Amerant Bancorp (AMTB) 10-Q 27 Oct 23 2023 Q3 Quarterly report Financial data

Cover Page

Cover Page - shares	9 Months Ended
	Sep. 30, 2023	Oct. 23, 2023
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2023
Document Transition Report	false
Entity File Number	001-38534
Entity Registrant Name	Amerant Bancorp Inc.
Entity Incorporation, State or Country Code	FL
Entity Tax Identification Number	65-0032379
Entity Address, Address Line One	220 Alhambra Circle
Entity Address, City or Town	Coral Gables,
Entity Address, State or Province	FL
Entity Address, Postal Zip Code	33134
City Area Code	(305)
Local Phone Number	460-4728
Title of 12(b) Security	Class A Common Stock
Trading Symbol	AMTB
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		33,576,894
Entity Central Index Key	0001734342
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2023
Document Fiscal Period Focus	Q3
Amendment Flag	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($)	Sep. 30, 2023	Dec. 31, 2022
Assets
Cash and due from banks	$ 48,145,000	$ 19,486,000
Interest earning deposits with banks	202,946,000	228,955,000
Restricted cash	51,837,000	42,160,000
Other short-term investments	6,024,000	0
Cash and cash equivalents	308,952,000	290,601,000
Securities
Debt securities available for sale, at fair value	1,033,797,000	1,057,621,000
Debt securities held to maturity, at amortized cost (estimated fair value of $195,165 and $217,609 at September 30, 2023 and December 31, 2022, respectively)	230,254,000	242,101,000
Equity securities with readily determinable fair value not held for trading	2,438,000	11,383,000
Federal Reserve Bank and Federal Home Loan Bank stock	47,878,000	55,575,000
Securities	1,314,367,000	1,366,680,000
Loans held for sale, at lower of fair value or cost	43,257,000	0
Mortgage loans held for sale, at fair value	25,952,000	62,438,000
Loans held for investment, gross	7,073,387,000	6,857,194,000
Less: Allowance for credit losses	98,773,000	83,500,000
Loans held for investment, net	6,974,614,000	6,773,694,000
Bank owned life insurance	232,736,000	228,412,000
Premises and equipment, net	43,004,000	41,772,000
Deferred tax assets, net	63,501,000	48,703,000
Operating lease right-of-use assets	116,763,000	139,987,000
Goodwill	20,525,000	19,506,000
Accrued interest receivable and other assets	202,029,000	156,011,000
Total assets	9,345,700,000	9,127,804,000
Deposits
Noninterest bearing	1,370,157,000	1,367,664,000
Interest bearing	2,416,797,000	2,300,469,000
Savings and money market	1,457,080,000	1,647,811,000
Time	2,302,878,000	1,728,255,000
Total deposits	7,546,912,000	7,044,199,000
Advances from the Federal Home Loan Bank	595,000,000	906,486,000
Senior notes	59,447,000	59,210,000
Subordinated notes	29,412,000	29,284,000
Junior subordinated debentures held by trust subsidiaries	64,178,000	64,178,000
Operating lease liabilities	120,665,000	140,147,000
Accounts payable, accrued liabilities and other liabilities	210,299,000	178,574,000
Total liabilities	8,625,913,000	8,422,078,000
Contingencies (Note 16)
Stockholders’ equity
Class A common stock, $0.10 par value, 250 million shares authorized; 33,583,621 shares issued and outstanding at September 30, 2023 (33,815,161 shares issued and outstanding at December 31, 2022)	3,359,000	3,382,000
Additional paid in capital	194,103,000	194,694,000
Retained earnings	630,933,000	590,375,000
Accumulated other comprehensive loss	(105,634,000)	(80,635,000)
Total stockholders' equity before noncontrolling interest	722,761,000	707,816,000
Noncontrolling interest	(2,974,000)	(2,090,000)
Total stockholders' equity	719,787,000	705,726,000
Total liabilities and stockholders' equity	$ 9,345,700,000	$ 9,127,804,000

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Statement of Financial Position [Abstract]
Held-to-maturity, fair value	$ 195,165	$ 217,609
Class A Common Stock
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, shares authorized (in shares)	250,000,000	250,000,000
Common stock, shares issued (in shares)	33,583,621	33,815,161
Common stock, shares outstanding (in shares)	33,583,621	33,815,161

Consolidated Statements of Oper

Consolidated Statements of Operations and Comprehensive Income (Loss) (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Interest income
Loans	$ 120,244	$ 76,779	$ 348,315	$ 194,631
Investment securities	13,868	10,906	40,400	28,669
Interest earning deposits with banks and other interest income	5,271	1,452	14,295	2,102
Total interest income	139,383	89,137	403,010	225,402
Interest expense
Interest bearing demand deposits	16,668	4,934	46,201	6,258
Savings and money market deposits	11,045	3,609	28,409	5,719
Time deposits	22,482	4,717	53,844	13,501
Advances from the Federal Home Loan Bank	8,207	3,977	22,591	9,799
Senior notes	942	941	2,825	2,825
Subordinated notes	361	362	1,084	811
Junior subordinated debentures	1,097	700	3,264	2,002
Securities sold under agreements to repurchase	4	0	5	0
Total interest expense	60,806	19,240	158,223	40,915
Net interest income	78,577	69,897	244,787	184,487
Provision for (reversal of) credit losses	8,000	7,314	48,777	(2,912)
Net interest income after provision for (reversal of) credit losses	70,577	62,583	196,010	187,399
Noninterest income
Deposits and service fees	5,053	4,629	14,952	13,826
Brokerage, advisory and fiduciary activities	4,370	4,619	12,808	13,654
Change in cash surrender value of bank owned life insurance	1,483	1,352	4,324	4,028
Loan-level derivative income	1,196	2,786	3,743	6,947
Cards and trade finance servicing fees	734	622	1,829	1,720
Gain (loss) on early extinguishment of advances from the Federal Home Loan Bank, net	7,010	0	33,623	(712)
Derivative (losses) gains, net	(77)	(95)	179	(585)
Securities (losses) gains, net	(54)	1,508	(11,022)	(325)
Other noninterest income	2,206	535	7,447	4,359
Total noninterest income	21,921	15,956	67,883	42,912
Noninterest expense
Salaries and employee benefits	31,334	30,109	100,457	90,724
Occupancy and equipment	7,293	6,559	20,828	21,044
Professional and other services fees	5,325	5,045	20,368	15,918
Telecommunication and data processing	3,556	3,861	11,647	11,113
Advertising expenses	2,724	2,066	9,642	8,291
FDIC assessments and insurance	2,590	1,746	8,066	4,668
Depreciation and amortization	1,795	1,481	5,362	3,927
Loan-level derivative expense	18	1,810	1,728	4,865
Other real estate owned and repossessed assets (income) expense, net	(134)	234	2,297	3,408
Contract termination costs	0	289	1,550	7,103
Loans held for sale valuation expense	5,562	0	5,562	159
Other operating expenses	4,357	2,913	14,146	7,952
Total noninterest expenses	64,420	56,113	201,653	179,172
Income before income tax expense	28,078	22,426	62,240	51,139
Income tax expense	(6,337)	(4,936)	(13,511)	(10,994)
Net income before attribution of noncontrolling interest	21,741	17,490	48,729	40,145
Noncontrolling interest	(378)	(44)	(884)	(1,192)
Net income attributable to Amerant Bancorp Inc.	22,119	17,534	49,613	41,337
Other comprehensive loss, net of tax
Net unrealized holding losses on debt securities available for sale arising during the period	(18,569)	(34,959)	(25,939)	(101,038)
Net unrealized holding gains (losses) on cash flow hedges arising during the period	129	(16)	217	162
Reclassification adjustment for items included in net income	(268)	(274)	723	(549)
Other comprehensive loss	(18,708)	(35,249)	(24,999)	(101,425)
Comprehensive income (loss)	$ 3,411	$ (17,715)	$ 24,614	$ (60,088)
Earnings Per Share (Note 18):
Basic earnings per common share (in dollars per share)	$ 0.66	$ 0.52	$ 1.48	$ 1.22
Diluted earnings per common share (in dollars per share)	$ 0.66	$ 0.52	$ 1.47	$ 1.21

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Cumulative effect of adoption of accounting principle, net of tax	Class A	Total Stockholders' Equity Before Noncontrolling Interest	Total Stockholders' Equity Before Noncontrolling Interest Cumulative effect of adoption of accounting principle, net of tax	Total Stockholders' Equity Before Noncontrolling Interest Class A	Common Stock Class A	Additional Paid in Capital	Treasury Stock	Treasury Stock Class A	Retained Earnings	Retained Earnings Cumulative effect of adoption of accounting principle, net of tax	Accumulated Other Comprehensive Income (loss)	Noncontrolling interest
Beginning balance (in shares) at Dec. 31, 2021							35,883,320
Beginning balance at Dec. 31, 2021	$ 831,873	$ (13,872)		$ 834,483	$ (13,872)		$ 3,589	$ 262,510	$ 0		$ 553,167	$ (13,872)	$ 15,217	$ (2,610)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchase of Class A common stock (in shares)							(1,643,480)
Repurchase of Class A common stock			$ (54,820)			$ (54,820)				$ (54,820)
Treasury stock retired	0			0			$ (165)	(54,655)	54,820
Restricted stock issued (in shares)							104,762
Restricted stock issued	0			0			$ 10	(10)
Restricted stock surrendered (in shares)							(15,174)
Restricted stock and restricted stock units surrendered	(996)			(996)			$ (2)	(994)
Restricted stock forfeited (in shares)							(1,000)
Restricted stock forfeited	0			0
Restricted stock units vested (in shares)							22,394
Restricted stock units vested	0			0			$ 2	(2)
Stock-based compensation expense	1,260			1,260				1,260
Net income attributable to Amerant Bancorp Inc.	15,379			15,379							15,379
Dividends paid	(3,154)			(3,154)							(3,154)
Net loss attributable to noncontrolling-interest shareholders	(1,076)			0										(1,076)
Other comprehensive income (loss)	(39,641)			(39,641)									(39,641)
Ending balance (in shares) at Mar. 31, 2022							34,350,822
Ending balance at Mar. 31, 2022	734,953			738,639			$ 3,434	208,109	0		551,520		(24,424)	(3,686)
Beginning balance (in shares) at Dec. 31, 2021							35,883,320
Beginning balance at Dec. 31, 2021	831,873	$ (13,872)		834,483	$ (13,872)		$ 3,589	262,510	0		553,167	$ (13,872)	15,217	(2,610)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income attributable to Amerant Bancorp Inc.	41,337
Net loss attributable to noncontrolling-interest shareholders	(1,192)
Other comprehensive income (loss)	(101,425)
Ending balance (in shares) at Sep. 30, 2022							33,773,249
Ending balance at Sep. 30, 2022	678,619			680,554			$ 3,376	191,970	0		571,416		(86,208)	(1,935)
Beginning balance (in shares) at Mar. 31, 2022							34,350,822
Beginning balance at Mar. 31, 2022	734,953			738,639			$ 3,434	208,109	0		551,520		(24,424)	(3,686)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchase of Class A common stock (in shares)							(611,525)
Repurchase of Class A common stock			$ (17,240)			(17,240)				(17,240)
Treasury stock retired	0			0			$ (61)	(17,179)	17,240
Restricted stock issued (in shares)							37,938
Restricted stock issued	0			0			$ 4	(4)
Restricted stock forfeited (in shares)							(28,586)
Restricted stock forfeited	0			0			$ (3)	3
Restricted stock units vested (in shares)							10,955
Restricted stock units vested	0			0			$ 1	(1)
Stock-based compensation expense	1,276			1,276				1,276
Net income attributable to Amerant Bancorp Inc.	8,424			8,424							8,424
Dividends paid	(3,049)			(3,049)							(3,049)
Transfer of subsidiary shares from noncontrolling interest	0			(1,867)				(1,867)						1,867
Net loss attributable to noncontrolling-interest shareholders	(72)			0										(72)
Other comprehensive income (loss)	(26,535)			(26,535)									(26,535)
Ending balance (in shares) at Jun. 30, 2022							33,759,604
Ending balance at Jun. 30, 2022	697,757			699,648			$ 3,375	190,337	0		556,895		(50,959)	(1,891)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Restricted stock issued (in shares)							22,200
Restricted stock issued	0			0			$ 2	(2)
Restricted stock surrendered (in shares)							(618)
Restricted stock and restricted stock units surrendered	(17)			(17)				(17)
Restricted stock forfeited (in shares)							(7,937)
Restricted stock forfeited	0			0			$ (1)	1
Stock-based compensation expense	1,651			1,651				1,651
Net income attributable to Amerant Bancorp Inc.	17,534			17,534							17,534
Dividends paid	(3,013)			(3,013)							(3,013)
Net loss attributable to noncontrolling-interest shareholders	(44)			0										(44)
Other comprehensive income (loss)	(35,249)			(35,249)									(35,249)
Ending balance (in shares) at Sep. 30, 2022							33,773,249
Ending balance at Sep. 30, 2022	678,619			680,554			$ 3,376	191,970	0		571,416		(86,208)	(1,935)
Beginning balance (in shares) at Dec. 31, 2022			33,815,161				33,815,161
Beginning balance at Dec. 31, 2022	705,726			707,816			$ 3,382	194,694	0		590,375		(80,635)	(2,090)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchase of Class A common stock (in shares)							(22,403)
Repurchase of Class A common stock			$ (566)			(566)				(566)
Treasury stock retired	0			0			$ (2)	(564)	566
Restricted stock issued (in shares)							10,440
Restricted stock issued	0			0			$ 1	(1)
Restricted stock, restricted stock units and performance stock units surrendered (in shares)							(44,896)
Restricted stock, restricted stock units and performance stock units surrendered	(1,170)			(1,170)			$ (4)	(1,166)
Restricted stock forfeited (in shares)							(1,394)
Restricted stock forfeited	0			0
Performance stock units vested (in shares)							10,621
Performance stock units vested	0			0			$ 1	(1)
Restricted stock units vested (in shares)							46,731
Restricted stock units vested	0			0			$ 5	(5)
Stock-based compensation expense	1,825			1,825				1,825
Net income attributable to Amerant Bancorp Inc.	20,186			20,186							20,186
Dividends paid	(3,017)			(3,017)							(3,017)
Net loss attributable to noncontrolling-interest shareholders	(244)			0										(244)
Other comprehensive income (loss)	6,316			6,316									6,316
Ending balance (in shares) at Mar. 31, 2023							33,814,260
Ending balance at Mar. 31, 2023	729,056			731,390			$ 3,383	194,782	0		607,544		(74,319)	(2,334)
Beginning balance (in shares) at Dec. 31, 2022			33,815,161				33,815,161
Beginning balance at Dec. 31, 2022	705,726			707,816			$ 3,382	194,694	0		590,375		(80,635)	(2,090)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchase of Class A common stock (in shares)							(259,853)
Stock issued for employee stock purchase plan (in shares)							30,557
Net income attributable to Amerant Bancorp Inc.	49,613
Net loss attributable to noncontrolling-interest shareholders	(884)
Other comprehensive income (loss)	(24,999)
Ending balance (in shares) at Sep. 30, 2023			33,583,621				33,583,621
Ending balance at Sep. 30, 2023	719,787			722,761			$ 3,359	194,103	0		630,933		(105,634)	(2,974)
Beginning balance (in shares) at Mar. 31, 2023							33,814,260
Beginning balance at Mar. 31, 2023	729,056			731,390			$ 3,383	194,782	0		607,544		(74,319)	(2,334)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchase of Class A common stock (in shares)							(95,262)
Repurchase of Class A common stock			$ (1,659)			(1,659)				(1,659)
Treasury stock retired	0			0			$ (10)	(1,649)	1,659
Restricted stock, restricted stock units and performance stock units surrendered (in shares)							(4,414)
Restricted stock, restricted stock units and performance stock units surrendered	(199)			(199)			$ (1)	(198)
Stock issued for employee stock purchase plan	686			686			$ 3	683
Restricted stock forfeited (in shares)							(26,432)
Restricted stock forfeited	0			0			$ (3)	3
Restricted stock units vested (in shares)							17,450
Restricted stock units vested	0			0			$ 2	(2)
Stock-based compensation expense	1,656			1,656				1,656
Net income attributable to Amerant Bancorp Inc.	7,308			7,308							7,308
Dividends paid	(3,023)			(3,023)							(3,023)
Net loss attributable to noncontrolling-interest shareholders	(262)			0										(262)
Other comprehensive income (loss)	(12,607)			(12,607)									(12,607)
Ending balance (in shares) at Jun. 30, 2023							33,736,159
Ending balance at Jun. 30, 2023	720,956			723,552			$ 3,374	195,275	0		611,829		(86,926)	(2,596)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchase of Class A common stock (in shares)							(142,188)
Repurchase of Class A common stock			$ (2,708)			$ (2,708)				$ 2,708
Treasury stock retired	0			0			$ (14)	(2,694)	2,708
Restricted stock, restricted stock units and performance stock units surrendered (in shares)							(2,124)
Restricted stock, restricted stock units and performance stock units surrendered								(17)
Restricted stock and restricted stock units surrendered	(17)			(17)
Restricted stock forfeited (in shares)							(8,865)
Restricted stock forfeited	0			0			$ (1)	1
Restricted stock units vested (in shares)							639
Restricted stock units vested	0			0
Stock-based compensation expense	1,538			1,538				1,538
Net income attributable to Amerant Bancorp Inc.	22,119			22,119							22,119
Dividends paid	(3,015)			(3,015)							(3,015)
Net loss attributable to noncontrolling-interest shareholders	(378)			0										(378)
Other comprehensive income (loss)	(18,708)			(18,708)									(18,708)
Ending balance (in shares) at Sep. 30, 2023			33,583,621				33,583,621
Ending balance at Sep. 30, 2023	$ 719,787			$ 722,761			$ 3,359	$ 194,103	$ 0		$ 630,933		$ (105,634)	$ (2,974)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Cash flows from operating activities
Net income before attribution of noncontrolling interest	$ 48,729	$ 40,145
Adjustments to reconcile net income to net cash provided by (used in) operating activities
Provision for (reversal of) credit losses	48,777	(2,912)
Net premium amortization on securities	3,656	6,977
Depreciation and amortization	5,362	3,927
Stock-based compensation expense	5,019	4,187
Change in cash surrender value of bank owned life insurance	(4,324)	(4,028)
Securities losses, net	11,022	325
Derivative (gains) losses, net	(179)	585
(Gains) losses on sale of loans, net	(3,502)	656
Loans held for sale valuation expense	5,562	159
Loss on sale of other repossessed assets	(2,649)	0
Impairment on investment carried at cost	1,963	0
Deferred taxes and others	(3,254)	4,593
(Gain) Loss on early extinguishment of advances from the FHLB, net	(33,623)	712
Proceeds from sales and repayments of loans held for sale (at fair value)	213,467	115,827
Originations and purchases of loans held for sale (at fair value)	(268,242)	(210,791)
Net changes in operating assets and liabilities:
Accrued interest receivable and other assets	(16,249)	(14,175)
Accounts payable, accrued liabilities and other liabilities	24,153	21,677
Net cash provided by (used in) operating activities	40,986	(32,136)
Purchases of investment securities:
Available for sale	(104,904)	(207,352)
Held to maturity securities	0	(129,996)
Equity securities with readily determinable fair value not held for trading	(2,500)	(12,656)
Federal Home Loan Bank stock	(51,016)	(20,824)
Purchases of investment securities	(158,420)	(370,828)
Maturities, sales, calls and paydowns of investment securities:
Available for sale	82,175	188,408
Held to maturity	11,281	13,255
Federal Home Loan Bank stock	58,713	14,527
Equity securities with readily determinable fair value not held for trading	11,168	252
Maturities, sales, calls and paydowns of investment securities	163,337	216,442
Net increase in loans	(270,969)	(927,531)
Proceeds from loan sales	41,871	76,615
Cash paid in business acquisition	(1,970)	0
Net purchases of premises and equipment and others	(8,317)	(8,032)
Proceeds from sale of repossessed assets	2,464	0
Net cash used in investing activities	(232,004)	(1,013,334)
Cash flows from financing activities
Net (decrease) increase in demand, savings and money market accounts	(71,910)	908,650
Net increase in time deposits	574,623	48,601
Proceeds from Advances from the Federal Home Loan Bank	1,280,000	730,000
Repayments of Advances from the Federal Home Loan Bank	(1,558,438)	(560,712)
Proceeds from issuance of subordinated notes, net of issuance costs	0	29,146
Repurchase of common stock - Class A	(4,933)	(72,060)
Dividend paid	(9,055)	(9,216)
Disbursements arising from stock-based compensation, net	(918)	(1,013)
Net cash provided by financing activities	209,369	1,073,396
Net increase in cash and cash equivalents and restricted cash	18,351	27,926
Cash, cash equivalents and restricted cash
Beginning of period	290,601	274,208
End of period	308,952	302,134
Cash paid:
Interest	150,526	37,248
Income taxes	20,038	21,766
Right-of-use assets obtained in exchange for new lease obligations	8,573	5,617
Noncash investing activities:
Mortgage loans held for sale (at fair value) transferred to loans held for investment	95,674	51,640
Loans transferred to other assets	26,534	0
Loans held for investment (at lower of fair value or cost) transferred to loans held for sale	48,819	0
Loans held for sale (at lower of cost or fair value) transferred to loans held for investment	$ 0	$ 65,802

Business, Basis of Presentation

Business, Basis of Presentation and Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2023
Accounting Policies [Abstract]
Business, Basis of Presentation and Summary of Significant Accounting Policies	Business, Basis of Presentation and Summary of Significant Accounting Policies a) Business Amerant Bancorp Inc. (the “Company”) is a Florida corporation incorporated in 1985, which has operated since January 1987. The Company is a bank holding company registered under the Bank Holding Company Act of 1956 (“BHC Act”), as a result of its 100% ownership of Amerant Bank, N.A. (the “Bank”). The Company’s principal office is in the City of Coral Gables, Florida. The Bank is a member of the Federal Deposit Insurance Corporation (“FDIC”), the Federal Reserve Bank of Atlanta (“Federal Reserve”) and the Federal Home Loan Bank of Atlanta (“FHLB”). The Bank has three main operating subsidiaries, Amerant Investments, Inc., a securities broker-dealer (“Amerant Investments”), Amerant Mortgage, LLC (“Amerant Mortgage”), a majority-owned mortgage lending company domiciled in Florida, and Elant Bank & Trust, a Grand-Cayman based trust company (the “Cayman Bank”). On August 3, 2023, the “Company” provided written notice to The Nasdaq Stock Market LLC (“Nasdaq”) of its determination to voluntarily withdraw the principal listing of the Company’s Class A common stock, $0.10 par value per share (the “Common Stock”), from Nasdaq and transfer the listing of the Common Stock to the New York Stock Exchange (“NYSE”). The Company’s Common Stock listing and trading on Nasdaq ended at market close on August 28, 2023, and trading commenced on the NYSE at market open on August 29, 2023 where it continues to trade under the stock symbol “AMTB”. Restructuring costs The Company continues to work at optimizing its operating structure to best support its business activities. In the nine months ended September 30, 2023, the Company recorded estimated contract termination and related costs of approximately $1.6 million in connection with the implementation of the multi-year outsourcing agreement with a recognized third party financial technology services provider entered into in 2021 ($0.3 million and $7.1 million in the three and nine month periods ended September 30, 2022, respectively). There were no contract termination costs in the three months ended September 30, 2023. The Company currently does not expect to incur additional significant contract termination costs in connection with the implementation of this agreement. During the three and nine month periods ended September 30, 2023, the Company recorded severance costs of approximately $0.5 million and $2.9 million, respectively, and branch closure expenses and related charges of $0.3 million and $2.3 million, respectively. In addition, in the nine months ended September 30, 2023, the Company recorded consulting and other professional fees of $4.8 million (none in the three months ended September 30, 2023), and a charge of $1.4 million related to the disposition of fixed assets due to the write off of in-development software (none in the three months ended September 30, 2023). During the three and nine month periods ended September 30, 2022, the Company recorded severance costs of approximately $0.4 million and $1.8 million, respectively, and consulting and other professional fees of $1.1 million and $2.4 million, respectively. In addition, in the nine months ended September 30, 2022, the Company recorded a lease impairment charge of $1.6 million mainly related to the closing of a branch in Pembroke Pines, Florida in 2022. Severance costs are included in “salaries and employees benefits expense” in the Company’s consolidated statement of operations and comprehensive (loss) income. Stock Repurchase Programs On December 19, 2022, the Company announced that the Board of Directors authorized a new repurchase program pursuant to which the Company may purchase, from time to time, up to an aggregate amount of $25 million of its shares of Class A common stock (the “2023 Class A Common Stock Repurchase Program”). The 2023 Class A Common Stock Repurchase Program is effective from January 1, 2023 until December 31, 2023. In the three and nine month periods ended September 30, 2023, the Company repurchased an aggregate of 142,188 shares of Class A common stock at a weighted average price of $19.05 per share, and 259,853 shares of Class A common stock at a weighted average price of $18.98 per share, respectively, under the 2023 Class A Common Stock Repurchase Program. The aggregate purchase price for these transactions was $2.7 million and $4.9 million in the three and nine month periods ended September 30, 2023, respectively, including transaction costs. In January 2022, the Company repurchased an aggregate of 652,118 shares of Class A common stock under a stock repurchase program to repurchase up to $50 million of the Company’s Class A common stock authorized by the Board of Directors in September 2021 (the “2021 Class A Common Stock Repurchase Program”). The aggregate purchase price for these transactions was approximately $22.1 million, including transaction costs. On January 31, 2022, the Company announced the completion of the 2021 Class A Common Stock Repurchase Program. See the 2022 Form 10-K for more details. On January 31, 2022, the Company announced that the Board of Directors authorized a new repurchase program pursuant to which the Company may purchase, from time to time, up to an aggregate amount of $50 million of its shares of Class A common stock (the “2022 Common Stock Repurchase Program”). In the nine months ended September 30, 2022, the Company repurchased an aggregate of 1,602,887 shares of Class A common stock at a weighted average price of $31.14 under the 2022 Common Stock Repurchase Program. The aggregate purchase price for these transactions was approximately $49.9 million, including transaction costs. On May 19, 2022, the Company announced the completion of the 2022 Common Stock Repurchase Program. There were no repurchases of shares of Class A common stock in the three months ended September 30, 2022. In the nine months ended September 30, 2023 and 2022, the Company’s Board of Directors authorized the cancellation of all shares of Class A common stock previously repurchased. As of September 30, 2023 and 2022, there were no shares of Class A common stock held as treasury stock. For more information about repurchase programs, see Note 18 to the Company’s consolidated financial statements in the Company’s annual report on Form 10-K for the year ended December 31, 2022, filed with the Securities and Exchange Commission (“SEC”), on March 1, 2023 (the “2022 Form 10-K”). Employee Stock Purchase Plan The Company offers an Employee Stock Purchase Plan (“ESPP”). The number of shares of Class A common stock issued in the nine months ended September 30, 2023 under the ESPP was 30,557. The Company recognized compensation expense of $0.1 million and $0.3 million in the three months ended September 30, 2023 and 2022, respectively, and $0.4 million and $0.3 million in the nine months ended September 30, 2023 and 2022, respectively, in connection with the ESPP. See the 2022 Form 10-K for more details on the ESPP. Dividends Set forth below are the details of dividends declared and paid by the Company in the three and nine month periods ended September 30, 2023 and 2022: Declaration Date Record Date Payment Date Dividend Per Share Dividend Amount 07/19/2023 08/15/2023 08/31/2023 $0.09 $3.0 million 04/19/2023 05/15/2023 05/31/2023 $0.09 $3.0 million 01/18/2023 02/13/2023 02/28/2023 $0.09 $3.0 million 07/20/2022 08/17/2022 08/31/2022 $0.09 $3.0 million 04/13/2022 05/13/2022 05/31/2022 $0.09 $3.0 million 01/19/2022 02/11/2022 02/28/2022 $0.09 $3.2 million On October 18, 2023, the Company’s Board of Directors declared a cash dividend of $0.09 per share of the Company’s Class A common stock. The dividend is payable on November 30, 2023, to shareholders of record on November 14, 2023. Business Acquisition On January 13, 2023 (the “Acquisition Date”), Amerant Mortgage completed the acquisition of certain assets and the assumption of certain liabilities of F&B Acquisition Group LLC (“F&B”), including access to an assembled workforce and other identifiable intangibles which collectively constitute a business (the “F&B Acquisition.”) The F&B Acquisition was recorded as a business acquisition using the acquisition method of accounting. The initial purchase price of approximately $2.0 million was paid in cash and included the fair value of certain loans held for sale of $1.0 million. The initial purchase price excludes any contingent consideration. The Company recorded preliminary goodwill of $1.0 million, which represents the excess of the initial purchase price over the estimated fair value of tangible and intangible assets acquired, net of the liabilities assumed. As of September 30, 2023, the Company has not completed its determination of the final allocation of the purchase price to the assets and liabilities of the F&B Acquisition, including any identifiable intangible assets and any contingent consideration. Any adjustment to the assets purchased and liabilities assumed with the F&B Acquisition, including adjustments from any identifiable intangible asset and contingent consideration, will result in an adjustment of goodwill. The final allocation of purchase price is expected to be finalized by December 31, 2023. Impairment on Investments Carried At Cost In the nine months ended September 30, 2023, the Company recorded an impairment charge of $2.0 million related to an investment carried at cost and included in other assets in the consolidated balance sheets. See the 2022 Form 10-K for more details on our investments carried at cost. Naming Rights In September 2023, the Company acquired exclusive naming rights to an arena in Broward County, Florida. The naming rights have been recorded as an intangible asset with an offsetting liability for related payments to be made in the future. The naming rights intangible asset is included in other assets in the Company’s consolidated balance sheets. The naming rights liability is included as part of other liabilities in the Company’s consolidated balance sheets. Bank Owned Life Insurance In October 2023, the Company restructured certain of its Bank Owned Life Insurance (“BOLI”) contracts, by surrendering existing lower-yielding policies and reinvesting the proceeds in higher-yielding policies. The restructuring had no material impact to results of operations. b) Basis of Presentation and Summary of Significant Accounting Policies Significant Accounting Policies The accompanying unaudited interim consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (“GAAP”) for interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required for a fair statement of financial position, results of operations and cash flows in conformity with GAAP. These unaudited interim consolidated financial statements reflect all adjustments that are, in the opinion of management, necessary for a fair statement of the results for the interim periods presented. These adjustments are of a normal, recurring nature. Interim period operating results may not be indicative of the operating results for a full year or any other period. These unaudited interim consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements as of December 31, 2022 and 2021 and for each of the three years in the period ended December 31, 2022 and the accompanying footnote disclosures for the Company, which are included in the 2022 Form 10-K. For a complete summary of our significant accounting policies, see Note 1 to the Company’s audited consolidated financial statements in the 2022 Form 10-K. Estimates The preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. Significant estimates made by management include: (i) the determination of the allowance for credit losses; (ii) the fair values of loans held for sale and securities, the value assigned to goodwill during periodic goodwill impairment tests, and the fair value of other real estate owned (“OREO”); (iii) the cash surrender value of bank owned life insurance; and (iv) the determination of whether the amount of deferred tax assets will more likely than not be realized. Management believes that these estimates are appropriate. Actual results could differ from these estimates. Reclassifications In the three and nine month periods ended September 30, 2023, loan-level derivative expenses are presented separately in the Company’s consolidated statement of operations and comprehensive (loss) income. Previously, these expenses were presented as a component of professional and other services fees in the Company’s consolidated statement of operations and comprehensive (loss) income. In the three and nine months ended September 30, 2023, OREO and repossessed assets, net expense is presented separately in the Company’s consolidated statement of operations and comprehensive (loss) income. OREO and repossessed assets expense includes expenses and revenue (rental income) from the operation of foreclosed property/assets as well as fair value adjustments and gains/losses from the sale of OREO and repossessed assets. In 2022, while OREO valuation expense was presented separately, all other OREO-related expenses were presented as part of other operating expenses in the Company’s consolidated statement of operations and comprehensive (loss) income. We had no other repossessed assets in 2022. Beginning in the three months ended September 30, 2023, the provision for credit losses for off-balance sheet exposures is included as part of provision for (reversal of) credit losses in the Company’s consolidated statements of comprehensive income (loss). Prior to that period, the provision for credit losses for off-balance sheet exposures was included as part of other operating expenses in the the Company’s consolidated statements of comprehensive income (loss). c) Recently Issued Accounting Pronouncements Issued and Adopted Guidance on Troubled Debt Restructurings In March 2022, the Financial Accounting Standards Board (“FASB”) issued guidance that eliminates the recognition and measurement guidance on troubled debt restructurings, or TDR, for creditors, and aligns it with existing guidance to determine whether a loan modification results in a new loan or a continuation of an existing loan. The guidance also requires enhanced disclosures about certain loan modifications by creditors when a borrower is experiencing financial difficulty. The amended guidance is effective in periods beginning after December 15, 2022 using either a prospective or modified retrospective transition approach. Early adoption was permitted if an entity had already adopted the guidance on accounting for credit losses on financial instruments (“CECL”). The Company adopted this guidance on TDR as of January 1, 2023, and determined that its adoption had no material impact to the Company’s consolidated financial statements. Guidance on Accounting for Credit Losses on Financial Instruments In 2022, the Company adopted ASC Topic 326 on CECL. The Company adopted the CECL guidance as of the beginning of the reporting period of adoption, January 1, 2022, using a modified retrospective approach for all its financial assets measured at amortized cost and off-balance sheet credit exposures. For more details on the adoption of CECL, see the 2022 Form 10-K. The following table reflects the impact of adopting CECL on the allowance for credit losses (“ACL”) and other line items on the Company’s consolidated financial statements as of and for the three and nine month periods ended September 30, 2022: Consolidated Balance Sheets As of September 30, 2022 (in thousands) As Reported As Recast (1) Changes Assets Allowance for credit losses $ 53,711 $ 76,473 $ 22,762 Deferred tax assets, net 45,791 51,644 5,853 Liabilities Accounts payable, accrued liabilities and other liabilities 181,693 181,863 170 Stockholders’ Equity Retained earnings 588,495 571,416 (17,079) Consolidated Statements of Operations Three Months Ended September 30, 2022 Nine Months Ended September 30, 2022 (in thousands, except per share amounts) As Reported As Recast (1) Changes As Reported As Recast (1) Changes Total interest income $ 89,137 $ 89,137 $ — $ 225,402 $ 225,402 $ — Total interest expense 19,240 19,240 — 40,915 40,915 — Net interest income 69,897 69,897 — 184,487 184,487 — Provision for (reversal of) credit losses 3,000 7,314 4,314 (7,000) (2,912) 4,088 Net interest income after provision for (reversal of) credit losses 66,897 62,583 (4,314) 191,487 187,399 (4,088) Total noninterest income 15,956 15,956 — 42,912 42,912 — Total noninterest expense 56,113 56,113 — 179,172 179,172 — Income before income taxes 26,740 22,426 (4,314) 55,227 51,139 (4,088) Income tax expense (5,864) (4,936) 928 (11,875) (10,994) 881 Net income before attribution of noncontrolling interest 20,876 17,490 (3,386) 43,352 40,145 (3,207) Noncontrolling interest (44) (44) — (1,192) (1,192) — Net income attributable to Amerant Bancorp Inc. $ 20,920 $ 17,534 $ (3,386) $ 44,544 $ 41,337 $ (3,207) Basic earnings per common share $ 0.62 $ 0.52 $ (0.10) $ 1.31 $ 1.22 $ (0.09) Diluted earnings per common share $ 0.62 $ 0.52 $ (0.10) $ 1.30 $ 1.21 $ (0.09) Cash dividends declared per common share $ 0.09 $ 0.09 $ — $ 0.27 $ 0.27 $ — __________________ (1) Quarterly amounts previously reported on our quarterly reports on Form 10-Q for the periods ended March 31, 2022, June 30, 2022 and September 30, 2022 do not reflect the adoption of CECL. In the fourth quarter of 2022, the Company recorded a provision for credit losses totaling $20.9 million, including $11.1 million related to the retroactive effect of adopting CECL for all previous quarterly periods in the year ended December 31, 2022, including loan growth and changes to macro-economic conditions during the period. Quarterly amounts included in the 2022 Form 10-K and in this Form 10-Q reflect the impacts of the adoption of CECL on each interim period of 2022. See the 2022 Form 10-K for more details on the adoption of CECL. Guidance on Fair Value Hedges In March 2022, the FASB issued amended guidance to expand and clarify existing guidance on fair value hedge accounting of interest rate risk for portfolios of financial assets. The amendments clarify, among others, the “last-of-layer” method for making the fair value hedge accounting for these portfolios more accessible. The amendment also improves the last-of-layer concepts and expands them to non-prepayable financial assets, allowing more flexibility in the structure of derivatives used to hedge interest rate risk. The amended guidance is effective for public business entities for fiscal years beginning after December 15, 2022, and interim periods within those fiscal years. For all other entities, the amended guidance is effective for fiscal years beginning after December 15, 2023. The amended guidance is available for early adoption. The Company adopted this guidance as of January 1, 2023, and determined that its adoption had no impact to its consolidated financial statements. Issued and Not Yet Adopted For a complete summary of recently issued accounting guidance that has not yet been adopted, see Note 1 to the Company’s audited consolidated financial statements in the 2022 Form 10-K. d) Subsequent Events The effects of other significant subsequent events, if any, have been recognized or disclosed in these unaudited interim consolidated financial statements.

