurchase	33,072	41,994
Subordinated notes, net	75,832	76,627
Level 3 | Carrying Amount
Financial assets
Loans held for sale	28,584	7,924
Loans and lease receivables, net (less impaired loans at fair value	4,315,928	4,202,793
Accrued interest receivable	21,765	20,678
Financial liabilities
Junior subordinated debentures issued to capital trusts, net	36,565	36,451
Level 3 | Estimate of Fair Value Measurement
Financial assets
Loans held for sale	32,408	8,848
Loans and lease receivables, net (less impaired loans at fair value	4,315,239	4,205,906
Accrued interest receivable	21,765	20,678
Financial liabilities
Junior subordinated debentures issued to capital trusts, net	$ 40,807	$ 40,543

Derivative Instruments and He_3

Derivative Instruments and Hedge Activities - Summary of Derivative Financial Instruments and Classification on Consolidated Statements of Financial Condition (Details) - USD ($)	Mar. 31, 2021	Dec. 31, 2020
Derivatives Fair Value [Line Items]
Notional Amount	$ 739,390,000	$ 391,847,000
Other Assets	16,949,000	17,149,000
Other Liabilities	(12,380,000)	(18,133,000)
Cash Flow Hedging
Derivatives Fair Value [Line Items]
Notional Amount	350,000,000
Other Assets	4,992,000
Other Interest Rate Derivatives
Derivatives Fair Value [Line Items]
Notional Amount	381,169,000
Other Assets	11,957,000
Other Liabilities	(12,368,000)
Derivatives Designated as Hedging Instruments | Interest Rate Swaps | Cash Flow Hedging
Derivatives Fair Value [Line Items]
Notional Amount	350,000,000	0
Other Assets	4,992,000
Derivatives Not Designated As Hedging Instruments | Other Credit Derivatives
Derivatives Fair Value [Line Items]
Notional Amount	8,221,000	8,437,000
Other Liabilities	(12,000)	(17,000)
Derivatives Not Designated As Hedging Instruments | Other Interest Rate Derivatives
Derivatives Fair Value [Line Items]
Notional Amount	381,169,000	383,410,000
Other Assets	11,957,000	17,149,000
Other Liabilities	$ (12,368,000)	$ (18,116,000)

Derivative Instruments and He_4

Derivative Instruments and Hedge Activities - Additional Information (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Derivative [Line Items]
Derivative notional amount	$ 739,390,000		$ 391,847,000
Interest recorded	502,000	$ 1,897,000
Unrealized gain (loss) to be reclassified as an decrease to interest expense during the next twelve months	(347,000)
Fair value of derivatives net liability position	12,400,000
Collateral amount posted	8,600,000
Offsetting derivative positions	3,979,000
Settlement obligation termination value	8,400,000
Interest Rate Swap
Derivative [Line Items]
Interest recorded	21,000	21,000
Other Interest Rate Derivatives
Derivative [Line Items]
Derivative notional amount	$ 381,169,000
Derivative maturity date, start year	2022-01
Derivative maturity date, end year	2030-03
Derivative instruments transaction fees	$ 42,000	$ 506,000
Other Credit Derivatives
Derivative [Line Items]
Derivative notional amount	8,200,000		8,400,000
Cash Flow Hedging
Derivative [Line Items]
Derivative notional amount	350,000,000
Designated as Hedging Instrument | Cash Flow Hedging | Interest Rate Swap
Derivative [Line Items]
Derivative notional amount	350,000,000		0
Remaining balance in other comprehensive income	289,000		$ 304,000
Designated as Hedging Instrument | Cash Flow Hedging | Fixed Interest Rate Swaps Effective in March 2022
Derivative [Line Items]
Derivative notional amount	100,000,000
Designated as Hedging Instrument | Cash Flow Hedging | Fixed Interest Rate Swaps Effective in September 2022
Derivative [Line Items]
Derivative notional amount	50,000,000
Designated as Hedging Instrument | Cash Flow Hedging | Fixed Interest Rate Swaps Effective in March 2023
Derivative [Line Items]
Derivative notional amount	$ 200,000,000

Derivative Instruments and He_5

Derivative Instruments and Hedge Activities - Summary of Cash Flow Hedges (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Notional Amount	$ 739,390,000	$ 391,847,000
Derivative assets fair value	16,949,000	17,149,000
Derivative liabilities fair value	12,380,000	$ 18,133,000
Cash Flow Hedges
Derivative [Line Items]
Notional Amount	350,000,000
Derivative assets fair value	$ 4,992,000
Weighted average pay rates	0.93%
Weighted average maturity	5 years 7 months 6 days

