Amerant Bancorp (AMTB) 10-Q 29 Apr 22 2022 Q1 Quarterly report Financial data

Cover Page

Cover Page - shares	3 Months Ended
	Mar. 31, 2022	Apr. 28, 2022
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2022
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	460-4038
Title of 12(b) Security	Class A Common Stock
Trading Symbol	AMTB
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		34,194,664
Entity Central Index Key	0001734342
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q1
Amendment Flag	false

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Assets
Cash and due from banks	$ 35,242	$ 33,668
Interest earning deposits with banks	234,709	240,540
Restricted cash	6,243	0
Cash and cash equivalents	276,194	274,208
Securities
Debt securities available for sale	1,145,785	1,175,319
Debt securities held to maturity	112,008	118,175
Equity securities with readily determinable fair value not held for trading	13,370	252
Federal Reserve Bank and Federal Home Loan Bank stock	53,806	47,495
Securities	1,324,969	1,341,241
Loans held for sale, at lower of cost or fair value	68,591	143,195
Mortgage loans held for sale, at fair value	17,108	14,905
Loans held for investment, gross	5,635,478	5,409,440
Less: Allowance for loan losses	56,051	69,899
Loans held for investment, net	5,579,427	5,339,541
Bank owned life insurance	224,348	223,006
Premises and equipment, net	37,929	37,860
Deferred tax assets, net	22,119	11,301
Operating lease right-of-use assets	139,477	141,139
Goodwill	19,506	19,506
Accrued interest receivable and other assets	96,168	92,497
Total assets	7,805,836	7,638,399
Deposits
Noninterest bearing	1,318,294	1,183,251
Interest bearing	1,543,708	1,507,441
Savings and money market	1,581,412	1,602,339
Time	1,248,287	1,337,840
Total deposits	5,691,701	5,630,871
Advances from the Federal Home Loan Bank	980,047	809,577
Senior notes	58,973	58,894
Subordinated notes	29,156	0
Junior subordinated debentures held by trust subsidiaries	64,178	64,178
Operating lease liabilities	135,651	136,595
Accounts payable, accrued liabilities and other liabilities	96,734	106,411
Total liabilities	7,056,440	6,806,526
Contingencies (Note 17)
Stockholders’ equity
Class A common stock, $0.10 par value, 250 million shares authorized; 34,350,822 shares issued and outstanding (2021 - 35,883,320 shares issued and outstanding)	3,434	3,589
Additional paid in capital	208,109	262,510
Retained earnings	565,963	553,167
Accumulated other comprehensive (loss) income	(24,424)	15,217
Total stockholders' equity before noncontrolling interest	753,082	834,483
Noncontrolling interest	(3,686)	(2,610)
Total stockholders' equity	749,396	831,873
Total liabilities and stockholders' equity	$ 7,805,836	$ 7,638,399

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2022	Dec. 31, 2021
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)	34,350,822	35,883,320
Common stock, shares outstanding (in shares)	34,350,822	35,883,320
Class A Common Stock
Common stock, par value (in dollars per share)	$ 0.10

Consolidated Statements of Oper

Consolidated Statements of Operations and Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Interest income
Loans	$ 56,338	$ 52,771
Investment securities	8,628	7,507
Interest earning deposits with banks	132	51
Total interest income	65,098	60,329
Interest expense
Interest bearing demand deposits	290	113
Savings and money market deposits	745	980
Time deposits	4,281	7,360
Advances from the Federal Home Loan Bank	2,481	2,758
Senior notes	942	942
Subordinated notes	88	0
Junior subordinated debentures	626	607
Total interest expense	9,453	12,760
Net interest income	55,645	47,569
(Reversal of) provision for loan losses	(10,000)	0
Net interest income after (reversal of) provision for loan losses	65,645	47,569
Noninterest income
Deposits and service fees	4,620	4,106
Brokerage, advisory and fiduciary activities	4,596	4,603
Loan-level derivative income	3,152	232
Change in cash surrender value of bank owned life insurance	1,342	1,356
Securities gains, net	769	2,582
Cards and trade finance servicing fees	590	339
Loss on early extinguishment of advances from the Federal Home Loan Bank, net	(714)	0
Derivative losses, net	(1,345)	0
Other noninterest income	1,015	945
Total noninterest income	14,025	14,163
Noninterest expense
Salaries and employee benefits	30,403	26,427
Occupancy and equipment	6,725	4,488
Telecommunication and data processing	4,038	3,727
Professional and other services fees	7,182	3,784
Advertising expenses	2,972	316
Depreciation and amortization	1,152	1,786
FDIC assessments and insurance	1,396	1,755
Loans held for sale valuation expense	459	0
Contract termination costs	4,012	0
Other operating expenses	2,479	1,342
Total noninterest expenses	60,818	43,625
Income before income tax expense	18,852	18,107
Income tax expense	(3,978)	(3,648)
Net income before attribution of noncontrolling interest	14,874	14,459
Noncontrolling interest	(1,076)	0
Net income attributable to Amerant Bancorp Inc.	15,950	14,459
Other comprehensive loss, net of tax
Net unrealized holding losses on debt securities available for sale arising during the period	(39,637)	(9,466)
Net unrealized holding gains on cash flow hedges arising during the period	124	36
Reclassification adjustment for items included in net income	(128)	(2,325)
Other comprehensive loss	(39,641)	(11,755)
Comprehensive (loss) income	$ (23,691)	$ 2,704
Earnings Per Share (Note 19):
Basic earnings per common share (in dollars per share)	$ 0.46	$ 0.38
Diluted earnings per common share (in dollars per share)	$ 0.45	$ 0.38

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Class A	Class B	Total Stockholders' Equity Before Noncontrolling Interest	Total Stockholders' Equity Before Noncontrolling InterestClass A	Common StockClass A	Common StockClass B	Additional Paid in Capital	Treasury Stock	Treasury StockClass A	Treasury StockClass B	Retained Earnings	Accumulated Other Comprehensive Income (loss)	Noncontrolling interest
Beginning balance (in shares) at Dec. 31, 2020						28,806,344	9,036,352
Beginning balance at Dec. 31, 2020	$ 783,421					$ 2,882	$ 904	$ 305,569	$ 0			$ 442,402	$ 31,664
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchase of common stock (in shares)							(116,037)
Repurchase of common stock			$ (1,855)								$ (1,855)
Treasury stock retired	0					$ 0	$ (12)	(1,843)	1,855
Restricted stock issued (in shares)						196,015
Restricted stock issued	0					$ 22		(22)
Restricted stock surrendered (in shares)						(713)
Restricted stock surrendered	(13)					$ 0		(13)
Stock-based compensation expense	757							757
Net income (loss) attributable to Amerant Bancorp Inc.	14,459											14,459
Net loss attributable to noncontrolling-interest shareholders	0
Other comprehensive (loss) income	(11,755)												(11,755)
Ending balance (in shares) at Mar. 31, 2021						29,001,646	8,920,315
Ending balance at Mar. 31, 2021	$ 785,014					$ 2,904	$ 892	304,448	0			456,861	19,909
Beginning balance (in shares) at Dec. 31, 2021	35,883,320					35,883,320
Beginning balance at Dec. 31, 2021	$ 831,873			$ 834,483		$ 3,589		262,510	0			553,167	15,217	$ (2,610)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchase of common stock (in shares)						(1,643,480)
Repurchase of 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 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 (loss) attributable to Amerant Bancorp Inc.	15,950			15,950								15,950
Dividends paid	(3,154)			(3,154)								(3,154)
Net loss attributable to noncontrolling-interest shareholders	(1,076)			0										(1,076)
Other comprehensive (loss) income	$ (39,641)			(39,641)									(39,641)
Ending balance (in shares) at Mar. 31, 2022	34,350,822					34,350,822
Ending balance at Mar. 31, 2022	$ 749,396			$ 753,082		$ 3,434		$ 208,109	$ 0			$ 565,963	$ (24,424)	$ (3,686)