Interest Earning Deposits with

Interest Earning Deposits with Banks, Other Short-Term Investments and Restricted Cash	9 Months Ended
	Sep. 30, 2023
Cash and Cash Equivalents [Abstract]
Interest Earning Deposits with Banks, Other Short-Term Investments and Restricted Cash	Interest Earning Deposits with Banks, Other Short-Term Investments and Restricted Cash At September 30, 2023 and December 31, 2022, interest-earning deposits with banks were mainly comprised of deposits with the Federal Reserve and other U.S. banks of approximately $203 million and $229 million, respectively. At September 30, 2023 and December 31, 2022, the average interest rate on these deposits was approximately 5.58% and 1.79%, respectively. These deposits have no stated maturity dates. As of September 30, 2023, the Company held US Treasury Bills classified as part of other short-term investments in the Company’s consolidated balance sheets. At September 30, 2023, the Company held $6.0 million with an average yield of 4.65% related to these investments. These other short-term investments have a stated maturity of 90 days or less and as such are deemed cash and cash equivalents. There were no other short-term investments at December 31, 2022.

Securities

Securities	9 Months Ended
	Sep. 30, 2023
Investments, Debt and Equity Securities [Abstract]
Securities	Securities a) Debt Securities Debt securities available for sale Amortized cost, allowance for credit losses and approximate fair values of debt securities available for sale are summarized as follows: September 30, 2023 Amortized Gross Unrealized Allowance for Credit Losses Estimated (in thousands) Gains Losses U.S. government-sponsored enterprise debt securities (1) (2) $ 473,047 $ 26 $ (58,438) $ — $ 414,635 Corporate debt securities (2) 285,370 — (32,792) — 252,578 U.S. government agency debt securities (1) (2) 409,306 61 (53,380) — 355,987 Collateralized loan obligations 5,000 5 — — 5,005 Municipal bonds (1) 1,732 — (92) — 1,640 U.S. treasury securities 3,976 — (24) — 3,952 Total debt securities available for sale (3) $ 1,178,431 $ 92 $ (144,726) $ — $ 1,033,797 __________________ (1) Includes residential mortgage-backed securities. As of September 30, 2023, we had total residential-mortgage backed securities, included as part of total debt securities available for sale, with amortized cost of $769.4 million and fair value of $668.7 million. (2) Includes commercial mortgage-backed securities. As of September 30, 2023, we had total commercial mortgage-backed securities, included as part of total debt securities available for sale, with amortized cost of $101.1 million and fair value of $88.8 million . (3) Excludes accrued interest receivable of $6.3 million as of September 30, 2023, which is included as part of accrued interest receivable and other assets in the Company’s consolidated balance sheet. The Company did not record any write offs on accrued interest receivable related to these securities in the three and nine month periods ended September 30, 2023. December 31, 2022 Amortized Gross Unrealized Allowance for Credit Losses Estimated (in thousands) Gains Losses U.S. government sponsored enterprise debt securities (1) (2) $ 480,359 $ 981 $ (43,666) $ — $ 437,674 Corporate debt securities (2) 306,898 1 (26,199) — 280,700 U.S. government agency debt securities (1) (2) 373,593 42 (42,814) — 330,821 U.S. treasury securities 1,997 — (1) — 1,996 Municipal bonds (1) 1,731 — (75) — 1,656 Collateralized loan obligations 5,000 — (226) — 4,774 Total debt securities available for sale (3) $ 1,169,578 $ 1,024 $ (112,981) $ — $ 1,057,621 __________________ (1) Includes residential mortgage-backed securities. As of December 31, 2022, we had total residential-mortgage backed securities, included as part of total debt securities available for sale, with amortized cost of $743.0 million and fair value of $666.5 million. (2) Includes commercial mortgage-backed securities. As of December 31, 2022, we had total commercial mortgage-backed securities, included as part of total debt securities available for sale, with amortized cost of $91.0 million and fair value of $80.9 million. (3) Excludes accrued interest receivable of $5.6 million as of December 31, 2022, which is included as part of accrued interest receivable and other assets in the Company’s consolidated balance sheet. The Company did not record any write offs on accrued interest receivable related to these securities in 2022. The Company had investments in foreign corporate debt securities available for sale, primarily in Canada, of $9.8 million and $9.7 million at September 30, 2023 and December 31, 2022, respectively. At September 30, 2023 and December 31, 2022, the Company had no foreign sovereign or foreign government agency debt securities available for sale. Investments in foreign corporate debt securities available for sale are denominated in U.S. Dollars. In the three and nine month periods ended September 30, 2023 and 2022, proceeds from sales, redemptions and calls, gross realized gains, and gross realized losses of debt securities available for sale were as follows: Three Months Ended September 30, Nine Months Ended September 30, (in thousands) 2023 2022 2023 2022 Proceeds from sales, redemptions and calls of debt securities available for sale $ — $ 12,154 $ 1,240 $ 26,312 Gross realized gains $ — $ 22 $ — $ 71 Gross realized losses — — (10,760) — Realized (loss) gain, net $ — $ 22 $ (10,760) $ 71 The Company’s investment in debt securities available for sale with unrealized losses aggregated by the length of time that individual securities have been in a continuous unrealized loss position, are summarized below: September 30, 2023 Less Than 12 Months 12 Months or More Total (in thousands, except securities count) Number of Securities Estimated Unrealized Number of Securities Estimated Unrealized Estimated Unrealized U.S. government-sponsored enterprise debt securities 52 $ 79,491 $ (3,063) 335 $ 333,171 $ (55,375) $ 412,662 $ (58,438) Corporate debt securities 6 13,242 (673) 55 239,336 (32,119) 252,578 (32,792) U.S. government agency debt securities 30 43,592 (941) 167 294,482 (52,439) 338,074 (53,380) Municipal bonds — — — 3 1,640 (92) 1,640 (92) U.S. treasury securities 2 3,952 (24) — — — 3,952 (24) 90 $ 140,277 $ (4,701) 560 $ 868,629 $ (140,025) $ 1,008,906 $ (144,726) December 31, 2022 Less Than 12 Months 12 Months or More Total (in thousands, except securities count) Number of Securities Estimated Unrealized Number of Securities Estimated Unrealized Estimated Unrealized U.S. government sponsored enterprise debt securities 250 $ 292,595 $ (22,315) 108 $ 96,986 $ (21,351) $ 389,581 $ (43,666) Corporate debt securities 50 203,516 (13,374) 14 72,190 (12,825) 275,706 (26,199) U.S. government agency debt securities 92 88,056 (4,976) 104 240,668 (37,838) 328,724 (42,814) Municipal bonds 3 1,656 (75) — — — 1,656 (75) U.S. treasury securities 1 1,996 (1) — — — 1,996 (1) Collateralized Loan Obligations 1 4,774 (226) — — — 4,774 (226) 397 $ 592,593 $ (40,967) 226 $ 409,844 $ (72,014) $ 1,002,437 $ (112,981) U.S. Government Sponsored Enterprise Debt Securities and U.S. Government Agency Debt Securities At September 30, 2023 and December 31, 2022, the Company held certain debt securities issued or guaranteed by the U.S. government and U.S. government-sponsored entities and agencies. The Company does not intend to sell these debt securities and it is more likely than not that it will not be required to sell the securities before their anticipated recovery. The Company evaluates these securities for credit losses by reviewing current market conditions, the extent and nature of changes in fair value, credit ratings, default and delinquency rates and current analysts’ evaluations. The Company believes the decline in fair value on these debt securities is attributable to changes in interest rates and investment securities markets, generally, and not credit quality. As a result, the Company did not record an ACL on these securities as of September 30, 2023 and December 31, 2022. Corporate Debt Securities Investments in corporate debt securities available for sale in an unrealized loss position as of September 30, 2023 include: (i) securities considered “investment-grade-quality,” primarily issued by financial institutions, with a fair value of $229.7 million ($258.8 million at December 31, 2022) and total unrealized losses of $28.7 million at that date ($24.1 million at December 31, 2022), and (ii) securities considered “non-investment-grade-quality,” primarily issued by financial institutions and companies in the technology industry, with a fair value of $22.9 million ($16.9 million at December 31, 2022) and total unrealized losses of $4.1 million at that date ($2.1 million at December 31, 2022). As of September 30, 2023 and December 31, 2022 , our corporate debt securities available for sale issued by financial institutions were primarily “investment-grade-quality”, and had a fair value of $182.2 million and $206.3 million, respectively, and net unrealized losses of $22.9 million and $16.6 million, respectively. At December 31, 2022, the Bank had one corporate debt security held for sale (the “Signature Bond”) issued by Signature Bank, N.A. (“Signature”) with a fair value of $9.1 million and unrealized loss of $0.9 million. At December 31, 2022, the Signature Bond was in an unrealized loss position for less than one year. On March 12, 2023, Signature was closed by the New York State Department of Financial Services, which appointed the FDIC as receiver. The FDIC, as receiver, announced that shareholders and certain unsecured debt holders will not be protected. On March 27, 2023, the Bank sold the Signature Bond in an open market transaction and realized a pretax loss on sale of approximately $9.5 million which is recorded in the consolidated statement of comprehensive income (loss) for the nine months ended September 30, 2023. In May 2023, the Company sold a portion of its investment in a corporate debt security held for sale issued by a financial institution, to reduce single point exposure. The Company had proceeds of $0.8 million and realized a pre-tax loss of $1.2 million in connection with this transaction. This loss was recorded in the consolidated statement of comprehensive (loss) income for the nine months ended September 30, 2023. The Company does not intend to sell its investments in corporate debt securities available for sale and it is more likely than not that it will not be required to sell these investments before their anticipated recovery. The Company evaluates corporate debt securities for credit losses by reviewing various qualitative and quantitative factors such as current market conditions, the extent and nature of changes in fair value, credit ratings, default and delinquency rates, and current analysts’ evaluations. The Company believes the decline in fair value on these debt securities is attributable to changes in interest rates and investment securities markets, generally, and not credit quality. As a result, the Company did not record an ACL on these securities as of September 30, 2023 and December 31, 2022. Debt securities held to maturity Amortized cost and approximate fair values of debt securities held to maturity are summarized as follows: September 30, 2023 Amortized Gross Unrealized Estimated Allowance for Credit Losses (in thousands) Gains Losses U.S. government agency debt securities (1) $ 65,002 $ — $ (10,338) $ 54,664 $ — U.S. government sponsored enterprise debt securities(1) (2) 165,252 — (24,751) 140,501 — Total debt securities held to maturity (3) $ 230,254 $ — $ (35,089) $ 195,165 $ — __________________ (1) Includes residential mortgage-backed securities. As of September 30, 2023, we had total residential mortgage-backed securities, included as part of total debt securities held to maturity, with amortized cost of $202.6 million and fair value of $170.6 million. (2) Includes commercial mortgage-backed securities. As of September 30, 2023, we had total commercial mortgage-backed securities, included as part of total debt securities held to maturity, with amortized cost of $27.6 million and fair value of $24.5 million. (3) Excludes accrued interest receivable of $0.7 million as of September 30, 2023, which is included as part of accrued interest receivable and other assets in the Company’s consolidated balance sheet. The Company did not record any write offs on accrued interest receivable related to these securities in the three and nine month periods ended September 30, 2023. December 31, 2022 Amortized Gross Unrealized Estimated Allowance for Credit Losses (in thousands) Gains Losses U.S. government agency debt securities (1) $ 68,556 $ 109 $ (7,778) $ 60,887 $ — U.S. government sponsored enterprise debt securities (1) (2) 173,545 — (16,823) 156,722 — Total debt securities held to maturity (3) $ 242,101 $ 109 $ (24,601) $ 217,609 $ — __________________ (1) Includes residential mortgage-backed securities. As of December 31, 2022, we had total residential mortgage-backed securities, included as part of total debt securities held to maturity, with amortized cost of $213.9 million and fair value of $191.4 million. (2) Includes commercial mortgage-backed securities. As of December 31, 2022, includes total commercial mortgage-backed securities with amortized cost of $28.2 million and fair value of $26.2 million. (3) Excludes accrued interest receivable of $0.8 million as of December 31, 2022, which is included as part of accrued interest receivable and other assets in the Company’s consolidated balance sheet. The Company did not record any write offs on accrued interest receivable related to these securities in 2022. The Company’s investment in debt securities held to maturity with unrealized losses aggregated by length of time that individual securities have been in a continuous unrealized loss position, are summarized below: September 30, 2023 Less Than 12 Months 12 Months or More Total (in thousands) Number of Securities Estimated Unrealized Number of Securities Estimated Unrealized Estimated Unrealized U.S. government agency debt securities 1 $ 9,425 $ (500) 12 $ 45,239 $ (9,838) $ 54,664 $ (10,338) U.S. government sponsored enterprise debt securities — — — 34 140,501 (24,751) 140,501 (24,751) 1 $ 9,425 $ (500) 46 $ 185,740 $ (34,589) $ 195,165 $ (35,089) December 31, 2022 Less Than 12 Months 12 Months or More Total (in thousands) Number of Securities Estimated Unrealized Number of Securities Estimated Unrealized Estimated Unrealized U.S. government agency debt securities — $ — $ — 12 $ 50,755 $ (7,778) $ 50,755 $ (7,778) U.S. government sponsored enterprise debt securities 31 142,033 (9,085) 3 14,689 (7,738) 156,722 (16,823) 31 $ 142,033 $ (9,085) 15 $ 65,444 $ (15,516) $ 207,477 $ (24,601) Beginning January 1, 2022, the Company evaluates all debt securities held to maturity quarterly to determine if any securities in an unrealized loss position require an ACL. The Company considers that all debt securities held to maturity issued or sponsored by the U.S. government are considered to be risk-free as they have the backing of the government. The Company believes there are no current expected credit losses on these securities and, therefore, did not record an ACL on any of its debt securities held to maturity as of September 30, 2023 and December 31, 2022. The Company monitors the credit quality of held to maturity securities through the use of credit ratings. Credit ratings are monitored by the Company on at least a quarterly basis. As of September 30, 2023 and December 31, 2022, all debt securities held to maturity held by the Company were rated investment grade or higher. Contractual maturities Contractual maturities of debt securities at September 30, 2023 are as follows: Available for Sale Held to Maturity (in thousands) Amortized Estimated Amortized Estimated Within 1 year $ 2,705 $ 2,682 $ — $ — After 1 year through 5 years 125,842 118,742 6,603 3,247 After 5 years through 10 years 228,020 199,276 14,634 13,358 After 10 years 821,864 713,097 209,017 178,560 $ 1,178,431 $ 1,033,797 $ 230,254 $ 195,165 b) Equity securities with readily available fair value not held for trading As of September 30, 2023, the Company had an equity security with readily available fair value not held for trading with an original cost of $2.5 million and fair value of $2.4 million, which was purchased in the second quarter of 2023. As of December 31, 2022, the Company had equity securities with readily available fair value not held for trading with an original cost of $12.7 million and fair value of $11.4 million. These equity securities have no stated maturities. The Company recognized net unrealized losses of $0.1 million and unrealized gains of $1.5 million in the three month periods ended September 30, 2023 and 2022, respectively, and unrealized net losses of $0.1 million and $0.4 million in the nine month periods ended September 30, 2023 and 2022, respectively, related to the change in market value of these equity securities. In the three months ended March 31, 2023, the Company sold its equity securities with readily available fair value not held for trading, with a total fair value of $11.2 million at the time of sale, and recognized a net loss of $0.2 million in connection with this transaction. c) Securities Pledged As of September 30, 2023 and December 31, 2022, the Company had $159.5 million and $314.5 million, respectively, in securities pledged as collateral. These securities were pledged to secure advances from the Federal Home Loan Bank, public funds and for other purposes as permitted by law.

Loans

Loans	9 Months Ended
	Sep. 30, 2023
Receivables [Abstract]
Loans	Loans a) Loans held for investment Loans held for investment consist of the following loan classes: (in thousands) September 30, December 31, Real estate loans Commercial real estate Non-owner occupied $ 1,593,571 $ 1,615,716 Multi-family residential 771,654 820,023 Land development and construction loans 301,938 273,174 2,667,163 2,708,913 Single-family residential 1,371,194 1,102,845 Owner occupied 1,129,921 1,046,450 5,168,278 4,858,208 Commercial loans (1) 1,452,759 1,381,234 Loans to financial institutions and acceptances 13,353 13,292 Consumer loans and overdrafts 438,997 604,460 Total loans held for investment, gross (2) $ 7,073,387 $ 6,857,194 _________________ (1) At September 30, 2023 and December 31, 2022, includes equipment loans and leases totaling $49.3 million and $45.3 million, respectively. (2) Excludes accrued interest receivable. At September 30, 2023 and December 31, 2022, loans with outstanding principal balances of $2.5 billion and $1.2 billion, respectively, were pledged as collateral to secure advances from the FHLB. The amounts above include loans under syndication facilities of approximately $312 million and $367 million at September 30, 2023 and December 31, 2022, respectively, which include Shared National Credit facilities and agreements to enter into credit agreements with other lenders (club deals) and other agreements. In addition, consumer loans and overdrafts in the table above include indirect consumer loans purchased totaling $254.7 million and $433.3 million at September 30, 2023 and December 31, 2022, respectively. International loans included above were $103.3 million and $99.2 million at September 30, 2023 and December 31, 2022, respectively, mainly single-family residential loans. These loans are net of collateral of cash, cash equivalents or other financial instruments totaling $6.6 million and $6.3 million as of September 30, 2023 and December 31, 2022, respectively. The Company purchased single-family residential loans totaling $10.3 million and $110.3 million in the three months ended September 30, 2023 and 2022, respectively, and $17.5 million and $132.1 million in the nine months ended September 30, 2023 and 2022, respectively. In the three and nine month periods ended September 30, 2022, the Company purchased $91 million and $345 million, respectively, in indirect consumer loans. There were no purchases of indirect consumer loans in the three and nine month periods ended September 30, 2023. The age analyses of the loan portfolio by class as of September 30, 2023 and December 31, 2022, are summarized in the following tables: September 30, 2023 Total Loans, Past Due (in thousands) Current 30-59 60-89 Greater than Total Past Real estate loans Commercial real estate Non-owner occupied $ 1,593,571 $ 1,593,571 $ — $ — $ — $ — Multi-family residential 771,654 748,075 235 — 23,344 23,579 Land development and construction loans 301,938 301,938 — — — — 2,667,163 2,643,584 235 — 23,344 23,579 Single-family residential 1,371,194 1,369,078 — 1,845 271 2,116 Owner occupied 1,129,921 1,124,503 1,393 1,229 2,796 5,418 5,168,278 5,137,165 1,628 3,074 26,411 31,113 Commercial loans 1,452,759 1,442,915 3,225 4,209 2,410 9,844 Loans to financial institutions and acceptances 13,353 13,353 — — — — Consumer loans and overdrafts 438,997 433,444 2,995 2,558 — 5,553 $ 7,073,387 $ 7,026,877 $ 7,848 $ 9,841 $ 28,821 $ 46,510 December 31, 2022 Total Loans, Past Due (in thousands) Current 30-59 60-89 Greater than Total Past Real estate loans Commercial real estate Non-owner occupied $ 1,615,716 $ 1,615,716 $ — $ — $ — $ — Multi-family residential 820,023 818,394 1,387 242 — 1,629 Land development and construction loans 273,174 273,174 — — — — 2,708,913 2,707,284 1,387 242 — 1,629 Single-family residential 1,102,845 1,098,310 3,140 150 1,245 4,535 Owner occupied 1,046,450 1,039,928 172 6,014 336 6,522 4,858,208 4,845,522 4,699 6,406 1,581 12,686 Commercial loans 1,381,234 1,373,042 1,523 475 6,194 8,192 Loans to financial institutions and acceptances 13,292 13,292 — — — — Consumer loans and overdrafts 604,460 601,921 2,439 62 38 2,539 $ 6,857,194 $ 6,833,777 $ 8,661 $ 6,943 $ 7,813 $ 23,417 Nonaccrual status The following tables present the amortized cost basis of loans on nonaccrual status and loans past due over 90 days and still accruing as of September 30, 2023 and December 31, 2022: As of September 30, 2023 (in thousands) Nonaccrual Loans With No Related Allowance Nonaccrual Loans With Related Allowance Total Nonaccrual Loans (1) Loans Past Due Over 90 Days and Still Accruing Real estate loans Commercial real estate Nonowner occupied $ — $ — $ — $ — Multi-family residential — 23,344 $ 23,344 — — 23,344 23,344 — Single-family residential 843 1,690 $ 2,533 — Owner occupied 1,951 149 2,100 — 2,794 25,183 $ 27,977 — Commercial loans 959 3,754 $ 4,713 504 Consumer loans and overdrafts 1 — 1 — Total $ 3,754 $ 28,937 $ 32,691 $ 504 As of December 31, 2022 (in thousands) Nonaccrual Loans With No Related Allowance Nonaccrual Loans With Related Allowance Total Nonaccrual Loans (1) Loans Past Due Over 90 Days and Still Accruing Real estate loans Commercial real estate Nonowner occupied $ 20,057 $ — $ 20,057 $ — Multi-family residential — — — — 20,057 — 20,057 — Single-family residential — 1,526 1,526 253 Owner occupied 5,936 334 6,270 — 25,993 1,860 27,853 253 Commercial loans 482 8,789 9,271 183 Consumer loans and overdrafts — 4 4 35 Total $ 26,475 $ 10,653 $ 37,128 $ 471 The Company did not recognize any interest income on nonaccrual loans during the three and nine month periods ended September 30, 2023 and 2022. b) Loans held for sale Loans held for sale consist of the following loan classes: (in thousands) September 30, December 31, 2022 Loans held for sale at the lower of fair value or cost Real estate loans Commercial real estate Non-owner occupied $ 43,256 $ — Total loans held for sale at the lower of fair value or cost (1) 43,256 — Mortgage loans held for sale at fair value Land development and construction loans (2) 6,931 9,424 Single-family residential (3) 19,022 53,014 Total loans held for sale at fair value (4) 25,953 62,438 Total loans held for sale (5)(6) $ 69,209 $ 62,438 _______________ (1) In the third quarter of 2023, the Company transferred a New York-based CRE loan held for investment to the loans held for sale category, and recognized a valuation allowance of $5.6 million as result of the fair value adjustment of this loan. The Company subsequently sold this loan and there was no material impact to the Company’s results of operations as result of this transaction. (2) In the nine months ended September 30, 2023, the Company transferred approximately $14 million in land development and construction loans held for sale to the loans held for investment category. (3) In the nine months ended September 30, 2023, the Company transferred approximately $81 million in single-family residential loans held for sale to the loans held for investment category. (4) Loans held for sale in connection with Amerant Mortgage’s ongoing business. (5) Remained current and in accrual status at each of the periods shown. (6) Excludes accrued interest receivable. c) Concentration of risk The Company’s loan portfolio is dependent mostly on the economic conditions that affect South Florida, Tampa Bay and the greater Houston and New York City areas. The Company manages diversification of its loan portfolio held for investment and held for sale, through policies with limitations primarily for exposure to individual or related debtors, economic sectors, geography, loan types, and for country risk exposure. d) Accrued interest receivable on loans Accrued interest receivable on total loans, including loans held for investment and held for sale, was $33.0 million and $27.7 million as of September 30, 2023 and December 31, 2022, respectively. In the three and nine month periods ended September 30, 2023, the Company reversed approximately $0.1 million and $0.5 million, respectively, of accrued interest receivable against interest income in connection with real estate and commercial loans placed in non-accrual status during the periods. In the three months ended September 30, 2022, the Company reversed approximately $0.3 million of accrued interest receivable against interest income in connection with consumer loans and overdrafts placed in non-accrual status during the period. In the nine months ended September 30, 2022, the Company reversed approximately $0.6 million of accrued interest receivable against interest income in connection with loans placed in non-accrual status during the period, including: (i) $0.5 million related to consumer loans and overdrafts, and (ii) a total of $0.1 million related to real estate and commercial loans.