Derivative Instruments and He_6

Derivative Instruments and Hedge Activities - Summary of Net Gains (Losses) Recorded in Accumulated Other Comprehensive Income (Loss) and Consolidated Statements of Operations Relating to Cash Flow Derivative Instruments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Derivative [Line Items]
Amount of Loss Recognized in OCI	$ 4,992
Interest Rate Swap
Derivative [Line Items]
Amount of Loss Reclassified from OCI to Income as an Increase to Interest Expense	$ (21)	$ (21)

Derivative Instruments and He_7

Derivative Instruments and Hedge Activities - Summary of Other Interest Rate Derivatives (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Derivative [Line Items]
Notional Amount	$ 739,390,000	$ 391,847,000
Derivative assets fair value	16,949,000	17,149,000
Derivative liabilities fair value	(12,380,000)	$ (18,133,000)
Other Interest Rate Derivatives
Derivative [Line Items]
Notional Amount	381,169,000
Derivative assets fair value	11,957,000
Derivative liabilities fair value	$ (12,368,000)
Weighted average pay rates	4.43%
Weighted average receive rates	2.29%
Weighted average maturity	5 years 8 months 12 days

Derivative Instruments and He_8

Derivative Instruments and Hedge Activities - Summary of Amounts Included in Non-Interest Income in Consolidated Statements of Operations Relating to Derivative Instruments not Designated in Hedging Relationship (Details) - Non-Interest Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Derivative [Line Items]
Amounts relating to derivative instruments, not designated in hedging relationship	$ 561	$ (735)
Other Credit Derivatives
Derivative [Line Items]
Amounts relating to derivative instruments, not designated in hedging relationship	5	(12)
Other Interest Rate Derivatives
Derivative [Line Items]
Amounts relating to derivative instruments, not designated in hedging relationship	$ 556	$ (723)

Derivative Instruments and He_9

Derivative Instruments and Hedge Activities - Summary of Company's Interest Rate Derivative and Offsetting Positions (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Derivative Instruments And Hedging Activities Disclosure [Abstract]
Gross amounts recognized	$ 16,949	$ 17,149
Net amount presented in the Consolidated Statements of Financial Condition	16,949	17,149
Gross amounts not offset in the Consolidated Statements of Financial Condition
Offsetting derivative positions	(3,979)
Collateral posted	(12,029)	(17,149)
Net credit exposure	941
Derivative liabilities fair value	(12,380)	(18,133)
Net amount presented in the Consolidated Statements of Financial Condition	(12,380)	(18,133)
Gross amounts not offset in the Consolidated Statements of Financial Condition
Offsetting derivative positions	3,979
Collateral posted	$ 8,401	$ 18,133

Share-Based Compensation - Addi

Share-Based Compensation - Additional Information (Details) - USD ($)

1 Months Ended

3 Months Ended

12 Months Ended

Feb. 28, 2021

Oct. 31, 2014

Mar. 31, 2021

Dec. 31, 2020

Sep. 30, 2020

Jun. 30, 2020

Mar. 31, 2020

Dec. 31, 2020

Dec. 31, 2017

Dec. 31, 2016

Dec. 31, 2015

Jun. 30, 2017

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Common stock, voting par value

$ 0.01

$ 0.01

$ 0.01

Unrecognized stock option compensation expenses

$ 0

Common Stock

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Number of options exercised

55,908

49,138

165,375

5,196

55,402

Restricted Shares

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Unrecognized stock option compensation expenses

$ 9,720,000

$ 7,064,000

Omnibus Plan

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Number of common stock reserved for issuance

1,550,000

Number of common shares available for future grants

709,163

Omnibus Plan | Restricted Shares

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Shares of restricted voting common stock granted

293,587

Restricted shares vested

37,989

113,264

Fair value of restricted shares, vested

$ 756,000

$ 1.4

Fair value of unvested restricted stock awards

$ 13,400,000

Omnibus Plan | Restricted Shares | Common Stock

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Shares of restricted voting common stock granted

293,587

Common stock, voting par value

$ 0.01

Omnibus Plan | Restricted Shares | Common Stock | Each Anniversary of Grant Date Over Four Years

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Shares vest on grant date

104,609

Award vesting period

4 years

Omnibus Plan | Restricted Shares | Common Stock | Last Business Day of Grant Vest Over Three Years

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Shares vest on grant date

109,475

Omnibus Plan | Restricted Shares | Common Stock | Each Anniversary of Grant Date Vest Over Three Years

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Shares vest on grant date

38,279

Award vesting period

3 years

Omnibus Plan | Restricted Shares | Common Stock | Third Anniversary of Grant Date

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Shares vest on grant date

9,141

Omnibus Plan | Performance-based Restricted Shares

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Shares of restricted voting common stock granted

32,083

Period for number of shares earned under return on average assets

3 years

BYB Plan

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Number of common shares available for future grants