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash flows from operating activities
Net income before attribution of noncontrolling interest	$ 14,874	$ 14,459
Adjustments to reconcile net income to net cash (used in) provided by operating activities
(Reversal of) provision for loan losses	(10,000)	0
Net premium amortization on securities	2,294	3,591
Depreciation and amortization	1,152	1,786
Stock-based compensation expense	1,260	757
Change in cash surrender value of bank owned life insurance	(1,342)	(1,356)
Securities gains, net	(769)	(2,582)
Derivative losses, net	1,345	0
Deferred taxes and others	3,172	(99)
Loss on early extinguishment of advances from the FHLB, net	714	0
Proceeds from sales and repayments of loans held for sale (at fair value)	33,464	0
Originations of loans held for sale (at fair value)	(45,995)	0
Net changes in operating assets and liabilities:
Accrued interest receivable and other assets	(243)	(3,229)
Accounts payable, accrued liabilities and other liabilities	(12,044)	(6,305)
Net cash (used in) provided by operating activities	(12,118)	7,022
Purchases of investment securities:
Available for sale	(95,113)	(96,197)
Held to maturity securities	0	(50,274)
Equity securities with readily determinable fair value not held for trading	(12,656)	0
Federal Home Loan Bank stock	(13,130)	0
Purchases of investment securities	(120,899)	(146,471)
Maturities, sales, calls and paydowns of investment securities:
Available for sale	69,517	115,125
Held to maturity	6,010	3,578
Federal Home Loan Bank stock	6,819	8,547
Equity securities with readily determinable fair value not held for trading	252	0
Maturities, sales, calls and paydowns of investment securities	82,598	127,250
Net (increase) decrease in loans	(204,536)	86,376
Proceeds from loan sales	58,566	1,173
Net purchases of premises and equipment and others	(1,917)	(805)
Net cash (used in) provided by investing activities	(186,188)	67,523
Cash flows from financing activities
Net increase in demand, savings and money market accounts	150,383	105,868
Net decrease in time deposits	(89,553)	(159,432)
Proceeds from Advances from the Federal Home Loan Bank	350,000	0
Repayments of Advances from the Federal Home Loan Bank	(180,714)	0
Proceeds from issuance of subordinated notes, net of issuance costs	29,146	0
Repurchase of common stock - Class A	(54,820)	0
Dividend paid	(3,154)	0
Repurchase of common stock - Class B	0	(1,855)
Common stock surrendered	(996)	(13)
Net cash provided by (used in) financing activities	200,292	(55,432)
Net increase in cash and cash equivalents	1,986	19,113
Cash and cash equivalents
Beginning of period	274,208	214,386
End of period	276,194	233,499
Supplemental disclosures of cash flow information
Cash paid for Interest	7,566	11,736
Cash paid for Income taxes	239	324
Right-of-use assets obtained in exchange for new lease obligations	1,122	0
Initial recognition of operating lease right-of-use assets	0	55,670
Initial recognition of operating lease liabilities	0	56,024
Noncash investing activities:
Mortgage loans held for sale (at fair value) transferred to loans held for investment	$ 9,848	$ 0

Business, Basis of Presentation

Business, Basis of Presentation and Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [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% indirect 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 Reserve Bank of Atlanta (“Federal Reserve”) and the Federal Home Loan Bank of Atlanta (“FHLB”). The Bank has three operating subsidiaries, Amerant Investments, Inc., a securities broker-dealer (“Amerant Investments”), Amerant Mortgage, LLC (“Amerant Mortgage”), a 57.4%-owned mortgage lending company domiciled in Florida, and Elant Bank & Trust, Grand-Cayman based trust company subsidiary acquired in November 2019 (the “Cayman Bank”). The Company’s Class A common stock, par value $0.10 per common share, is listed and traded on the Nasdaq Global Select Market under the symbol “AMTB”. Restructuring Activities The Company continues to work on better aligning its operating structure and resources with its business activities. During the three months ended March 31, 2022, the Company recorded estimated contract termination costs and related costs of approximately $4.0 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. The Company expects to incur additional contract termination costs once existing vendor relationships are terminated in connection with the implementation of this agreement that cannot be reasonably determined at this time. During the three months ended March 31, 2022, the Company recorded severance costs of approximately $0.8 million (none in the three months ended March 31, 2021) primarily in connection of the reorganization of its business-generating units in the period. These costs are included in “salaries and employees benefits expense” in the Company’s consolidated statement of operations and comprehensive (loss) income. Other restructuring expenses during the three months ended March 31, 2022 and 2021 included legal and consulting fees of $1.2 million and $0.2 million, respectively, mainly related to consulting services received in the period and other expenses. Stock Repurchase Programs In January 2022, the Company repurchased an aggregate of 652,118 shares of Class A common stock at a weighted average price of $33.96 per share, 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. 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 “New Common Stock Repurchase Program”). Repurchases under the New Common Stock Repurchase Program may be made in the open market, by block purchase, in privately negotiated transactions or otherwise in compliance with Rule 10b-18 under the Securities Exchange Act of 1934, as amended (the “Exchange Act”). Repurchases of the Company’s shares of Class A common stock (and the timing thereof) will depend upon market conditions, regulatory requirements, other corporate liquidity requirements and priorities and other factors as may be considered in the Company’s sole discretion. Repurchases may also be made pursuant to a trading plan under Rule 10b5-1 under the Exchange Act, which would permit shares to be repurchased when the Company might otherwise be precluded from doing so because of self-imposed trading blackout periods or other regulatory restrictions. The New Common Stock Repurchase Program does not obligate the Company to repurchase any particular amount of Class A common stock and may be suspended or discontinued at any time without notice. The Company repurchased an aggregate of 991,362 shares of Class A common stock at a weighted average price of $32.96 per share, under the New Common Stock Repurchase Program, through March 31, 2022. The aggregate purchase price for these transactions was approximately $32.7 million, including transaction costs. As of April 26, 2022, the Company has repurchased an additional 168,190 shares of Class A common stock at a weighted average price of $30.11 under the New Common Stock Repurchase Program. The aggregate purchase price for these transactions was approximately $5.1 million, including transaction costs. For more information about these repurchase programs, see Note 17 to the Company’s consolidated financial statements on Form 10-K for the year ended December 31, 2021. Amerant Mortgage On March 31, 2022, the Company contributed $1.5 million in cash to Amerant Mortgage, increasing its ownership interest to 57.4% as of March 31, 2022 from 51% as of December 31, 2021. This additional contribution had no material impact to the Company’s share of the results of operations of Amerant Mortgage for the three months ended March 31, 2022. COVID-19 Pandemic CARES Act On March 11, 2020, the World Health Organization recognized an outbreak of a novel strain of the coronavirus, COVID-19, as a pandemic. The COVID-19 pandemic adversely affected the economy, including lower interest rates, and resulted in the enactment of the Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”). Loan Loss Reserve and Modification Programs On March 26, 2020, the Company began offering loan payment relief options to customers impacted by the COVID-19 pandemic, including interest only and/or forbearance options. These programs continued throughout 2020 and in the first half of 2021. As of March 31, 2022, there were no loans under the deferral and/or forbearance options. At the December 31, 2021, there were $37.1 million of loans under the deferral and/or forbearance options. In accordance with accounting and regulatory guidance, loans to borrowers benefiting from these measures are not considered troubled debt restructuring (“TDRs”). See “Item 7. Management’s Discussion and Analysis Of Financial Condition And Results Of Operations” included in the annual report on Form 10-K for the year ended December 31, 2021, filed with the Securities and Exchange Commission (“SEC”), on March 4, 2022 (the “Form 10-K”) for more details on Loan Modification Programs.. The COVID-19 pandemic has severely restricted the level of economic activity in the U.S. and around the world since March 2020. At the outset of the pandemic, several states and cities across the United States, including the states of Florida, and Texas and cities where we have banking centers, loan production offices (“LPOs”) and where our principal place of business is located, implemented quarantines, restrictions on travel, “shelter at home” orders, and restrictions on types of business that may continue to operate. While most of these measures and restrictions have been lifted, and many businesses reopened, the Company cannot predict when circumstances may change and whether restrictions that have been lifted will need to be imposed or tightened in the future if viewed as necessary due to public health concerns. Given the uncertainty regarding the spread and severity of the COVID-19 pandemic and its adverse effects on the U.S. and global economies, the impact to the Company’s financial statements cannot be accurately predicted at this time. b) Basis of Presentation and Summary of 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, 2021 and 2020 and for each of the three years in the period ended December 31, 2021 and the accompanying footnote disclosures for the Company, which are included in the Form 10-K. For a complete summary of our significant accounting policies, please see Note 1 to the Company’s audited consolidated financial statements in the Company’s annual report on the 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 loan losses; (ii) the fair values of securities and the value assigned to goodwill during periodic goodwill impairment tests; (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. In the first quarter of 2022, noninterest expenses include $4.0 million of estimated contract termination costs associated with third party vendors resulting from the Company’s transition to our new technology provider. Contract termination costs represent estimated expenses to terminate contracts before the end of their terms, and are recognized when the Company terminates a contract in accordance with its terms, generally considered the time when the Company gives written notice to the counterparty within the notification period contractually established. Contract termination costs also include expenses associated with the abandonment of existing capitalized projects which are no longer expected to be completed as a result of a contract termination. Changes to initial estimated expenses to terminate contracts resulting from revisions to timing or the amount of estimated cash flows are recognized in the period of the changes. Reclassifications In the three months ended March 31, 2022, advertising expenses are presented separately in the Company’s consolidated statement of operations and comprehensive (loss) income. Prior to 2022, these expenses were presented as component of other noninterest expenses in the Company’s consolidated statement of operations and comprehensive (loss) income. c) Recently Issued Accounting Pronouncements The Company adopted no new accounting pronouncements as of and for the three months ended March 31, 2022. There were no newly-issued accounting pronouncements that may be significant to the Company’s consolidated financial statements. Issued and Not Yet Adopted For a complete summary of accounting guidance, including new guidance on accounting for current expected credit losses on financial instruments (“CECL”), which is pending adoption by the Company, see Note 1 to the Company’s audited consolidated financial statements in the Company’s annual report on the Form 10-K. In March 2022, the Financial Accounting Standards Board (‘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 nonprepayable 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 is in the process of reviewing this new guidance to determine whether it would have a material impact on the Company’s consolidated financial statements when adopted. In March 2022, the FASB issued guidance that eliminates the recognition and measurement guidance on troubled debt restructurings 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 new 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 is permitted if an entity has already adopted the guidance on accounting for CECL. The Company is in the process of reviewing this new guidance, as part of its CECL implementation efforts, to determine whether it would have a material impact on the Company’s consolidated financial statements when adopted. d) Subsequent Events