Allowance for Credit Losses

Allowance for Credit Losses	9 Months Ended
	Sep. 30, 2023
Receivables [Abstract]
Allowance for Credit Losses	Allowance for Credit Losses The analyses by loan segment of the changes in the ACL for the three and nine month periods ended September 30, 2023 and 2022 is summarized in the following tables: Three Months Ended September 30, 2023 (in thousands) Real Estate Commercial Financial Consumer Total Balance at beginning of the period $ 42,238 $ 36,626 $ — $ 27,092 $ 105,956 (Reversal of ) provision for credit losses - loans (3,067) 4,852 — 5,615 7,400 Loans charged-off (90) (9,288) — (6,441) (15,819) Recoveries 10 736 — 490 1,236 Balance at end of the period $ 39,091 $ 32,926 $ — $ 26,756 $ 98,773 Nine Months Ended September 30, 2023 (in thousands) Real Estate Commercial Financial Consumer Total Balance at beginning of the period $ 25,237 $ 25,888 $ — $ 32,375 $ 83,500 Provision for credit losses - loans 13,655 20,639 — 13,883 48,177 Loans charged-off (90) (18,715) — (20,428) (39,233) Recoveries 289 5,114 — 926 6,329 Balance at end of the period $ 39,091 $ 32,926 $ — $ 26,756 $ 98,773 Three Months Ended September 30, 2022 Recast (1) (in thousands) Real Estate Commercial Financial Consumer Total Balance at beginning of the period $ 20,459 $ 21,152 $ — $ 28,864 $ 70,475 Provision for credit losses - loans (1) 2,869 927 — 3,518 7,314 Loans charged-off — (99) — (1,712) (1,811) Recoveries 12 443 — 40 495 Balance at end of the period (1) $ 23,340 $ 22,423 $ — $ 30,710 $ 76,473 _______________ (1) Recast amounts reflect the impact of the adoption of CECL effective as of January 1, 2022. See Note 1 “Business, Basis of Presentation and Summary of Significant Accounting Policies” for additional information. Nine Months Ended September 30, 2022 Recast (1) (in thousands) Real Estate Commercial Financial Consumer Total Balance at beginning of the period $ 17,952 $ 38,979 $ 42 $ 12,926 $ 69,899 Cumulative effect of adoption of accounting principle (1) 17,418 (8,281) (42) 9,579 18,674 (Reversal of) provision for credit losses - loans (1) (12,056) (2,435) — 11,579 (2,912) Loans charged-off — (7,979) — (3,674) (11,653) Recoveries 26 2,139 — 300 2,465 Balance at end of the period (1) $ 23,340 $ 22,423 $ — $ 30,710 $ 76,473 ______________ (1) Recast amounts reflect the impact of the adoption of CECL effective as of January 1, 2022. See Note 1 “Business, Basis of Presentation and Summary of Significant Accounting Policies” for additional information. The ACL was determined utilizing a reasonable and supportable forecast period. The ACL was determined using a weighted-average of various economic scenarios provided by a third-party, and incorporated qualitative components. There has not been material changes in our policies and methodology to estimate the ACL in the three and nine month periods ended September 30, 2023. The ACL increased by $15.3 million, or 18.3% at September 30, 2023, compared to December 31, 2022. The ACL as a percentage of total loans held for investment was 1.40% at September 30, 2023 compared to 1.22% at December 31, 2022. The provision for credit losses on loans in the nine months ended September 30, 2023 was partially offset by net charge-offs. During the third quarter of 2023, the provision for credit losses on loans included $7.6 million to cover charge-offs and $1.4 million due to loan composition and volume changes. These provision requirements were partially offset by a $0.4 million release due to credit quality and macroeconomic factor updates and a $1.2 million release due to recoveries. I n the first nine months of 2023, the provision for credit losses on loans includes $36.3 million in additional reserve requirements for loan charge-offs and credit quality, $2.3 million to account for loan growth and composition in the period and $9.6 million to reflect updated macroeconomic factors and loss factor update. The following is a summary of net proceeds from sales of loans held for investment by portfolio segment: Three Months Ended September 30, Real Estate Commercial Financial Consumer Total 2023 $ 20,500 $ 6,909 $ — $ — $ 27,409 2022 $ — $ 6,483 $ — $ — $ 6,483 Nine Months Ended September 30, Real Estate Commercial Financial Consumer Total 2023 $ 34,075 $ 7,796 $ — $ — $ 41,871 2022 $ 11,566 $ 6,483 $ — $ 1,313 $ 19,362 Loan Modifications to Borrowers Experiencing Financial Difficulty The Company modifies loans related to borrowers experiencing financial difficulties by providing multiple types of concessions. Typically, one type of concession, such as a term extension, is granted initially. If the borrower continues to experience financial difficulty, another concession, such as principal forgiveness, may be granted. The Company had no new loan modifications to borrowers experiencing financial difficulty during the three and nine month periods ended September 30, 2023. There were no loans that defaulted in the three and nine month periods ended September 30, 2023 and had been modified within 12 months preceding the payment default related to these modifications. Troubled Debt Restructurings As result of adoption of guidance related to CECL effective as of January 1, 2023, the Company had no reportable balances related to TDRs as of and for the three and nine month periods ended September 30, 2023. See Note 1 “Business, Basis of Presentation and Summary of Significant Accounting Policies” for additional information. There were no new TDRs in the three and nine month periods ended September 30, 2022. In addition, during the three and nine month periods ended September 30, 2022, there were no TDR loans that subsequently defaulted within the 12 months of restructuring in the three and nine month periods ended September 30, 2022. Credit Risk Quality The sufficiency of the ACL is reviewed at least quarterly by the Chief Risk Officer and the Chief Financial Officer. The Board of Directors considers the ACL as part of its review of the Company’s consolidated financial statements. As of September 30, 2023 and December 31, 2022, the Company believes the ACL to be sufficient to absorb expected credit losses in the loans portfolio in accordance with GAAP. Loans may be classified but not considered collateral dependent due to one of the following reasons: (1) the Company has established minimum dollar amount thresholds for individual assessment of expected credit losses, which results in loans under those thresholds being excluded from individual assessment of expected credit losses; and (2) classified loans may be considered in the assessment because the Company expects to collect all amounts due. As part of the on-going monitoring of the credit quality of the Company’s loan portfolio, management tracks certain credit quality indicators including trends related primarily to (i) the risk rating of loans, (ii) the loan payment status, (iii) net charge-offs, (iv) nonperforming loans and (v) the general economic conditions in the main geographies where the Company’s borrowers conduct their businesses. The Company considers the views of its regulators as to loan classification and in the process of estimating expected credit losses. The Company utilizes an internal risk rating system to identify the risk characteristics of each of its loans, or group of homogeneous loans such as consumer loans. Internal risk ratings are updated on a continuous basis on a scale from 1 (worst credit quality) to 10 (best credit quality). Loans are then grouped in five master risk categories for purposes of monitoring rising levels of potential loss risks and to enable the activation of collection or recovery processes as defined in the Company’s Credit Risk Policy. Internal risk ratings are considered the most meaningful indicator of credit quality for commercial loans. Generally, internal risk ratings for commercial real estate loans and commercial loans with balances over $3 million are updated at least annually and more frequently if circumstances indicate that a change in risk rating may be warranted. For consumer loans, single-family residential loans and smaller commercial loans under $3 million, risk ratings are updated based on the loans past due status.The following is a summary of the master risk categories and their associated loan risk ratings, as well as a description of the general characteristics of the master risk category: Loan Risk Rating Master risk category Nonclassified 4 to 10 Classified 1 to 3 Substandard 3 Doubtful 2 Loss 1 N onclassified This category includes loans considered as Pass (5-10) and Special Mention (4). A loan classified as Pass is considered of sufficient quality to preclude a lower adverse rating. These loans are generally well protected by the current net worth and paying capacity of the borrower or by the value of any collateral received. Special Mention loans are defined as having potential weaknesses that deserve management’s close attention which, if left uncorrected, could potentially result in further credit deterioration. Special Mention loans may include loans originated with certain credit weaknesses or that developed those weaknesses since their origination. Classified This classification indicates the presence of credit weaknesses which could make loan repayment unlikely, such as partial or total late payments and other contractual defaults. Substandard A loan classified substandard is inadequately protected by the sound worth and paying capacity of the borrower or the collateral pledged. They are characterized by the distinct possibility that the Company will sustain some loss if the credit weaknesses are not corrected. Loss potential, while existing in the aggregate amount of substandard loans, does not have to exist in individual assets. Doubtful These loans have all the weaknesses inherent in a loan classified as substandard with the added characteristic that the weaknesses make collection or liquidation in full, on the basis of currently existing facts, conditions, and values, highly questionable and improbable. These are poor quality loans in which neither the collateral, if any, nor the financial condition of the borrower presently ensure collection in full in a reasonable period of time. As a result, the possibility of loss is extremely high. Loss Loans classified as loss are considered uncollectible and of such little value that the continuance as bankable assets is not warranted. This classification does not mean that the assets have absolutely no recovery or salvage value, but not to the point where a write-off should be deferred even though partial recoveries may occur in the future. This classification is based upon current facts, not probabilities. As a result, loans in this category should be promptly charged off in the period in which they are determined to be uncollectible. Loans held for investment by Credit Quality Indicators The following tables present Loans held for investment by credit quality indicators and year of origination as of September 30, 2023 and December 31, 2022: September 30, 2023 Term Loans Amortized Cost Basis by Origination Year (in thousands) 2023 2022 2021 2020 2019 Prior Revolving Loans Total Real estate loans Commercial real estate Nonowner occupied Credit Risk Rating: Nonclassified Pass $ 99,056 $ 191,221 $ 597,265 $ 35,803 $ 90,311 $ 402,213 $ 177,702 $ 1,593,571 Special Mention — — — — — — — — Classified Substandard — — — — — — — — Doubtful — — — — — — — — Loss — — — — — — — — Total Nonowner occupied 99,056 191,221 597,265 35,803 90,311 402,213 177,702 1,593,571 Multi-family residential Credit Risk Rating: Nonclassified Pass 1,801 70,396 105,857 26,605 117,535 120,969 305,147 748,310 Special Mention — — — — — — — — Classified Substandard — — — — — 23,344 — 23,344 Doubtful — — — — — — — — Loss — — — — — — — — Total Multi-family residential 1,801 70,396 105,857 26,605 117,535 144,313 305,147 771,654 Land development and construction loans Credit Risk Rating: Nonclassified Pass 42,384 9,735 28,911 21,945 — 26,928 172,035 301,938 Special Mention — — — — — — — — Classified Substandard — — — — — — — — Doubtful — — — — — — — — Loss — — — — — — — — Total land development and construction loans 42,384 9,735 28,911 21,945 — 26,928 172,035 301,938 Single-family residential Credit Risk Rating: Nonclassified Pass 286,064 460,287 181,306 65,722 21,041 71,615 282,074 1,368,109 Special Mention — — — — — — — — Classified Substandard — — — — — 691 2,394 3,085 Doubtful — — — — — — — — Loss — — — — — — — — Total Single-family residential 286,064 460,287 181,306 65,722 21,041 72,306 284,468 1,371,194 Owner occupied Credit Risk Rating: Nonclassified Pass 143,861 262,104 434,620 20,904 58,112 161,840 44,066 1,125,507 Special Mention — — — — — 354 1,880 2,234 Classified Substandard — — 1,316 — — 864 — 2,180 Doubtful — — — — — — — — Loss — — — — — — — — Total owner occupied 143,861 262,104 435,936 20,904 58,112 163,058 45,946 1,129,921 September 30, 2023 Term Loans Amortized Cost Basis by Origination Year (in thousands) 2023 2022 2021 2020 2019 Prior Revolving Loans Total Non-real estate loans Commercial Loans Credit Risk Rating: Nonclassified Pass 302,410 292,024 79,465 12,127 34,900 38,184 660,939 1,420,049 Special Mention 7,007 — — — — — 19,968 26,975 Classified Substandard — 623 17 106 1,777 854 2,355 5,732 Doubtful — — — — 3 — — 3 Loss — — — — — — — — Total commercial Loans 309,417 292,647 79,482 12,233 36,680 39,038 683,262 1,452,759 Loans to financial institutions and acceptances Credit Risk Rating: Nonclassified Pass — — — — — 13,353 — 13,353 Special Mention — — — — — — — — Classified Substandard — — — — — — — — Doubtful — — — — — — — — Loss — — — — — — — — Total loans to financial institutions and acceptances — — — — — 13,353 — 13,353 Consumer loans Credit Risk Rating: Nonclassified Pass 28,583 211,027 61,386 21,306 35 10 116,649 438,996 Special Mention — — — — — — — — Classified Substandard — — — — — 1 — 1 Doubtful — — — — — — — — Loss — — — — — — — — Total consumer loans 28,583 211,027 61,386 21,306 35 11 116,649 438,997 Total loans held for investment, gross $ 911,166 $ 1,497,417 $ 1,490,143 $ 204,518 $ 323,714 $ 861,220 $ 1,785,209 $ 7,073,387 December 31, 2022 Term Loans Amortized Cost Basis by Origination Year (in thousands) 2022 2021 2020 2019 2018 Prior Revolving Loans Total Real estate loans Commercial real estate Nonowner occupied Credit Risk Rating: Nonclassified Pass $ 177,852 $ 637,015 $ 34,525 $ 91,941 $ 82,385 $ 342,174 $ 221,333 $ 1,587,225 Special Mention — — — — — 8,378 — 8,378 Classified Substandard — — — 20,113 — — — 20,113 Doubtful — — — — — — — — Loss — — — — — — — — Total Nonowner occupied 177,852 637,015 34,525 112,054 82,385 350,552 221,333 1,615,716 Multi-family residential Credit Risk Rating: Nonclassified Pass 85,670 110,943 26,881 126,724 27,242 124,433 318,130 820,023 Special Mention — — — — — — — — Classified Substandard — — — — — — — — Doubtful — — — — — — — — Loss — — — — — — — — Total Multi-family residential 85,670 110,943 26,881 126,724 27,242 124,433 318,130 820,023 Land development and construction loans Credit Risk Rating: Nonclassified Pass 8,846 27,746 23,459 188 — 26,930 186,005 273,174 Special Mention — — — — — — — — Classified Substandard — — — — — — — — Doubtful — — — — — — — — Loss — — — — — — — — Total land development and construction loans 8,846 27,746 23,459 188 — 26,930 186,005 273,174 Single-family residential Credit Risk Rating: Nonclassified Pass 480,328 186,790 70,853 21,654 16,630 65,249 259,411 1,100,915 Special Mention — — — — — — — — Classified Substandard — — — — — 741 1,189 1,930 Doubtful — — — — — — — — Loss — — — — — — — — Total Single-family residential 480,328 186,790 70,853 21,654 16,630 65,990 260,600 1,102,845 Owner occupied Credit Risk Rating: Nonclassified Pass 256,816 479,961 22,341 63,629 21,790 162,411 33,146 1,040,094 Special Mention — — — — — — — — Classified Substandard 2,096 1,631 656 — 650 1,283 40 6,356 Doubtful — — — — — — — — Loss — — — — — — — — Total owner occupied 258,912 481,592 22,997 63,629 22,440 163,694 33,186 1,046,450 December 31, 2022 Term Loans Amortized Cost Basis by Origination Year (in thousands) 2022 2021 2020 2019 2018 Prior Revolving Loans Total Non-real estate loans Commercial Loans Credit Risk Rating: Nonclassified Pass 400,781 95,470 19,815 42,936 32,248 16,297 761,489 1,369,036 Special Mention — — — — 1,499 — 250 1,749 Classified Substandard — 84 267 194 27 984 8,890 10,446 Doubtful — — — 3 — — — 3 Loss — — — — — — — — Total commercial Loans 400,781 95,554 20,082 43,133 33,774 17,281 770,629 1,381,234 Loans to financial institutions and acceptances Credit Risk Rating: Nonclassified Pass — — — — — 13,292 — 13,292 Special Mention — — — — — — — — Classified Substandard — — — — — — — — Doubtful — — — — — — — — Loss — — — — — — — — Total loans to financial institutions and acceptances — — — — — 13,292 — 13,292 Consumer loans Credit Risk Rating: Nonclassified Pass 338,744 121,011 29,053 68 54 — 115,300 604,230 Special Mention — — — — — — — — Classified Substandard 98 128 — — — 4 — 230 Doubtful — — — — — — — — Loss — — — — — — — — Total consumer loans 338,842 121,139 29,053 68 54 4 115,300 604,460 Total loans held for investment, gross $ 1,751,231 $ 1,660,779 $ 227,850 $ 367,450 $ 182,525 $ 762,176 $ 1,905,183 $ 6,857,194 The following tables present gross charge-offs by year of origination for the periods presented: Three Months Ended September 30, 2023 Term Loans Charge-offs by Origination Year (in thousands) 2023 2022 2021 2020 2019 Prior Revolving Loans Total Quarter-To-Date Gross Charge-offs Real estate loans Commercial real estate Nonowner occupied $ — $ — $ — $ — $ — $ 90 $ — $ 90 Multi-family residential — — — — — — — — Land development and construction loans — — — — — — — — — — — — — 90 — 90 Single-family residential — — — — — — — — Owner occupied — — — — — — — — — — — — — 90 — 90 Commercial loans 108 534 46 4,868 1,814 1,918 — 9,288 Loans to financial institutions and acceptances — — — — — — — — Consumer loans and overdrafts 193 3,527 2,365 185 9 162 — 6,441 Total Quarter-To-Date Gross Charge-Offs $ 301 $ 4,061 $ 2,411 $ 5,053 $ 1,823 $ 2,170 $ — $ 15,819 Nine Months Ended September 30, 2023 Term Loans Charge-offs by Origination Year (in thousands) 2023 2022 2021 2020 2019 Prior Revolving Loans Total Year-To-Date Gross Charge-offs Real estate loans Commercial real estate Nonowner occupied $ — $ — $ — $ — $ — $ 90 $ — $ 90 Multi-family residential — — — — — — — — Land development and construction loans — — — — — — — — — — — — — 90 — 90 Single-family residential — — — — — 39 — 39 Owner occupied — — — — — — — — — — — — — 129 — 129 Commercial loans 108 9,308 216 5,026 1,814 2,243 — 18,715 Loans to financial institutions and acceptances — — — — — — — — Consumer loans and overdrafts 592 9,589 8,608 1,031 22 547 — 20,389 Total Year-To-Date Gross Charge-Offs $ 700 $ 18,897 $ 8,824 $ 6,057 $ 1,836 $ 2,919 $ — $ 39,233 Three Months Ended September 30, 2022 Term Loans Charge-offs by Origination Year (in thousands) 2022 2021 2020 2019 2018 Prior Revolving Loans Total Quarter-To-Date Gross Charge-offs Real estate loans Commercial real estate Nonowner occupied $ — $ — $ — $ — $ — $ — $ — $ — Multi-family residential — — — — — — — — Land development and construction loans — — — — — — — — — — — — — — — — Single-family residential — — — — — — — Owner occupied — — — — — — — — — — — — — — — — Commercial loans — — — — — 99 — 99 Loans to financial institutions and acceptances — — — — — — — — Consumer loans and overdrafts 622 785 305 — — — 1,712 Total Quarter-To-Date Gross Charge-Offs $ 622 $ 785 $ 305 $ — $ — $ 99 $ — $ 1,811 Nine Months Ended September 30, 2022 Term Loans Charge-offs by Origination Year (in thousands) 2022 2021 2020 2019 2018 Prior Revolving Loans Total Year-To-Date Gross Charge-offs Real estate loans Commercial real estate Nonowner occupied $ — $ — $ — $ — $ — $ — $ — $ — Multi-family residential — — — — — — — — Land development and construction loans — — — — — — — — — — — — — — — — Single-family residential — — — — — 14 — 14 Owner occupied — — — — — — — — — — — — — 14 — 14 Commercial loans 2,523 — 4,429 541 — 486 — 7,979 Loans to financial institutions and acceptances — — — — — — — — Consumer loans and overdrafts 665 2,008 986 — — 1 — 3,660 Total Year-To-Date Gross Charge-Offs $ 3,188 $ 2,008 $ 5,415 $ 541 $ — $ 501 $ — $ 11,653 Collateral -Dependent Loans Loans are considered collateral-dependent when the repayment of the loan is expected to be provided by the sale or operation of the underlying collateral. The Company performs an individual evaluation as part of the process of calculating the allowance for credit losses related to these loans. The following tables present the amortized cost basis of collateral dependent loans related to borrowers experiencing financial difficulty by type of collateral as of September 30, 2023 and December 31, 2022: As of September 30, 2023 Collateral Type (in thousands) Commercial Real Estate Residential Real Estate Other Total Specific Reserves Real estate loans Commercial real estate Multi-family residential $ 23,344 — — $ 23,344 8,567 Single-family residential (1) — 797 — 797 — Owner occupied (2) 1,951 — — 1,951 — Commercial loans — — 3,620 3,620 — Total $ 25,295 $ 797 $ 3,620 $ 29,712 $ 8,567 _________________ (1) Weighted-average loan-to-value was approximately 66.8% at September 30, 2023. (2) Weighted-average loan-to-value was approximately 58.1% at September 30, 2023. As of December 31, 2022 Collateral Type (in thousands) Commercial Real Estate Residential Real Estate Other Total Specific Reserves Real estate loans Commercial real estate Nonowner occupied (1) $ 20,121 $ — $ — $ 20,121 $ — Owner occupied (2) 5,934 — — 5,934 — 26,055 — — 26,055 — Commercial loans (3) 1,998 — 6,401 8,399 5,179 Total $ 28,053 $ — $ 6,401 $ 34,454 $ 5,179 _________________ (1) Weighted-average loan-to-value was approximately 92.7% at December 31, 2022. (2) Weighted-average loan-to-value was approximately 62.7% at December 31, 2022. (3) Includes loans with no specific reserves totaling $0.5 million with a weighted-average loan-to-value of approximately 42.0% at December 31, 2022.

Time Deposits

Time Deposits	9 Months Ended
	Sep. 30, 2023
Time Deposits Disclosure [Abstract]
Time Deposits	Time Deposits Time deposits in denominations of $100,000 or more amounted to approximately $1.3 billion at September 30, 2023 and $928 million at December 31, 2022, respectively. Time deposits in denominations of more than $250,000 amounted to approximately $700 million and $486 million at September 30, 2023 and December 31, 2022, respectively. As of September 30, 2023 and December 31, 2022, brokered time deposits amounted to $723 million and $609 million, respectively. Large Time Deposits by Maturity The following table sets forth the maturities of our time deposits with individual balances equal to or greater than $100,000 as of September 30, 2023 and December 31, 2022: September 30, 2023 December 31, 2022 (in thousands, except percentages) Less than 3 months $ 394,866 30.1 % $ 140,292 15.1 % 3 to 6 months 151,991 11.6 % 148,137 16.0 % 6 to 12 months 598,763 45.7 % 497,436 53.6 % 1 to 3 years 157,740 12.0 % 135,663 14.6 % Over 3 years 8,215 0.6 % 6,889 0.7 % Total $ 1,311,575 100.0 % $ 928,417 100.0 %

Advances from the Federal Home

Advances from the Federal Home Loan Bank	9 Months Ended
	Sep. 30, 2023
Advance from Federal Home Loan Bank [Abstract]
Advances from the Federal Home Loan Bank	Advances from the Federal Home Loan Bank At September 30, 2023 and December 31, 2022, the Company had outstanding advances from the FHLB as follows: Outstanding Balance Year of Maturity Interest Interest At September 30, 2023 At December 31, 2022 (in thousands) 2023 0.61% to 4.84% Fixed — 304,821 2024 1.68% Fixed — 100,000 2025 1.40% to 3.07% Fixed — 451,665 2026 4.25% to 4.90% Fixed 110,000 — 2027 and after (1) 1.82% to 4.40% Fixed 485,000 50,000 $ 595,000 $ 906,486 _______________ (1) There were no callable advances from the FHLB as of September 30, 2023 and December 31, 2022.

Senior Notes

Senior Notes	9 Months Ended
	Sep. 30, 2023
Debt Disclosure [Abstract]
Senior Notes	Senior Notes On June 23, 2020, the Company completed a $60.0 million offering of senior notes with a coupon rate of 5.75% and a maturity date of June 30, 2025 (the “Senior Notes”). The net proceeds, after direct issuance costs of $1.6 million, totaled $58.4 million. As of September 30, 2023 and December 31, 2022, these Senior Notes amounted to $59.4 million and $59.2 million, respectively, n et of direct unamortized issuance costs of $0.6 million and $0.8 million, respectively. The Senior Notes are presented net of direct issuance costs in the consolidated financial statements. These costs have been deferred and are being amortized over the term of the Senior Notes of 5 years as an adjustment to yield. These Senior Notes are unsecured and unsubordinated, and rank equally with all of our existing and future unsecured and unsubordinated indebtedness. On March 9, 2022, the Company entered into a Subordinated Note Purchase Agreement (the “Purchase Agreement”) with Amerant Florida Bancorp Inc (“Amerant Florida” or the “Guarantor”), and qualified institutional buyers pursuant to which the Company sold and issued $30.0 million aggregate principal amount of its 4.25% Fixed-to-Floating Rate Subordinated Notes due March 15, 2032 (the “Subordinated Notes”). Net proceeds were $29.1 million, after estimated direct issuance costs of approximately $0.9 million. Unamortized direct issuance costs are deferred and amortized over the term of the Subordinated Notes of 10 years. As of September 30, 2023 and December 31, 2022, these Subordinated Notes amounted to $29.4 million and $29.3 million, respectively, net of direct unamortized issuance costs of $0.6 million and $0.7 million, respectively. The Subordinated Notes initially bear interest at a fixed rate of 4.25% per annum, from and including March 9, 2022, to but excluding March 15, 2027, with interest payable semi-annually in arrears. From and including March 15, 2027, to but excluding the stated maturity date or early redemption date, the interest rate will reset quarterly to an annual floating rate equal to the then-current benchmark rate, which will initially be the three-month Secured Overnight Financing Rate (“SOFR”) plus 251 basis points, with interest during such period payable quarterly in arrears. If the three-month SOFR cannot be determined during the applicable floating rate period, a different index will be determined and used in accordance with the terms of the Subordinated Notes. These Subordinated Notes are unsecured, subordinated obligations of the Company and rank junior in right of payment to all of the Company’s current and future senior indebtedness. Prior to March 15, 2027, the Company may redeem the Subordinated Notes, in whole but not in part, only under certain limited circumstances. On or after March 15, 2027, the Company may, at its option, redeem the Subordinated Notes, in whole or in part, on any interest payment date, subject to the receipt of any required regulatory approvals. The Subordinated Notes have been structured to qualify as Tier 2 capital of the Company for regulatory capital purposes, and rank equally in right of payment to all of our existing and future subordinated indebtedness. The Subordinated Notes were offered and sold by the Company in a private placement offering in reliance on exemptions from the registration requirements of the Securities Act of 1933, as amended (the “Securities Act”), pursuant to Section 4(a)(2) of the Securities Act and Rule 506(b) of Regulation D under the Securities Act. In connection with the sale and issuance of the Subordinated Notes, the Company entered into a registration rights agreement, pursuant to which the Company agreed to take certain actions to provide for the exchange of the Subordinated Notes for subordinated notes that are registered under the Securities Act and will have substantially the same terms.

Subordinated Notes

Subordinated Notes	9 Months Ended
	Sep. 30, 2023
Debt Disclosure [Abstract]
Subordinated Notes	Senior Notes On June 23, 2020, the Company completed a $60.0 million offering of senior notes with a coupon rate of 5.75% and a maturity date of June 30, 2025 (the “Senior Notes”). The net proceeds, after direct issuance costs of $1.6 million, totaled $58.4 million. As of September 30, 2023 and December 31, 2022, these Senior Notes amounted to $59.4 million and $59.2 million, respectively, n et of direct unamortized issuance costs of $0.6 million and $0.8 million, respectively. The Senior Notes are presented net of direct issuance costs in the consolidated financial statements. These costs have been deferred and are being amortized over the term of the Senior Notes of 5 years as an adjustment to yield. These Senior Notes are unsecured and unsubordinated, and rank equally with all of our existing and future unsecured and unsubordinated indebtedness. On March 9, 2022, the Company entered into a Subordinated Note Purchase Agreement (the “Purchase Agreement”) with Amerant Florida Bancorp Inc (“Amerant Florida” or the “Guarantor”), and qualified institutional buyers pursuant to which the Company sold and issued $30.0 million aggregate principal amount of its 4.25% Fixed-to-Floating Rate Subordinated Notes due March 15, 2032 (the “Subordinated Notes”). Net proceeds were $29.1 million, after estimated direct issuance costs of approximately $0.9 million. Unamortized direct issuance costs are deferred and amortized over the term of the Subordinated Notes of 10 years. As of September 30, 2023 and December 31, 2022, these Subordinated Notes amounted to $29.4 million and $29.3 million, respectively, net of direct unamortized issuance costs of $0.6 million and $0.7 million, respectively. The Subordinated Notes initially bear interest at a fixed rate of 4.25% per annum, from and including March 9, 2022, to but excluding March 15, 2027, with interest payable semi-annually in arrears. From and including March 15, 2027, to but excluding the stated maturity date or early redemption date, the interest rate will reset quarterly to an annual floating rate equal to the then-current benchmark rate, which will initially be the three-month Secured Overnight Financing Rate (“SOFR”) plus 251 basis points, with interest during such period payable quarterly in arrears. If the three-month SOFR cannot be determined during the applicable floating rate period, a different index will be determined and used in accordance with the terms of the Subordinated Notes. These Subordinated Notes are unsecured, subordinated obligations of the Company and rank junior in right of payment to all of the Company’s current and future senior indebtedness. Prior to March 15, 2027, the Company may redeem the Subordinated Notes, in whole but not in part, only under certain limited circumstances. On or after March 15, 2027, the Company may, at its option, redeem the Subordinated Notes, in whole or in part, on any interest payment date, subject to the receipt of any required regulatory approvals. The Subordinated Notes have been structured to qualify as Tier 2 capital of the Company for regulatory capital purposes, and rank equally in right of payment to all of our existing and future subordinated indebtedness. The Subordinated Notes were offered and sold by the Company in a private placement offering in reliance on exemptions from the registration requirements of the Securities Act of 1933, as amended (the “Securities Act”), pursuant to Section 4(a)(2) of the Securities Act and Rule 506(b) of Regulation D under the Securities Act. In connection with the sale and issuance of the Subordinated Notes, the Company entered into a registration rights agreement, pursuant to which the Company agreed to take certain actions to provide for the exchange of the Subordinated Notes for subordinated notes that are registered under the Securities Act and will have substantially the same terms.

Junior Subordinated Debentures

Junior Subordinated Debentures Held by Trust Subsidiaries	9 Months Ended
	Sep. 30, 2023
Debt Disclosure [Abstract]
Junior Subordinated Debentures Held by Trust Subsidiaries	Junior Subordinated Debentures Held by Trust Subsidiaries The following tables provide information on the outstanding Trust Preferred Securities issued by, and the junior subordinated debentures issued to, each of the statutory trust subsidiaries as of September 30, 2023 and December 31, 2022: September 30, 2023 (in thousands) Amount of Principal Year of Annual Rate of Trust Year of Commercebank Capital Trust VI $ 9,250 $ 9,537 2002 3-M SOFR + 3.61% 2033 Commercebank Capital Trust VII 8,000 8,248 2003 3-M SOFR + 3.51% 2033 Commercebank Capital Trust VIII 5,000 5,155 2004 3-M SOFR + 3.11% 2034 Commercebank Capital Trust IX 25,000 25,774 2006 3-M SOFR + 2.01% 2038 Commercebank Capital Trust X 15,000 15,464 2006 3-M SOFR + 2.04% 2036 $ 62,250 $ 64,178 December 31, 2022 (in thousands) Amount of Principal Year of Annual Rate of Trust Year of Commercebank Capital Trust VI $ 9,250 $ 9,537 2002 3-M LIBOR + 3.35% 2033 Commercebank Capital Trust VII 8,000 8,248 2003 3-M LIBOR + 3.25% 2033 Commercebank Capital Trust VIII 5,000 5,155 2004 3-M LIBOR + 2.85% 2034 Commercebank Capital Trust IX 25,000 25,774 2006 3-M LIBOR + 1.75% 2038 Commercebank Capital Trust X 15,000 15,464 2006 3-M LIBOR + 1.78% 2036 $ 62,250 $ 64,178 In the third quarter of 2023, SOFR replaced LIBOR as the floating rate for the Company’s junior subordinated debentures. See the 2022 Form 10-K for more details on the LIBOR cessation and its impact on our financial instruments.

Derivative Instruments

Derivative Instruments	9 Months Ended
	Sep. 30, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	Derivative Instruments At September 30, 2023 and December 31, 2022, the fair values of the Company’s derivative instruments were as follows: September 30, 2023 December 31, 2022 (in thousands) Other Assets Other Liabilities Other Assets Other Liabilities Interest rate swaps designated as cash flow hedges $ 1,199 $ 919 $ 167 $ 45 Interest rate swaps not designated as hedging instruments: Customers 62 76,173 603 66,439 Third party broker 76,173 62 66,439 603 76,235 76,235 67,042 67,042 Interest rate caps not designated as hedging instruments: Customers — 8,374 — 10,002 Third party broker 8,715 — 10,207 — 8,715 8,374 10,207 10,002 Mortgage derivatives not designated as hedging instruments: Interest rate lock commitments 708 — 727 — Forward contracts 287 90 107 71 995 90 834 71 $ 87,144 $ 85,618 $ 78,250 $ 77,160 Derivatives Designated as Hedging Instruments Interest Rate Swaps On Debt Instruments The Company enters into interest rate swap contracts on debt instruments which the Company designates and qualifies as cash flow hedges. These interest rate swaps are designed as cash flow hedges to manage the exposure that arises from differences in the amount of the Company’s known or expected cash receipts and the known or expected cash payments on designated debt instruments. These interest rate swap contracts involve the Company’s payment of fixed-rate amounts in exchange for the Company receiving variable-rate payments over the life of the contracts without exchange of the underlying notional amount. At September 30, 2023 and December 31, 2022, the Company had five interest rate swap contracts on debt instruments with notional amounts totaling $64.2 million maturing in the third and fourth quarters of 2025. These contracts were designated as cash flow hedges to manage the exposure of variable rate interest payments on all of the Company’s outstanding variable-rate junior subordinated debentures with principal amounts at September 30, 2023 and December 31, 2022 totaling $64.2 million. The Company expects these interest rate swaps to be highly effective in offsetting the effects of changes in interest rates on cash flows associated with the Company’s variable-rate junior subordinated debentures. The Company recognized unrealized gains of $0.2 million and $8 thousand in the three months ended September 30, 2023 and 2022, respectively, and unrealized gains of $0.3 million and unrealized losses of $0.3 million in the nine months ended September 30, 2023 and 2022, respectively, related to these interest rate swap contracts. These unrealized losses were included as part of interest expense on junior subordinated debentures in the Company’s consolidated statement of operations and comprehensive (loss) income. As of September 30, 2023, the estimated net unrealized gains in accumulated other comprehensive income expected to be reclassified into expense in the next twelve months amounted to $0.3 million. In 2019, the Company terminated 16 interest rate swaps on debt instruments that had been designated as cash flow hedges of variable rate interest payments on the outstanding and expected rollover of variable-rate advances from the FHLB. The Company is recognizing the contracts’ cumulative net unrealized gains of $8.9 million in earnings over the remaining original life of the terminated interest rate swaps ranging between one month and seven years. The Company recognized approximately $0.3 million in each of the three months ended September 30, 2023 and 2022 and $1.0 million in each of the nine months ended September 30, 2023 and 2022 as a reduction of interest expense on FHLB advances as a result of this amortization. Interest Rate Swaps On Loans In the second quarter of 2023, the Company entered into an interest rate swap contract with a notional amount of $50.0 million, and maturity in the second quarter of 2025. The Company designated this interest rate swap as a cash flow hedge to manage interest rate risk exposure on variable rate interest receipts on the first $50 million principal balance of a pool of loans. This interest rate swap contract involves the Company’s payment of variable-rate amounts in exchange for the Company receiving fixed-rate payments over the life of the contract without exchange of the underlying notional amount. In the three and nine month periods ended September 30, 2023, the Company recognized unrealized losses of $0.2 million related to this interest rate swap contract. These unrealized losses were included as part of interest income on loans in the Company’s consolidated statement of operations and comprehensive (loss) income. As of September 30, 2023, the estimated net unrealized losses in accumulated other comprehensive (loss) income expected to be reclassified into interest income in the next twelve months amounted to $0.7 million. Derivatives Not Designated as Hedging Instruments Interest Rate Swaps At September 30, 2023 and December 31, 2022, the Company had 143 interest rate swap contracts with customers, respectively, with total notional amounts of $969.4 million and $925.4 million, respectively. These instruments involve the Company’s payment of variable-rate amounts to customers in exchange for the Company receiving fixed-rate payments from customers over the life of the contracts without exchange of the underlying notional amount. In addition, as of September 30, 2023 and December 31, 2022, the Company had interest rate swap mirror contracts with third party brokers with similar terms. The Company enters into swap participation agreements with other financial institutions to manage the credit risk exposure on certain interest rate swaps with customers. Under these agreements, the Company, as the beneficiary or guarantor, will receive or make payments from/to the counterparty if the borrower defaults on the related interest rate swap contract. As of September 30, 2023 and December 31, 2022, the Company had four swap participation agreements with total notional amounts of approximately $72.6 million and $74.0 million, respectively. The notional amount of these agreements is based on the Company’s pro-rata share of the related interest rate swap contracts. As of September 30, 2023 and December 31, 2022, the fair value of swap participation agreements was not significant. Interest Rate Caps At September 30, 2023 and December 31, 2022, the Company had 15 and 19 interest rate cap contracts with customers with total notional amounts of $353.4 million and $448.8 million, respectively. These instruments involve the Company making payments if an interest rate exceeds the agreed strike price. In addition, at September 30, 2023 and December 31, 2022, the Company had 14 and 16 interest rate cap mirror contracts, respectively, with a third party broker with total notional amounts of $332.4 million and $371.9 million, respectively. In April 2022, the Company entered into 4 interest rate cap contracts with various third-party brokers with total notional amounts of $140.0 million. These interest rate caps initially served to partially offset changes in the estimated fair value of interest rate cap contracts with customers at December 31, 2022. At September 30, 2023 and December 31, 2022, there were 1 and 4 interest rate cap contracts, respectively, with total notional amounts of $35.0 million and $140.0 million, respectively, in connection with this transaction. Mortgage Derivatives The Company enters into interest rate lock commitments and forward sale contracts to manage the risk exposure in the mortgage banking area. At September 30, 2023 and December 31, 2022, the Company had interest rate lock commitments with notional amounts of $92.4 million and $77.0 million, respectively, and forward contracts with notional amounts of $36.5 million and $17.0 million, respectively. Interest rate lock commitments guarantee the funding of residential mortgage loans originated for sale, at specified interest rates and times in the future. Forward sale contracts consist of commitments to deliver mortgage loans, originated and/or purchased, in the secondary market at a future date. The change in the fair value of these instruments was an unrealized gain of $0.1 million in each of the three months ended September 30, 2023 and 2022, and an unrealized gain of $0.1 million and $0.3 million in the nine months ended September 30, 2023 and 2022, respectively. These amounts were recorded as part of other noninterest income in the consolidated statements of operations and comprehensive (loss) income. Credit Risk-Related Contingent Features As of September 30, 2023 and December 31, 2022, the aggregate fair value of interest rate swaps in a liability position was $77.2 million and $67.1 million, respectively. Some agreements may require pledging of securities when the valuation of a interest rate swap falls below a certain amount. There were no securities pledged as collateral for interest rate swaps in a liability position at September 30, 2023. At December 31, 2022, there were $0.5 million in debt securities held for sale pledged as collateral to secure interest rate swaps designated as cash flow hedges, with a fair value of $45 thousand. In addition, as of September 30, 2023 and December 31, 2022, the Company had cash held as collateral of $51.2 million and $41.6 million, respectively, for derivatives margin calls. See Note 2 “Interest Earning Deposits with Banks, Other Short-Term Investments and Restricted Cash” for additional information about cash held as collateral. As of September 30, 2023, there were no collateral requirements related to interest rate swaps with third-party brokers not designated as hedging instruments.

Leases

Leases	9 Months Ended
	Sep. 30, 2023
Leases [Abstract]
Leases	Leases The Company leases certain premises and equipment under operating leases. The leases have remaining lease terms ranging from less than one year to 42 years, some of which have renewal options reasonably certain to be exercised and, therefore, have been reflected in the total lease term and used for the calculation of minimum payments required. The Company had variable lease payments of $0.6 million and $0.4 million during the three months ended September 30, 2023 and 2022, respectively, and $1.7 million and $1.3 million during the nine months ended September 30, 2023 and 2022, respectively, which include mostly common area maintenance and taxes, included in occupancy and equipment on the consolidated statements of income. In addition, the Company recorded right of use (“ROU”) asset impairment charges of $1.1 million and $1.6 million in the nine months ended September 30, 2023 and 2022, respectively. ROU asset impairment charges in the first nine months of 2023 were in connection with the closure of a branch in Houston, Texas in 2023, and with the decision to close another branch in Miami, Florida in 2023 (First nine months of 2022 - in connection with the closure of a branch in Pembroke Pines, Florida in 2022). These impairments were recorded as occupancy and equipment expense on the consolidated statements of operations and comprehensive (loss) income. Lease costs for the three and nine month periods ended September 30, 2023 and 2022 were as follows: (in thousands) Three months ended September 30, Nine months ended September 30, 2023 2022 2023 2022 Lease cost Operating lease cost $ 5,248 $ 4,278 $ 13,866 $ 13,008 Short-term lease cost 24 18 24 62 Variable lease cost 588 414 1,675 1,304 Sublease income (1) (857) (527) (2,582) (2,164) Total lease cost, net $ 5,003 $ 4,183 $ 12,983 $ 12,210 _______________ (1) Primarily in connection with the subleasing of portions of the Company’s headquarters building and, to a lesser extent, the sublease of the New York office space. As of September 30, 2023 and December 31, 2022, the Company had an ROU asset of $116.8 million and $140.0 million and total operating lease liability of $124.1 million and $145.3 million, respectively. As of September 30, 2023 and December 31, 2022, the Company had a short-term lease liability of $3.4 million and $5.2 million, respectively, included as part of other liabilities in the consolidated balance sheet. The following table provides supplemental information to leases as of and for the three and nine month periods ended September 30, 2023 and 2022: Three Months Ended September 30, Nine Months Ended Ended September 30, 2023 2022 2023 2022 (in thousands, except weighted average data) Cash paid for amounts included in the measurement of operating lease liabilities 4,267 3,499 11,908 10,811 Weighted average remaining lease term for operating leases 17.0 years 18.3 years 17.0 years 18.3 years Weighted average discount rate for operating leases 9.66 % 5.94 % 9.66 % 5.94 % The following table presents a maturity analysis and reconciliation of the undiscounted cash flows to the total operating lease liabilities as of September 30, 2023 for the remaining 3 months of 2023 and thereafter: (in thousands) For the remaining three months of 2023 $ 3,585 2024 14,579 2025 14,659 2026 14,905 2027 15,216 Thereafter 199,817 Total minimum payments required 262,761 Less: implied interest (138,689) Total lease obligations $ 124,072 The Company provides equipment financing through a variety of loan and lease structures, including direct or sale type finance leases and operating leases. As of September 30, 2023 and December 31, 2022, there were $2.5 million and $13.6 million, respectively, in direct or sale type finance leases included as part of loans held for investment, gross in the Company’s consolidated balance sheet, and included as part of commercial loans in our loan portfolio held for investment. As of September 30, 2023, there were $3.1 million in operating leases included as part of premises and equipment, net of accumulated depreciation, in the Company’s consolidated balance sheet.