0

Number of options granted

0

212,400

1,634,568

Number of shares outstanding

1,370,579

1,390,579

1,390,579

Number of options exercised

20,000

19,496

Proceeds from the exercise of stock options

$ 325,000

$ 253,000

Tax benefit from exercise of stock options

$ 7,000

$ 39,000

Options vested

0

BYB Plan | Maximum

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Number of common shares available for future grants

2,476,122

BYB Plan | Time Options Grants

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Award contractual term

10 years

BYB Plan | Time Options Grants | Maximum

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Award vesting period

5 years

BYB Plan | Time Options Grants | Minimum

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Award vesting period

1 year

BYB Plan | Performance Options Grants

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Award contractual term

10 years

BYB Plan | Performance Options Grants | Maximum

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Award vesting period

5 years

BYB Plan | Performance Options Grants | Minimum

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Award vesting period

1 year

FEB Plan

Share Based Compensation Arrangement By Share Based Payment Award [Line Items]

Number of shares outstanding

197,722

233,630

233,630

Number of options exercised

35,908

255,615

Proceeds from the exercise of stock options

$ 425,000

$ 2,800,000

Tax benefit from exercise of stock options

$ 45,000

$ 219,000

Options vested

0

Conversion calculation percentage

472.50%

Share-Based Compensation - Summ

Share-Based Compensation - Summary of Changes in Restricted Shares (Details) - Omnibus Plan - Restricted Shares - $ / shares	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares, beginning balance	383,539
Number of shares, granted	293,587
Number of shares, vested	(37,989)	(113,264)
Number of shares, forfeited	(5,707)
Number of shares, ending balance	633,430	383,539
Weighted average grant date fair value, beginning balance	$ 18.75
Weighted average grant date fair value, granted	19.17
Weighted average grant date fair value, vested	17.52
Weighted average grant date fair value, forfeited	22.36
Weighted average grant date fair value, ending balance	$ 18.99	$ 18.75

Share-Based Compensation - Su_2

Share-Based Compensation - Summary of Stock Compensation Expense (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total share-based compensation (benefit) - stock options		$ 7,000
Income tax benefit (expense)		$ 2,000
Unrecognized compensation expense	$ 0
Weighted-average amortization period remaining	0 years	0 years
Restricted Shares
Employee Service Share Based Compensation Allocation Of Recognized Period Costs [Line Items]
Total share-based compensation - restricted stock	$ 783,000	$ 600,000
Income tax benefit	218,000	167,000
Unrecognized compensation expense	$ 9,720,000	$ 7,064,000
Weighted-average amortization period remaining	2 years 8 months 12 days	2 years 10 months 24 days

Share-Based Compensation - Su_3

Share-Based Compensation - Summary Activity in shares Subjected to Options and Weighted Average Exercise Prices (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
BYB Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Shares, Beginning balance	1,390,579
Number of Shares, Exercised	(20,000)	(19,496)
Number of Shares, Ending balance	1,370,579	1,390,579
Number of Shares, Exercisable	1,370,579
Weighted Average Exercise Price, Beginning balance	$ 11.36
Weighted Average Exercise Price, Exercised	16.25
Weighted Average Exercise Price, Ending balance	11.29	$ 11.36
Weighted Average Exercise Price, Exercisable	$ 11.29
Intrinsic Value, Beginning balance	$ 5,724
Intrinsic Value, Exercised	25
Intrinsic Value, Ending balance	13,513	$ 5,724
Intrinsic Value, Exercisable	$ 13,513
Weighted Average Remaining Contractual Term (in Years)	4 years 2 months 12 days	4 years 4 months 24 days
Weighted Average Remaining Contractual Term (in Years), Exercisable	4 years 2 months 12 days
FEB Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of Shares, Beginning balance	233,630
Number of Shares, Exercised	(35,908)	(255,615)
Number of Shares, Ending balance	197,722	233,630
Number of Shares, Exercisable	197,722
Weighted Average Exercise Price, Beginning balance	$ 11.52
Weighted Average Exercise Price, Exercised	11.84
Weighted Average Exercise Price, Ending balance	11.46	$ 11.52
Weighted Average Exercise Price, Exercisable	$ 11.46
Intrinsic Value, Beginning balance	$ 918
Intrinsic Value, Exercised	161
Intrinsic Value, Ending balance	1,915	$ 918
Intrinsic Value, Exercisable	$ 1,915
Weighted Average Remaining Contractual Term (in Years)	3 years 7 months 6 days	3 years 3 months 19 days
Weighted Average Remaining Contractual Term (in Years), Exercisable	3 years 7 months 6 days

Earnings per Share - Additional

Earnings per Share - Additional Information (Details) - shares	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Earnings Per Share Basic [Line Items]
Shares outstanding	38,164,201	37,943,333
Common Stock
Earnings Per Share Basic [Line Items]
Shares outstanding	1,568,301	1,865,842
Restricted Stock Award
Earnings Per Share Basic [Line Items]
Shares outstanding	633,430	502,689
Stock Options
Earnings Per Share Basic [Line Items]
Shares outstanding	0