Interest Earning Deposits with

Interest Earning Deposits with Banks and Restricted Cash	3 Months Ended
	Mar. 31, 2022
Cash and Cash Equivalents [Abstract]
Interest Earning Deposits with Banks and Restricted Cash	Interest Earning Deposits with Banks and Restricted Cash At March 31, 2022 and December 31, 2021, interest earning deposits with banks are mainly comprised of deposits with the Federal Reserve and other U.S. banks of approximately $235 million and $241 million, respectively. At March 31, 2022 and December 31, 2021, the average interest rate on these deposits was approximately 0.21% and 0.12%, respectively. These deposits mature within one year. At March 31, 2022, the Company had restricted cash balances of $6.2 million. These balances include cash pledged as collateral, by other banks to us, to secure derivatives’ margin calls. In addition, we have cash balances pledged as collateral to secure the issuance of letters of credit by other banks on behalf of our customers. We had no restricted cash balances as of December 31, 2021.

Securities

Securities	3 Months Ended
	Mar. 31, 2022
Investments, Debt and Equity Securities [Abstract]
Securities	Securities a) Debt Securities Debt securities available for sale Amortized cost and approximate fair values of debt securities available for sale are summarized as follows: March 31, 2022 Amortized Gross Unrealized Estimated (in thousands) Gains Losses U.S. government-sponsored enterprise debt securities $ 407,490 $ 944 $ (14,033) $ 394,401 Corporate debt securities 365,730 1,994 (8,439) 359,285 U.S. government agency debt securities 401,270 414 (18,147) 383,537 Collateralized loan obligations 5,000 — — 5,000 Municipal bonds 2,062 3 (3) 2,062 U.S. treasury securities 1,500 — — 1,500 Total debt securities available for sale (1) $ 1,183,052 $ 3,355 $ (40,622) $ 1,145,785 __________________ (1) As of March 31, 2022, includes residential and commercial mortgage-backed securities with amortized cost of $669.1 million and $116.8 million, respectively, and fair value of $643.1 million and $111.6 million, respectively. December 31, 2021 Amortized Gross Unrealized Estimated (in thousands) Gains Losses U.S. government sponsored enterprise debt securities $ 443,892 $ 9,319 $ (2,438) $ 450,773 Corporate debt securities 348,576 10,143 (929) 357,790 U.S. government agency debt securities 362,323 1,953 (2,370) 361,906 U.S. treasury securities 2,501 1 — 2,502 Municipal bonds 2,252 96 — 2,348 Total debt securities available for sale (1) $ 1,159,544 $ 21,512 $ (5,737) $ 1,175,319 __________________ (1) As of December 31, 2021, includes residential and commercial mortgage-backed securities with amortized cost of $654.7 million and $123.5 million, respectively, and fair value of $661.3 million and $123.8 million, respectively. The Company had investments in foreign corporate debt securities available for sale of $10.8 million and $12.5 million at March 31, 2022 and December 31, 2021, respectively. At March 31, 2022 and December 31, 2021, the Company had no foreign sovereign or foreign government agency debt securities available for sale. In the three month periods ended March 31, 2022 and 2021, proceeds from sales, redemptions and calls, gross realized gains, gross realized losses of debt securities available for sale were as follows: Three Months Ended March 31, (in thousands) 2022 2021 Proceeds from sales, redemptions and calls of debt securities available for sale $ 14,013 $ 43,854 Gross realized gains $ 49 $ 2,947 Gross realized losses — — Realized gains, net on sales of debt investment securities $ 49 $ 2,947 The Company’s investment in debt securities available for sale with unrealized losses that are deemed temporary, aggregated by the length of time that individual securities have been in a continuous unrealized loss position, are summarized below: March 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 162 $ 320,537 $ (10,917) 61 $ 30,500 $ (3,116) $ 351,037 $ (14,033) Corporate debt securities 39 196,600 (7,605) 3 10,124 (834) 206,724 (8,439) U.S. government agency debt securities 67 319,930 (16,999) 74 46,956 (1,148) 366,886 (18,147) Municipal bonds 1 426 (3) — — — 426 (3) 269 $ 837,493 $ (35,524) 138 $ 87,580 $ (5,098) $ 925,073 $ (40,622) December 31, 2021 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 29 $ 54,562 $ (1,434) 59 $ 25,526 $ (1,004) $ 80,088 $ (2,438) Corporate debt securities 8 52,672 (259) 3 10,286 (670) 62,958 (929) U.S. government agency debt securities 35 200,051 (1,177) 69 52,109 (1,193) 252,160 (2,370) 72 $ 307,285 $ (2,870) 131 $ 87,921 $ (2,867) $ 395,206 $ (5,737) At March 31, 2022 and December 31, 2021, the Company held certain debt securities issued or guaranteed by the U.S. government and U.S. government-sponsored entities and agencies. The Company believes these issuers present little credit risk. The Company considers these securities are not other-than-temporarily impaired because the decline in fair value is attributable to changes in interest rates and investment securities markets, generally, and not credit quality. 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. Investments in corporate debt available for sale as of March 31, 2022 include securities considered “investment-grade-quality” primarily issued by financial institutions, with a fair value of $170.0 million ($43.4 million at December 31, 2021), which had total unrealized losses of $6.9 million at that date ($0.3 million at December 31, 2021); and securities considered “non-investment-grade-quality” from issuers in the mortgage, communications and technology industries, with a fair value of $36.7 million ($19.6 million at December 31, 2021), which had total unrealized losses of $1.6 million at that date ($0.6 million at December 31, 2021). Unrealized losses on corporate debt securities and municipal bonds are attributable to changes in interest rates and investment securities markets, generally, and as a result, temporary in nature. The Company considers these securities are not other-than-temporarily impaired because the issuers of these debt securities are considered to be high quality, and generally present little credit risk. The Company does not intend to sell these investments and it is more likely than not that it will not be required to sell these investments before their anticipated recovery. Debt securities held to maturity Amortized cost and approximate fair values of debt securities held to maturity are summarized as follows: March 31, 2022 Amortized Gross Unrealized Estimated (in thousands) Gains Losses U.S. government agency debt securities $ 64,143 $ — $ (3,816) $ 60,327 U.S. government sponsored enterprise debt securities 47,865 — (2,656) 45,209 Total debt securities held to maturity (1) $ 112,008 $ — $ (6,472) $ 105,536 __________________ (1) As of March 31, 2022, includes residential and commercial mortgage-backed securities with amortized cost of $83.4 million and $28.7 million, respectively, and fair value of $77.9 million and $27.6 million, respectively. December 31, 2021 Amortized Gross Unrealized Estimated (in thousands) Gains Losses U.S. government