Stock-based Incentive Compensat

Stock-based Incentive Compensation Plan	9 Months Ended
	Sep. 30, 2023
Share-Based Payment Arrangement [Abstract]
Stock-based Incentive Compensation Plan	Stock-based Incentive Compensation Plan The Company sponsors the 2018 Equity and Incentive Compensation Plan (the “2018 Equity Plan”). See Note 14 to the Company’s audited consolidated financial statements in the 2022 Form 10-K for more information on the 2018 Equity Plan, the Long-Term Incentive (LTI) Plan and stock-based compensation awards for the year ended December 31, 2022, including restricted stock awards (“RSAs”), restricted stock units (“RSUs”) and performance stock units (“PSUs”). Restricted Stock Awards The following table shows the activity of restricted stock awards during the nine months ended September 30, 2023: Number of restricted shares Weighted-average grant date fair value Non-vested shares, beginning of year 295,076 $ 25.83 Granted 10,440 27.42 Vested (103,118) 24.22 Forfeited (36,691) 23.87 Non-vested shares at September 30, 2023 165,707 $ 27.37 In the first nine months of 2023, the Company granted an aggregate of 10,440 RSAs to various employees, under the LTI Plan. The fair value of the RSAs granted was based on the market price of the shares of the Company’s Class A common stock at the grant date which averaged $27.42 per RSA. These RSAs will vest in three three The Company recorded compensation expense related to the RSAs of $0.3 million and $0.9 million during the three months ended September 30, 2023 and 2022, respectively, and $1.8 million and $2.4 million during the nine months September 30, 2023 and 2022, respectively. The total unamortized deferred compensation expense of $1.5 million for all unvested restricted stock outstanding at September 30, 2023 will be recognized over a weighted average period of 1.2 years. Restricted Stock Units and Performance Stock Units The following table shows the activity of RSUs and PSUs during the nine months ended September 30, 2023: Stock-settled RSUs Stock-settled PSUs Number of RSUs Weighted-average grant date fair value Number of PSUs Weighted-average grant date fair value Non-vested, beginning of year 123,970 $ 22.83 137,199 $ 17.43 Granted 231,976 24.18 53,420 25.09 Vested (64,820) 22.71 (10,442) 19.00 Forfeited (12,081) 27.08 (2,867) 33.63 Non-vested, at September 30, 2023 279,045 $ 23.80 177,310 $ 19.38 On February 16, 2023, the Company granted an aggregate of 113,297 RSUs to various executive officers under the LTI Plan. The fair value of the RSUs granted was based on the market price of the shares of the Company’s Class A common stock at the grant date which was $28.93 per RSU. These RSUs will vest in three three On February 16, 2023, the Company granted a target of 38,049 PSUs to various executive officers under the LTI Plan. These PSUs generally vest at the end of a three-year performance period, but only result in the issuance of shares of Class A common stock if the Company achieves a performance target. The Company used an option pricing model to estimate fair value of the PSUs granted which was $29.11 per PSU. In the second quarter of 2023, the Company granted an aggregate of 65,759 RSUs to various executive officers and employees. The fair values of the RSUs granted were based on the market price of the shares of the Company’s Class A common stock at the grant date. The weighted average fair value of these RSUs was $19.04 per RSU. These RSUs will vest in three three In the second quarter of 2023, the Company granted a target of 15,371 PSUs to various executive officers under the LTI Plan. These PSUs generally vest at the end of a three-year performance period, but only result in the issuance of shares of Class A common stock if the Company achieves a performance target. The Company used an option pricing model to estimate fair value of the PSUs granted. The weighted average fair value of the PSUs granted was $15.60 per PSU. In the third quarter of 2023, the Company granted an aggregate of 24,000 RSUs to various executive officers and employees. Included in those 24,000 shares are 16,111 shares that will vest as follows: 40% will vest in two three three On June 7, 2023, the Company granted 28,920 stock-settled RSUs to its independent directors. The fair value of the RSUs granted was based on the market price of the shares of the Company’s Class A common stock at the grant date which was $20.74 per RSU. These RSUs will vest within one year. The Company recorded compensation expense related to RSUs and PSUs of $1.3 million and $0.7 million during the three months ended September 30, 2023 and 2022, respectively, and $3.2 million and $1.7 million during the nine months September 30, 2023 and 2022, respectively. The total unamortized deferred compensation expense of $5.6 million for all unvested stock-settled RSUs and PSUs outstanding at September 30, 2023 will be recognized over a weighted average period of 1.9 years.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2023
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes 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 consolidated pre-tax income, permanent tax differences and statutory tax rates. Under this method, the tax effect of certain items that do not meet the definition of ordinary income or expense are computed and recognized as discrete items when they occur. The effective combined federal and state tax rates for the nine months ended September 30, 2023 and 2022 were 21.71% and 21.50%, respectively. Effective tax rates differ from the statutory rates mainly due to the impact of forecasted permanent non-taxable interest and other income, forecasted permanent non-deductible expenses, and the effect of corporate state taxes.

Accumulated Other Comprehensive

Accumulated Other Comprehensive (loss) Income (“AOCL/AOCI”)	9 Months Ended
	Sep. 30, 2023
Equity [Abstract]
Accumulated Other Comprehensive (loss) Income (“AOCL/AOCI”)	Accumulated Other Comprehensive (loss) Income (“AOCL/AOCI”): The components of AOCL/AOCI are summarized as follows using applicable blended average federal and state tax rates for each period: September 30, 2023 December 31, 2022 (in thousands) Before Tax Tax Net of Tax Before Tax Tax Net of Tax Net unrealized holding losses on debt securities available for sale $ (144,634) $ 36,907 $ (107,727) $ (111,957) $ 28,605 $ (83,352) Net unrealized holding gains on interest rate swaps designated as cash flow hedges 2,818 (725) 2,093 3,659 (942) 2,717 Total (AOCL) AOCI $ (141,816) $ 36,182 $ (105,634) $ (108,298) $ 27,663 $ (80,635) The components of other comprehensive loss for the periods presented are summarized as follows: Three Months Ended September 30, 2023 2022 (in thousands) Before Tax Tax Net of Tax Before Tax Tax Net of Tax Net unrealized holding losses on debt securities available for sale: Change in fair value arising during the period $ (25,007) $ 6,438 $ (18,569) $ (47,015) $ 12,056 $ (34,959) Reclassification adjustment for net losses included in net income — — — (22) 5 (17) (25,007) 6,438 (18,569) (47,037) 12,061 (34,976) Net unrealized holding losses (gains) on interest rate swaps designated as cash flow hedges: Change in fair value arising during the period 174 (45) 129 (22) 6 (16) Reclassification adjustment for net interest income included in net income (360) 92 (268) (345) 88 (257) (186) 47 (139) (367) 94 (273) Total other comprehensive loss $ (25,193) $ 6,485 $ (18,708) $ (47,404) $ 12,155 $ (35,249) Nine Months Ended September 30, 2023 2022 (in thousands) Before Tax Tax Net of Tax Before Tax Tax Net of Tax Net unrealized holding losses on debt securities available for sale: Change in fair value arising during the period $ (34,775) $ 8,836 $ (25,939) $ (135,554) $ 34,516 $ (101,038) Reclassification adjustment for net losses (gains) included in net income 2,098 (534) 1,564 (71) 18 (53) (32,677) 8,302 (24,375) (135,625) 34,534 (101,091) Net unrealized holding losses on interest rate swaps designated as cash flow hedges: Change in fair value arising during the period 288 (71) 217 295 (133) 162 Reclassification adjustment for net interest income included in net income (1,129) 288 (841) (667) 171 (496) (841) 217 (624) (372) 38 (334) Total other comprehensive loss $ (33,518) $ 8,519 $ (24,999) $ (135,997) $ 34,572 $ (101,425)

Contingencies

Contingencies	9 Months Ended
	Sep. 30, 2023
Commitments and Contingencies Disclosure [Abstract]
Contingencies	Contingencies From time to time the Company and its subsidiaries may be exposed to loss contingencies. In the ordinary, course of business, those contingencies may include, known but unasserted claims, and legal/regulatory inquiries or examinations. The Company records these loss contingencies as a liability when the likehood of loss is probable and an amount or range of loss can be reasonably estimated. In the opinion of management, the Company maintains a liability that is in an estimated amount sufficient to cover said loss contingencies, if any, at the reporting dates. Financial instruments whose contract amount represents off-balance sheet credit risk at September 30, 2023 are generally short-term and are as follows: (in thousands) Approximate Commitments to extend credit $ 1,238,080 Standby letters of credit 32,300 Commercial letters of credit 64 $ 1,270,444 The following table summarizes the changes in the allowance for credit losses for off-balance sheet credit risk exposures for the three and nine month periods ended September 30, 2023 and 2022: (in thousands) Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 Balances at beginning of the period $ 2,002 $ 1,702 $ 1,702 $ 1,702 Provision for credit losses - off balance sheet exposures 600 — 900 — Balances at end of period $ 2,602 $ 1,702 $ 2,602 $ 1,702 Beginning in the three months ended September 30, 2023, the provision for credit losses for off-balance sheet exposures is included as part of provision for (reversal of) credit losses in the Company’s consolidated statements of comprehensive income (loss). Prior to that period, the provision for credit losses for off-balance sheet exposures was included as part of other operating expenses in the Company’s consolidated statements of comprehensive income (loss).

Fair Value Measurements

Fair Value Measurements	9 Months Ended
	Sep. 30, 2023
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements Assets and liabilities measured at fair value on a recurring basis are summarized below: September 30, 2023 (in thousands) Quoted Third-Party Internal Total Assets Cash and cash equivalents Other short-term investments $ — $ 6,024 $ — $ 6,024 Securities Debt securities available for sale U.S. government-sponsored enterprise debt securities — 414,635 — 414,635 Corporate debt securities — 252,578 — 252,578 U.S. government agency debt securities — 355,987 — 355,987 Collateralized loan obligations — 5,005 — 5,005 Municipal bonds — 1,640 — 1,640 U.S treasury securities — 3,952 — 3,952 — 1,033,797 — 1,033,797 Equity securities with readily determinable fair values not held for trading 2,438 — — 2,438 2,438 1,033,797 — 1,036,235 Mortgage loans held for sale (at fair value) — 25,952 — 25,952 Bank owned life insurance — 232,736 — 232,736 Other assets Mortgage servicing rights (MSRs) — — 1,306 1,306 Derivative instruments — 87,144 — 87,144 $ 2,438 $ 1,385,653 $ 1,306 $ 1,389,397 Liabilities Other liabilities Derivative instruments $ — $ 85,618 $ — $ 85,618 December 31, 2022 (in thousands) Quoted Third-Party Internal Total Assets Securities Debt securities available for sale U.S. government-sponsored enterprise debt securities $ — $ 437,674 $ — $ 437,674 Corporate debt securities — 280,700 — 280,700 U.S. government agency debt securities — 330,821 — 330,821 Collateralized loan obligations — 4,774 — 4,774 U.S treasury securities — 1,996 — 1,996 Municipal bonds — 1,656 — 1,656 — 1,057,621 — 1,057,621 Equity securities with readily determinable fair values not held for trading 11,383 — — 11,383 11,383 1,057,621 — 1,069,004 Mortgage loans held for sale (at fair value) — 62,438 — 62,438 Bank owned life insurance — 228,412 — 228,412 Other assets Mortgage servicing rights (MSRs) — — 1,307 1,307 Derivative instruments — 78,250 — 78,250 $ 11,383 $ 1,426,721 $ 1,307 $ 1,439,411 Liabilities Other liabilities Derivative instruments $ — $ 77,160 $ — $ 77,160 Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis The following tables present the major categories of assets measured at fair value on a non-recurring basis at September 30, 2023 and December 31, 2022: September 30, 2023 (in thousands) Carrying Amount Quoted Significant Significant Total Write Downs Description Loans held for sale, at lower of fair value or cost $ 43,257 $ — $ — $ 43,257 $ 5,562 Loans held for investment measured for impairments using the fair value of the collateral (1) 24,146 — — 24,146 4,371 Other Real Estate Owned (2) 20,181 — — 20,181 — $ 87,584 $ — $ — $ 87,584 $ 9,933 _______________ (1) Include loans with specific reserves of $8.6 million and total write downs of $4.4 million at September 30, 2023. (2) Consists of commercial real estate property. December 31, 2022 (in thousands) Carrying Amount Quoted Significant Significant Total Write Downs Description Loans held for investment measured for impairments using the fair value of the collateral (1) $ 30,158 $ — $ — $ 30,158 $ 3,851 _______________ (1) Include loans with specific reserves of $5.2 million and total write downs of $3.9 million at December 31, 2022. The following table presents the significant unobservable inputs (Level 3) used in the valuation of assets measured at fair value on a nonrecurring basis. Financial Instrument Unobservable Inputs Valuation Methods Discount Range Typical Discount Collateral dependent loans Discount to fair value Appraisal value, as adjusted 0-30% 6-7% Inventory 0-100% 30-50% Accounts receivables 0-100% 20-30% Equipment 0-100% 20-30% Other Real Estate Owned Discount to fair value Appraisal value, as adjusted N/A 6-7% There were no other significant assets or liabilities measured at fair value on a nonrecurring basis at September 30, 2023 and December 31, 2022. Loans Held for Sale, at Lower of Fair Value or Cost For loans held for sale that are carried at the lower of fair value or cost, the fair value is generally based on quoted market prices of similar loans and is considered to be Level 2. Collateral Dependent Loans Measured For Expected Credit Losses The carrying amount of collateral dependent loans is typically based on the fair value of the underlying collateral. The Company primarily uses third party appraisals to assist in measuring expected credit losses on collateral dependent loans. The Company also uses third party appraisal reviewers for loans with an outstanding balance of $1 million and above. These appraisals generally use the market or income approach valuation technique and use market observable data to formulate an opinion of the fair value of the loan’s collateral. However, the appraiser uses professional judgment in determining the fair value of the collateral or properties and may also adjust these values for changes in market conditions subsequent to the appraisal date. When current appraisals are not available for certain loans, the Company uses judgment on market conditions to adjust the most current appraisal. The sales prices may reflect prices of sales contracts not closed and the amount of time required to sell out the real estate project may be derived from current appraisals of similar projects. As a consequence, the fair value of the collateral is considered a Level 3 valuation. OREO and Repossessed Assets The Company values OREO at the lower of cost or fair value of the property, less cost to sell. The fair value of the property is generally based upon recent appraisal values of the property, less cost to sell. The Company primarily uses third party appraisals to assist in measuring the valuation of OREO. Period revaluations are classified as level 3 as the assumptions used may not be observable. The fair value of non-real estate repossessed assets is provided by a third party based on their assumptions and quoted market prices for similar assets, when available. At March 31, 2023, the Company had other repossessed assets with a carrying value of $6.4 million. In the nine months ended September 30, 2023, the Company sold these repossessed assets and recognized a loss on sale of $2.6 million which is included in the result of operations for that period. The Company had no OREO or repossessed asset balances as of December 31, 2022. Fair Value of Financial Instruments The estimated fair value of financial instruments where fair value differs from carrying value are as follows: September 30, 2023 December 31, 2022 (in thousands) Carrying Estimated Carrying Estimated Financial assets: Debt securities held to maturity $ 230,254 $ 195,165 $ 242,101 $ 217,609 Loans 3,319,421 3,145,042 3,314,553 3,181,696 Financial liabilities: Time deposits 1,579,458 1,569,852 1,119,510 1,099,294 Advances from the FHLB 595,000 588,604 906,486 873,852 Senior notes 59,447 56,293 59,210 58,755 Subordinated notes 29,412 28,481 29,284 28,481 Junior subordinated debentures 64,178 63,237 64,178 64,182

Earnings Per Share

Earnings Per Share	9 Months Ended
	Sep. 30, 2023
Earnings Per Share [Abstract]
Earnings Per Share	Earnings Per Share The following table shows the calculation of basic and diluted earnings per share: Three Months Ended September 30, Nine Months Ended September 30, (in thousands, except share data and per share amounts) 2023 2022 (1) 2023 2022 (1) Numerator: Net income before attribution of noncontrolling interest (1) $ 21,741 $ 17,490 $ 48,729 $ 40,145 Noncontrolling interest (378) (44) (884) (1,192) Net income attributable to Amerant Bancorp Inc. (1) $ 22,119 $ 17,534 $ 49,613 $ 41,337 Net income available to common stockholders (1) $ 22,119 $ 17,534 $ 49,613 $ 41,337 Denominator: Basic weighted average shares outstanding 33,489,560 33,476,418 33,537,759 33,985,856 Dilutive effect of share-based compensation awards 207,060 270,460 218,756 267,706 Diluted weighted average shares outstanding 33,696,620 33,746,878 33,756,515 34,253,562 Basic earnings per common share (1) $ 0.66 $ 0.52 $ 1.48 $ 1.22 Diluted earnings per common share (1) $ 0.66 $ 0.52 $ 1.47 $ 1.21 _______________ (1) Amounts reflect the impact of the adoption of CECL effective as of January 1, 2022. See Note 1 “Business, Basis of Presentation and Summary of Significant Accounting Policies” for additional information. As of September 30, 2023 and 2022, potential dilutive instruments consisted of unvested shares of restricted stock, RSUs and PSUs totaling 577,511 and 532,867, respectively. In the three and nine month periods ended September 30, 2023 and 2022, potential dilutive instruments were included in the diluted earnings per share computation because, when the unamortized deferred compensation cost related to these shares was divided by the average market price per share in those periods, fewer shares would have been purchased than restricted shares assumed issued. Therefore, in those periods, such awards resulted in higher diluted weighted average shares outstanding than basic weighted average shares outstanding, and had a dilutive effect on per share earnings.

Pay vs Performance Disclosure

Pay vs Performance Disclosure - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Pay vs Performance Disclosure
Net income attributable to Amerant Bancorp Inc.	$ 22,119	$ 7,308	$ 20,186	$ 17,534	$ 8,424	$ 15,379	$ 49,613	$ 41,337

Insider Trading Arrangements

Insider Trading Arrangements	3 Months Ended
	Sep. 30, 2023
Trading Arrangements, by Individual
Rule 10b5-1 Arrangement Adopted	false
Non-Rule 10b5-1 Arrangement Adopted	false
Rule 10b5-1 Arrangement Terminated	false
Non-Rule 10b5-1 Arrangement Terminated	false

Business, Basis of Presentati_2

Business, Basis of Presentation and Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2023
Accounting Policies [Abstract]
Restructuring costs	Restructuring costsThe Company continues to work at optimizing its operating structure to best support its business activities.
Significant Accounting Policies	Significant Accounting Policies The accompanying unaudited interim consolidated financial statements have been prepared in accordance with generally accepted accounting principles in the United States of America (“GAAP”) for interim financial information and the instructions to Form 10-Q and Article 10 of Regulation S-X. Accordingly, they do not include all of the information and footnotes required for a fair statement of financial position, results of operations and cash flows in conformity with GAAP. These unaudited interim consolidated financial statements reflect all adjustments that are, in the opinion of management, necessary for a fair statement of the results for the interim periods presented. These adjustments are of a normal, recurring nature. Interim period operating results may not be indicative of the operating results for a full year or any other period. These unaudited interim consolidated financial statements should be read in conjunction with the Company’s audited consolidated financial statements as of December 31, 2022 and 2021 and for each of the three years in the period ended December 31, 2022 and the accompanying footnote disclosures for the Company, which are included in the 2022 Form 10-K. For a complete summary of our significant accounting policies, see
Estimates	EstimatesThe preparation of financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting periods. Significant estimates made by management include: (i) the determination of the allowance for credit losses; (ii) the fair values of loans held for sale and securities, the value assigned to goodwill during periodic goodwill impairment tests, and the fair value of other real estate owned (“OREO”); (iii) the cash surrender value of bank owned life insurance; and (iv) the determination of whether the amount of deferred tax assets will more likely than not be realized. Management believes that these estimates are appropriate. Actual results could differ from these estimates.
Reclassifications	Reclassifications In the three and nine month periods ended September 30, 2023, loan-level derivative expenses are presented separately in the Company’s consolidated statement of operations and comprehensive (loss) income. Previously, these expenses were presented as a component of professional and other services fees in the Company’s consolidated statement of operations and comprehensive (loss) income. In the three and nine months ended September 30, 2023, OREO and repossessed assets, net expense is presented separately in the Company’s consolidated statement of operations and comprehensive (loss) income. OREO and repossessed assets expense includes expenses and revenue (rental income) from the operation of foreclosed property/assets as well as fair value adjustments and gains/losses from the sale of OREO and repossessed assets. In 2022, while OREO valuation expense was presented separately, all other OREO-related expenses were presented as part of other operating expenses in the Company’s consolidated statement of operations and comprehensive (loss) income. We had no other repossessed assets in 2022.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements Issued and Adopted Guidance on Troubled Debt Restructurings In March 2022, the Financial Accounting Standards Board (“FASB”) issued guidance that eliminates the recognition and measurement guidance on troubled debt restructurings, or TDR, for creditors, and aligns it with existing guidance to determine whether a loan modification results in a new loan or a continuation of an existing loan. The guidance also requires enhanced disclosures about certain loan modifications by creditors when a borrower is experiencing financial difficulty. The amended guidance is effective in periods beginning after December 15, 2022 using either a prospective or modified retrospective transition approach. Early adoption was permitted if an entity had already adopted the guidance on accounting for credit losses on financial instruments (“CECL”). The Company adopted this guidance on TDR as of January 1, 2023, and determined that its adoption had no material impact to the Company’s consolidated financial statements. Guidance on Accounting for Credit Losses on Financial Instruments In 2022, the Company adopted ASC Topic 326 on CECL. The Company adopted the CECL guidance as of the beginning of the reporting period of adoption, January 1, 2022, using a modified retrospective approach for all its financial assets measured at amortized cost and off-balance sheet credit exposures. For more details on the adoption of CECL, see the 2022 Form 10-K. The following table reflects the impact of adopting CECL on the allowance for credit losses (“ACL”) and other line items on the Company’s consolidated financial statements as of and for the three and nine month periods ended September 30, 2022: Consolidated Balance Sheets As of September 30, 2022 (in thousands) As Reported As Recast (1) Changes Assets Allowance for credit losses $ 53,711 $ 76,473 $ 22,762 Deferred tax assets, net 45,791 51,644 5,853 Liabilities Accounts payable, accrued liabilities and other liabilities 181,693 181,863 170 Stockholders’ Equity Retained earnings 588,495 571,416 (17,079) Consolidated Statements of Operations Three Months Ended September 30, 2022 Nine Months Ended September 30, 2022 (in thousands, except per share amounts) As Reported As Recast (1) Changes As Reported As Recast (1) Changes Total interest income $ 89,137 $ 89,137 $ — $ 225,402 $ 225,402 $ — Total interest expense 19,240 19,240 — 40,915 40,915 — Net interest income 69,897 69,897 — 184,487 184,487 — Provision for (reversal of) credit losses 3,000 7,314 4,314 (7,000) (2,912) 4,088 Net interest income after provision for (reversal of) credit losses 66,897 62,583 (4,314) 191,487 187,399 (4,088) Total noninterest income 15,956 15,956 — 42,912 42,912 — Total noninterest expense 56,113 56,113 — 179,172 179,172 — Income before income taxes 26,740 22,426 (4,314) 55,227 51,139 (4,088) Income tax expense (5,864) (4,936) 928 (11,875) (10,994) 881 Net income before attribution of noncontrolling interest 20,876 17,490 (3,386) 43,352 40,145 (3,207) Noncontrolling interest (44) (44) — (1,192) (1,192) — Net income attributable to Amerant Bancorp Inc. $ 20,920 $ 17,534 $ (3,386) $ 44,544 $ 41,337 $ (3,207) Basic earnings per common share $ 0.62 $ 0.52 $ (0.10) $ 1.31 $ 1.22 $ (0.09) Diluted earnings per common share $ 0.62 $ 0.52 $ (0.10) $ 1.30 $ 1.21 $ (0.09) Cash dividends declared per common share $ 0.09 $ 0.09 $ — $ 0.27 $ 0.27 $ — __________________ (1) Quarterly amounts previously reported on our quarterly reports on Form 10-Q for the periods ended March 31, 2022, June 30, 2022 and September 30, 2022 do not reflect the adoption of CECL. In the fourth quarter of 2022, the Company recorded a provision for credit losses totaling $20.9 million, including $11.1 million related to the retroactive effect of adopting CECL for all previous quarterly periods in the year ended December 31, 2022, including loan growth and changes to macro-economic conditions during the period. Quarterly amounts included in the 2022 Form 10-K and in this Form 10-Q reflect the impacts of the adoption of CECL on each interim period of 2022. See the 2022 Form 10-K for more details on the adoption of CECL. Guidance on Fair Value Hedges In March 2022, the FASB issued amended guidance to expand and clarify existing guidance on fair value hedge accounting of interest rate risk for portfolios of financial assets. The amendments clarify, among others, the “last-of-layer” method for making the fair value hedge accounting for these portfolios more accessible. The amendment also improves the last-of-layer concepts and expands them to non-prepayable financial assets, allowing more flexibility in the structure of derivatives used to hedge interest rate risk. The amended guidance is effective for public business entities for fiscal years beginning after December 15, 2022, and interim periods within those fiscal years. For all other entities, the amended guidance is effective for fiscal years beginning after December 15, 2023. The amended guidance is available for early adoption. The Company adopted this guidance as of January 1, 2023, and determined that its adoption had no impact to its consolidated financial statements. Issued and Not Yet Adopted For a complete summary of recently issued accounting guidance that has not yet been adopted, see
Subsequent Events	Subsequent EventsThe effects of other significant subsequent events, if any, have been recognized or disclosed in these unaudited interim consolidated financial statements.

Business, Basis of Presentati_3

Business, Basis of Presentation and Summary of Significant Accounting Policies (Tables)	9 Months Ended
	Sep. 30, 2023
Accounting Policies [Abstract]
Schedule of Dividends Declared	Set forth below are the details of dividends declared and paid by the Company in the three and nine month periods ended September 30, 2023 and 2022: Declaration Date Record Date Payment Date Dividend Per Share Dividend Amount 07/19/2023 08/15/2023 08/31/2023 $0.09 $3.0 million 04/19/2023 05/15/2023 05/31/2023 $0.09 $3.0 million 01/18/2023 02/13/2023 02/28/2023 $0.09 $3.0 million 07/20/2022 08/17/2022 08/31/2022 $0.09 $3.0 million 04/13/2022 05/13/2022 05/31/2022 $0.09 $3.0 million 01/19/2022 02/11/2022 02/28/2022 $0.09 $3.2 million
Schedule of Impact of Adopting CECL	The following table reflects the impact of adopting CECL on the allowance for credit losses (“ACL”) and other line items on the Company’s consolidated financial statements as of and for the three and nine month periods ended September 30, 2022: Consolidated Balance Sheets As of September 30, 2022 (in thousands) As Reported As Recast (1) Changes Assets Allowance for credit losses $ 53,711 $ 76,473 $ 22,762 Deferred tax assets, net 45,791 51,644 5,853 Liabilities Accounts payable, accrued liabilities and other liabilities 181,693 181,863 170 Stockholders’ Equity Retained earnings 588,495 571,416 (17,079) Consolidated Statements of Operations Three Months Ended September 30, 2022 Nine Months Ended September 30, 2022 (in thousands, except per share amounts) As Reported As Recast (1) Changes As Reported As Recast (1) Changes Total interest income $ 89,137 $ 89,137 $ — $ 225,402 $ 225,402 $ — Total interest expense 19,240 19,240 — 40,915 40,915 — Net interest income 69,897 69,897 — 184,487 184,487 — Provision for (reversal of) credit losses 3,000 7,314 4,314 (7,000) (2,912) 4,088 Net interest income after provision for (reversal of) credit losses 66,897 62,583 (4,314) 191,487 187,399 (4,088) Total noninterest income 15,956 15,956 — 42,912 42,912 — Total noninterest expense 56,113 56,113 — 179,172 179,172 — Income before income taxes 26,740 22,426 (4,314) 55,227 51,139 (4,088) Income tax expense (5,864) (4,936) 928 (11,875) (10,994) 881 Net income before attribution of noncontrolling interest 20,876 17,490 (3,386) 43,352 40,145 (3,207) Noncontrolling interest (44) (44) — (1,192) (1,192) — Net income attributable to Amerant Bancorp Inc. $ 20,920 $ 17,534 $ (3,386) $ 44,544 $ 41,337 $ (3,207) Basic earnings per common share $ 0.62 $ 0.52 $ (0.10) $ 1.31 $ 1.22 $ (0.09) Diluted earnings per common share $ 0.62 $ 0.52 $ (0.10) $ 1.30 $ 1.21 $ (0.09) Cash dividends declared per common share $ 0.09 $ 0.09 $ — $ 0.27 $ 0.27 $ — __________________ (1) Quarterly amounts previously reported on our quarterly reports on Form 10-Q for the periods ended March 31, 2022, June 30, 2022 and September 30, 2022 do not reflect the adoption of CECL. In the fourth quarter of 2022, the Company recorded a provision for credit losses totaling $20.9 million, including $11.1 million related to the retroactive effect of adopting CECL for all previous quarterly periods in the year ended December 31, 2022, including loan growth and changes to macro-economic conditions during the period. Quarterly amounts included in the 2022 Form 10-K and in this Form 10-Q reflect the impacts of the adoption of CECL on each interim period of 2022. See the 2022 Form 10-K for more details on the adoption of CECL.