Earnings per Share - Schedule o

Earnings per Share - Schedule of Calculation of Basic and Diluted Earnings per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020
Earnings Per Share [Abstract]
Net income	$ 21,798	$ 12,291	$ 13,071	$ 9,139	$ 2,966
Dividends on preferred shares	196				196
Net income available to common stockholders	$ 21,602				$ 2,770
Weighted-average common stock outstanding:
Weighted-average common stock outstanding (basic)	38,164,201				37,943,333
Incremental shares	751,281				720,325
Weighted-average common stock outstanding (dilutive)	38,915,482				38,663,658
Basic earnings per common share	$ 0.57				$ 0.07
Diluted earnings per common share	$ 0.56				$ 0.07

Stockholders' Equity - Summary

Stockholders' Equity - Summary of Preferred and Common Stock (Details) - $ / shares	Mar. 31, 2021	Dec. 31, 2020
Class Of Stock [Line Items]
Shares authorized	50,000	50,000
Shares issued	10,438	10,438
Shares outstanding	10,438	10,438
Common stock, voting par value	$ 0.01	$ 0.01
Common stock, voting shares authorized	150,000,000	150,000,000
Common stock, voting shares issued	39,106,222	38,736,540
Shares outstanding	38,641,851	38,618,054
Treasury common shares	464,371	118,486
Series B 7.5% Fixed to Floating Non-Cumulative Perpetual Preferred Stock
Class Of Stock [Line Items]
Par value	$ 0.01	$ 0.01
Shares authorized	50,000	50,000
Shares issued	10,438	10,438
Shares outstanding	10,438	10,438

Stockholders' Equity - Summar_2

Stockholders' Equity - Summary of Preferred and Common Stock (Parenthetical) (Details)	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Series B 7.5% Fixed to Floating Non-Cumulative Perpetual Preferred Stock
Class Of Stock [Line Items]
Preferred stock, dividend rate, percentage	7.50%	7.50%

Stockholders' Equity - Addition

Stockholders' Equity - Additional Information (Details) - USD ($)	Apr. 27, 2021	Jan. 26, 2021	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Dec. 31, 2016	Dec. 10, 2020	Nov. 01, 2019
Class Of Stock [Line Items]
Dividends declared and paid			$ 196,000	$ 196,000
Aggregate number of shares authorized to repurchase					1,250,000		1,250,000	1,250,000
Approximate percentage of shares authorized to be repurchased					3.20%
Number of shares purchased			332,744		118,486
Value of shares purchased			$ 6,363,000	$ 1,668,000
Cash dividend declared	$ 0.06	$ 0.06		$ 0.03
Dividend payable date	May 25, 2021	Feb. 23, 2021
Dividends record date	May 11, 2021	Feb. 9, 2021
Cash dividend declared	$ 0.06	$ 0.06		$ 0.03
Series B Preferred Stock
Class Of Stock [Line Items]
Preferred stock, dividend rate, percentage						7.50%
Preferred stock, liquidation preference per share						$ 1,000
Preferred stock fixed dividend close date						Dec. 30, 2021
Preferred stock redemption price per share						$ 1,000
Dividends declared and paid			$ 196,000	$ 196,000
Series B Preferred Stock | Three-month LIBOR
Class Of Stock [Line Items]
Preferred stock, dividend rate, percentage						5.41%

Consolidated Statements of Ch_3

Consolidated Statements of Change in Accumulated Other Comprehensive Income (Loss) - Schedule of Consolidated Statements of Changes in Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	$ 805,464	$ 794,696	$ 780,935	$ 762,667	$ 750,115
Other comprehensive income (loss), net of tax	(26,394)	(1,277)	(709)	9,685	11,048
Ending balance	793,795	805,464	794,696	780,935	762,667
Unrealized Gains (Losses) on Cash Flow Hedges
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	(305)			(350)	(366)
Other comprehensive income (loss), net of tax	3,617				16
Ending balance	3,312	(305)			(350)
Unrealized Gains (Losses) on Available-for-Sale Securities
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	18,352			10,698	(334)
Other comprehensive income (loss), net of tax	(30,011)				11,032
Ending balance	(11,659)	18,352			10,698
Accumulated Other Comprehensive Income (Loss)
Accumulated Other Comprehensive Income Loss [Line Items]
Beginning balance	18,047	19,324	20,033	10,348	(700)
Other comprehensive income (loss), net of tax	(26,394)	(1,277)	(709)	9,685	11,048
Ending balance	$ (8,347)	$ 18,047	$ 19,324	$ 20,033	$ 10,348