agency debt securities $ 66,307 $ 62 $ (363) $ 66,006 U.S. government sponsored enterprise debt securities 51,868 1,581 (378) 53,071 Total debt securities held to maturity (1) $ 118,175 $ 1,643 $ (741) $ 119,077 __________________ (1) As of December 31, 2021, includes residential and commercial mortgage-backed securities with amortized cost of $89.4 million and $28.8 million, respectively, and fair value of $88.7 million and $30.4 million, respectively. The Company’s investment in debt securities held to maturity with unrealized losses that are deemed temporary, aggregated by length of time that individual securities have been in a continuous unrealized loss position, are summarized below: March 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 $ 60,327 $ (3,816) — $ — $ — $ 60,327 $ (3,816) U.S. government sponsored enterprise debt securities 9 35,351 (1,401) 1 9,858 (1,255) 45,209 (2,656) 21 $ 95,678 $ (5,217) 1 $ 9,858 $ (1,255) $ 105,536 $ (6,472) December 31, 2021 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 11 $ 61,037 $ (363) — $ — $ — $ 61,037 $ (363) U.S. government sponsored enterprise debt securities 2 22,669 (378) — — — 22,669 (378) 13 $ 83,706 $ (741) — $ — $ — $ 83,706 $ (741) Contractual maturities Contractual maturities of debt securities at March 31, 2022 are as follows: Available for Sale Held to Maturity (in thousands) Amortized Estimated Amortized Estimated Within 1 year $ 25,333 $ 25,432 $ — $ — After 1 year through 5 years 100,274 99,454 8,101 7,732 After 5 years through 10 years 312,215 306,855 11,130 10,785 After 10 years 745,230 714,044 92,777 87,019 $ 1,183,052 $ 1,145,785 $ 112,008 $ 105,536 b) Equity securities with readily available fair value not held for trading As of March 31, 2022 and December 31, 2021, the Company had equity securities with readily available fair value not held for trading with an original cost of $12.7 million and $0.3 million, and fair value of $13.4 million $0.3 million, respectively. These equity securities have no stated maturities. The Company recognized net unrealized gain of $0.7 million and net unrealized loss of $0.4 million in the three months ended March 31, 2022 and 2021, respectively, related to the change in market value these equity securities. c) Securities Pledged As of March 31, 2022 and December 31, 2021, the Company had $485.3 million and $142.8 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	3 Months Ended
	Mar. 31, 2022
Receivables [Abstract]
Loans	Loans a) Loans held for investment Loans held for investment consist of the following loan classes: (in thousands) March 31, December 31, Real estate loans Commercial real estate Non-owner occupied $ 1,570,006 $ 1,540,590 Multi-family residential 540,726 514,679 Land development and construction loans 296,609 327,246 2,407,341 2,382,515 Single-family residential 707,594 661,339 Owner occupied 927,921 962,538 4,042,856 4,006,392 Commercial loans 1,093,205 965,673 Loans to financial institutions and acceptances 13,730 13,710 Consumer loans and overdrafts 485,687 423,665 Total loans held for investment $ 5,635,478 $ 5,409,440 At March 31, 2022 and December 31, 2021, loans with an outstanding principal balance of $0.8 billion and $1.1 billion, respectively, were pledged as collateral to secure advances from the FHLB. The amounts above include loans under syndication facilities of approximately $342 million and $373 million at March 31, 2022 and December 31, 2021, 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 $395.7 million and $297.0 million at March 31, 2022 and December 31, 2021, respectively. International loans included above were $112.9 million and $99.6 million at March 31, 2022 and December 31, 2021, respectively. The age analysis of the loan portfolio held for investment by class, including nonaccrual loans, as of March 31, 2022 and December 31, 2021 are summarized in the following tables: March 31, 2022 Total Loans, Past Due Total Loans in Total Loans (in thousands) Current 30-59 60-89 Greater than Total Past Real estate loans Commercial real estate Non-owner occupied $ 1,570,006 $ 1,570,006 $ — $ — $ — $ — $ 12,825 $ — Multi-family residential 540,726 540,726 — — — — — — Land development and construction loans 296,609 296,609 — — — — — — 2,407,341 2,407,341 — — — — 12,825 — Single-family residential 707,594 703,003 2,743 436 1,412 4,591 3,717 — Owner occupied 927,921 926,118 145 263 1,395 1,803 10,770 — 4,042,856 4,036,462 2,888 699 2,807 6,394 27,312 — Commercial loans 1,093,205 1,080,403 995 338 11,469 12,802 19,178 — Loans to financial institutions and acceptances 13,730 13,730 — — — — — — Consumer loans and overdrafts 485,687 485,656 16 — 15 31 468 10 $ 5,635,478 $ 5,616,251 $ 3,899 $ 1,037 $ 14,291 $ 19,227 $ 46,958 $ 10 December 31, 2021 Total Loans, Past Due Total Loans in Total Loans (in thousands) Current 30-59 60-89 Greater than Total Past Real estate loans Commercial real estate Non-owner occupied $ 1,540,590 $ 1,540,590 $ — $ — $ — $ — $ 7,285 $ — Multi-family residential 514,679 514,679 — — — — — — Land development and construction loans 327,246 327,246 — — — — — — 2,382,515 2,382,515 — — — — 7,285 — Single-family residential 661,339 657,882 990 412 2,055 3,457 5,126 — Owner occupied 962,538 961,132 — — 1,406 1,406 8,665 — 4,006,392 4,001,529 990 412 3,461 4,863 21,076 — Commercial loans 965,673 939,685 277 1,042 24,669 25,988 28,440 — Loans to financial institutions and acceptances 13,710 13,710 — — — — — — Consumer loans and overdrafts 423,665 423,624 22 7 12 41 257 8 $ 5,409,440 $ 5,378,548 $ 1,289 $ 1,461 $ 28,142 $ 30,892 $ 49,773 $ 8 In January 2022, the Company collected a partial payment of approximately $9.8 million on one commercial nonaccrual loan with a carrying value of $12.4 million. Also, in January 2022, the Company charged-off the remaining balance of this loan of $2.5 million against its specific reserve at December 31, 2021. b) Loans held for sale Loans held for sale consist of the following loan classes: (in thousands) March 31, December 31, Loans held for sale at the lower of cost or fair value Real estate loans Commercial real estate Non-owner occupied $ 46,947 $ 110,271 Multi-family residential 20,796 31,606 67,743 141,877 Owner occupied 1,306 1,318 Total real estate loans 69,049 143,195 Less: valuation allowance 458 — Total loans held for sale at the lower of fair value or cost 68,591 143,195 Loans held for sale at fair value Land development and construction loans 836 — Single-family residential 16,272 14,905 Total loans held for sale at fair value (1) 17,108 14,905 Total loans held for sale (2) $ 85,699 $ 158,100 _______________ (1) Loans held for sale in connection with Amerant Mortgage ongoing business. (2) Remained current and in accrual status as of March 31, 2022. In the first quarter of 2022, the Company completed the sale of approximately $57.3 million in loans held for sale carried at the lower of fair value or cost related to the New York portfolio, at their par value. c) Subsequent Events In April 2022, the Company completed the sale of one commercial non-accrual loan of approximately $5.8 million, at its par value.