Securities (Tables)

Securities (Tables)	9 Months Ended
	Sep. 30, 2023
Investments, Debt and Equity Securities [Abstract]
Schedule of Available for Sale Securities from Amortized Cost to Fair Value	Amortized cost, allowance for credit losses and approximate fair values of debt securities available for sale are summarized as follows: September 30, 2023 Amortized Gross Unrealized Allowance for Credit Losses Estimated (in thousands) Gains Losses U.S. government-sponsored enterprise debt securities (1) (2) $ 473,047 $ 26 $ (58,438) $ — $ 414,635 Corporate debt securities (2) 285,370 — (32,792) — 252,578 U.S. government agency debt securities (1) (2) 409,306 61 (53,380) — 355,987 Collateralized loan obligations 5,000 5 — — 5,005 Municipal bonds (1) 1,732 — (92) — 1,640 U.S. treasury securities 3,976 — (24) — 3,952 Total debt securities available for sale (3) $ 1,178,431 $ 92 $ (144,726) $ — $ 1,033,797 __________________ (1) Includes residential mortgage-backed securities. As of September 30, 2023, we had total residential-mortgage backed securities, included as part of total debt securities available for sale, with amortized cost of $769.4 million and fair value of $668.7 million. (2) Includes commercial mortgage-backed securities. As of September 30, 2023, we had total commercial mortgage-backed securities, included as part of total debt securities available for sale, with amortized cost of $101.1 million and fair value of $88.8 million . (3) Excludes accrued interest receivable of $6.3 million as of September 30, 2023, which is included as part of accrued interest receivable and other assets in the Company’s consolidated balance sheet. The Company did not record any write offs on accrued interest receivable related to these securities in the three and nine month periods ended September 30, 2023. December 31, 2022 Amortized Gross Unrealized Allowance for Credit Losses Estimated (in thousands) Gains Losses U.S. government sponsored enterprise debt securities (1) (2) $ 480,359 $ 981 $ (43,666) $ — $ 437,674 Corporate debt securities (2) 306,898 1 (26,199) — 280,700 U.S. government agency debt securities (1) (2) 373,593 42 (42,814) — 330,821 U.S. treasury securities 1,997 — (1) — 1,996 Municipal bonds (1) 1,731 — (75) — 1,656 Collateralized loan obligations 5,000 — (226) — 4,774 Total debt securities available for sale (3) $ 1,169,578 $ 1,024 $ (112,981) $ — $ 1,057,621 __________________ (1) Includes residential mortgage-backed securities. As of December 31, 2022, we had total residential-mortgage backed securities, included as part of total debt securities available for sale, with amortized cost of $743.0 million and fair value of $666.5 million. (2) Includes commercial mortgage-backed securities. As of December 31, 2022, we had total commercial mortgage-backed securities, included as part of total debt securities available for sale, with amortized cost of $91.0 million and fair value of $80.9 million. (3) Excludes accrued interest receivable of $5.6 million as of December 31, 2022, which is included as part of accrued interest receivable and other assets in the Company’s consolidated balance sheet. The Company did not record any write offs on accrued interest receivable related to these securities in 2022.
Schedule of Realized Gain (Loss)	In the three and nine month periods ended September 30, 2023 and 2022, proceeds from sales, redemptions and calls, gross realized gains, and gross realized losses of debt securities available for sale were as follows: Three Months Ended September 30, Nine Months Ended September 30, (in thousands) 2023 2022 2023 2022 Proceeds from sales, redemptions and calls of debt securities available for sale $ — $ 12,154 $ 1,240 $ 26,312 Gross realized gains $ — $ 22 $ — $ 71 Gross realized losses — — (10,760) — Realized (loss) gain, net $ — $ 22 $ (10,760) $ 71
Schedule of Available for Sale Securities with Unrealized Losses	The Company’s investment in debt securities available for sale with unrealized losses aggregated by the length of time that individual securities have been in a continuous unrealized loss position, are summarized below: September 30, 2023 Less Than 12 Months 12 Months or More Total (in thousands, except securities count) Number of Securities Estimated Unrealized Number of Securities Estimated Unrealized Estimated Unrealized U.S. government-sponsored enterprise debt securities 52 $ 79,491 $ (3,063) 335 $ 333,171 $ (55,375) $ 412,662 $ (58,438) Corporate debt securities 6 13,242 (673) 55 239,336 (32,119) 252,578 (32,792) U.S. government agency debt securities 30 43,592 (941) 167 294,482 (52,439) 338,074 (53,380) Municipal bonds — — — 3 1,640 (92) 1,640 (92) U.S. treasury securities 2 3,952 (24) — — — 3,952 (24) 90 $ 140,277 $ (4,701) 560 $ 868,629 $ (140,025) $ 1,008,906 $ (144,726) December 31, 2022 Less Than 12 Months 12 Months or More Total (in thousands, except securities count) Number of Securities Estimated Unrealized Number of Securities Estimated Unrealized Estimated Unrealized U.S. government sponsored enterprise debt securities 250 $ 292,595 $ (22,315) 108 $ 96,986 $ (21,351) $ 389,581 $ (43,666) Corporate debt securities 50 203,516 (13,374) 14 72,190 (12,825) 275,706 (26,199) U.S. government agency debt securities 92 88,056 (4,976) 104 240,668 (37,838) 328,724 (42,814) Municipal bonds 3 1,656 (75) — — — 1,656 (75) U.S. treasury securities 1 1,996 (1) — — — 1,996 (1) Collateralized Loan Obligations 1 4,774 (226) — — — 4,774 (226) 397 $ 592,593 $ (40,967) 226 $ 409,844 $ (72,014) $ 1,002,437 $ (112,981) The Company’s investment in debt securities held to maturity with unrealized losses aggregated by length of time that individual securities have been in a continuous unrealized loss position, are summarized below: September 30, 2023 Less Than 12 Months 12 Months or More Total (in thousands) Number of Securities Estimated Unrealized Number of Securities Estimated Unrealized Estimated Unrealized U.S. government agency debt securities 1 $ 9,425 $ (500) 12 $ 45,239 $ (9,838) $ 54,664 $ (10,338) U.S. government sponsored enterprise debt securities — — — 34 140,501 (24,751) 140,501 (24,751) 1 $ 9,425 $ (500) 46 $ 185,740 $ (34,589) $ 195,165 $ (35,089) December 31, 2022 Less Than 12 Months 12 Months or More Total (in thousands) Number of Securities Estimated Unrealized Number of Securities Estimated Unrealized Estimated Unrealized U.S. government agency debt securities — $ — $ — 12 $ 50,755 $ (7,778) $ 50,755 $ (7,778) U.S. government sponsored enterprise debt securities 31 142,033 (9,085) 3 14,689 (7,738) 156,722 (16,823) 31 $ 142,033 $ (9,085) 15 $ 65,444 $ (15,516) $ 207,477 $ (24,601)
Schedule of Debt Securities, Held-to-Maturity	Amortized cost and approximate fair values of debt securities held to maturity are summarized as follows: September 30, 2023 Amortized Gross Unrealized Estimated Allowance for Credit Losses (in thousands) Gains Losses U.S. government agency debt securities (1) $ 65,002 $ — $ (10,338) $ 54,664 $ — U.S. government sponsored enterprise debt securities(1) (2) 165,252 — (24,751) 140,501 — Total debt securities held to maturity (3) $ 230,254 $ — $ (35,089) $ 195,165 $ — __________________ (1) Includes residential mortgage-backed securities. As of September 30, 2023, we had total residential mortgage-backed securities, included as part of total debt securities held to maturity, with amortized cost of $202.6 million and fair value of $170.6 million. (2) Includes commercial mortgage-backed securities. As of September 30, 2023, we had total commercial mortgage-backed securities, included as part of total debt securities held to maturity, with amortized cost of $27.6 million and fair value of $24.5 million. (3) Excludes accrued interest receivable of $0.7 million as of September 30, 2023, which is included as part of accrued interest receivable and other assets in the Company’s consolidated balance sheet. The Company did not record any write offs on accrued interest receivable related to these securities in the three and nine month periods ended September 30, 2023. December 31, 2022 Amortized Gross Unrealized Estimated Allowance for Credit Losses (in thousands) Gains Losses U.S. government agency debt securities (1) $ 68,556 $ 109 $ (7,778) $ 60,887 $ — U.S. government sponsored enterprise debt securities (1) (2) 173,545 — (16,823) 156,722 — Total debt securities held to maturity (3) $ 242,101 $ 109 $ (24,601) $ 217,609 $ — __________________ (1) Includes residential mortgage-backed securities. As of December 31, 2022, we had total residential mortgage-backed securities, included as part of total debt securities held to maturity, with amortized cost of $213.9 million and fair value of $191.4 million. (2) Includes commercial mortgage-backed securities. As of December 31, 2022, includes total commercial mortgage-backed securities with amortized cost of $28.2 million and fair value of $26.2 million. (3) Excludes accrued interest receivable of $0.8 million as of December 31, 2022, which is included as part of accrued interest receivable and other assets in the Company’s consolidated balance sheet. The Company did not record any write offs on accrued interest receivable related to these securities in 2022.
Schedule of Contractual Maturities of Securities	Contractual maturities of debt securities at September 30, 2023 are as follows: Available for Sale Held to Maturity (in thousands) Amortized Estimated Amortized Estimated Within 1 year $ 2,705 $ 2,682 $ — $ — After 1 year through 5 years 125,842 118,742 6,603 3,247 After 5 years through 10 years 228,020 199,276 14,634 13,358 After 10 years 821,864 713,097 209,017 178,560 $ 1,178,431 $ 1,033,797 $ 230,254 $ 195,165

Loans (Tables)

Loans (Tables)	9 Months Ended
	Sep. 30, 2023
Receivables [Abstract]
Schedule of Loan Portfolio by Classes	Loans held for investment consist of the following loan classes: (in thousands) September 30, December 31, Real estate loans Commercial real estate Non-owner occupied $ 1,593,571 $ 1,615,716 Multi-family residential 771,654 820,023 Land development and construction loans 301,938 273,174 2,667,163 2,708,913 Single-family residential 1,371,194 1,102,845 Owner occupied 1,129,921 1,046,450 5,168,278 4,858,208 Commercial loans (1) 1,452,759 1,381,234 Loans to financial institutions and acceptances 13,353 13,292 Consumer loans and overdrafts 438,997 604,460 Total loans held for investment, gross (2) $ 7,073,387 $ 6,857,194 _________________ (1) At September 30, 2023 and December 31, 2022, includes equipment loans and leases totaling $49.3 million and $45.3 million, respectively. (2) Excludes accrued interest receivable. (in thousands) September 30, December 31, 2022 Loans held for sale at the lower of fair value or cost Real estate loans Commercial real estate Non-owner occupied $ 43,256 $ — Total loans held for sale at the lower of fair value or cost (1) 43,256 — Mortgage loans held for sale at fair value Land development and construction loans (2) 6,931 9,424 Single-family residential (3) 19,022 53,014 Total loans held for sale at fair value (4) 25,953 62,438 Total loans held for sale (5)(6) $ 69,209 $ 62,438 _______________ (1) In the third quarter of 2023, the Company transferred a New York-based CRE loan held for investment to the loans held for sale category, and recognized a valuation allowance of $5.6 million as result of the fair value adjustment of this loan. The Company subsequently sold this loan and there was no material impact to the Company’s results of operations as result of this transaction. (2) In the nine months ended September 30, 2023, the Company transferred approximately $14 million in land development and construction loans held for sale to the loans held for investment category. (3) In the nine months ended September 30, 2023, the Company transferred approximately $81 million in single-family residential loans held for sale to the loans held for investment category. (4) Loans held for sale in connection with Amerant Mortgage’s ongoing business. (5) Remained current and in accrual status at each of the periods shown. (6) Excludes accrued interest receivable.
Schedule of Loan Portfolio Delinquencies	The age analyses of the loan portfolio by class as of September 30, 2023 and December 31, 2022, are summarized in the following tables: September 30, 2023 Total Loans, Past Due (in thousands) Current 30-59 60-89 Greater than Total Past Real estate loans Commercial real estate Non-owner occupied $ 1,593,571 $ 1,593,571 $ — $ — $ — $ — Multi-family residential 771,654 748,075 235 — 23,344 23,579 Land development and construction loans 301,938 301,938 — — — — 2,667,163 2,643,584 235 — 23,344 23,579 Single-family residential 1,371,194 1,369,078 — 1,845 271 2,116 Owner occupied 1,129,921 1,124,503 1,393 1,229 2,796 5,418 5,168,278 5,137,165 1,628 3,074 26,411 31,113 Commercial loans 1,452,759 1,442,915 3,225 4,209 2,410 9,844 Loans to financial institutions and acceptances 13,353 13,353 — — — — Consumer loans and overdrafts 438,997 433,444 2,995 2,558 — 5,553 $ 7,073,387 $ 7,026,877 $ 7,848 $ 9,841 $ 28,821 $ 46,510 December 31, 2022 Total Loans, Past Due (in thousands) Current 30-59 60-89 Greater than Total Past Real estate loans Commercial real estate Non-owner occupied $ 1,615,716 $ 1,615,716 $ — $ — $ — $ — Multi-family residential 820,023 818,394 1,387 242 — 1,629 Land development and construction loans 273,174 273,174 — — — — 2,708,913 2,707,284 1,387 242 — 1,629 Single-family residential 1,102,845 1,098,310 3,140 150 1,245 4,535 Owner occupied 1,046,450 1,039,928 172 6,014 336 6,522 4,858,208 4,845,522 4,699 6,406 1,581 12,686 Commercial loans 1,381,234 1,373,042 1,523 475 6,194 8,192 Loans to financial institutions and acceptances 13,292 13,292 — — — — Consumer loans and overdrafts 604,460 601,921 2,439 62 38 2,539 $ 6,857,194 $ 6,833,777 $ 8,661 $ 6,943 $ 7,813 $ 23,417 The following tables present the amortized cost basis of loans on nonaccrual status and loans past due over 90 days and still accruing as of September 30, 2023 and December 31, 2022: As of September 30, 2023 (in thousands) Nonaccrual Loans With No Related Allowance Nonaccrual Loans With Related Allowance Total Nonaccrual Loans (1) Loans Past Due Over 90 Days and Still Accruing Real estate loans Commercial real estate Nonowner occupied $ — $ — $ — $ — Multi-family residential — 23,344 $ 23,344 — — 23,344 23,344 — Single-family residential 843 1,690 $ 2,533 — Owner occupied 1,951 149 2,100 — 2,794 25,183 $ 27,977 — Commercial loans 959 3,754 $ 4,713 504 Consumer loans and overdrafts 1 — 1 — Total $ 3,754 $ 28,937 $ 32,691 $ 504 As of December 31, 2022 (in thousands) Nonaccrual Loans With No Related Allowance Nonaccrual Loans With Related Allowance Total Nonaccrual Loans (1) Loans Past Due Over 90 Days and Still Accruing Real estate loans Commercial real estate Nonowner occupied $ 20,057 $ — $ 20,057 $ — Multi-family residential — — — — 20,057 — 20,057 — Single-family residential — 1,526 1,526 253 Owner occupied 5,936 334 6,270 — 25,993 1,860 27,853 253 Commercial loans 482 8,789 9,271 183 Consumer loans and overdrafts — 4 4 35 Total $ 26,475 $ 10,653 $ 37,128 $ 471

Allowance for Credit Losses (Ta

Allowance for Credit Losses (Tables)	9 Months Ended
	Sep. 30, 2023
Receivables [Abstract]
Schedule of Allowance for Loan Losses	The analyses by loan segment of the changes in the ACL for the three and nine month periods ended September 30, 2023 and 2022 is summarized in the following tables: Three Months Ended September 30, 2023 (in thousands) Real Estate Commercial Financial Consumer Total Balance at beginning of the period $ 42,238 $ 36,626 $ — $ 27,092 $ 105,956 (Reversal of ) provision for credit losses - loans (3,067) 4,852 — 5,615 7,400 Loans charged-off (90) (9,288) — (6,441) (15,819) Recoveries 10 736 — 490 1,236 Balance at end of the period $ 39,091 $ 32,926 $ — $ 26,756 $ 98,773 Nine Months Ended September 30, 2023 (in thousands) Real Estate Commercial Financial Consumer Total Balance at beginning of the period $ 25,237 $ 25,888 $ — $ 32,375 $ 83,500 Provision for credit losses - loans 13,655 20,639 — 13,883 48,177 Loans charged-off (90) (18,715) — (20,428) (39,233) Recoveries 289 5,114 — 926 6,329 Balance at end of the period $ 39,091 $ 32,926 $ — $ 26,756 $ 98,773 Three Months Ended September 30, 2022 Recast (1) (in thousands) Real Estate Commercial Financial Consumer Total Balance at beginning of the period $ 20,459 $ 21,152 $ — $ 28,864 $ 70,475 Provision for credit losses - loans (1) 2,869 927 — 3,518 7,314 Loans charged-off — (99) — (1,712) (1,811) Recoveries 12 443 — 40 495 Balance at end of the period (1) $ 23,340 $ 22,423 $ — $ 30,710 $ 76,473 _______________ (1) Recast amounts reflect the impact of the adoption of CECL effective as of January 1, 2022. See Note 1 “Business, Basis of Presentation and Summary of Significant Accounting Policies” for additional information. Nine Months Ended September 30, 2022 Recast (1) (in thousands) Real Estate Commercial Financial Consumer Total Balance at beginning of the period $ 17,952 $ 38,979 $ 42 $ 12,926 $ 69,899 Cumulative effect of adoption of accounting principle (1) 17,418 (8,281) (42) 9,579 18,674 (Reversal of) provision for credit losses - loans (1) (12,056) (2,435) — 11,579 (2,912) Loans charged-off — (7,979) — (3,674) (11,653) Recoveries 26 2,139 — 300 2,465 Balance at end of the period (1) $ 23,340 $ 22,423 $ — $ 30,710 $ 76,473 ______________ (1) Recast amounts reflect the impact of the adoption of CECL effective as of January 1, 2022. See Note 1 “Business, Basis of Presentation and Summary of Significant Accounting Policies” for additional information. The following is a summary of net proceeds from sales of loans held for investment by portfolio segment: Three Months Ended September 30, Real Estate Commercial Financial Consumer Total 2023 $ 20,500 $ 6,909 $ — $ — $ 27,409 2022 $ — $ 6,483 $ — $ — $ 6,483 Nine Months Ended September 30, Real Estate Commercial Financial Consumer Total 2023 $ 34,075 $ 7,796 $ — $ — $ 41,871 2022 $ 11,566 $ 6,483 $ — $ 1,313 $ 19,362
Schedule of Credit Quality Indicators	The following is a summary of the master risk categories and their associated loan risk ratings, as well as a description of the general characteristics of the master risk category: Loan Risk Rating Master risk category Nonclassified 4 to 10 Classified 1 to 3 Substandard 3 Doubtful 2 Loss 1
Schedule Of Financing Receivables By Type Of Collateral	The following tables present Loans held for investment by credit quality indicators and year of origination as of September 30, 2023 and December 31, 2022: September 30, 2023 Term Loans Amortized Cost Basis by Origination Year (in thousands) 2023 2022 2021 2020 2019 Prior Revolving Loans Total Real estate loans Commercial real estate Nonowner occupied Credit Risk Rating: Nonclassified Pass $ 99,056 $ 191,221 $ 597,265 $ 35,803 $ 90,311 $ 402,213 $ 177,702 $ 1,593,571 Special Mention — — — — — — — — Classified Substandard — — — — — — — — Doubtful — — — — — — — — Loss — — — — — — — — Total Nonowner occupied 99,056 191,221 597,265 35,803 90,311 402,213 177,702 1,593,571 Multi-family residential Credit Risk Rating: Nonclassified Pass 1,801 70,396 105,857 26,605 117,535 120,969 305,147 748,310 Special Mention — — — — — — — — Classified Substandard — — — — — 23,344 — 23,344 Doubtful — — — — — — — — Loss — — — — — — — — Total Multi-family residential 1,801 70,396 105,857 26,605 117,535 144,313 305,147 771,654 Land development and construction loans Credit Risk Rating: Nonclassified Pass 42,384 9,735 28,911 21,945 — 26,928 172,035 301,938 Special Mention — — — — — — — — Classified Substandard — — — — — — — — Doubtful — — — — — — — — Loss — — — — — — — — Total land development and construction loans 42,384 9,735 28,911 21,945 — 26,928 172,035 301,938 Single-family residential Credit Risk Rating: Nonclassified Pass 286,064 460,287 181,306 65,722 21,041 71,615 282,074 1,368,109 Special Mention — — — — — — — — Classified Substandard — — — — — 691 2,394 3,085 Doubtful — — — — — — — — Loss — — — — — — — — Total Single-family residential 286,064 460,287 181,306 65,722 21,041 72,306 284,468 1,371,194 Owner occupied Credit Risk Rating: Nonclassified Pass 143,861 262,104 434,620 20,904 58,112 161,840 44,066 1,125,507 Special Mention — — — — — 354 1,880 2,234 Classified Substandard — — 1,316 — — 864 — 2,180 Doubtful — — — — — — — — Loss — — — — — — — — Total owner occupied 143,861 262,104 435,936 20,904 58,112 163,058 45,946 1,129,921 September 30, 2023 Term Loans Amortized Cost Basis by Origination Year (in thousands) 2023 2022 2021 2020 2019 Prior Revolving Loans Total Non-real estate loans Commercial Loans Credit Risk Rating: Nonclassified Pass 302,410 292,024 79,465 12,127 34,900 38,184 660,939 1,420,049 Special Mention 7,007 — — — — — 19,968 26,975 Classified Substandard — 623 17 106 1,777 854 2,355 5,732 Doubtful — — — — 3 — — 3 Loss — — — — — — — — Total commercial Loans 309,417 292,647 79,482 12,233 36,680 39,038 683,262 1,452,759 Loans to financial institutions and acceptances Credit Risk Rating: Nonclassified Pass — — — — — 13,353 — 13,353 Special Mention — — — — — — — — Classified Substandard — — — — — — — — Doubtful — — — — — — — — Loss — — — — — — — — Total loans to financial institutions and acceptances — — — — — 13,353 — 13,353 Consumer loans Credit Risk Rating: Nonclassified Pass 28,583 211,027 61,386 21,306 35 10 116,649 438,996 Special Mention — — — — — — — — Classified Substandard — — — — — 1 — 1 Doubtful — — — — — — — — Loss — — — — — — — — Total consumer loans 28,583 211,027 61,386 21,306 35 11 116,649 438,997 Total loans held for investment, gross $ 911,166 $ 1,497,417 $ 1,490,143 $ 204,518 $ 323,714 $ 861,220 $ 1,785,209 $ 7,073,387 December 31, 2022 Term Loans Amortized Cost Basis by Origination Year (in thousands) 2022 2021 2020 2019 2018 Prior Revolving Loans Total Real estate loans Commercial real estate Nonowner occupied Credit Risk Rating: Nonclassified Pass $ 177,852 $ 637,015 $ 34,525 $ 91,941 $ 82,385 $ 342,174 $ 221,333 $ 1,587,225 Special Mention — — — — — 8,378 — 8,378 Classified Substandard — — — 20,113 — — — 20,113 Doubtful — — — — — — — — Loss — — — — — — — — Total Nonowner occupied 177,852 637,015 34,525 112,054 82,385 350,552 221,333 1,615,716 Multi-family residential Credit Risk Rating: Nonclassified Pass 85,670 110,943 26,881 126,724 27,242 124,433 318,130 820,023 Special Mention — — — — — — — — Classified Substandard — — — — — — — — Doubtful — — — — — — — — Loss — — — — — — — — Total Multi-family residential 85,670 110,943 26,881 126,724 27,242 124,433 318,130 820,023 Land development and construction loans Credit Risk Rating: Nonclassified Pass 8,846 27,746 23,459 188 — 26,930 186,005 273,174 Special Mention — — — — — — — — Classified Substandard — — — — — — — — Doubtful — — — — — — — — Loss — — — — — — — — Total land development and construction loans 8,846 27,746 23,459 188 — 26,930 186,005 273,174 Single-family residential Credit Risk Rating: Nonclassified Pass 480,328 186,790 70,853 21,654 16,630 65,249 259,411 1,100,915 Special Mention — — — — — — — — Classified Substandard — — — — — 741 1,189 1,930 Doubtful — — — — — — — — Loss — — — — — — — — Total Single-family residential 480,328 186,790 70,853 21,654 16,630 65,990 260,600 1,102,845 Owner occupied Credit Risk Rating: Nonclassified Pass 256,816 479,961 22,341 63,629 21,790 162,411 33,146 1,040,094 Special Mention — — — — — — — — Classified Substandard 2,096 1,631 656 — 650 1,283 40 6,356 Doubtful — — — — — — — — Loss — — — — — — — — Total owner occupied 258,912 481,592 22,997 63,629 22,440 163,694 33,186 1,046,450 December 31, 2022 Term Loans Amortized Cost Basis by Origination Year (in thousands) 2022 2021 2020 2019 2018 Prior Revolving Loans Total Non-real estate loans Commercial Loans Credit Risk Rating: Nonclassified Pass 400,781 95,470 19,815 42,936 32,248 16,297 761,489 1,369,036 Special Mention — — — — 1,499 — 250 1,749 Classified Substandard — 84 267 194 27 984 8,890 10,446 Doubtful — — — 3 — — — 3 Loss — — — — — — — — Total commercial Loans 400,781 95,554 20,082 43,133 33,774 17,281 770,629 1,381,234 Loans to financial institutions and acceptances Credit Risk Rating: Nonclassified Pass — — — — — 13,292 — 13,292 Special Mention — — — — — — — — Classified Substandard — — — — — — — — Doubtful — — — — — — — — Loss — — — — — — — — Total loans to financial institutions and acceptances — — — — — 13,292 — 13,292 Consumer loans Credit Risk Rating: Nonclassified Pass 338,744 121,011 29,053 68 54 — 115,300 604,230 Special Mention — — — — — — — — Classified Substandard 98 128 — — — 4 — 230 Doubtful — — — — — — — — Loss — — — — — — — — Total consumer loans 338,842 121,139 29,053 68 54 4 115,300 604,460 Total loans held for investment, gross $ 1,751,231 $ 1,660,779 $ 227,850 $ 367,450 $ 182,525 $ 762,176 $ 1,905,183 $ 6,857,194 The following tables present gross charge-offs by year of origination for the periods presented: Three Months Ended September 30, 2023 Term Loans Charge-offs by Origination Year (in thousands) 2023 2022 2021 2020 2019 Prior Revolving Loans Total Quarter-To-Date Gross Charge-offs Real estate loans Commercial real estate Nonowner occupied $ — $ — $ — $ — $ — $ 90 $ — $ 90 Multi-family residential — — — — — — — — Land development and construction loans — — — — — — — — — — — — — 90 — 90 Single-family residential — — — — — — — — Owner occupied — — — — — — — — — — — — — 90 — 90 Commercial loans 108 534 46 4,868 1,814 1,918 — 9,288 Loans to financial institutions and acceptances — — — — — — — — Consumer loans and overdrafts 193 3,527 2,365 185 9 162 — 6,441 Total Quarter-To-Date Gross Charge-Offs $ 301 $ 4,061 $ 2,411 $ 5,053 $ 1,823 $ 2,170 $ — $ 15,819 Nine Months Ended September 30, 2023 Term Loans Charge-offs by Origination Year (in thousands) 2023 2022 2021 2020 2019 Prior Revolving Loans Total Year-To-Date Gross Charge-offs Real estate loans Commercial real estate Nonowner occupied $ — $ — $ — $ — $ — $ 90 $ — $ 90 Multi-family residential — — — — — — — — Land development and construction loans — — — — — — — — — — — — — 90 — 90 Single-family residential — — — — — 39 — 39 Owner occupied — — — — — — — — — — — — — 129 — 129 Commercial loans 108 9,308 216 5,026 1,814 2,243 — 18,715 Loans to financial institutions and acceptances — — — — — — — — Consumer loans and overdrafts 592 9,589 8,608 1,031 22 547 — 20,389 Total Year-To-Date Gross Charge-Offs $ 700 $ 18,897 $ 8,824 $ 6,057 $ 1,836 $ 2,919 $ — $ 39,233 Three Months Ended September 30, 2022 Term Loans Charge-offs by Origination Year (in thousands) 2022 2021 2020 2019 2018 Prior Revolving Loans Total Quarter-To-Date Gross Charge-offs Real estate loans Commercial real estate Nonowner occupied $ — $ — $ — $ — $ — $ — $ — $ — Multi-family residential — — — — — — — — Land development and construction loans — — — — — — — — — — — — — — — — Single-family residential — — — — — — — Owner occupied — — — — — — — — — — — — — — — — Commercial loans — — — — — 99 — 99 Loans to financial institutions and acceptances — — — — — — — — Consumer loans and overdrafts 622 785 305 — — — 1,712 Total Quarter-To-Date Gross Charge-Offs $ 622 $ 785 $ 305 $ — $ — $ 99 $ — $ 1,811 Nine Months Ended September 30, 2022 Term Loans Charge-offs by Origination Year (in thousands) 2022 2021 2020 2019 2018 Prior Revolving Loans Total Year-To-Date Gross Charge-offs Real estate loans Commercial real estate Nonowner occupied $ — $ — $ — $ — $ — $ — $ — $ — Multi-family residential — — — — — — — — Land development and construction loans — — — — — — — — — — — — — — — — Single-family residential — — — — — 14 — 14 Owner occupied — — — — — — — — — — — — — 14 — 14 Commercial loans 2,523 — 4,429 541 — 486 — 7,979 Loans to financial institutions and acceptances — — — — — — — — Consumer loans and overdrafts 665 2,008 986 — — 1 — 3,660 Total Year-To-Date Gross Charge-Offs $ 3,188 $ 2,008 $ 5,415 $ 541 $ — $ 501 $ — $ 11,653 As of September 30, 2023 Collateral Type (in thousands) Commercial Real Estate Residential Real Estate Other Total Specific Reserves Real estate loans Commercial real estate Multi-family residential $ 23,344 — — $ 23,344 8,567 Single-family residential (1) — 797 — 797 — Owner occupied (2) 1,951 — — 1,951 — Commercial loans — — 3,620 3,620 — Total $ 25,295 $ 797 $ 3,620 $ 29,712 $ 8,567 _________________ (1) Weighted-average loan-to-value was approximately 66.8% at September 30, 2023. (2) Weighted-average loan-to-value was approximately 58.1% at September 30, 2023. As of December 31, 2022 Collateral Type (in thousands) Commercial Real Estate Residential Real Estate Other Total Specific Reserves Real estate loans Commercial real estate Nonowner occupied (1) $ 20,121 $ — $ — $ 20,121 $ — Owner occupied (2) 5,934 — — 5,934 — 26,055 — — 26,055 — Commercial loans (3) 1,998 — 6,401 8,399 5,179 Total $ 28,053 $ — $ 6,401 $ 34,454 $ 5,179 _________________ (1) Weighted-average loan-to-value was approximately 92.7% at December 31, 2022. (2) Weighted-average loan-to-value was approximately 62.7% at December 31, 2022. (3) Includes loans with no specific reserves totaling $0.5 million with a weighted-average loan-to-value of approximately 42.0% at December 31, 2022.

Time Deposits (Tables)

Time Deposits (Tables)	9 Months Ended
	Sep. 30, 2023
Time Deposits Disclosure [Abstract]
Schedule of Time Deposit Maturities	The following table sets forth the maturities of our time deposits with individual balances equal to or greater than $100,000 as of September 30, 2023 and December 31, 2022: September 30, 2023 December 31, 2022 (in thousands, except percentages) Less than 3 months $ 394,866 30.1 % $ 140,292 15.1 % 3 to 6 months 151,991 11.6 % 148,137 16.0 % 6 to 12 months 598,763 45.7 % 497,436 53.6 % 1 to 3 years 157,740 12.0 % 135,663 14.6 % Over 3 years 8,215 0.6 % 6,889 0.7 % Total $ 1,311,575 100.0 % $ 928,417 100.0 %

Advances from the Federal Hom_2

Advances from the Federal Home Loan Bank (Tables)	9 Months Ended
	Sep. 30, 2023
Advance from Federal Home Loan Bank [Abstract]
Schedule of Outstanding Advances from the FHLB	At September 30, 2023 and December 31, 2022, the Company had outstanding advances from the FHLB as follows: Outstanding Balance Year of Maturity Interest Interest At September 30, 2023 At December 31, 2022 (in thousands) 2023 0.61% to 4.84% Fixed — 304,821 2024 1.68% Fixed — 100,000 2025 1.40% to 3.07% Fixed — 451,665 2026 4.25% to 4.90% Fixed 110,000 — 2027 and after (1) 1.82% to 4.40% Fixed 485,000 50,000 $ 595,000 $ 906,486 _______________

Junior Subordinated Debenture_2

Junior Subordinated Debentures Held by Trust Subsidiaries (Tables)	9 Months Ended
	Sep. 30, 2023
Debt Disclosure [Abstract]
Schedule of the Outstanding Trust Preferred Securities	The following tables provide information on the outstanding Trust Preferred Securities issued by, and the junior subordinated debentures issued to, each of the statutory trust subsidiaries as of September 30, 2023 and December 31, 2022: September 30, 2023 (in thousands) Amount of Principal Year of Annual Rate of Trust Year of Commercebank Capital Trust VI $ 9,250 $ 9,537 2002 3-M SOFR + 3.61% 2033 Commercebank Capital Trust VII 8,000 8,248 2003 3-M SOFR + 3.51% 2033 Commercebank Capital Trust VIII 5,000 5,155 2004 3-M SOFR + 3.11% 2034 Commercebank Capital Trust IX 25,000 25,774 2006 3-M SOFR + 2.01% 2038 Commercebank Capital Trust X 15,000 15,464 2006 3-M SOFR + 2.04% 2036 $ 62,250 $ 64,178 December 31, 2022 (in thousands) Amount of Principal Year of Annual Rate of Trust Year of Commercebank Capital Trust VI $ 9,250 $ 9,537 2002 3-M LIBOR + 3.35% 2033 Commercebank Capital Trust VII 8,000 8,248 2003 3-M LIBOR + 3.25% 2033 Commercebank Capital Trust VIII 5,000 5,155 2004 3-M LIBOR + 2.85% 2034 Commercebank Capital Trust IX 25,000 25,774 2006 3-M LIBOR + 1.75% 2038 Commercebank Capital Trust X 15,000 15,464 2006 3-M LIBOR + 1.78% 2036 $ 62,250 $ 64,178

Derivative Instruments (Tables)

Derivative Instruments (Tables)	9 Months Ended
	Sep. 30, 2023
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments	At September 30, 2023 and December 31, 2022, the fair values of the Company’s derivative instruments were as follows: September 30, 2023 December 31, 2022 (in thousands) Other Assets Other Liabilities Other Assets Other Liabilities Interest rate swaps designated as cash flow hedges $ 1,199 $ 919 $ 167 $ 45 Interest rate swaps not designated as hedging instruments: Customers 62 76,173 603 66,439 Third party broker 76,173 62 66,439 603 76,235 76,235 67,042 67,042 Interest rate caps not designated as hedging instruments: Customers — 8,374 — 10,002 Third party broker 8,715 — 10,207 — 8,715 8,374 10,207 10,002 Mortgage derivatives not designated as hedging instruments: Interest rate lock commitments 708 — 727 — Forward contracts 287 90 107 71 995 90 834 71 $ 87,144 $ 85,618 $ 78,250 $ 77,160

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2023
Leases [Abstract]
Schedule of Lease Cost	Lease costs for the three and nine month periods ended September 30, 2023 and 2022 were as follows: (in thousands) Three months ended September 30, Nine months ended September 30, 2023 2022 2023 2022 Lease cost Operating lease cost $ 5,248 $ 4,278 $ 13,866 $ 13,008 Short-term lease cost 24 18 24 62 Variable lease cost 588 414 1,675 1,304 Sublease income (1) (857) (527) (2,582) (2,164) Total lease cost, net $ 5,003 $ 4,183 $ 12,983 $ 12,210 _______________ (1) Primarily in connection with the subleasing of portions of the Company’s headquarters building and, to a lesser extent, the sublease of the New York office space. The following table provides supplemental information to leases as of and for the three and nine month periods ended September 30, 2023 and 2022: Three Months Ended September 30, Nine Months Ended Ended September 30, 2023 2022 2023 2022 (in thousands, except weighted average data) Cash paid for amounts included in the measurement of operating lease liabilities 4,267 3,499 11,908 10,811 Weighted average remaining lease term for operating leases 17.0 years 18.3 years 17.0 years 18.3 years Weighted average discount rate for operating leases 9.66 % 5.94 % 9.66 % 5.94 %
Schedule of Lessee, Operating Lease, Liability, Maturity	The following table presents a maturity analysis and reconciliation of the undiscounted cash flows to the total operating lease liabilities as of September 30, 2023 for the remaining 3 months of 2023 and thereafter: (in thousands) For the remaining three months of 2023 $ 3,585 2024 14,579 2025 14,659 2026 14,905 2027 15,216 Thereafter 199,817 Total minimum payments required 262,761 Less: implied interest (138,689) Total lease obligations $ 124,072

Stock-based Incentive Compens_2

Stock-based Incentive Compensation Plan (Tables)	9 Months Ended
	Sep. 30, 2023
Share-Based Payment Arrangement [Abstract]
Schedule of Restricted Stock Activity	The following table shows the activity of restricted stock awards during the nine months ended September 30, 2023: Number of restricted shares Weighted-average grant date fair value Non-vested shares, beginning of year 295,076 $ 25.83 Granted 10,440 27.42 Vested (103,118) 24.22 Forfeited (36,691) 23.87 Non-vested shares at September 30, 2023 165,707 $ 27.37
Schedule of Restricted Stock Units and Performance Stock Units	The following table shows the activity of RSUs and PSUs during the nine months ended September 30, 2023: Stock-settled RSUs Stock-settled PSUs Number of RSUs Weighted-average grant date fair value Number of PSUs Weighted-average grant date fair value Non-vested, beginning of year 123,970 $ 22.83 137,199 $ 17.43 Granted 231,976 24.18 53,420 25.09 Vested (64,820) 22.71 (10,442) 19.00 Forfeited (12,081) 27.08 (2,867) 33.63 Non-vested, at September 30, 2023 279,045 $ 23.80 177,310 $ 19.38