Allowance for Loan Losses

Allowance for Loan Losses	3 Months Ended
	Mar. 31, 2022
Receivables [Abstract]
Allowance for Loan Losses	Allowance for Loan Losses The analyses by loan segment of the changes in the allowance for loan losses (“ALL”) for the three months ended March 31, 2022 and 2021, and its allocation by impairment methodology and the related investment in loans, net as of March 31, 2022 and 2021 are summarized in the following tables: Three Months Ended March 31, 2022 (in thousands) Real Estate Commercial Financial Consumer Total Balance at beginning of the period $ 17,952 $ 38,979 $ 42 $ 12,926 $ 69,899 Reversal of loan losses (5,594) (2,585) (1) (1,820) (10,000) Loans charged-off Domestic — (3,275) — (1,043) (4,318) International — — — (4) (4) Recoveries 4 300 — 170 474 Balance at end of the period $ 12,362 $ 33,419 $ 41 $ 10,229 $ 56,051 Allowance for loan losses by impairment methodology: Individually evaluated $ 477 $ 6,021 $ — $ 718 $ 7,216 Collectively evaluated 11,885 27,398 41 9,511 48,835 $ 12,362 $ 33,419 $ 41 $ 10,229 $ 56,051 Investment in loans, net of unearned income: Individually evaluated $ 12,825 $ 32,500 $ — $ 4,427 $ 49,752 Collectively evaluated 2,362,355 2,184,495 13,730 1,025,146 5,585,726 $ 2,375,180 $ 2,216,995 $ 13,730 $ 1,029,573 $ 5,635,478 Three Months Ended March 31, 2021 (in thousands) Real Estate Commercial Financial Consumer Total Balance at beginning of the period $ 50,227 $ 48,130 $ 1 $ 12,544 $ 110,902 Provision for loan losses (1,936) 702 — 1,234 — Loans charged-off Domestic — (235) — (431) (666) International — — — — — Recoveries — 605 — 99 704 Balance at end of the period $ 48,291 $ 49,202 $ 1 $ 13,446 $ 110,940 Allowance for loan losses by impairment methodology: Individually evaluated $ 2,918 $ 26,665 $ — $ 1,077 $ 30,660 Collectively evaluated 45,373 22,537 1 12,369 80,280 $ 48,291 $ 49,202 $ 1 $ 13,446 $ 110,940 Investment in loans, net of unearned income: Individually evaluated $ 19,892 $ 60,891 $ — $ 8,261 $ 89,044 Collectively evaluated 2,742,923 2,154,463 18,073 749,291 5,664,750 $ 2,762,815 $ 2,215,354 $ 18,073 $ 757,552 $ 5,753,794 The following is a summary of net proceeds from sales of loans held for investment by portfolio segment: Three Months Ended March 31, (in thousands) Real Estate Commercial Financial Consumer Total 2022 $ — $ — $ — $ 1,313 $ 1,313 2021 $ — $ — $ — $ 1,173 $ 1,173 The following is a summary of impaired loans as of March 31, 2022 and December 31, 2021: March 31, 2022 Recorded Investment (in thousands) With a Valuation Allowance Without a Valuation Allowance Total Year Average (1) Total Unpaid Principal Balance Valuation Allowance Real estate loans Commercial real estate Non-owner occupied $ 1,360 $ 11,465 $ 12,825 $ 24,260 $ 12,887 $ 477 Multi-family residential — — — 2,482 — — Land development and construction — — — — — — 1,360 11,465 12,825 26,742 12,887 477 Single-family residential 2,267 1,694 3,961 5,842 3,917 413 Owner occupied 406 10,363 10,769 10,438 10,621 137 4,033 23,522 27,555 43,022 27,425 1,027 Commercial loans 10,410 11,321 21,731 34,737 25,023 5,884 Consumer loans and overdrafts 466 — 466 318 467 305 $ 14,909 $ 34,843 $ 49,752 $ 78,077 $ 52,915 $ 7,216 _______________ (1) Average using trailing four quarter balances. December 31, 2021 Recorded Investment (in thousands) With a Valuation Allowance Without a Valuation Allowance Total Year Average (1) Total Unpaid Principal Balance Valuation Allowance Real estate loans Commercial real estate Non-owner occupied $ 1,452 $ 5,833 $ 7,285 $ 23,185 $ 7,349 $ 546 Multi-family residential — — — 5,324 — — Land development and construction loans — — — — — — 1,452 5,833 7,285 28,509 7,349 546 Single-family residential 3,689 1,689 5,378 7,619 5,316 618 Owner occupied 516 8,149 8,665 10,877 8,491 170 5,657 15,671 21,328 47,005 21,156 1,334 Commercial loans 21,353 9,767 31,120 40,626 59,334 10,292 Consumer loans and overdrafts 256 — 256 268 256 165 $ 27,266 $ 25,438 $ 52,704 $ 87,899 $ 80,746 $ 11,791 _______________ (1) Average using trailing four quarter balances. Troubled Debt Restructurings The following table shows information about loans modified in TDRs as of March 31, 2022 and December 31, 2021: As of March 31, 2022 As of December 31, 2021 (in thousands) Number of Contracts Recorded Investment Number of Contracts Recorded Investment Real estate loans Commercial real estate Non-owner occupied 1 $ 1,360 1 $ 1,452 Single-family residential 1 268 1 258 Owner occupied 4 6,071 4 6,213 6 7,699 6 7,923 Commercial loans 11 4,505 11 5,005 Total (1)(2) 17 $ 12,204 17 $ 12,928 ______________ (1) As of March 31, 2022 and December 31, 2021, includes a multiple loan relationship with a South Florida customer consisting of CRE, owner occupied and commercial loans totaling $8.6 million and $9.1 million, respectively. This TDR consisted of extending repayment terms and adjusting future periodic payments which resulted in no additional reserves. As of March 31, 2022 and December 31, 2021, this relationship included two residential loans totaling $1.4 million and one commercial loan of $0.8 million, which were not modified. During 2020, the company charged off $1.9 million against the ALL associated with this commercial loan relationship. The Company believes the specific reserves associated with these loans, which total $0.6 million and $0.8 million at March 31, 2022 and December 31, 2021, respectively, are adequate to cover probable losses given current facts and circumstances. (2) There were no new TDRs in the three months ended March 31, 2022. In addition, during the three months ended March 31, 2022, there were no TDR loans that subsequently defaulted within the 12 months of restructuring. Loans by Credit Quality Indicators Loans by credit quality indicators as of March 31, 2022 and December 31, 2021 are summarized in the following tables: March 31, 2022 Credit Risk Rating Nonclassified Classified (in thousands) Pass Special Mention Substandard Doubtful Loss Total Real estate loans Commercial real estate Non-owner occupied $ 1,553,960 $ 3,221 $ 11,522 $ 1,303 $ — $ 1,570,006 Multi-family residential 540,726 — — — — 540,726 Land development and construction loans 296,609 — — — — 296,609 2,391,295 3,221 11,522 1,303 — 2,407,341 Single-family residential 703,782 — 3,812 — — 707,594 Owner occupied 909,676 7,383 10,862 — — 927,921 4,004,753 10,604 26,196 1,303 — 4,042,856 Commercial loans 1,047,152 25,545 18,519 1,989 — 1,093,205 Loans to financial institutions and acceptances 13,730 — — — — 13,730 Consumer loans and overdrafts 485,219 — 468 — — 485,687 $ 5,550,854 $ 36,149 $ 45,183 $ 3,292 $ — $ 5,635,478 December 31, 2021 Credit Risk Rating Nonclassified Classified (in thousands) Pass Special Mention Substandard Doubtful Loss Total Real estate loans Commercial real estate Non-owner occupied $ 1,499,100 $ 34,205 $ 5,890 $ 1,395 $ — $ 1,540,590 Multi-family residential 514,679 — — — — 514,679 Land development and construction loans 327,246 — — — — 327,246 2,341,025 34,205 5,890 1,395 — 2,382,515 Single-family residential 656,118 — 5,221 — — 661,339 Owner occupied 946,350 7,429 8,759 — — 962,538 3,943,493 41,634 19,870 1,395 — 4,006,392 Commercial loans 903,400 32,452 20,324 9,497 — 965,673 Loans to financial institutions and acceptances 13,710 — — — — 13,710 Consumer loans and overdrafts 423,395 — 270 — — 423,665 $ 5,283,998 $ 74,086 $ 40,464 $ 10,892 $ — $ 5,409,440

Time Deposits

Time Deposits	3 Months Ended
	Mar. 31, 2022
Time Deposits Disclosure [Abstract]
Time Deposits	Time DepositsTime deposits in denominations of $100,000 or more amounted to approximately $0.8 billion at March 31, 2022 and December 31, 2021. Time deposits in denominations of more than $250,000 amounted to approximately $361 million and $423 million at March 31, 2022 and December 31, 2021, respectively. As of March 31, 2022 and December 31, 2021, brokered time deposits amounted to $297 million and $290 million, respectively.

Advances from the Federal Home

Advances from the Federal Home Loan Bank	3 Months Ended
	Mar. 31, 2022
Advances from Federal Home Loan Banks [Abstract]
Advances from the Federal Home Loan Bank	Advances from the Federal Home Loan Bank At March 31, 2022 and December 31, 2021, the Company had outstanding advances from the FHLB as follows: Outstanding Balance Year of Maturity Interest Interest At March 31, 2022 At December 31, 2021 (in thousands) 2023 0.62% to 1.06% Fixed 104,441 104,317 2024 1.68% Fixed 100,000 — 2025 and after (1) 0.62% to 1.82% Fixed 775,606 705,260 $ 980,047 $ 809,577 _______________ (1) As of March 31, 2022 includes callable advances from the FHLB of $350 million with fixed interest rates raging from 0.85% to 0.97% (December 31, 2021 - $530 million with fixed interest rates raging from 0.62% to 0.97%) In the first quarter of 2022, the Company incurred a loss of $0.7 million on the early repayment of $180 million of advances from the FHLB. In April 2022, the Company repaid FHLB advances totaling $150.0 million which had no impact to consolidated results of operations.

Senior Notes

Senior Notes	3 Months Ended
	Mar. 31, 2022
Debt Disclosure [Abstract]
Senior Notes	Senior NotesOn 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 March 31, 2022, these Senior Notes amounted to $59.0 million, net of direct unamortized issuance costs of $1.0 million. 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, rank equally with all of our existing and future unsecured and unsubordinated indebtedness, and are fully and unconditionally guaranteed by our wholly-owned intermediate holding company subsidiary Amerant Florida Bancorp Inc. (“Amerant Florida”).Subordinated Notes On March 9, 2022, the Company entered into a Subordinated Note Purchase Agreement (the “Purchase Agreement”) with Amerant Florida (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. The Subordinated Notes will 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 Notes are fully and unconditionally guaranteed by the Guarantor (the “Guarantee”). 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 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 Notes, the Company entered into a registration rights agreement, pursuant to which the Company has agreed to take certain actions to provide for the exchange of the Notes for subordinated notes that are registered under the Securities Act and will have substantially the same terms.

Subordinated notes

Subordinated notes	3 Months Ended
	Mar. 31, 2022
Debt Disclosure [Abstract]
Subordinated notes	Senior NotesOn 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 March 31, 2022, these Senior Notes amounted to $59.0 million, net of direct unamortized issuance costs of $1.0 million. 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, rank equally with all of our existing and future unsecured and unsubordinated indebtedness, and are fully and unconditionally guaranteed by our wholly-owned intermediate holding company subsidiary Amerant Florida Bancorp Inc. (“Amerant Florida”).Subordinated Notes On March 9, 2022, the Company entered into a Subordinated Note Purchase Agreement (the “Purchase Agreement”) with Amerant Florida (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. The Subordinated Notes will 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 Notes are fully and unconditionally guaranteed by the Guarantor (the “Guarantee”). 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 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 Notes, the Company entered into a registration rights agreement, pursuant to which the Company has agreed to take certain actions to provide for the exchange of the 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	3 Months Ended
	Mar. 31, 2022
Debt Disclosure [Abstract]
Junior Subordinated Debentures Held by Trust Subsidiaries	Junior Subordinated Debentures Held by Trust Subsidiaries The following table provides information on the outstanding Trust Preferred Securities issued by, and the junior subordinated debentures issued to, each of the statutory trust subsidiaries as of March 31, 2022 and December 31, 2021: March 31, 2022 December 31, 2021 (in thousands) Amount of Principal Amount of Principal Year of Annual Rate of Trust Year of Commercebank Capital Trust VI 9,250 9,537 9,250 9,537 2002 3-M LIBOR + 3.35% 2033 Commercebank Capital Trust VII 8,000 8,248 8,000 8,248 2003 3-M LIBOR + 3.25% 2033 Commercebank Capital Trust VIII 5,000 5,155 5,000 5,155 2004 3-M LIBOR + 2.85% 2034 Commercebank Capital Trust IX 25,000 25,774 25,000 25,774 2006 3-M LIBOR + 1.75% 2038 Commercebank Capital Trust X 15,000 15,464 15,000 15,464 2006 3-M LIBOR + 1.78% 2036 $ 62,250 $ 64,178 $ 62,250 $ 64,178

Derivative Instruments

Derivative Instruments	3 Months Ended
	Mar. 31, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	Derivative Instruments At March 31, 2022 and December 31, 2021, the fair values of the Company’s derivative instruments were as follows: March 31, 2022 December 31, 2021 (in thousands) Other Assets Other Liabilities Other Assets Other Liabilities Interest rate swaps designated as cash flow hedges $ — $ 157 $ — $ 615 Interest rate swaps not designated as hedging instruments: Customers 3,338 17,613 18,858 1,923 Third party broker 17,613 3,338 1,923 18,858 20,951 20,951 20,781 20,781 Interest rate caps not designated as hedging instruments: Customers — 3,741 — 764 Third party broker 2,109 — 477 — 2,109 3,741 477 764 Mortgage derivatives not designated as hedging instruments: Interest rate lock commitments 547 4 581 — Forward contracts 718 414 31 38 1,265 418 612 38 $ 24,325 $ 25,267 $ 21,870 $ 22,198 Derivatives Designated as Hedging Instruments The Company enters into interest rate swap contracts 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 March 31, 2022 and December 31, 2021, the Company had five interest rate swap contracts with notional amounts totaling $64.2 million, maturing in the second half of 2022. 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 March 31, 2022 and December 31, 2021 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. In each of the three months ended March 31, 2022 and 2021, the Company recognized unrealized losses of $0.2 million in connection with 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 income. As of March 31, 2022, the estimated net unrealized losses in accumulated other comprehensive income expected to be reclassified into expense in the next twelve months amounted to $0.9 million. In 2019, the Company terminated 16 interest rate swaps 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 March 31, 2022 and 2021, as a reduction of interest expense on FHLB advances as a result of this amortization. Derivatives Not Designated as Hedging Instruments Interest Rate Swaps At March 31, 2022 and December 31, 2021, the Company had 115 and 109 interest rate swap contracts with customers, respectively, with total notional amounts of $682.4 million and $595.4 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 March 31, 2022 and December 31, 2021, 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 March 31, 2022 and December 31, 2021, the Company had two swap participation agreements with total notional amounts of approximately $32.0 million. The notional amount of these agreements is based on the Company’s pro-rata share of the related interest rate swap contracts. As of March 31, 2022 and December 31, 2021, the fair value of swap participation agreements was not significant. Interest Rate Caps At March 31, 2022 and December 31, 2021, the Company had 20 and 19 interest rate cap contracts with customers with total notional amounts of $435.6 million and $432.0 million, respectively. These instruments involve the Company making payments if an interest rate exceeds the agreed strike price. In addition, at March 31, 2022 and December 31, 2021, the Company had 10 and 9 interest rate cap mirror contracts, respectively, with a third party broker with total notional amounts of $187.0 million and $190.7 million, respectively. In April 2022, the Company entered into 4 interest rate cap contracts with various third-party brokers with total notional amount of $140.0 million. These interest rate caps will serve to partially offset changes in the estimated fair value of interest rate cap contracts with customers at March 31, 2022. Mortgage Derivatives Since the second quarter of 2021, the Company has entered into interest rate lock commitments and forward sale contracts to manage the risk exposure in the mortgage banking area. At March 31, 2022 and December 31,2021, the Company had interest rate lock commitments with notional amounts of $88.9 million and $17.9 million, respectively, and forward contracts with notional amounts of $37.3 million and $16.5 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. In the three months ended March 31, 2022, the change in the fair value of these instruments was $0.3 million. These amounts were recorded as part of other noninterest income in the consolidated statements of operations and comprehensive income. Credit Risk-Related Contingent Features As of March 31, 2022 and December 31, 2021, the aggregate fair value of interest rate swaps in a liability position was $21.1 million and $21.4 million, respectively. Some agreements may require pledging of securities when the valuation of a interest rate swap falls below a certain amount. At March 31, 2022 and December 31, 2021, there were $1.1 million and $2.0 million, respectively, in debt securities held for sale pledged as collateral to secure interest rate swaps designated as cash flow hedges, with a fair value of $0.2 million and $0.6 million, respectively. In addition, at December 31, 2021, there were $23.4 million in debt securities available for sale pledged as collateral to secure interest rate swaps with third-party brokers not designated as hedging instruments, with a fair value of $18.9 million. As of March 31, 2022, there were no collateral requirements related to interest rate swaps with third-party brokers not designated as hedging instruments.