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive (loss) Income (“AOCL/AOCI”) (Tables)	9 Months Ended
	Sep. 30, 2023
Equity [Abstract]
Schedule of Components of AOCL/AOCI	The components of AOCL/AOCI are summarized as follows using applicable blended average federal and state tax rates for each period: September 30, 2023 December 31, 2022 (in thousands) Before Tax Tax Net of Tax Before Tax Tax Net of Tax Net unrealized holding losses on debt securities available for sale $ (144,634) $ 36,907 $ (107,727) $ (111,957) $ 28,605 $ (83,352) Net unrealized holding gains on interest rate swaps designated as cash flow hedges 2,818 (725) 2,093 3,659 (942) 2,717 Total (AOCL) AOCI $ (141,816) $ 36,182 $ (105,634) $ (108,298) $ 27,663 $ (80,635)
Schedule of Components of Other Comprehensive Loss	The components of other comprehensive loss for the periods presented are summarized as follows: Three Months Ended September 30, 2023 2022 (in thousands) Before Tax Tax Net of Tax Before Tax Tax Net of Tax Net unrealized holding losses on debt securities available for sale: Change in fair value arising during the period $ (25,007) $ 6,438 $ (18,569) $ (47,015) $ 12,056 $ (34,959) Reclassification adjustment for net losses included in net income — — — (22) 5 (17) (25,007) 6,438 (18,569) (47,037) 12,061 (34,976) Net unrealized holding losses (gains) on interest rate swaps designated as cash flow hedges: Change in fair value arising during the period 174 (45) 129 (22) 6 (16) Reclassification adjustment for net interest income included in net income (360) 92 (268) (345) 88 (257) (186) 47 (139) (367) 94 (273) Total other comprehensive loss $ (25,193) $ 6,485 $ (18,708) $ (47,404) $ 12,155 $ (35,249) Nine Months Ended September 30, 2023 2022 (in thousands) Before Tax Tax Net of Tax Before Tax Tax Net of Tax Net unrealized holding losses on debt securities available for sale: Change in fair value arising during the period $ (34,775) $ 8,836 $ (25,939) $ (135,554) $ 34,516 $ (101,038) Reclassification adjustment for net losses (gains) included in net income 2,098 (534) 1,564 (71) 18 (53) (32,677) 8,302 (24,375) (135,625) 34,534 (101,091) Net unrealized holding losses on interest rate swaps designated as cash flow hedges: Change in fair value arising during the period 288 (71) 217 295 (133) 162 Reclassification adjustment for net interest income included in net income (1,129) 288 (841) (667) 171 (496) (841) 217 (624) (372) 38 (334) Total other comprehensive loss $ (33,518) $ 8,519 $ (24,999) $ (135,997) $ 34,572 $ (101,425)

Contingencies (Tables)

Contingencies (Tables)	9 Months Ended
	Sep. 30, 2023
Commitments and Contingencies Disclosure [Abstract]
Schedule of Financial Instruments whose Contract Amount Represents Off-Balance Sheet Credit Risk	Financial instruments whose contract amount represents off-balance sheet credit risk at September 30, 2023 are generally short-term and are as follows: (in thousands) Approximate Commitments to extend credit $ 1,238,080 Standby letters of credit 32,300 Commercial letters of credit 64 $ 1,270,444
Schedule of Changes in the Allowance for Credit Losses for Off-Balance Sheet	The following table summarizes the changes in the allowance for credit losses for off-balance sheet credit risk exposures for the three and nine month periods ended September 30, 2023 and 2022: (in thousands) Three Months Ended September 30, Nine Months Ended September 30, 2023 2022 2023 2022 Balances at beginning of the period $ 2,002 $ 1,702 $ 1,702 $ 1,702 Provision for credit losses - off balance sheet exposures 600 — 900 — Balances at end of period $ 2,602 $ 1,702 $ 2,602 $ 1,702

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	9 Months Ended
	Sep. 30, 2023
Fair Value Disclosures [Abstract]
Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis	Assets and liabilities measured at fair value on a recurring basis are summarized below: September 30, 2023 (in thousands) Quoted Third-Party Internal Total Assets Cash and cash equivalents Other short-term investments $ — $ 6,024 $ — $ 6,024 Securities Debt securities available for sale U.S. government-sponsored enterprise debt securities — 414,635 — 414,635 Corporate debt securities — 252,578 — 252,578 U.S. government agency debt securities — 355,987 — 355,987 Collateralized loan obligations — 5,005 — 5,005 Municipal bonds — 1,640 — 1,640 U.S treasury securities — 3,952 — 3,952 — 1,033,797 — 1,033,797 Equity securities with readily determinable fair values not held for trading 2,438 — — 2,438 2,438 1,033,797 — 1,036,235 Mortgage loans held for sale (at fair value) — 25,952 — 25,952 Bank owned life insurance — 232,736 — 232,736 Other assets Mortgage servicing rights (MSRs) — — 1,306 1,306 Derivative instruments — 87,144 — 87,144 $ 2,438 $ 1,385,653 $ 1,306 $ 1,389,397 Liabilities Other liabilities Derivative instruments $ — $ 85,618 $ — $ 85,618 December 31, 2022 (in thousands) Quoted Third-Party Internal Total Assets Securities Debt securities available for sale U.S. government-sponsored enterprise debt securities $ — $ 437,674 $ — $ 437,674 Corporate debt securities — 280,700 — 280,700 U.S. government agency debt securities — 330,821 — 330,821 Collateralized loan obligations — 4,774 — 4,774 U.S treasury securities — 1,996 — 1,996 Municipal bonds — 1,656 — 1,656 — 1,057,621 — 1,057,621 Equity securities with readily determinable fair values not held for trading 11,383 — — 11,383 11,383 1,057,621 — 1,069,004 Mortgage loans held for sale (at fair value) — 62,438 — 62,438 Bank owned life insurance — 228,412 — 228,412 Other assets Mortgage servicing rights (MSRs) — — 1,307 1,307 Derivative instruments — 78,250 — 78,250 $ 11,383 $ 1,426,721 $ 1,307 $ 1,439,411 Liabilities Other liabilities Derivative instruments $ — $ 77,160 $ — $ 77,160
Schedule of Major Categories of Assets Measured at Fair Value on a Nonrecurring Basis	The following tables present the major categories of assets measured at fair value on a non-recurring basis at September 30, 2023 and December 31, 2022: September 30, 2023 (in thousands) Carrying Amount Quoted Significant Significant Total Write Downs Description Loans held for sale, at lower of fair value or cost $ 43,257 $ — $ — $ 43,257 $ 5,562 Loans held for investment measured for impairments using the fair value of the collateral (1) 24,146 — — 24,146 4,371 Other Real Estate Owned (2) 20,181 — — 20,181 — $ 87,584 $ — $ — $ 87,584 $ 9,933 _______________ (1) Include loans with specific reserves of $8.6 million and total write downs of $4.4 million at September 30, 2023. (2) Consists of commercial real estate property. December 31, 2022 (in thousands) Carrying Amount Quoted Significant Significant Total Write Downs Description Loans held for investment measured for impairments using the fair value of the collateral (1) $ 30,158 $ — $ — $ 30,158 $ 3,851 _______________ (1) Include loans with specific reserves of $5.2 million and total write downs of $3.9 million at December 31, 2022.
Schedule of Fair Value Measurement Inputs and Valuation Techniques	The following table presents the significant unobservable inputs (Level 3) used in the valuation of assets measured at fair value on a nonrecurring basis. Financial Instrument Unobservable Inputs Valuation Methods Discount Range Typical Discount Collateral dependent loans Discount to fair value Appraisal value, as adjusted 0-30% 6-7% Inventory 0-100% 30-50% Accounts receivables 0-100% 20-30% Equipment 0-100% 20-30% Other Real Estate Owned Discount to fair value Appraisal value, as adjusted N/A 6-7%
Schedule of Estimated Fair Value of Financial Instruments where Fair Value Differs from Carrying Value	The estimated fair value of financial instruments where fair value differs from carrying value are as follows: September 30, 2023 December 31, 2022 (in thousands) Carrying Estimated Carrying Estimated Financial assets: Debt securities held to maturity $ 230,254 $ 195,165 $ 242,101 $ 217,609 Loans 3,319,421 3,145,042 3,314,553 3,181,696 Financial liabilities: Time deposits 1,579,458 1,569,852 1,119,510 1,099,294 Advances from the FHLB 595,000 588,604 906,486 873,852 Senior notes 59,447 56,293 59,210 58,755 Subordinated notes 29,412 28,481 29,284 28,481 Junior subordinated debentures 64,178 63,237 64,178 64,182

Earnings Per Share (Tables)

Earnings Per Share (Tables)	9 Months Ended
	Sep. 30, 2023
Earnings Per Share [Abstract]
Schedule of Earnings Per Share	The following table shows the calculation of basic and diluted earnings per share: Three Months Ended September 30, Nine Months Ended September 30, (in thousands, except share data and per share amounts) 2023 2022 (1) 2023 2022 (1) Numerator: Net income before attribution of noncontrolling interest (1) $ 21,741 $ 17,490 $ 48,729 $ 40,145 Noncontrolling interest (378) (44) (884) (1,192) Net income attributable to Amerant Bancorp Inc. (1) $ 22,119 $ 17,534 $ 49,613 $ 41,337 Net income available to common stockholders (1) $ 22,119 $ 17,534 $ 49,613 $ 41,337 Denominator: Basic weighted average shares outstanding 33,489,560 33,476,418 33,537,759 33,985,856 Dilutive effect of share-based compensation awards 207,060 270,460 218,756 267,706 Diluted weighted average shares outstanding 33,696,620 33,746,878 33,756,515 34,253,562 Basic earnings per common share (1) $ 0.66 $ 0.52 $ 1.48 $ 1.22 Diluted earnings per common share (1) $ 0.66 $ 0.52 $ 1.47 $ 1.21 _______________ (1) Amounts reflect the impact of the adoption of CECL effective as of January 1, 2022. See Note 1 “Business, Basis of Presentation and Summary of Significant Accounting Policies” for additional information.

Business, Basis of Presentati_4

Business, Basis of Presentation and Summary of Significant Accounting Policies - Narrative (Details)									1 Months Ended	3 Months Ended						9 Months Ended
	Oct. 18, 2023 $ / shares	Jul. 20, 2023 $ / shares	Jul. 19, 2023 $ / shares	Apr. 19, 2023 $ / shares	Jan. 18, 2023 $ / shares	Jan. 13, 2023 USD ($)	Apr. 13, 2022 $ / shares	Jan. 19, 2022 $ / shares	Jan. 31, 2022 USD ($) shares	Sep. 30, 2023 USD ($) $ / shares shares	Jun. 30, 2023 USD ($) shares	Mar. 31, 2023 USD ($) shares	Sep. 30, 2022 USD ($) shares	Jun. 30, 2022 USD ($) shares	Mar. 31, 2022 USD ($) shares	Sep. 30, 2023 USD ($) subsidiary $ / shares shares	Sep. 30, 2022 USD ($) $ / shares shares	Aug. 03, 2023 $ / shares	Dec. 31, 2022 USD ($) $ / shares	Dec. 19, 2022 USD ($)
Class of Stock [Line Items]
Number of subsidiaries | subsidiary																3
Professional and other services fees										$ 5,325,000			$ 5,045,000			$ 20,368,000	$ 15,918,000
Repurchase of common stock - Class A																(4,933,000)	(72,060,000)
Dividends declared (in dollars per share) | $ / shares		$ 0.09	$ 0.09	$ 0.09	$ 0.09		$ 0.09	$ 0.09
Goodwill										20,525,000						20,525,000			$ 19,506,000
Impairment on investment carried at cost																1,963,000	0
Employee Stock
Class of Stock [Line Items]
Share-based compensation expense										100,000			300,000			400,000	300,000
F&B Acquisition Group LLC
Class of Stock [Line Items]
Payments to acquire businesses						$ 2,000,000
Loans held for sale at fair value						1,000,000
Goodwill						$ 1,000,000
Subsequent Event
Class of Stock [Line Items]
Dividends declared (in dollars per share) | $ / shares	$ 0.09
Multi-Year Outsourcing Agreement
Class of Stock [Line Items]
Severance expense										500,000			400,000			2,900,000	1,800,000
Professional and other services fees													1,100,000				2,400,000
Impairments of operating lease ROU asset																	1,600,000
Contract Termination | Multi-Year Outsourcing Agreement
Class of Stock [Line Items]
Restructuring costs										0			$ 300,000			1,600,000	$ 7,100,000
Facility Closing | Multi-Year Outsourcing Agreement
Class of Stock [Line Items]
Restructuring costs										300,000						2,300,000
Professional and other services fees										0						4,800,000
Capitalized computer software, impairments										$ 0						$ 1,400,000
Class A Common Stock
Class of Stock [Line Items]
Common stock, par value (in dollars per share) | $ / shares										$ 0.10						$ 0.10		$ 0.10	$ 0.10
Repurchase of common stock										$ 2,708,000	$ 1,659,000	$ 566,000		$ 17,240,000	$ 54,820,000
Treasury stock (in shares) | shares										0			0			0	0
Class A Common Stock | Common Stock
Class of Stock [Line Items]
Repurchase of Class A common stock (in shares) | shares										(142,188)	(95,262)	(22,403)		(611,525)	(1,643,480)	(259,853)
Treasury stock acquired (in dollars per share) | $ / shares										$ 19.05						$ 18.98
Repurchase of common stock - Class A																$ (4,900,000)
Stock issued for employee stock purchase plan (in shares) | shares																30,557
Class A Common Stock | Treasury Stock
Class of Stock [Line Items]
Repurchase of common stock										$ (2,708,000)	$ 1,659,000	$ 566,000		$ 17,240,000	$ 54,820,000
Class A Common Stock | 2023 Class A Common Stock Repurchase Program Member
Class of Stock [Line Items]
Stock repurchase program, authorized amount																				$ 25,000,000
Class A Common Stock | 2021 Class A Common Stock Repurchase Program
Class of Stock [Line Items]
Stock repurchase program, authorized amount									$ 50,000,000
Treasury stock, acquired (in shares) | shares									652,118
Treasury stock acquired									$ 22,100,000
Class A Common Stock | 2022 Class A Common Stock Repurchase Program
Class of Stock [Line Items]
Stock repurchase program, authorized amount									$ 50,000,000
Treasury stock acquired (in dollars per share) | $ / shares																	$ 31.14
Treasury stock, acquired (in shares) | shares													0				1,602,887
Treasury stock acquired																$ 49,900,000
Amerant Bank, N.A
Class of Stock [Line Items]
Ownership percentage of subsidiary										100%						100%

Business, Basis of Presentati_5

Business, Basis of Presentation and Summary of Significant Accounting Policies - Dividends Declared (Details) - USD ($) $ / shares in Units, $ in Thousands													3 Months Ended
	Aug. 31, 2023	Jul. 20, 2023	Jul. 19, 2023	May 31, 2023	Apr. 19, 2023	Feb. 28, 2023	Jan. 18, 2023	Aug. 31, 2022	May 31, 2022	Apr. 13, 2022	Feb. 28, 2022	Jan. 19, 2022	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022
Accounting Policies [Abstract]
Dividend Per Share (in dollars per share)		$ 0.09	$ 0.09		$ 0.09		$ 0.09			$ 0.09		$ 0.09
Dividend Amount	$ 3,000			$ 3,000		$ 3,000		$ 3,000	$ 3,000		$ 3,200		$ 3,015	$ 3,023	$ 3,017	$ 3,013	$ 3,049	$ 3,154

Business, Basis of Presentati_6

Business, Basis of Presentation and Summary of Significant Accounting Policies - Schedule of Impact of Adopting CECL (Consolidated Balance Sheet) (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022	Sep. 30, 2022
Assets
Deferred tax assets, net	$ 63,501	$ 48,703
Stockholder’s Equity
Retained earnings	$ 630,933	$ 590,375
As Reported
Assets
Allowance for credit losses			$ 53,711
Deferred tax assets, net			45,791
Liabilities
Accounts payable, accrued liabilities and other liabilities			181,693
Stockholder’s Equity
Retained earnings			588,495
As Recast
Assets
Allowance for credit losses			76,473
Deferred tax assets, net			51,644
Liabilities
Accounts payable, accrued liabilities and other liabilities			181,863
Stockholder’s Equity
Retained earnings			571,416
Changes
Assets
Allowance for credit losses			22,762
Deferred tax assets, net			5,853
Liabilities
Accounts payable, accrued liabilities and other liabilities			170
Stockholder’s Equity
Retained earnings			$ (17,079)

Business, Basis of Presentati_7

Business, Basis of Presentation and Summary of Significant Accounting Policies - Schedule of Impact of Adopting CECL (Consolidated Statements of Operations) (Details) - USD ($) $ / shares in Units, $ in Thousands							3 Months Ended							9 Months Ended
	Jul. 20, 2023	Jul. 19, 2023	Apr. 19, 2023	Jan. 18, 2023	Apr. 13, 2022	Jan. 19, 2022	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Total interest income							$ 139,383				$ 89,137			$ 403,010	$ 225,402
Total interest expense							60,806				19,240			158,223	40,915
Net interest income							78,577				69,897			244,787	184,487
Provision for (reversal of) credit losses							8,000				7,314			48,777	(2,912)
Net interest income after provision for (reversal of) credit losses							70,577				62,583			196,010	187,399
Total noninterest income							21,921				15,956			67,883	42,912
Total noninterest expense							64,420				56,113			201,653	179,172
Income before income tax expense							28,078				22,426			62,240	51,139
Income tax expense							(6,337)				(4,936)			(13,511)	(10,994)
Net income before attribution of noncontrolling interest							21,741				17,490			48,729	40,145
Noncontrolling interest							(378)	$ (262)	$ (244)		(44)	$ (72)	$ (1,076)	(884)	(1,192)
Net income attributable to Amerant Bancorp Inc.							$ 22,119	$ 7,308	$ 20,186		$ 17,534	$ 8,424	$ 15,379	$ 49,613	$ 41,337
Basic earnings per common share (in dollars per share)							$ 0.66				$ 0.52			$ 1.48	$ 1.22
Diluted earnings per common share (in dollars per share)							$ 0.66				$ 0.52			$ 1.47	$ 1.21
Dividend Per Share (in dollars per share)	$ 0.09	$ 0.09	$ 0.09	$ 0.09	$ 0.09	$ 0.09
Provision for credit losses										$ 20,900
Cumulative Effect, Period of Adoption, Adjusted Balance
Provision for credit losses										$ 11,100
As Reported
Total interest income											$ 89,137				$ 225,402
Total interest expense											19,240				40,915
Net interest income											69,897				184,487
Provision for (reversal of) credit losses											3,000				(7,000)
Net interest income after provision for (reversal of) credit losses											66,897				191,487
Total noninterest income											15,956				42,912
Total noninterest expense											56,113				179,172
Income before income tax expense											26,740				55,227
Income tax expense											(5,864)				(11,875)
Net income before attribution of noncontrolling interest											20,876				43,352
Noncontrolling interest											(44)				(1,192)
Net income attributable to Amerant Bancorp Inc.											$ 20,920				$ 44,544
Basic earnings per common share (in dollars per share)											$ 0.62				$ 1.31
Diluted earnings per common share (in dollars per share)											0.62				1.30
Dividend Per Share (in dollars per share)											$ 0.09				$ 0.27
As Recast
Total interest income											$ 89,137				$ 225,402
Total interest expense											19,240				40,915
Net interest income											69,897				184,487
Provision for (reversal of) credit losses											7,314				(2,912)
Net interest income after provision for (reversal of) credit losses											62,583				187,399
Total noninterest income											15,956				42,912
Total noninterest expense											56,113				179,172
Income before income tax expense											22,426				51,139
Income tax expense											(4,936)				(10,994)
Net income before attribution of noncontrolling interest											17,490				40,145
Noncontrolling interest											(44)				(1,192)
Net income attributable to Amerant Bancorp Inc.											$ 17,534				$ 41,337
Basic earnings per common share (in dollars per share)											$ 0.52				$ 1.22
Diluted earnings per common share (in dollars per share)											0.52				1.21
Dividend Per Share (in dollars per share)											$ 0.09				$ 0.27
Changes
Total interest income											$ 0				$ 0
Total interest expense											0				0
Net interest income											0				0
Provision for (reversal of) credit losses											4,314				4,088
Net interest income after provision for (reversal of) credit losses											(4,314)				(4,088)
Total noninterest income											0				0
Total noninterest expense											0				0
Income before income tax expense											(4,314)				(4,088)
Income tax expense											928				881
Net income before attribution of noncontrolling interest											(3,386)				(3,207)
Noncontrolling interest											0				0
Net income attributable to Amerant Bancorp Inc.											$ (3,386)				$ (3,207)
Basic earnings per common share (in dollars per share)											$ (0.10)				$ (0.09)
Diluted earnings per common share (in dollars per share)											(0.10)				(0.09)
Dividend Per Share (in dollars per share)											$ 0				$ 0

Interest Earning Deposits wit_2

Interest Earning Deposits with Banks, Other Short-Term Investments and Restricted Cash (Details) - USD ($)	Sep. 30, 2023	Dec. 31, 2022
Capital Requirements on Foreign Financial Institutions [Line Items]
Interest earning deposits with banks	$ 202,946,000	$ 228,955,000
Average interest rate on deposits with banks	5.58%	1.79%
Other short-term investments	$ 6,024,000	$ 0
Debt securities, available-for-sale, weighted average yield	4.65%
Restricted cash	$ 51,837,000	42,160,000
Obligation to repay	51,200,000	$ 41,600,000
Letter of Credit
Capital Requirements on Foreign Financial Institutions [Line Items]
Restricted cash	$ 600,000

Securities - Schedule of Availa

Securities - Schedule of Available for Sale Securities from Amortized Cost to Fair Value (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 1,178,431	$ 1,169,578
Gross unrealized gains	92	1,024
Gross unrealized losses	(144,726)	(112,981)
Allowance for Credit Losses	0	0
Estimated Fair Value	1,033,797	1,057,621
Debt securities available for sale accrued interest	6,300	5,600
U.S. government-sponsored enterprise debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	473,047	480,359
Gross unrealized gains	26	981
Gross unrealized losses	(58,438)	(43,666)
Allowance for Credit Losses	0	0
Estimated Fair Value	414,635	437,674
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	285,370	306,898
Gross unrealized gains	0	1
Gross unrealized losses	(32,792)	(26,199)
Allowance for Credit Losses	0	0
Estimated Fair Value	252,578	280,700
U.S. government agency debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	409,306	373,593
Gross unrealized gains	61	42
Gross unrealized losses	(53,380)	(42,814)
Allowance for Credit Losses	0	0
Estimated Fair Value	355,987	330,821
Collateralized loan obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	5,000	5,000
Gross unrealized gains	5	0
Gross unrealized losses	0	(226)
Allowance for Credit Losses	0	0
Estimated Fair Value	5,005	4,774
Municipal bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,732	1,731
Gross unrealized gains	0	0
Gross unrealized losses	(92)	(75)
Allowance for Credit Losses	0	0
Estimated Fair Value	1,640	1,656
U.S. treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	3,976	1,997
Gross unrealized gains	0	0
Gross unrealized losses	(24)	(1)
Allowance for Credit Losses	0	0
Estimated Fair Value	3,952	1,996
Residential Mortgage Backed Securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	769,400	743,000
Estimated Fair Value	668,700	666,500
Commercial Mortgage Backed Securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	101,100	91,000
Estimated Fair Value	$ 88,800	$ 80,900

Securities - Narrative (Details

Securities - Narrative (Details)	1 Months Ended	3 Months Ended			9 Months Ended		12 Months Ended
	May 31, 2023 USD ($)	Sep. 30, 2023 USD ($)	Mar. 31, 2023 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($)	Sep. 30, 2022 USD ($)	Dec. 31, 2022 USD ($) contract
Debt Securities, Available-for-sale [Line Items]
Securities		$ 1,314,367,000			$ 1,314,367,000		$ 1,366,680,000
Debt securities available for sale, at fair value		1,033,797,000			1,033,797,000		1,057,621,000
Allowance for credit losses		0			0		0
Total unrealized loss		1,008,906,000			1,008,906,000		1,002,437,000
Equity securities, unrealized loss		100,000			100,000
Pre-tax loss		0		$ 0	10,760,000	$ 0
Equity securities, original costs		2,500,000			2,500,000
Equity securities with readily determinable fair value not held for trading		2,438,000			2,438,000		11,383,000
Unrealized gains				$ 1,500,000		$ 400,000
Foreign Corporate Debt Securities
Debt Securities, Available-for-sale [Line Items]
Debt securities available for sale, at fair value		0			0		0
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Debt securities available for sale, at fair value		252,578,000			252,578,000		280,700,000
Allowance for credit losses		0			0		0
Total unrealized loss		252,578,000			252,578,000		275,706,000
Proceeds from sale of debt securities, available-for-sale	$ 800,000
Pre-tax loss	$ 1,200,000
Investment-Grade
Debt Securities, Available-for-sale [Line Items]
Debt securities available for sale, at fair value		182,200,000			182,200,000		206,300,000
Unrealized loss					22,900,000		16,600,000
Equity Securities
Debt Securities, Available-for-sale [Line Items]
Debt securities available for sale, at fair value			$ 11,200,000
Realized loss			$ 200,000
Pledged as Collateral
Debt Securities, Available-for-sale [Line Items]
Securities pledged as collateral		159,500,000			159,500,000		314,500,000
Foreign Corporate Debt Securities
Debt Securities, Available-for-sale [Line Items]
Securities		9,800,000			9,800,000		9,700,000
US Government
Debt Securities, Available-for-sale [Line Items]
Allowance for credit losses		0			0		0
Investment-Grade
Debt Securities, Available-for-sale [Line Items]
Securities		229,700,000			229,700,000		258,800,000
Allowance for credit losses		0			0		0
Total unrealized loss		28,700,000			28,700,000		24,100,000
Non-Investment-Grade
Debt Securities, Available-for-sale [Line Items]
Securities		22,900,000			22,900,000		16,900,000
Total unrealized loss		$ 4,100,000			4,100,000		2,100,000
Signature Bond
Debt Securities, Available-for-sale [Line Items]
Total unrealized loss							$ 9,100,000
Number of instruments held-for-sale | contract							1
Equity securities, unrealized loss							$ 900,000
Realized loss					$ 9,500,000
Mutual funds
Debt Securities, Available-for-sale [Line Items]
Equity securities, original costs							$ 12,700,000

Securities - Schedule of Realiz

Securities - Schedule of Realized Gains (Losses) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Investments, Debt and Equity Securities [Abstract]
Proceeds from sales, redemptions and calls of debt securities available for sale	$ 0	$ 12,154	$ 1,240	$ 26,312
Gross realized gains	0	22	0	71
Gross realized losses	0	0	(10,760)	0
Realized (loss) gain, net	$ 0	$ 22	$ (10,760)	$ 71

Securities - Schedule of Avai_2

Securities - Schedule of Available for Sale Securities with Unrealized Losses (Details) $ in Thousands	Sep. 30, 2023 USD ($) contract	Dec. 31, 2022 USD ($) contract
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, number of securities | contract	90	397
Less than 12 months, estimated fair value	$ 140,277	$ 592,593
Less than 12 months, unrealized loss	$ (4,701)	$ (40,967)
12 months or more, number of securities | contract	560	226
12 months or more, estimated fair value	$ 868,629	$ 409,844
12 months or more, unrealized loss	(140,025)	(72,014)
Total, estimated fair value	1,008,906	1,002,437
Total, unrealized loss	$ (144,726)	$ (112,981)
U.S. government-sponsored enterprise debt securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, number of securities | contract	52	250
Less than 12 months, estimated fair value	$ 79,491	$ 292,595
Less than 12 months, unrealized loss	$ (3,063)	$ (22,315)
12 months or more, number of securities | contract	335	108
12 months or more, estimated fair value	$ 333,171	$ 96,986
12 months or more, unrealized loss	(55,375)	(21,351)
Total, estimated fair value	412,662	389,581
Total, unrealized loss	$ (58,438)	$ (43,666)
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, number of securities | contract	6	50
Less than 12 months, estimated fair value	$ 13,242	$ 203,516
Less than 12 months, unrealized loss	$ (673)	$ (13,374)
12 months or more, number of securities | contract	55	14
12 months or more, estimated fair value	$ 239,336	$ 72,190
12 months or more, unrealized loss	(32,119)	(12,825)
Total, estimated fair value	252,578	275,706
Total, unrealized loss	$ (32,792)	$ (26,199)
U.S. government agency debt securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, number of securities | contract	30	92
Less than 12 months, estimated fair value	$ 43,592	$ 88,056
Less than 12 months, unrealized loss	$ (941)	$ (4,976)
12 months or more, number of securities | contract	167	104
12 months or more, estimated fair value	$ 294,482	$ 240,668
12 months or more, unrealized loss	(52,439)	(37,838)
Total, estimated fair value	338,074	328,724
Total, unrealized loss	$ (53,380)	$ (42,814)
Municipal bonds
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, number of securities | contract	0	3
Less than 12 months, estimated fair value	$ 0	$ 1,656
Less than 12 months, unrealized loss	$ 0	$ (75)
12 months or more, number of securities | contract	3	0
12 months or more, estimated fair value	$ 1,640	$ 0
12 months or more, unrealized loss	(92)	0
Total, estimated fair value	1,640	1,656
Total, unrealized loss	$ (92)	$ (75)
U.S. treasury securities
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, number of securities | contract	2	1
Less than 12 months, estimated fair value	$ 3,952	$ 1,996
Less than 12 months, unrealized loss	$ (24)	$ (1)
12 months or more, number of securities | contract	0	0
12 months or more, estimated fair value	$ 0	$ 0
12 months or more, unrealized loss	0	0
Total, estimated fair value	3,952	1,996
Total, unrealized loss	$ (24)	$ (1)
Collateralized loan obligations
Debt Securities, Available-for-sale [Line Items]
Less than 12 months, number of securities | contract		1
Less than 12 months, estimated fair value		$ 4,774
Less than 12 months, unrealized loss		$ (226)
12 months or more, number of securities | contract		0
12 months or more, estimated fair value		$ 0
12 months or more, unrealized loss		0
Total, estimated fair value		4,774
Total, unrealized loss		$ (226)

Securities - Schedule of Held t

Securities - Schedule of Held to Maturity Securities - Amortized Cost (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 230,254	$ 242,101
Gross unrealized gains	0	109
Gross unrealized losses	(35,089)	(24,601)
Estimated Fair Value	195,165	217,609
Allowance for Credit Losses	0	0
Debt securities held to maturity accrued interest	700	800
U.S. government agency debt securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	65,002	68,556
Gross unrealized gains	0	109
Gross unrealized losses	(10,338)	(7,778)
Estimated Fair Value	54,664	60,887
Allowance for Credit Losses	0	0
U.S. government-sponsored enterprise debt securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	165,252	173,545
Gross unrealized gains	0	0
Gross unrealized losses	(24,751)	(16,823)
Estimated Fair Value	140,501	156,722
Allowance for Credit Losses	0	0
Residential Mortgage Backed Securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	202,600	213,900
Estimated Fair Value	170,600	191,400
Commercial Mortgage Backed Securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	27,600	28,200
Estimated Fair Value	$ 24,500	$ 26,200

Securities - Schedule of Held_2

Securities - Schedule of Held to Maturity Securities - Unrealized Losses (Details) $ in Thousands	Sep. 30, 2023 USD ($) contract	Dec. 31, 2022 USD ($) contract
Number of Securities
Less than 12 months, number of securities | contract	1	31
12 months or more, number of securities | contract	46	15
Estimated Fair Value
less than 12 months	$ 9,425	$ 142,033
12 months or more	185,740	65,444
Total	195,165	207,477
Unrealized Loss
Less than 12 months	(500)	(9,085)
12 months or more	(34,589)	(15,516)
Total	$ (35,089)	$ (24,601)
U.S. government agency debt securities
Number of Securities
Less than 12 months, number of securities | contract	1	0
12 months or more, number of securities | contract	12	12
Estimated Fair Value
less than 12 months	$ 9,425	$ 0
12 months or more	45,239	50,755
Total	54,664	50,755
Unrealized Loss
Less than 12 months	(500)	0
12 months or more	(9,838)	(7,778)
Total	$ (10,338)	$ (7,778)
U.S. government-sponsored enterprise debt securities
Number of Securities
Less than 12 months, number of securities | contract	0	31
12 months or more, number of securities | contract	34	3
Estimated Fair Value
less than 12 months	$ 0	$ 142,033
12 months or more	140,501	14,689
Total	140,501	156,722
Unrealized Loss
Less than 12 months	0	(9,085)
12 months or more	(24,751)	(7,738)
Total	$ (24,751)	$ (16,823)

Securities - Schedule of Contra

Securities - Schedule of Contractual Maturities of Securities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Available for Sale, Amortized Cost
Within 1 year	$ 2,705
After 1 year through 5 years	125,842
After 5 years through 10 years	228,020
After 10 years	821,864
Amortized Cost	1,178,431	$ 1,169,578
Available for Sale, Estimated Fair Value
Within 1 year	2,682
After 1 year through 5 years	118,742
After 5 years through 10 years	199,276
After 10 years	713,097
Estimated Fair Value	1,033,797	1,057,621
Held to Maturity, Amortized Cost
Within 1 year	0
After 1 year through 5 years	6,603
After 5 years through 10 years	14,634
After 10 years	209,017
Amortized Cost	230,254	242,101
Held to Maturity, Estimated Fair Value
Within 1 year	0
After 1 year through 5 years	3,247
After 5 years through 10 years	13,358
After 10 years	178,560
Estimated Fair Value	$ 195,165	$ 217,609

Loans - Schedule of Loan Portfo

Loans - Schedule of Loan Portfolio by Classes (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 7,073,387	$ 6,857,194
Real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	5,168,278	4,858,208
Real estate loans | Non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,593,571	1,615,716
Real estate loans | Multi-family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	771,654	820,023
Real estate loans | Land development and construction loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	301,938	273,174
Real estate loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	2,667,163	2,708,913
Real estate loans | Single-family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,371,194	1,102,845
Real estate loans | Owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,129,921	1,046,450
Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,452,759	1,381,234
Commercial loans | Equipment Financing
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	49,300	45,300
Loans to financial institutions and acceptances
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	13,353	13,292
Consumer loans and overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 438,997	$ 604,460

Loans - Narrative (Details)