Leases

Leases	3 Months Ended
	Mar. 31, 2022
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 44 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 $0.4 million and $0.3 million in variable lease payments during the three months ended March 31, 2022 and 2021, respectively, which include mostly common area maintenance and taxes, included in occupancy and equipment on the consolidated statements of income. Lease costs for the three months ended March 31, 2022 and 2021 were as follows: (in thousands) March 31, 2022 March 31, 2021 Lease cost Operating lease cost $ 4,362 $ 1,909 Short-term lease cost 22 155 Variable lease cost 447 333 Sublease income (771) (108) Total lease cost, net $ 4,060 $ 2,289 Beginning in the three months ended March 31, 2022, rental income associated with the subleasing of portions of the Company’s headquarters building is presented as a reduction to rent expense under lease agreements under occupancy and equipment cost (included as part of other noninterest income in 2021 in connection with the previously-owned headquarters building). In the three months ended March 31, 2022 and 2021 rental income from this source was $0.7 million and $0.6 million, respectively. As of March 31, 2022 and December 31, 2021, the Company had a right-of-use asset of $139.5 million and $141.1 million and an operating lease liability of $141.7 million and $143.0 million, respectively. As of March 31, 2022 and December 31, 2021, the Company had a short-term lease liability of $6.0 million and $6.4 million, respectively, which were included in other liabilities in the consolidated balance sheet. The following table provides supplemental information to leases as of and for the three months ended March 31, 2022 and 2021: March 31, 2022 March 31, 2021 (in thousands, except weighted average data) Cash paid for amounts included in the measurement of operating lease liabilities 3,640 1,765 Operating lease right-of-use asset obtained in exchange for operating lease liability 1,594 1,044 Weighted average remaining lease term for operating leases 19.0 years 21.0 years Weighted average discount rate for operating leases 5.93 % 5.72 % The following table presents a maturity analysis and reconciliation of the undiscounted cash flows to the total operating lease liabilities as of March 31, 2022 for the twelve months ended shown below and thereafter: (in thousands) Twelve Months Ended March 31, 2022 $ 10,719 2023 12,051 2024 12,045 2025 11,980 2026 12,159 Thereafter 188,887 Total minimum payments required 247,841 Less: implied interest (106,179) Total lease obligations $ 141,662

Stock-based Incentive Compensat

Stock-based Incentive Compensation Plan	3 Months Ended
	Mar. 31, 2022
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 13 to the Company’s audited consolidated financial statements on the 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, 2021, including restricted stock awards (“RSAs”), restricted stock units (“RSUs”) and performance share units (“PSUs”). On February 16, 2022, the Company granted an aggregate of 104,762 RSAs, 26,414 RSUs and a target of 26,415 PSUs to various executive officers and other employees under the LTI Plan. In addition, the Company granted 3,000 RSUs to one executive officer as a one-time recognition award, under the 2018 Equity Plan. Restricted Stock Awards The following table shows the activity of restricted stock awards during the three months ended March 31, 2022: Number of restricted shares Weighted-average grant date fair value Non-vested shares, beginning of year 229,779 $ 18.61 Granted 104,762 33.98 Vested (58,210) 16.59 Forfeited (1,000) 33.98 Non-vested shares at March 31, 2022 275,331 $ 24.82 The Company recorded compensation expense related to the restricted stock awards of $0.7 million and $0.5 million during the three months ended March 31, 2022 and 2021, respectively. The total unamortized deferred compensation expense of $5.3 million for all unvested restricted stock outstanding at March 31, 2022 will be recognized over a weighted average period of 1.8 years. Restricted Stock Units (“RSUs”) and Performance Stock Units (“PSUs”) The following table shows the activity of RSUs and PSUs during the three months ended March 31, 2022: Stock-settled RSUs Cash-settled RSUs Total RSUs Stock-settled PSUs Number of RSUs Weighted-average grant date fair value Number of RSUs Weighted-average grant date fair value Number of RSUs Weighted-average grant date fair value Number of PSUs Weighted-average grant date fair value Nonvested, beginning of year 121,739 $ 17.21 6,573 $ 22.82 128,312 $ 17.62 110,784 $ 13.57 Granted 29,414 33.98 — — 29,414 33.98 26,415 33.63 Vested (36,928) 16.65 — — (36,928) 16.65 — — Forfeited — — — — — — — — Non-vested, end of year 114,225 $ 21.71 6,573 $ 22.82 120,798 $ 21.90 137,199 $ 17.43 The Company recorded compensation expense related to RSUs and PSUs of $0.5 million and $0.4 million during the three months ended March 31, 2022 and 2021, respectively. The total unamortized deferred compensation expense of $3.4 million for all unvested stock-settled RSUs and PSUs outstanding at March 31, 2022 will be recognized over a weighted average period of 2.0 years.

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2022
Income Tax Disclosure [Abstract]
Income Taxes	Income TaxesThe 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 three months ended March 31, 2022 and 2021 were 21.10% and 20.15%, 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”)	3 Months Ended
	Mar. 31, 2022
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: March 31, 2022 December 31, 2021 (in thousands) Before Tax Tax Net of Tax Before Tax Tax Net of Tax Net unrealized holding (losses) gains on debt securities available for sale $ (37,267) $ 9,581 $ (27,686) $ 15,775 $ (3,788) $ 11,987 Net unrealized holding gains on interest rate swaps designated as cash flow hedges 4,395 (1,133) 3,262 4,275 (1,045) $ 3,230 Total (AOCL) AOCI $ (32,872) $ 8,448 $ (24,424) $ 20,050 $ (4,833) $ 15,217 The components of other comprehensive loss for the periods presented are summarized as follows: Three Months Ended March 31, 2022 2021 (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 $ (52,993) $ 13,356 $ (39,637) $ (12,528) $ 3,062 $ (9,466) Reclassification adjustment for net gains included in net income (49) 13 (36) (2,947) 721 (2,226) (53,042) 13,369 (39,673) (15,475) 3,783 (11,692) Net unrealized holding gains (losses) on interest rate swaps designated as cash flow hedges: Change in fair value arising during the period 244 (120) 124 47 (11) 36 Reclassification adjustment for net interest income included in net income (124) 32 (92) (131) 32 (99) 120 (88) 32 (84) 21 (63) Total other comprehensive loss $ (52,922) $ 13,281 $ (39,641) $ (15,559) $ 3,804 $ (11,755)