Loans - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 7,073,387,000		$ 7,073,387,000		$ 6,857,194,000
Syndication facilities included in loans	312,000,000		312,000,000		367,000,000
Collateral of cash, cash equivalents or other financial instruments	6,600,000		6,600,000		6,300,000
Interest income on nonaccrual loans	0	$ 0	0	$ 0
Interest receivable	33,000,000		33,000,000		27,700,000
Reversal of interest receivable	100,000		500,000
International
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	103,300,000		103,300,000		99,200,000
Consumer loans and overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	438,997,000		438,997,000		604,460,000
Reversal of interest receivable		300,000
Real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	5,168,278,000		5,168,278,000		4,858,208,000
Real estate loans | Indirect Consumer Loans Purchased
Accounts, Notes, Loans and Financing Receivable [Line Items]
Payments to acquire loans held-for-investment		91,000,000		345,000,000
Real estate loans | Single-family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,371,194,000		1,371,194,000		1,102,845,000
Payments to acquire loans held-for-investment	10,300,000	$ 110,300,000	17,500,000	132,100,000
Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,452,759,000		1,452,759,000		1,381,234,000
Commercial loans | Indirect Consumer Loans Purchased
Accounts, Notes, Loans and Financing Receivable [Line Items]
Payments to acquire loans held-for-investment	0		0
Indirect Consumer Loans Purchased | Consumer loans and overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	254,700,000		254,700,000		433,300,000
Under Non-Accrual Status
Accounts, Notes, Loans and Financing Receivable [Line Items]
Reversal of interest receivable				600,000
Under Non-Accrual Status | Consumer loans and overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Reversal of interest receivable				500,000
Under Non-Accrual Status | Real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Reversal of interest receivable				$ 100,000
Pledged as Collateral
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 2,500,000,000		$ 2,500,000,000		$ 1,200,000,000

Loans - Schedule of Loan Port_2

Loans - Schedule of Loan Portfolio Delinquencies (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	$ 7,073,387	$ 6,857,194
Current
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	7,026,877	6,833,777
Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	46,510	23,417
30-59 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	7,848	8,661
60-89 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	9,841	6,943
Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	28,821	7,813
Real estate loans
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	5,168,278	4,858,208
Real estate loans | Current
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	5,137,165	4,845,522
Real estate loans | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	31,113	12,686
Real estate loans | 30-59 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	1,628	4,699
Real estate loans | 60-89 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	3,074	6,406
Real estate loans | Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	26,411	1,581
Real estate loans | Non-owner occupied
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	1,593,571	1,615,716
Real estate loans | Non-owner occupied | Current
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	1,593,571	1,615,716
Real estate loans | Non-owner occupied | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	0	0
Real estate loans | Non-owner occupied | 30-59 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	0	0
Real estate loans | Non-owner occupied | 60-89 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	0	0
Real estate loans | Non-owner occupied | Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	0	0
Real estate loans | Multi-family residential
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	771,654	820,023
Real estate loans | Multi-family residential | Current
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	748,075	818,394
Real estate loans | Multi-family residential | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	23,579	1,629
Real estate loans | Multi-family residential | 30-59 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	235	1,387
Real estate loans | Multi-family residential | 60-89 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	0	242
Real estate loans | Multi-family residential | Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	23,344	0
Real estate loans | Land development and construction loans
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	301,938	273,174
Real estate loans | Land development and construction loans | Current
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	301,938	273,174
Real estate loans | Land development and construction loans | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	0	0
Real estate loans | Land development and construction loans | 30-59 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	0	0
Real estate loans | Land development and construction loans | 60-89 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	0	0
Real estate loans | Land development and construction loans | Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	0	0
Real estate loans | Commercial real estate
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	2,667,163	2,708,913
Real estate loans | Commercial real estate | Current
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	2,643,584	2,707,284
Real estate loans | Commercial real estate | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	23,579	1,629
Real estate loans | Commercial real estate | 30-59 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	235	1,387
Real estate loans | Commercial real estate | 60-89 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	0	242
Real estate loans | Commercial real estate | Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	23,344	0
Real estate loans | Single-family residential
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	1,371,194	1,102,845
Real estate loans | Single-family residential | Current
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	1,369,078	1,098,310
Real estate loans | Single-family residential | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	2,116	4,535
Real estate loans | Single-family residential | 30-59 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	0	3,140
Real estate loans | Single-family residential | 60-89 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	1,845	150
Real estate loans | Single-family residential | Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	271	1,245
Real estate loans | Owner occupied
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	1,129,921	1,046,450
Real estate loans | Owner occupied | Current
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	1,124,503	1,039,928
Real estate loans | Owner occupied | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	5,418	6,522
Real estate loans | Owner occupied | 30-59 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	1,393	172
Real estate loans | Owner occupied | 60-89 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	1,229	6,014
Real estate loans | Owner occupied | Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	2,796	336
Commercial loans
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	1,452,759	1,381,234
Commercial loans | Current
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	1,442,915	1,373,042
Commercial loans | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	9,844	8,192
Commercial loans | 30-59 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	3,225	1,523
Commercial loans | 60-89 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	4,209	475
Commercial loans | Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	2,410	6,194
Loans to financial institutions and acceptances
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	13,353	13,292
Loans to financial institutions and acceptances | Current
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	13,353	13,292
Loans to financial institutions and acceptances | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	0	0
Loans to financial institutions and acceptances | 30-59 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	0	0
Loans to financial institutions and acceptances | 60-89 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	0	0
Loans to financial institutions and acceptances | Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	0	0
Consumer loans and overdrafts
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	438,997	604,460
Consumer loans and overdrafts | Current
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	433,444	601,921
Consumer loans and overdrafts | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	5,553	2,539
Consumer loans and overdrafts | 30-59 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	2,995	2,439
Consumer loans and overdrafts | 60-89 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	2,558	62
Consumer loans and overdrafts | Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	$ 0	$ 38

Loans - Schedule of Nonaccrual

Loans - Schedule of Nonaccrual Status and Loans Past Due (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans With No Related Allowance	$ 3,754	$ 26,475
Nonaccrual Loans With Related Allowance	28,937	10,653
Total Nonaccrual Loans	32,691	37,128
Loans Past Due Over 90 Days and Still Accruing	504	471
Real estate loans
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans With No Related Allowance	2,794	25,993
Nonaccrual Loans With Related Allowance	25,183	1,860
Total Nonaccrual Loans	27,977	27,853
Loans Past Due Over 90 Days and Still Accruing	0	253
Commercial loans
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans With No Related Allowance	959	482
Nonaccrual Loans With Related Allowance	3,754	8,789
Total Nonaccrual Loans	4,713	9,271
Loans Past Due Over 90 Days and Still Accruing	504	183
Consumer loans and overdrafts
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans With No Related Allowance	1	0
Nonaccrual Loans With Related Allowance	0	4
Total Nonaccrual Loans	1	4
Loans Past Due Over 90 Days and Still Accruing	0	35
Non-owner occupied | Real estate loans
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans With No Related Allowance	0	20,057
Nonaccrual Loans With Related Allowance	0	0
Total Nonaccrual Loans	0	20,057
Loans Past Due Over 90 Days and Still Accruing	0	0
Multi-family residential | Real estate loans
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans With No Related Allowance	0	0
Nonaccrual Loans With Related Allowance	23,344	0
Total Nonaccrual Loans	23,344	0
Loans Past Due Over 90 Days and Still Accruing	0	0
Commercial real estate | Real estate loans
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans With No Related Allowance	0	20,057
Nonaccrual Loans With Related Allowance	23,344	0
Total Nonaccrual Loans	23,344	20,057
Loans Past Due Over 90 Days and Still Accruing	0	0
Single-family residential | Real estate loans
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans With No Related Allowance	843	0
Nonaccrual Loans With Related Allowance	1,690	1,526
Total Nonaccrual Loans	2,533	1,526
Loans Past Due Over 90 Days and Still Accruing	0	253
Owner occupied | Real estate loans
Financing Receivable, Past Due [Line Items]
Nonaccrual Loans With No Related Allowance	1,951	5,936
Nonaccrual Loans With Related Allowance	149	334
Total Nonaccrual Loans	2,100	6,270
Loans Past Due Over 90 Days and Still Accruing	$ 0	$ 0

Loans - Schedule of Loans Held

Loans - Schedule of Loans Held for Sale (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for sale at the lower of fair value or cost	$ 43,257		$ 0
Mortgage loans held for sale (at fair value) transferred to loans held for investment	95,674	$ 51,640
Real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for sale at the lower of fair value or cost	43,256		0
Total loans held for sale at fair value	25,953		62,438
Total loans held for sale	69,209		62,438
Mortgage loans held for sale (at fair value) transferred to loans held for investment	5,600
Real estate loans | Non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Non-owner occupied	43,256		0
Real estate loans | Land development and construction loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for sale at fair value	6,931		9,424
Mortgage loans held for sale (at fair value) transferred to loans held for investment	14,000
Real estate loans | Single-family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for sale at fair value	19,022		$ 53,014
Mortgage loans held for sale (at fair value) transferred to loans held for investment	$ 81,000

Allowance for Credit Losses - S

Allowance for Credit Losses - Schedule of Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Allowance for Credit Losses
Balance at beginning of the period	$ 105,956	$ 70,475	$ 83,500	$ 69,899
(Reversal of ) provision for credit losses - loans	7,400		48,177
(Reversal of ) provision for credit losses - loans	8,000	7,314	48,777	(2,912)
Loans charged-off	(15,819)	(1,811)	(39,233)	(11,653)
Recoveries	1,236	495	6,329	2,465
Balance at end of the period	98,773	76,473	98,773	76,473
Cumulative effect of adoption of accounting principle
Allowance for Credit Losses
Balance at beginning of the period				18,674
Real Estate
Allowance for Credit Losses
Balance at beginning of the period	42,238	20,459	25,237	17,952
(Reversal of ) provision for credit losses - loans	(3,067)		13,655
(Reversal of ) provision for credit losses - loans		2,869		(12,056)
Loans charged-off	(90)	0	(90)	0
Recoveries	10	12	289	26
Balance at end of the period	39,091	23,340	39,091	23,340
Real Estate | Cumulative effect of adoption of accounting principle
Allowance for Credit Losses
Balance at beginning of the period				17,418
Commercial
Allowance for Credit Losses
Balance at beginning of the period	36,626	21,152	25,888	38,979
(Reversal of ) provision for credit losses - loans	4,852		20,639
(Reversal of ) provision for credit losses - loans		927		(2,435)
Loans charged-off	(9,288)	(99)	(18,715)	(7,979)
Recoveries	736	443	5,114	2,139
Balance at end of the period	32,926	22,423	32,926	22,423
Commercial | Cumulative effect of adoption of accounting principle
Allowance for Credit Losses
Balance at beginning of the period				(8,281)
Financial Institutions
Allowance for Credit Losses
Balance at beginning of the period	0	0	0	42
(Reversal of ) provision for credit losses - loans	0		0
(Reversal of ) provision for credit losses - loans		0		0
Loans charged-off	0	0	0	0
Recoveries	0	0	0	0
Balance at end of the period	0	0	0	0
Financial Institutions | Cumulative effect of adoption of accounting principle
Allowance for Credit Losses
Balance at beginning of the period				(42)
Consumer and Others
Allowance for Credit Losses
Balance at beginning of the period	27,092	28,864	32,375	12,926
(Reversal of ) provision for credit losses - loans	5,615		13,883
(Reversal of ) provision for credit losses - loans		3,518		11,579
Loans charged-off	(6,441)	(1,712)	(20,428)	(3,674)
Recoveries	490	40	926	300
Balance at end of the period	$ 26,756	$ 30,710	$ 26,756	30,710
Consumer and Others | Cumulative effect of adoption of accounting principle
Allowance for Credit Losses
Balance at beginning of the period				$ 9,579

Allowance for Credit Losses - N

Allowance for Credit Losses - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2023	Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
Allowance for credit loss, increase		$ 15.3
Allowance for credit loss, increase, percent		18.30%
Allowance for credit loss, percent of total loans	1.40%	1.40%	1.22%
Additional reserve requirements for charge-offs and credit quality	$ 7.6	$ 36.3
Additional reserve requirements due to loan composition and volume changes	1.4
Updated economic factors	0.4	9.6
Release due to recoveries	$ 1.2
Account for loan growth		2.3
Commercial Real Estate And Commercial Portfolio Segments Member
Financing Receivable, Credit Quality Indicator [Line Items]
Internal risk ratings, loan balance, minimum		3
Real estate loans | Single-family residential
Financing Receivable, Credit Quality Indicator [Line Items]
Internal risk ratings, loan balance, minimum		$ 3
Real estate loans | Owner occupied | Commercial Real Estate | Collateralized Loan Obligations
Financing Receivable, Credit Quality Indicator [Line Items]
Decrease in weighted-average loan-to-values		2%

Allowance for Credit Losses -_2

Allowance for Credit Losses - Schedule of Recorded Investment of Loan Sales (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Financing Receivable, Impaired [Line Items]
Amount of loan sales	$ 27,409	$ 6,483	$ 41,871	$ 19,362
Real Estate
Financing Receivable, Impaired [Line Items]
Amount of loan sales	20,500	0	34,075	11,566
Commercial
Financing Receivable, Impaired [Line Items]
Amount of loan sales	6,909	6,483	7,796	6,483
Financial Institutions
Financing Receivable, Impaired [Line Items]
Amount of loan sales	0	0	0	0
Consumer and Others
Financing Receivable, Impaired [Line Items]
Amount of loan sales	$ 0	$ 0	$ 0	$ 1,313

Allowance for Credit Losses -_3

Allowance for Credit Losses - Schedule of TDR Loans (Details)	3 Months Ended	9 Months Ended
	Sep. 30, 2022 contract	Sep. 30, 2022 contract	Sep. 30, 2023 USD ($)
Receivables [Abstract]
Troubled debt restructuring | $			$ 0
Troubled debt restructuring, number of contracts	0	0
TDRs subsequently defaulted	0	0

Allowance for Credit Losses -_4

Allowance for Credit Losses - Schedule of Master Risk Categories and Associated Loan Risk Ratings (Details)	Sep. 30, 2023
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loan Risk Rating	3
Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loan Risk Rating	2
Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Loan Risk Rating	1
Minimum | Nonclassified
Financing Receivable, Credit Quality Indicator [Line Items]
Loan Risk Rating	4
Minimum | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Loan Risk Rating	1
Maximum | Nonclassified
Financing Receivable, Credit Quality Indicator [Line Items]
Loan Risk Rating	10
Maximum | Classified
Financing Receivable, Credit Quality Indicator [Line Items]
Loan Risk Rating	3

Allowance for Credit Losses -_5

Allowance for Credit Losses - Schedule of Loans Held For Investment by Credit Quality Indicators (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Financing Receivable, Credit Quality Indicator [Line Items]
2023	$ 911,166	$ 1,751,231
2022	1,497,417	1,660,779
2021	1,490,143	227,850
2020	204,518	367,450
2019	323,714	182,525
Prior	861,220	762,176
Revolving Loans Amortized Cost Basis	1,785,209	1,905,183
Total	7,073,387	6,857,194
Real estate loans
Financing Receivable, Credit Quality Indicator [Line Items]
Total	5,168,278	4,858,208
Real estate loans | Non-owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
2023	99,056	177,852
2022	191,221	637,015
2021	597,265	34,525
2020	35,803	112,054
2019	90,311	82,385
Prior	402,213	350,552
Revolving Loans Amortized Cost Basis	177,702	221,333
Total	1,593,571	1,615,716
Real estate loans | Non-owner occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2023	99,056	177,852
2022	191,221	637,015
2021	597,265	34,525
2020	35,803	91,941
2019	90,311	82,385
Prior	402,213	342,174
Revolving Loans Amortized Cost Basis	177,702	221,333
Total	1,593,571	1,587,225
Real estate loans | Non-owner occupied | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	0	8,378
Revolving Loans Amortized Cost Basis	0	0
Total	0	8,378
Real estate loans | Non-owner occupied | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	20,113
2019	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	20,113
Real estate loans | Non-owner occupied | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Real estate loans | Non-owner occupied | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Real estate loans | Multi-family residential
Financing Receivable, Credit Quality Indicator [Line Items]
2023	1,801	85,670
2022	70,396	110,943
2021	105,857	26,881
2020	26,605	126,724
2019	117,535	27,242
Prior	144,313	124,433
Revolving Loans Amortized Cost Basis	305,147	318,130
Total	771,654	820,023
Real estate loans | Multi-family residential | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2023	1,801	85,670
2022	70,396	110,943
2021	105,857	26,881
2020	26,605	126,724
2019	117,535	27,242
Prior	120,969	124,433
Revolving Loans Amortized Cost Basis	305,147	318,130
Total	748,310	820,023
Real estate loans | Multi-family residential | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Real estate loans | Multi-family residential | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	23,344	0
Revolving Loans Amortized Cost Basis	0	0
Total	23,344	0
Real estate loans | Multi-family residential | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Real estate loans | Multi-family residential | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Real estate loans | Land development and construction loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023	42,384	8,846
2022	9,735	27,746
2021	28,911	23,459
2020	21,945	188
2019	0	0
Prior	26,928	26,930
Revolving Loans Amortized Cost Basis	172,035	186,005
Total	301,938	273,174
Real estate loans | Land development and construction loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2023	42,384	8,846
2022	9,735	27,746
2021	28,911	23,459
2020	21,945	188
2019	0	0
Prior	26,928	26,930
Revolving Loans Amortized Cost Basis	172,035	186,005
Total	301,938	273,174
Real estate loans | Land development and construction loans | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Real estate loans | Land development and construction loans | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Real estate loans | Land development and construction loans | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Real estate loans | Land development and construction loans | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Real estate loans | Single-family residential
Financing Receivable, Credit Quality Indicator [Line Items]
2023	286,064	480,328
2022	460,287	186,790
2021	181,306	70,853
2020	65,722	21,654
2019	21,041	16,630
Prior	72,306	65,990
Revolving Loans Amortized Cost Basis	284,468	260,600
Total	1,371,194	1,102,845
Real estate loans | Single-family residential | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2023	286,064	480,328
2022	460,287	186,790
2021	181,306	70,853
2020	65,722	21,654
2019	21,041	16,630
Prior	71,615	65,249
Revolving Loans Amortized Cost Basis	282,074	259,411
Total	1,368,109	1,100,915
Real estate loans | Single-family residential | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Real estate loans | Single-family residential | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	691	741
Revolving Loans Amortized Cost Basis	2,394	1,189
Total	3,085	1,930
Real estate loans | Single-family residential | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Real estate loans | Single-family residential | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Real estate loans | Owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
2023	143,861	258,912
2022	262,104	481,592
2021	435,936	22,997
2020	20,904	63,629
2019	58,112	22,440
Prior	163,058	163,694
Revolving Loans Amortized Cost Basis	45,946	33,186
Total	1,129,921	1,046,450
Real estate loans | Owner occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2023	143,861	256,816
2022	262,104	479,961
2021	434,620	22,341
2020	20,904	63,629
2019	58,112	21,790
Prior	161,840	162,411
Revolving Loans Amortized Cost Basis	44,066	33,146
Total	1,125,507	1,040,094
Real estate loans | Owner occupied | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	354	0
Revolving Loans Amortized Cost Basis	1,880	0
Total	2,234	0
Real estate loans | Owner occupied | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	2,096
2022	0	1,631
2021	1,316	656
2020	0	0
2019	0	650
Prior	864	1,283
Revolving Loans Amortized Cost Basis	0	40
Total	2,180	6,356
Real estate loans | Owner occupied | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Real estate loans | Owner occupied | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Commercial loans
Financing Receivable, Credit Quality Indicator [Line Items]
2023	309,417	400,781
2022	292,647	95,554
2021	79,482	20,082
2020	12,233	43,133
2019	36,680	33,774
Prior	39,038	17,281
Revolving Loans Amortized Cost Basis	683,262	770,629
Total	1,452,759	1,381,234
Commercial loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2023	302,410	400,781
2022	292,024	95,470
2021	79,465	19,815
2020	12,127	42,936
2019	34,900	32,248
Prior	38,184	16,297
Revolving Loans Amortized Cost Basis	660,939	761,489
Total	1,420,049	1,369,036
Commercial loans | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2023	7,007	0
2022	0	0
2021	0	0
2020	0	0
2019	0	1,499
Prior	0	0
Revolving Loans Amortized Cost Basis	19,968	250
Total	26,975	1,749
Commercial loans | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	623	84
2021	17	267
2020	106	194
2019	1,777	27
Prior	854	984
Revolving Loans Amortized Cost Basis	2,355	8,890
Total	5,732	10,446
Commercial loans | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	3
2019	3	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	3	3
Commercial loans | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Loans to financial institutions and acceptances
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	13,353	13,292
Revolving Loans Amortized Cost Basis	0	0
Total	13,353	13,292
Loans to financial institutions and acceptances | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	13,353	13,292
Revolving Loans Amortized Cost Basis	0	0
Total	13,353	13,292
Loans to financial institutions and acceptances | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Loans to financial institutions and acceptances | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Loans to financial institutions and acceptances | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Loans to financial institutions and acceptances | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Consumer loans and overdrafts
Financing Receivable, Credit Quality Indicator [Line Items]
2023	28,583	338,842
2022	211,027	121,139
2021	61,386	29,053
2020	21,306	68
2019	35	54
Prior	11	4
Revolving Loans Amortized Cost Basis	116,649	115,300
Total	438,997	604,460
Consumer loans and overdrafts | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
2023	28,583	338,744
2022	211,027	121,011
2021	61,386	29,053
2020	21,306	68
2019	35	54
Prior	10	0
Revolving Loans Amortized Cost Basis	116,649	115,300
Total	438,996	604,230
Consumer loans and overdrafts | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Consumer loans and overdrafts | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	98
2022	0	128
2021	0	0
2020	0	0
2019	0	0
Prior	1	4
Revolving Loans Amortized Cost Basis	0	0
Total	1	230
Consumer loans and overdrafts | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Consumer loans and overdrafts | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
2023	0	0
2022	0	0
2021	0	0
2020	0	0
2019	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	$ 0	$ 0

Allowance for Credit Losses -_6

Allowance for Credit Losses - Schedule of Gross Charge-Offs (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	$ 301	$ 622	$ 700	$ 3,188
2022	4,061	785	18,897	2,008
2021	2,411	305	8,824	5,415
2020	5,053	0	6,057	541
2019	1,823	0	1,836	0
Prior	2,170	99	2,919	501
Revolving Loans Charge-Offs	0	0	0	0
Total	15,819	1,811	39,233	11,653
Real estate loans
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0	0	0	0
2022	0	0	0	0
2021	0	0	0	0
2020	0	0	0	0
2019	0	0	0	0
Prior	90	0	129	14
Revolving Loans Charge-Offs	0	0	0	0
Total	90	0	129	14
Real estate loans | Non-owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0	0	0	0
2022	0	0	0	0
2021	0	0	0	0
2020	0	0	0	0
2019	0	0	0	0
Prior	90	0	90	0
Revolving Loans Charge-Offs	0	0	0	0
Total	90	0	90	0
Real estate loans | Multi-family residential
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0	0	0	0
2022	0	0	0	0
2021	0	0	0	0
2020	0	0	0	0
2019	0	0	0	0
Prior	0	0	0	0
Revolving Loans Charge-Offs	0	0	0	0
Total	0	0	0	0
Real estate loans | Land development and construction loans
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0	0	0	0
2022	0	0	0	0
2021	0	0	0	0
2020	0	0	0	0
2019	0	0	0	0
Prior	0	0	0	0
Revolving Loans Charge-Offs	0	0	0	0
Total	0	0	0	0
Real estate loans | Commercial real estate
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0	0	0	0
2022	0	0	0	0
2021	0	0	0	0
2020	0	0	0	0
2019	0	0	0	0
Prior	90	0	90	0
Revolving Loans Charge-Offs	0	0	0	0
Total	90	0	90	0
Real estate loans | Single-family residential
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0	0	0	0
2022	0	0	0	0
2021	0	0	0	0
2020	0	0	0	0
2019	0	0	0	0
Prior	0		39	14
Revolving Loans Charge-Offs	0	0	0	0
Total	0	0	39	14
Real estate loans | Owner occupied
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0	0	0	0
2022	0	0	0	0
2021	0	0	0	0
2020	0	0	0	0
2019	0	0	0	0
Prior	0	0	0	0
Revolving Loans Charge-Offs	0	0	0	0
Total	0	0	0	0
Commercial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	108	0	108	2,523
2022	534	0	9,308	0
2021	46	0	216	4,429
2020	4,868	0	5,026	541
2019	1,814	0	1,814	0
Prior	1,918	99	2,243	486
Revolving Loans Charge-Offs	0	0	0	0
Total	9,288	99	18,715	7,979
Loans to financial institutions and acceptances
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	0	0	0	0
2022	0	0	0	0
2021	0	0	0	0
2020	0	0	0	0
2019	0	0	0	0
Prior	0	0	0	0
Revolving Loans Charge-Offs	0	0	0	0
Total	0	0	0	0
Consumer loans and overdrafts
Financing Receivable, Allowance for Credit Loss [Line Items]
2023	193	622	592	665
2022	3,527	785	9,589	2,008
2021	2,365	305	8,608	986
2020	185	0	1,031	0
2019	9	0	22	0
Prior	162		547	1
Revolving Loans Charge-Offs	0	0	0	0
Total	$ 6,441	$ 1,712	$ 20,389	$ 3,660

Allowance for Credit Losses -_7

Allowance for Credit Losses - Schedule Of Financing Receivables By Type Of Collateral (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	$ 7,073,387	$ 6,857,194
Real estate loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	5,168,278	4,858,208
Commercial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	1,452,759	1,381,234
Collateralized Loan Obligations
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	29,712	34,454
Collateralized Loan Obligations | Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	25,295	28,053
Collateralized Loan Obligations | Residential Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	797	0
Collateralized Loan Obligations | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	3,620	6,401
Collateralized Loan Obligations | Specific Reserves
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	8,567	5,179
Collateralized Loan Obligations | Real estate loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans		26,055
Collateralized Loan Obligations | Real estate loans | Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans		26,055
Collateralized Loan Obligations | Real estate loans | Residential Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans		0
Collateralized Loan Obligations | Real estate loans | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans		0
Collateralized Loan Obligations | Real estate loans | Specific Reserves
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans		0
Collateralized Loan Obligations | Commercial loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	3,620	8,399
Collateralized Loan Obligations | Commercial loans | Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	0	$ 1,998
Weighted-average loan-to-value		42%
Collateralized Loan Obligations | Commercial loans | Residential Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	0	$ 0
Collateralized Loan Obligations | Commercial loans | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	3,620	6,401
Collateralized Loan Obligations | Commercial loans | Specific Reserves
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	0	5,179
Loans, no specific reserve		500
Non-owner occupied | Real estate loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	1,593,571	1,615,716
Non-owner occupied | Collateralized Loan Obligations | Real estate loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans		20,121
Non-owner occupied | Collateralized Loan Obligations | Real estate loans | Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans		$ 20,121
Weighted-average loan-to-value		92.70%
Non-owner occupied | Collateralized Loan Obligations | Real estate loans | Residential Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans		$ 0
Non-owner occupied | Collateralized Loan Obligations | Real estate loans | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans		0
Non-owner occupied | Collateralized Loan Obligations | Real estate loans | Specific Reserves
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans		0
Multi-family residential | Real estate loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	771,654	820,023
Multi-family residential | Collateralized Loan Obligations | Real estate loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	23,344
Multi-family residential | Collateralized Loan Obligations | Real estate loans | Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	23,344
Multi-family residential | Collateralized Loan Obligations | Real estate loans | Residential Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	0
Multi-family residential | Collateralized Loan Obligations | Real estate loans | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	0
Multi-family residential | Collateralized Loan Obligations | Real estate loans | Specific Reserves
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	8,567
Single-family residential | Real estate loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	1,371,194	1,102,845
Single-family residential | Collateralized Loan Obligations | Real estate loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	797
Single-family residential | Collateralized Loan Obligations | Real estate loans | Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	$ 0
Weighted-average loan-to-value	66.80%
Single-family residential | Collateralized Loan Obligations | Real estate loans | Residential Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	$ 797
Single-family residential | Collateralized Loan Obligations | Real estate loans | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	0
Single-family residential | Collateralized Loan Obligations | Real estate loans | Specific Reserves
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	0
Owner occupied | Real estate loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	1,129,921	1,046,450
Owner occupied | Collateralized Loan Obligations | Real estate loans
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	1,951	5,934
Owner occupied | Collateralized Loan Obligations | Real estate loans | Commercial Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	$ 1,951	$ 5,934
Weighted-average loan-to-value	58.10%	62.70%
Owner occupied | Collateralized Loan Obligations | Real estate loans | Residential Real Estate
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	$ 0	$ 0
Owner occupied | Collateralized Loan Obligations | Real estate loans | Other
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	0	0
Owner occupied | Collateralized Loan Obligations | Real estate loans | Specific Reserves
Financing Receivable, Allowance for Credit Loss [Line Items]
Loans	$ 0	$ 0

Time Deposits - Narrative (Deta

Time Deposits - Narrative (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Time Deposits Disclosure [Abstract]
Time deposits, $100,000 or more	$ 1,311,575	$ 928,417
Time deposits, $250,000 or more	700,000	486,000
Brokered time deposits	$ 723,000	$ 609,000

Time Deposits - Schedule of Tim

Time Deposits - Schedule of Time Deposit Maturities (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Time Deposits, $100,000 or More [Abstract]
Less than 3 months	$ 394,866	$ 140,292
3 to 6 months	151,991	148,137
6 to 12 months	598,763	497,436
1 to 3 years	157,740	135,663
Over 3 years	8,215	6,889
Total	$ 1,311,575	$ 928,417
Weighted Average Interest Rate of Time Deposits, $100,000 or More [Abstract]
Less than 3 months	30.10%	15.10%
3 to 6 months	11.60%	16%
6 to 12 months	45.70%	53.60%
1 to 3 years	12%	14.60%
Over 3 years	0.60%	0.70%
Total	100%	100%

Advances from the Federal Hom_3

Advances from the Federal Home Loan Bank (Details) - USD ($)	3 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
2023	$ 0			$ 304,821,000
Interest rate 2024	1.68%
2024	$ 0			100,000,000
2025	0			451,665,000
2026	110,000,000			0
2027 and after	485,000,000			50,000,000
Advances from the Federal Home Loan Bank	595,000,000			906,486,000
Gain on early extinguishment of advances from the Federal Home Loan Bank, net	7,000,000	$ 13,400,000	$ 13,200,000
Repayments	225,000,000	$ 355,000,000	$ 565,000,000
Callable Option
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Advances from the Federal Home Loan Bank	$ 0			$ 0
Minimum
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Interest Rate 2023	0.61%
Interest rate 2025	1.40%
Interest rate 2026	4.25%
Interest rate 2027 and after	1.82%
Maximum
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Interest Rate 2023	4.84%
Interest rate 2025	3.07%
Interest rate 2026	4.90%
Interest rate 2027 and after	4.40%

Senior Notes (Details)

Senior Notes (Details) - Senior notes - 5.75% Senior Notes due 2025 - USD ($)		9 Months Ended	12 Months Ended
	Jun. 23, 2020	Sep. 30, 2023	Dec. 31, 2022
Debt Instrument [Line Items]
Face amount	$ 60,000,000
Interest rate, stated percentage	5.75%
Debt issuance costs	$ 1,600,000	$ 600,000	$ 800,000
Proceeds from issuance of debt	$ 58,400,000	$ 59,400,000	$ 59,200,000
Debt issuance costs, amortization period	5 years

Subordinated Notes (Details)

Subordinated Notes (Details) - USD ($)	Mar. 09, 2022	Sep. 30, 2023	Dec. 31, 2022	Jun. 21, 2022
Debt Instrument [Line Items]
Subordinated notes		$ 29,412,000	$ 29,284,000
Subordinated notes | 4.50% Fixed-to-Floating Rate and Due in March 15, 2032
Debt Instrument [Line Items]
Face amount	$ 30,000,000
Effective percentage	4.25%			4.25%
Proceeds from issuance of debt	$ 29,100,000
Debt issuance costs	$ 900,000	600,000	700,000
Amortization period	10 years
Subordinated notes		$ 29,400,000	$ 29,300,000
Interest rate, stated percentage	4.25%
Variable rate	2.51%

Junior Subordinated Debenture_3

Junior Subordinated Debentures Held by Trust Subsidiaries (Details) - USD ($) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Debt Instrument [Line Items]
Amount of Trust Preferred Securities Issued by Trust	$ 62,250		$ 62,250
Principal Amount of Debenture Issued to Trust	64,178		64,178
Junior Subordinated Notes, Maturing 2033 | Junior Subordinated Debt | Commercebank Capital Trust VI
Debt Instrument [Line Items]
Principal Amount of Debenture Issued to Trust	$ 9,537		$ 9,537
Junior Subordinated Notes, Maturing 2033 | Junior Subordinated Debt | Commercebank Capital Trust VI | SOFR
Debt Instrument [Line Items]
Annual Rate of Trust Preferred Securities and Debentures	3.61%
Junior Subordinated Notes, Maturing 2033 | Junior Subordinated Debt | Commercebank Capital Trust VI | LIBOR
Debt Instrument [Line Items]
Annual Rate of Trust Preferred Securities and Debentures			3.35%
Junior Subordinated Notes, Maturing 2033 | Junior Subordinated Debt | Commercebank Capital Trust VII
Debt Instrument [Line Items]
Principal Amount of Debenture Issued to Trust	$ 8,248		$ 8,248
Junior Subordinated Notes, Maturing 2033 | Junior Subordinated Debt | Commercebank Capital Trust VII | SOFR
Debt Instrument [Line Items]
Annual Rate of Trust Preferred Securities and Debentures	3.51%
Junior Subordinated Notes, Maturing 2033 | Junior Subordinated Debt | Commercebank Capital Trust VII | LIBOR
Debt Instrument [Line Items]
Annual Rate of Trust Preferred Securities and Debentures		3.25%
Junior Subordinated Notes, Maturing 2033 | Commercebank Capital Trust VI
Debt Instrument [Line Items]
Amount of Trust Preferred Securities Issued by Trust	$ 9,250		9,250
Junior Subordinated Notes, Maturing 2033 | Commercebank Capital Trust VII
Debt Instrument [Line Items]
Amount of Trust Preferred Securities Issued by Trust	8,000		8,000
Junior Subordinated Notes, Maturing 2034 | Junior Subordinated Debt | Commercebank Capital Trust VIII
Debt Instrument [Line Items]
Principal Amount of Debenture Issued to Trust	$ 5,155		5,155
Junior Subordinated Notes, Maturing 2034 | Junior Subordinated Debt | Commercebank Capital Trust VIII | SOFR
Debt Instrument [Line Items]
Annual Rate of Trust Preferred Securities and Debentures	3.11%
Junior Subordinated Notes, Maturing 2034 | Junior Subordinated Debt | Commercebank Capital Trust VIII | LIBOR
Debt Instrument [Line Items]
Annual Rate of Trust Preferred Securities and Debentures		2.85%
Junior Subordinated Notes, Maturing 2034 | Commercebank Capital Trust VIII
Debt Instrument [Line Items]
Amount of Trust Preferred Securities Issued by Trust	$ 5,000		5,000
Junior Subordinated Notes, Maturing 2038 | Junior Subordinated Debt | Commercebank Capital Trust IX
Debt Instrument [Line Items]
Principal Amount of Debenture Issued to Trust	$ 25,774		25,774
Junior Subordinated Notes, Maturing 2038 | Junior Subordinated Debt | Commercebank Capital Trust IX | SOFR
Debt Instrument [Line Items]
Annual Rate of Trust Preferred Securities and Debentures	2.01%
Junior Subordinated Notes, Maturing 2038 | Junior Subordinated Debt | Commercebank Capital Trust IX | LIBOR
Debt Instrument [Line Items]
Annual Rate of Trust Preferred Securities and Debentures		1.75%
Junior Subordinated Notes, Maturing 2038 | Commercebank Capital Trust IX
Debt Instrument [Line Items]
Amount of Trust Preferred Securities Issued by Trust	$ 25,000		25,000
Junior Subordinated Notes, Maturing 2036 | Junior Subordinated Debt | Commercebank Capital Trust X
Debt Instrument [Line Items]
Principal Amount of Debenture Issued to Trust	$ 15,464		15,464
Junior Subordinated Notes, Maturing 2036 | Junior Subordinated Debt | Commercebank Capital Trust X | SOFR
Debt Instrument [Line Items]
Annual Rate of Trust Preferred Securities and Debentures	2.04%
Junior Subordinated Notes, Maturing 2036 | Junior Subordinated Debt | Commercebank Capital Trust X | LIBOR
Debt Instrument [Line Items]
Annual Rate of Trust Preferred Securities and Debentures		1.78%
Junior Subordinated Notes, Maturing 2036 | Commercebank Capital Trust X
Debt Instrument [Line Items]
Amount of Trust Preferred Securities Issued by Trust	$ 15,000		$ 15,000

Derivative Instruments - Schedu

Derivative Instruments - Schedule of Derivative Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Derivatives, Fair Value [Line Items]
Other Assets	$ 87,144	$ 78,250
Other Liabilities	85,618	77,160
Derivatives Designated as Hedging Instruments | Interest Rate Swap Contracts
Derivatives, Fair Value [Line Items]
Other Assets	1,199	167
Other Liabilities	919	45
Derivatives Not Designated as Hedging Instruments | Interest Rate Swap Contracts
Derivatives, Fair Value [Line Items]
Other Assets	76,235	67,042
Other Liabilities	76,235	67,042
Derivatives Not Designated as Hedging Instruments | Interest Rate Swap Contracts | Customers
Derivatives, Fair Value [Line Items]
Other Assets	62	603
Other Liabilities	76,173	66,439
Derivatives Not Designated as Hedging Instruments | Interest Rate Swap Contracts | Third party broker
Derivatives, Fair Value [Line Items]
Other Assets	76,173	66,439
Other Liabilities	62	603
Derivatives Not Designated as Hedging Instruments | Interest Rate Cap Contracts
Derivatives, Fair Value [Line Items]
Other Assets	8,715	10,207
Other Liabilities	8,374	10,002
Derivatives Not Designated as Hedging Instruments | Interest Rate Cap Contracts | Customers
Derivatives, Fair Value [Line Items]
Other Assets	0	0
Other Liabilities	8,374	10,002
Derivatives Not Designated as Hedging Instruments | Interest Rate Cap Contracts | Third party broker
Derivatives, Fair Value [Line Items]
Other Assets	8,715	10,207
Other Liabilities	0	0
Derivatives Not Designated as Hedging Instruments | Mortgage Derivatives
Derivatives, Fair Value [Line Items]
Other Assets	995	834
Other Liabilities	90	71
Derivatives Not Designated as Hedging Instruments | Mortgage Derivatives | Interest rate lock commitments
Derivatives, Fair Value [Line Items]
Other Assets	708	727
Other Liabilities	0	0
Derivatives Not Designated as Hedging Instruments | Mortgage Derivatives | Forward contracts
Derivatives, Fair Value [Line Items]
Other Assets	287	107
Other Liabilities	$ 90	$ 71

Derivative Instruments - Narrat

Derivative Instruments - Narrative (Details)	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2023 USD ($) instrument	Sep. 30, 2022 USD ($)	Sep. 30, 2023 USD ($) instrument	Sep. 30, 2022 USD ($)	Dec. 31, 2019 USD ($) contract	Jun. 30, 2023 USD ($)	Dec. 31, 2022 USD ($) instrument	Apr. 30, 2022 USD ($) instrument
Derivatives, Fair Value [Line Items]
Net unrealized losses in accumulated other comprehensive expected to be reclassified into expense in the next twelve months	$ 300,000		$ 300,000
Interest Rate Swap Contracts
Derivatives, Fair Value [Line Items]
Notional amount						$ 50,000,000
Unrealized gain (loss)	(200,000)		(200,000)
Derivatives Designated as Hedging Instruments | Interest Rate Swap Contracts
Derivatives, Fair Value [Line Items]
Net unrealized losses in accumulated other comprehensive expected to be reclassified into expense in the next twelve months	700,000		700,000
Derivatives Designated as Hedging Instruments | Interest Rate Swap Contracts | Federal Home Loan Bank Advances
Derivatives, Fair Value [Line Items]
Number of instruments terminated | contract					16
Gain on termination of cash flow hedge					$ 8,900,000
FHLB, advances, reduction of interest expense	$ 300,000	$ 300,000	$ 1,000,000	$ 1,000,000
Derivatives Designated as Hedging Instruments | Interest Rate Swap Contracts | Federal Home Loan Bank Advances | Minimum
Derivatives, Fair Value [Line Items]
Average remaining maturity					1 month
Derivatives Designated as Hedging Instruments | Interest Rate Swap Contracts | Federal Home Loan Bank Advances | Maximum
Derivatives, Fair Value [Line Items]
Average remaining maturity					7 years
Derivatives Designated as Hedging Instruments | Interest Rate Swap Contracts | Junior subordinated debentures
Derivatives, Fair Value [Line Items]
Number of instruments held | instrument	5		5				5
Notional amount	$ 64,200,000		$ 64,200,000				$ 64,200,000
Amount of hedged item	64,200,000		64,200,000				$ 64,200,000
Unrealized gain (loss)	200,000	8,000	300,000	(300,000)
Derivatives Designated as Hedging Instruments | Variable Interest Rate
Derivatives, Fair Value [Line Items]
Notional amount						$ 50,000,000
Derivatives Not Designated as Hedging Instruments | Interest Rate Swap Contracts | Customers
Derivatives, Fair Value [Line Items]
Number of instruments held | instrument							143
Notional amount	$ 969,400,000		$ 969,400,000				$ 925,400,000
Derivatives Not Designated as Hedging Instruments | Credit Risk Contract
Derivatives, Fair Value [Line Items]
Number of instruments held | instrument	4		4				4
Notional amount	$ 72,600,000		$ 72,600,000				$ 74,000,000
Derivatives Not Designated as Hedging Instruments | Interest Rate Cap Contracts | Customers
Derivatives, Fair Value [Line Items]
Number of instruments held | instrument	15		15				19
Notional amount	$ 353,400,000		$ 353,400,000				$ 448,800,000
Derivatives Not Designated as Hedging Instruments | Interest Rate Cap Contracts | Third party broker
Derivatives, Fair Value [Line Items]
Number of instruments held | instrument	14		14				16
Notional amount	$ 332,400,000		$ 332,400,000				$ 371,900,000
Derivatives Not Designated as Hedging Instruments | Interest Rate Cap Contract | Third party broker
Derivatives, Fair Value [Line Items]
Number of instruments held | instrument	1		1				4	4
Notional amount	$ 35,000,000		$ 35,000,000				$ 140,000,000	$ 140,000,000
Derivatives Not Designated as Hedging Instruments | Interest rate lock commitments
Derivatives, Fair Value [Line Items]
Notional amount	92,400,000		92,400,000				77,000,000
Derivatives Not Designated as Hedging Instruments | Forward contracts
Derivatives, Fair Value [Line Items]
Notional amount	36,500,000		36,500,000				$ 17,000,000
Gain due to change in fair value	$ 100,000	$ 100,000	$ 100,000	$ 300,000

Derivative Instruments - Credit

Derivative Instruments - Credit Risk (Narrative) (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Derivative [Line Items]
Other Liabilities	$ 85,618	$ 77,160
Obligation to repay	51,200	41,600
Interest Rate Swap Contracts
Derivative [Line Items]
Fair value of derivative contracts	77,200	67,100
Interest Rate Swap Contracts | Derivatives Designated as Hedging Instruments
Derivative [Line Items]
Securities pledged	0	500
Other Liabilities	$ 919	$ 45

Leases - Narrative (Details)

Leases - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022	Dec. 31, 2022
Lessee, Lease, Description [Line Items]
Variable lease cost	$ 588	$ 414	$ 1,675	$ 1,304
Operating lease right-of-use assets	116,763		116,763		$ 139,987
Total lease obligations	124,072		124,072		145,300
Short-term lease liability	3,400		3,400		5,200
Direct or sale type finance leases	2,500		2,500		13,600
Premises and equipment, net	43,004		43,004		$ 41,772
Operating Leases
Lessee, Lease, Description [Line Items]
Premises and equipment, net	$ 3,100		$ 3,100
Minimum
Lessee, Lease, Description [Line Items]
Term of contract	1 year		1 year
Maximum
Lessee, Lease, Description [Line Items]
Term of contract	42 years		42 years
Florida
Lessee, Lease, Description [Line Items]
Impairments of operating lease ROU asset			$ 1,100	$ 1,600

Leases - Schedule of Lease Cost

Leases - Schedule of Lease Cost (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Lease cost
Operating lease cost	$ 5,248	$ 4,278	$ 13,866	$ 13,008
Short-term lease cost	24	18	24	62
Variable lease cost	588	414	1,675	1,304
Sublease income	(857)	(527)	(2,582)	(2,164)
Total lease cost, net	$ 5,003	$ 4,183	$ 12,983	$ 12,210

Leases - Schedule of Supplement

Leases - Schedule of Supplemental Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Leases [Abstract]
Cash paid for amounts included in the measurement of operating lease liabilities	$ 4,267	$ 3,499	$ 11,908	$ 10,811
Weighted average remaining lease term for operating leases	17 years	18 years 3 months 18 days	17 years	18 years 3 months 18 days
Weighted average discount rate for operating leases	9.66%	5.94%	9.66%	5.94%

Leases - Schedule of Lessee, Op

Leases - Schedule of Lessee, Operating Lease, Liability, Maturity (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Leases [Abstract]
For the remaining three months of 2023	$ 3,585
2024	14,579
2025	14,659
2026	14,905
2027	15,216
Thereafter	199,817
Total minimum payments required	262,761
Less: implied interest	(138,689)
Total lease obligations	$ 124,072	$ 145,300

Stock-based Incentive Compens_3

Stock-based Incentive Compensation Plan - Schedule of Restricted Stock Activity (Details)	9 Months Ended
	Sep. 30, 2023 $ / shares shares
Number of restricted shares (in shares)
Non-vested shares, end of year (in shares)	577,511
Restricted Stock
Number of restricted shares (in shares)
Non-vested shares, beginning of year (in shares)	295,076
Grants (in shares)	10,440
Vested (in shares)	(103,118)
Forfeited (in shares)	(36,691)
Non-vested shares, end of year (in shares)	165,707
Weighted-average grant date fair value (in dollars per share)
Non-vested shares, beginning of year, Weighted-average grant date fair value (in dollars per share) | $ / shares	$ 25.83
Granted, Weighted-average grant date fair value (in dollars per share) | $ / shares	27.42
Vested, Weighted-average grant date fair value (in dollars per share) | $ / shares	24.22
Forfeited, Weighted-average grant date fair value (in dollars per share) | $ / shares	23.87
Non-vested shares, end of year, Weighted-average grant date fair value (in dollars per share) | $ / shares	$ 27.37

Stock-based Incentive Compens_4

Stock-based Incentive Compensation Plan - Narrative (Details) - USD ($) $ / shares in Units, $ in Millions			3 Months Ended			9 Months Ended
	Jun. 07, 2023	Feb. 16, 2023	Sep. 30, 2023	Jun. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Restricted Stock
Defined Contribution Plan Disclosure [Line Items]
Grants (in shares)						10,440
Granted, weighted average grant date fair value (in dollars per share)						$ 27.42
Vested (in shares)						103,118
Restricted Stock | Class A Common Stock
Defined Contribution Plan Disclosure [Line Items]
Share-based compensation expense			$ 0.3		$ 0.9	$ 1.8	$ 2.4
Nonvested awards, compensation not yet recognized			$ 1.5			$ 1.5
Nonvested awards, period of recognition						1 year 2 months 12 days
Restricted Stock | LTI Plan | Class A Common Stock
Defined Contribution Plan Disclosure [Line Items]
Grants (in shares)						10,440
Granted, weighted average grant date fair value (in dollars per share)						$ 27.42
Award vesting period						3 years
Restricted Stock Units (RSUs)
Defined Contribution Plan Disclosure [Line Items]
Grants (in shares)				65,759
Granted, weighted average grant date fair value (in dollars per share)				$ 19.04
Award vesting period				3 years
Restricted Stock Units (RSUs) | Executive Officers
Defined Contribution Plan Disclosure [Line Items]
Grants (in shares)		113,297	24,000
Granted, weighted average grant date fair value (in dollars per share)		$ 28.93	$ 19.96
Award vesting period		3 years
Restricted Stock Units (RSUs) | Executive Officers | Vesting in Two Years
Defined Contribution Plan Disclosure [Line Items]
Award vesting period			2 years
Vested (in shares)			16,111
Vesting percentage			40%
Restricted Stock Units (RSUs) | Executive Officers | Vesting in Three Years
Defined Contribution Plan Disclosure [Line Items]
Award vesting period			3 years
Vested (in shares)			7,889
Vesting percentage			60%
Restricted Stock Units (RSUs) | Director
Defined Contribution Plan Disclosure [Line Items]
Grants (in shares)	28,920
Granted, weighted average grant date fair value (in dollars per share)	$ 20.74
Award vesting period	1 year
PSUs | Executive Officers
Defined Contribution Plan Disclosure [Line Items]
Grants (in shares)		38,049		15,371
Granted, weighted average grant date fair value (in dollars per share)				$ 15.60
Award vesting period				3 years
PSUs | Class A Common Stock | Executive Officers
Defined Contribution Plan Disclosure [Line Items]
Granted, weighted average grant date fair value (in dollars per share)		$ 29.11
Award vesting period		3 years
RSUs and PSUs
Defined Contribution Plan Disclosure [Line Items]
Share-based compensation expense			$ 1.3		$ 0.7	$ 3.2	$ 1.7
Nonvested awards, compensation not yet recognized			$ 5.6			$ 5.6
Nonvested awards, period of recognition						1 year 10 months 24 days

Stock-based Incentive Compens_5

Stock-based Incentive Compensation Plan - Schedule of Restricted Stock Units and Performance Stock Units (Details)	9 Months Ended
	Sep. 30, 2023 $ / shares shares
Number of RSUs (in shares)
Non-vested shares, end of year (in shares)	577,511
Stock-settled RSUs
Number of RSUs (in shares)
Non-vested shares, beginning of year (in shares)	123,970
Grants (in shares)	231,976
Vested (in shares)	(64,820)
Forfeited (in shares)	(12,081)
Non-vested shares, end of year (in shares)	279,045
Weighted-average grant date fair value (in dollars per share)
Non-vested shares, beginning of year, Weighted-average grant date fair value (in dollars per share) | $ / shares	$ 22.83
Granted, Weighted-average grant date fair value (in dollars per share) | $ / shares	24.18
Vested, Weighted-average grant date fair value (in dollars per share) | $ / shares	22.71
Forfeited, Weighted-average grant date fair value (in dollars per share) | $ / shares	27.08
Non-vested shares, end of year, Weighted-average grant date fair value (in dollars per share) | $ / shares	$ 23.80
Stock-settled PSUs
Number of RSUs (in shares)
Non-vested shares, beginning of year (in shares)	137,199
Grants (in shares)	53,420
Vested (in shares)	(10,442)
Forfeited (in shares)	(2,867)
Non-vested shares, end of year (in shares)	177,310
Weighted-average grant date fair value (in dollars per share)
Non-vested shares, beginning of year, Weighted-average grant date fair value (in dollars per share) | $ / shares	$ 17.43
Granted, Weighted-average grant date fair value (in dollars per share) | $ / shares	25.09
Vested, Weighted-average grant date fair value (in dollars per share) | $ / shares	19
Forfeited, Weighted-average grant date fair value (in dollars per share) | $ / shares	33.63
Non-vested shares, end of year, Weighted-average grant date fair value (in dollars per share) | $ / shares	$ 19.38

Income Taxes (Details)

Income Taxes (Details)	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022
Income Tax Disclosure [Abstract]
Effective income tax rate	21.71%	21.50%

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive (loss) Income (“AOCL/AOCI”) - Schedule of Components of AOCI (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Accumulated Other Comprehensive Income (Loss) [Line Items]
Before Tax Amount	$ (141,816)	$ (108,298)
Tax Effect	36,182	27,663
Net of Tax Amount	(105,634)	(80,635)
Net unrealized holding losses on debt securities available for sale
Accumulated Other Comprehensive Income (Loss) [Line Items]
Before Tax Amount	(144,634)	(111,957)
Tax Effect	36,907	28,605
Net of Tax Amount	(107,727)	(83,352)
Net unrealized holding losses (gains) on interest rate swaps designated as cash flow hedges:
Accumulated Other Comprehensive Income (Loss) [Line Items]
Before Tax Amount	2,818	3,659
Tax Effect	(725)	(942)
Net of Tax Amount	$ 2,093	$ 2,717

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive (loss) Income (“AOCL/AOCI”) - Schedule of Components of Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Before Tax Amount
Total other comprehensive loss	$ (25,193)			$ (47,404)			$ (33,518)	$ (135,997)
Tax Effect
Total other comprehensive loss	6,485			12,155			8,519	34,572
Net of Tax Amount
Reclassification adjustment for net losses (gains) included in net income, net of tax amount	(268)			(274)			723	(549)
Other comprehensive loss	(18,708)	$ (12,607)	$ 6,316	(35,249)	$ (26,535)	$ (39,641)	(24,999)	(101,425)
Net unrealized holding losses on debt securities available for sale:
Before Tax Amount
Change in fair value arising during the period, before tax amount	(25,007)			(47,015)			(34,775)	(135,554)
Reclassification adjustment for net losses (gains) included in net income, before tax amount	0			(22)			2,098	(71)
Total other comprehensive loss	(25,007)			(47,037)			(32,677)	(135,625)
Tax Effect
Change in fair value arising during the period, tax effect	6,438			12,056			8,836	34,516
Reclassification adjustment for net losses (gains) included in net income, tax effect	0			5			(534)	18
Total other comprehensive loss	6,438			12,061			8,302	34,534
Net of Tax Amount
Change in fair value arising during the period, net of tax amount	(18,569)			(34,959)			(25,939)	(101,038)
Reclassification adjustment for net losses (gains) included in net income, net of tax amount	0			(17)			1,564	(53)
Other comprehensive loss	(18,569)			(34,976)			(24,375)	(101,091)
Net unrealized holding losses (gains) on interest rate swaps designated as cash flow hedges:
Before Tax Amount
Change in fair value arising during the period, before tax amount	174			(22)			288	295
Reclassification adjustment for net losses (gains) included in net income, before tax amount	(360)			(345)			(1,129)	(667)
Total other comprehensive loss	(186)			(367)			(841)	(372)
Tax Effect
Change in fair value arising during the period, tax effect	(45)			6			(71)	(133)
Reclassification adjustment for net losses (gains) included in net income, tax effect	92			88			288	171
Total other comprehensive loss	47			94			217	38
Net of Tax Amount
Change in fair value arising during the period, net of tax amount	129			(16)			217	162
Reclassification adjustment for net losses (gains) included in net income, net of tax amount	(268)			(257)			(841)	(496)
Other comprehensive loss	$ (139)			$ (273)			$ (624)	$ (334)

Contingencies - Schedule of Fin

Contingencies - Schedule of Financial Instruments whose Contract Amount Represents Off-Balance Sheet Credit Risk (Details) $ in Thousands	Sep. 30, 2023 USD ($)
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Approximate Contract Amount	$ 1,270,444
Commitments to extend credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Approximate Contract Amount	1,238,080
Standby letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Approximate Contract Amount	32,300
Commercial letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Approximate Contract Amount	$ 64

Contingencies - Schedule of Cha

Contingencies - Schedule of Changes in the Allowance for Credit Losses for Off-Balance Sheet (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Off-Balance-Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance	$ 2,002	$ 1,702	$ 1,702	$ 1,702
Provision for credit losses - off balance sheet exposures	600	0	900	0
Ending balance	$ 2,602	$ 1,702	$ 2,602	$ 1,702

Fair Value Measurements - Sched

Fair Value Measurements - Schedule of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($)	Sep. 30, 2023	Dec. 31, 2022
Assets
Other short-term investments	$ 6,024,000	$ 0
Debt securities available for sale
Equity securities with readily determinable fair value not held for trading	2,438,000	11,383,000
Securities	1,314,367,000	1,366,680,000
Mortgage loans held for sale (at fair value)	25,952,000	62,438,000
Derivative instruments	87,144,000	78,250,000
Liabilities
Derivative instruments	85,618,000	77,160,000
Fair Value, Measurements, Recurring
Assets
Other short-term investments	6,024,000
Debt securities available for sale
Debt securities available for sale	1,033,797,000	1,057,621,000
Equity securities with readily determinable fair value not held for trading	2,438,000	11,383,000
Securities	1,036,235,000	1,069,004,000
Mortgage loans held for sale (at fair value)	25,952,000	62,438,000
Bank owned life insurance	232,736,000	228,412,000
Mortgage servicing rights (MSRs)	1,306,000	1,307,000
Derivative instruments	87,144,000	78,250,000
Assets measured at fair value	1,389,397,000	1,439,411,000
Liabilities
Derivative instruments	85,618,000	77,160,000
Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Other short-term investments	0
Debt securities available for sale
Debt securities available for sale	0	0
Equity securities with readily determinable fair value not held for trading	2,438,000	11,383,000
Securities	2,438,000	11,383,000
Mortgage loans held for sale (at fair value)	0	0
Bank owned life insurance	0	0
Mortgage servicing rights (MSRs)	0	0
Derivative instruments	0	0
Assets measured at fair value	2,438,000	11,383,000
Liabilities
Derivative instruments	0	0
Fair Value, Measurements, Recurring | Third-Party Models with Observable Market Inputs (Level 2)
Assets
Other short-term investments	6,024,000
Debt securities available for sale
Debt securities available for sale	1,033,797,000	1,057,621,000
Equity securities with readily determinable fair value not held for trading	0	0
Securities	1,033,797,000	1,057,621,000
Mortgage loans held for sale (at fair value)	25,952,000	62,438,000
Bank owned life insurance	232,736,000	228,412,000
Mortgage servicing rights (MSRs)	0	0
Derivative instruments	87,144,000	78,250,000
Assets measured at fair value	1,385,653,000	1,426,721,000
Liabilities
Derivative instruments	85,618,000	77,160,000
Fair Value, Measurements, Recurring | Internal Models with Unobservable Market Inputs (Level 3)
Assets
Other short-term investments	0
Debt securities available for sale
Debt securities available for sale	0	0
Equity securities with readily determinable fair value not held for trading	0	0
Securities	0	0
Mortgage loans held for sale (at fair value)	0	0
Bank owned life insurance	0	0
Mortgage servicing rights (MSRs)	1,306,000	1,307,000
Derivative instruments	0	0
Assets measured at fair value	1,306,000	1,307,000
Liabilities
Derivative instruments	0	0
U.S. government-sponsored enterprise debt securities | Fair Value, Measurements, Recurring
Debt securities available for sale
Debt securities available for sale	414,635,000	437,674,000
U.S. government-sponsored enterprise debt securities | Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Debt securities available for sale
Debt securities available for sale	0	0
U.S. government-sponsored enterprise debt securities | Fair Value, Measurements, Recurring | Third-Party Models with Observable Market Inputs (Level 2)
Debt securities available for sale
Debt securities available for sale	414,635,000	437,674,000
U.S. government-sponsored enterprise debt securities | Fair Value, Measurements, Recurring | Internal Models with Unobservable Market Inputs (Level 3)
Debt securities available for sale
Debt securities available for sale	0	0
Corporate debt securities | Fair Value, Measurements, Recurring
Debt securities available for sale
Debt securities available for sale	252,578,000	280,700,000
Corporate debt securities | Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Debt securities available for sale
Debt securities available for sale	0	0
Corporate debt securities | Fair Value, Measurements, Recurring | Third-Party Models with Observable Market Inputs (Level 2)
Debt securities available for sale
Debt securities available for sale	252,578,000	280,700,000
Corporate debt securities | Fair Value, Measurements, Recurring | Internal Models with Unobservable Market Inputs (Level 3)
Debt securities available for sale
Debt securities available for sale	0	0
U.S. government agency debt securities | Fair Value, Measurements, Recurring
Debt securities available for sale
Debt securities available for sale	355,987,000	330,821,000
U.S. government agency debt securities | Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Debt securities available for sale
Debt securities available for sale	0	0
U.S. government agency debt securities | Fair Value, Measurements, Recurring | Third-Party Models with Observable Market Inputs (Level 2)
Debt securities available for sale
Debt securities available for sale	355,987,000	330,821,000
U.S. government agency debt securities | Fair Value, Measurements, Recurring | Internal Models with Unobservable Market Inputs (Level 3)
Debt securities available for sale
Debt securities available for sale	0	0
Collateralized loan obligations | Fair Value, Measurements, Recurring
Debt securities available for sale
Debt securities available for sale	5,005,000	4,774,000
Collateralized loan obligations | Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Debt securities available for sale
Debt securities available for sale	0	0
Collateralized loan obligations | Fair Value, Measurements, Recurring | Third-Party Models with Observable Market Inputs (Level 2)
Debt securities available for sale
Debt securities available for sale	5,005,000	4,774,000
Collateralized loan obligations | Fair Value, Measurements, Recurring | Internal Models with Unobservable Market Inputs (Level 3)
Debt securities available for sale
Debt securities available for sale	0	0
Municipal bonds | Fair Value, Measurements, Recurring
Debt securities available for sale
Debt securities available for sale	1,640,000	1,656,000
Municipal bonds | Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Debt securities available for sale
Debt securities available for sale	0	0
Municipal bonds | Fair Value, Measurements, Recurring | Third-Party Models with Observable Market Inputs (Level 2)
Debt securities available for sale
Debt securities available for sale	1,640,000	1,656,000
Municipal bonds | Fair Value, Measurements, Recurring | Internal Models with Unobservable Market Inputs (Level 3)
Debt securities available for sale
Debt securities available for sale	0	0
U.S treasury securities | Fair Value, Measurements, Recurring
Debt securities available for sale
Debt securities available for sale	3,952,000	1,996,000
U.S treasury securities | Fair Value, Measurements, Recurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Debt securities available for sale
Debt securities available for sale	0	0
U.S treasury securities | Fair Value, Measurements, Recurring | Third-Party Models with Observable Market Inputs (Level 2)
Debt securities available for sale
Debt securities available for sale	3,952,000	1,996,000
U.S treasury securities | Fair Value, Measurements, Recurring | Internal Models with Unobservable Market Inputs (Level 3)
Debt securities available for sale
Debt securities available for sale	$ 0	$ 0

Fair Value Measurements - Sch_2

Fair Value Measurements - Schedule of Assets Measured at Fair Value on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Sep. 30, 2023	Dec. 31, 2022
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	$ 7,073,387	$ 6,857,194
Collateralized Loan Obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	29,712	34,454
Specific Reserves | Collateralized Loan Obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans	8,567	5,179
Fair Value, Measurements, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	87,584
Total Write Downs	9,933	3,900
Fair Value, Measurements, Nonrecurring | Loans held for sale, at lower of fair value or cost
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	43,257
Total Write Downs	5,562
Fair Value, Measurements, Nonrecurring | Loans held for investment measured for impairments using the fair value of the collateral
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	24,146	30,158
Total Write Downs	4,371	3,851
Fair Value, Measurements, Nonrecurring | Other Real Estate Owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	20,181
Total Write Downs	0
Fair Value, Measurements, Nonrecurring | Quoted Prices in Active Markets for Identical Assets (Level 1)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	0
Fair Value, Measurements, Nonrecurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Loans held for sale, at lower of fair value or cost
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	0
Fair Value, Measurements, Nonrecurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Loans held for investment measured for impairments using the fair value of the collateral
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	0	0
Fair Value, Measurements, Nonrecurring | Quoted Prices in Active Markets for Identical Assets (Level 1) | Other Real Estate Owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	0
Fair Value, Measurements, Nonrecurring | Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	0
Fair Value, Measurements, Nonrecurring | Significant Other Observable Inputs (Level 2) | Loans held for sale, at lower of fair value or cost
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	0
Fair Value, Measurements, Nonrecurring | Significant Other Observable Inputs (Level 2) | Loans held for investment measured for impairments using the fair value of the collateral
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	0	0
Fair Value, Measurements, Nonrecurring | Significant Other Observable Inputs (Level 2) | Other Real Estate Owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	0
Fair Value, Measurements, Nonrecurring | Significant Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	87,584
Fair Value, Measurements, Nonrecurring | Significant Unobservable Inputs (Level 3) | Loans held for sale, at lower of fair value or cost
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	43,257
Fair Value, Measurements, Nonrecurring | Significant Unobservable Inputs (Level 3) | Loans held for investment measured for impairments using the fair value of the collateral
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	24,146	$ 30,158
Fair Value, Measurements, Nonrecurring | Significant Unobservable Inputs (Level 3) | Other Real Estate Owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	$ 20,181

Fair Value Measurements - Sch_3

Fair Value Measurements - Schedule of Fair Value Measurement Inputs and Valuation Techniques (Details) - Internal Models with Unobservable Market Inputs (Level 3)	Sep. 30, 2023
Collateral dependent loans | Minimum | Discount Range | Appraisal value, as adjusted
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unobservable input	0
Collateral dependent loans | Minimum | Discount Range | Inventory
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unobservable input	0
Collateral dependent loans | Minimum | Discount Range | Accounts receivables
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unobservable input	0
Collateral dependent loans | Minimum | Discount Range | Equipment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unobservable input	0
Collateral dependent loans | Minimum | Typical Discount | Appraisal value, as adjusted
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unobservable input	0.06
Collateral dependent loans | Minimum | Typical Discount | Inventory
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unobservable input	0.30
Collateral dependent loans | Minimum | Typical Discount | Accounts receivables
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unobservable input	0.20
Collateral dependent loans | Minimum | Typical Discount | Equipment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unobservable input	0.20
Collateral dependent loans | Maximum | Discount Range | Appraisal value, as adjusted
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unobservable input	0.30
Collateral dependent loans | Maximum | Discount Range | Inventory
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unobservable input	1
Collateral dependent loans | Maximum | Discount Range | Accounts receivables
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unobservable input	1
Collateral dependent loans | Maximum | Discount Range | Equipment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unobservable input	1
Collateral dependent loans | Maximum | Typical Discount | Appraisal value, as adjusted
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unobservable input	0.07
Collateral dependent loans | Maximum | Typical Discount | Inventory
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unobservable input	0.50
Collateral dependent loans | Maximum | Typical Discount | Accounts receivables
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unobservable input	0.30
Collateral dependent loans | Maximum | Typical Discount | Equipment
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unobservable input	0.30
OREO and other repossessed assets | Minimum | Typical Discount | Appraisal value, as adjusted
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unobservable input	0.06
OREO and other repossessed assets | Maximum | Typical Discount | Appraisal value, as adjusted
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unobservable input	0.07

Fair Value Measurements - Narra

Fair Value Measurements - Narrative (Details) - USD ($)	9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Mar. 31, 2023	Dec. 31, 2022
Fair Value Disclosures [Abstract]
Minimum outstanding balance of loans for third party appraisal	$ 1,000,000
Other repossessed assets			$ 6,400,000
Loss on sale of other repossessed assets	$ 2,649,000	$ 0
Repossessed asset				$ 0

Fair Value Measurements - Sch_4

Fair Value Measurements - Schedule of Estimated Fair Value of Financial Instruments where Fair Value Differs from Carrying Value (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Financial assets:
Debt securities held to maturity, carrying value	$ 230,254	$ 242,101
Debt securities held to maturity, fair value	195,165	217,609
Carrying Value
Financial assets:
Loans	3,319,421	3,314,553
Financial liabilities:
Time deposits	1,579,458	1,119,510
Advances from the FHLB	595,000	906,486
Carrying Value | Senior notes
Financial liabilities:
Senior notes	59,447	59,210
Carrying Value | Subordinated notes
Financial liabilities:
Junior subordinated debentures	29,412	29,284
Carrying Value | Junior subordinated debentures
Financial liabilities:
Junior subordinated debentures	64,178	64,178
Estimated Fair Value
Financial assets:
Loans	3,145,042	3,181,696
Financial liabilities:
Time deposits	1,569,852	1,099,294
Advances from the FHLB	588,604	873,852
Estimated Fair Value | Senior notes
Financial liabilities:
Senior notes	56,293	58,755
Estimated Fair Value | Subordinated notes
Financial liabilities:
Junior subordinated debentures	28,481	28,481
Estimated Fair Value | Junior subordinated debentures
Financial liabilities:
Junior subordinated debentures	$ 63,237	$ 64,182

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended						9 Months Ended
	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Sep. 30, 2023	Sep. 30, 2022
Earnings Per Share [Abstract]
Net income before attribution of noncontrolling interest	$ 21,741			$ 17,490			$ 48,729	$ 40,145
Noncontrolling interest	(378)	$ (262)	$ (244)	(44)	$ (72)	$ (1,076)	(884)	(1,192)
Net income attributable to Amerant Bancorp Inc.	$ 22,119	$ 7,308	$ 20,186	$ 17,534	$ 8,424	$ 15,379	$ 49,613	$ 41,337
Basic weighted average shares outstanding (in shares)	33,489,560			33,476,418			33,537,759	33,985,856
Dilutive effect of share-based compensation awards (in shares)	207,060			270,460			218,756	267,706
Diluted weighted average shares outstanding (in shares)	33,696,620			33,746,878			33,756,515	34,253,562
Basic earnings per common share (in dollars per share)	$ 0.66			$ 0.52			$ 1.48	$ 1.22
Diluted earnings per common share (in dollars per share)	$ 0.66			$ 0.52			$ 1.47	$ 1.21
Non-vested shares (in shares)	577,511			532,867			577,511	532,867