Stockholders_ Equity

Stockholders’ Equity	3 Months Ended
	Mar. 31, 2022
Equity [Abstract]
Stockholders’ Equity	Stockholders’ Equity a) Common Stock Shares of the Company’s Class A common stock issued and outstanding as of March 31, 2022 and December 31, 2021 were 34,350,822 and 35,883,320, respectively. In the first quarter of 2022, the Company’s Board of Directors authorized the cancellation of all shares of Class A common stock stock repurchased in the first quarter of 2022. As of March 31, 2022 and December 31, 2021, there were no shares of Class A common stock held as treasury stock. Stock-Based Compensation Awards The Company grants, from time to time, stock-based compensation awards which are reflected as changes in the Company’s Stockholders’ equity. See Note 13-Stock-based Incentive Compensation Plan for additional information about common stock transactions under the Company’s 2018 Equity Plan. b) Dividends On January 19, 2022, 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 was paid on February 28, 2022 to shareholders of record at the close of business on February 11, 2022. The aggregate amount in connection with this dividend was $3.2 million. On April 13, 2022, 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 May 31, 2022 to shareholders of record at the close of business on May 13, 2022.

Contingencies

Contingencies	3 Months Ended
	Mar. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Contingencies	Contingencies The Company and its subsidiaries are parties to various legal actions arising in the ordinary course of business. In the opinion of management, the outcome of these proceedings will not have a significant effect on the Company’s consolidated financial position or results of operations. Financial instruments whose contract amount represents off-balance sheet credit risk at March 31, 2022 are generally short-term and are as follows: (in thousands) Approximate Commitments to extend credit $ 885,910 Standby letters of credit 15,521 Commercial letters of credit 2,501 $ 903,932

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2022
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements Assets and liabilities measured at fair value on a recurring basis are summarized below: March 31, 2022 (in thousands) Quoted Third-Party Internal Total Assets Securities Debt securities available for sale U.S. government-sponsored enterprise debt securities $ — $ 394,401 $ — $ 394,401 Corporate debt securities — 359,285 — 359,285 U.S. government agency debt securities — 383,537 — 383,537 Collateralized loan obligations 5,000 5,000 Municipal bonds — 2,062 — 2,062 U.S treasury securities — 1,500 — 1,500 — 1,145,785 — 1,145,785 Equity securities with readily determinable fair values not held for trading 13,370 — — 13,370 13,370 1,145,785 — 1,159,155 Mortgage loans held for sale (at fair value) — 17,108 — 17,108 Bank owned life insurance — 224,348 — 224,348 Other assets Mortgage servicing rights (MSRs) — — 912 912 Derivative instruments — 24,325 — 24,325 $ 13,370 $ 1,411,566 $ 912 $ 1,425,848 Liabilities Other liabilities Derivative instruments $ — $ 25,267 $ — $ 25,267 December 31, 2021 (in thousands) Quoted Third-Party Internal Total Assets Securities Debt securities available for sale U.S. government-sponsored enterprise debt securities $ — $ 450,773 $ — $ 450,773 Corporate debt securities — 357,790 — 357,790 U.S. government agency debt securities — 361,906 — 361,906 U.S treasury securities — 2,502 — 2,502 Municipal bonds — 2,348 — 2,348 — 1,175,319 — 1,175,319 Equity securities with readily determinable fair values not held for trading — 252 — 252 1,175,571 — 1,175,571 Mortgage loans held for sale (at fair value) — 14,905 — 14,905 Bank owned life insurance — 223,006 — 223,006 Other assets Mortgage servicing rights (MSRs) — — 636 636 Derivative instruments — 21,870 — 21,870 $ — $ 1,435,352 $ 636 $ 1,435,988 Liabilities Other liabilities Derivative instruments $ — $ 22,198 $ — $ 22,198 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 March 31, 2022 and December 31, 2021: March 31, 2022 (in thousands) Carrying Amount Quoted Significant Significant Total Impairments Description Loans held for investment measured for impairments using the fair value of the collateral $ 11,618 $ — $ — $ 11,618 $ 26,334 Other Real Estate Owned 9,720 — — 9,720 80 Loans held for sale at the lower cost or fair value 68,591 — 68,591 — 459 $ 89,929 $ — $ 68,591 $ 21,338 $ 26,873 December 31, 2021 (in thousands) Carrying Amount Quoted Significant Significant Total Impairments Description Loans held for investment measured for impairments using the fair value of the collateral $ 24,753 $ — $ — $ 24,753 $ 26,334 Other Real Estate Owned 9,720 — — 9,720 80 $ 34,473 $ — $ — $ — $ 34,473 $ 26,414 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% Collateral Dependent Loans Measured For Impairment The Company measures the impairment of collateral dependent loans based on the fair value of the collateral in accordance with the provisions of ASC-310-35 “Impairment of Loans and Receivables.” The Company primarily uses third party appraisals to assist in measuring impairment on collateral dependent impaired 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. Loans held for sale, at lower of cost or fair value 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. Other Real Estate Owned 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. There were no other significant assets or liabilities measured at fair value on a nonrecurring basis at March 31, 2022 and December 31, 2021. Fair Value of Financial Instruments The estimated fair value of financial instruments where fair value differs from carrying value are as follows: March 31, 2022 December 31, 2021 (in thousands) Carrying Estimated Carrying Estimated Financial assets: Loans $ 2,579,054 $ 2,528,216 $ 2,619,461 $ 2,559,280 Financial liabilities: Time deposits 950,836 947,416 1,048,078 1,057,759 Advances from the FHLB 980,047 971,547 809,577 819,268 Senior notes 58,973 61,124 58,894 63,214 Subordinated notes 29,156 29,156 — — Junior subordinated debentures 64,178 63,050 64,178 61,212

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2022
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 March 31, (in thousands, except share data and per share amounts) 2022 2021 Numerator: Net income before attribution of noncontrolling interest $ 14,874 $ 14,459 Noncontrolling interest (1,076) — Net income attributable to Amerant Bancorp Inc. $ 15,950 $ 14,459 Net income available to common stockholders $ 15,950 $ 14,459 Denominator: Basic weighted average shares outstanding 34,819,984 37,618,198 Dilutive effect of share-based compensation awards 294,059 227,669 Diluted weighted average shares outstanding 35,114,043 37,845,867 Basic earnings per common share $ 0.46 $ 0.38 Diluted earnings per common share $ 0.45 $ 0.38 As of March 31, 2022 and 2021, potential dilutive instruments consisted of unvested shares of restricted stock, restricted stock units and performance share units totaling 526,755 (March 31, 2021 - 562,648 unvested shares of restricted stock and restricted stock units). In the three months ended March 31, 2022 and 2021 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 in per share earnings.

Business, Basis of Presentati_2

Business, Basis of Presentation and Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Restructuring Activities	Restructuring Activities The Company continues to work on better aligning its operating structure and resources with its business activities. During the three months ended March 31, 2022, the Company recorded estimated contract termination costs and related costs of approximately $4.0 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. The Company expects to incur additional contract termination costs once existing vendor relationships are terminated in connection with the implementation of this agreement that cannot be reasonably determined at this time.
Basis of Presentation	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, 2021 and 2020 and for each of the three years in the period ended December 31, 2021 and the accompanying footnote disclosures for the Company, which are included in the Form 10-K. For a complete summary of our significant accounting policies, please 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 loan losses; (ii) the fair values of securities and the value assigned to goodwill during periodic goodwill impairment tests; (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.
Reclassification	ReclassificationsIn the three months ended March 31, 2022, advertising expenses are presented separately in the Company’s consolidated statement of operations and comprehensive (loss) income. Prior to 2022, these expenses were presented as component of other noninterest expenses in the Company’s consolidated statement of operations and comprehensive (loss) income.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements The Company adopted no new accounting pronouncements as of and for the three months ended March 31, 2022. There were no newly-issued accounting pronouncements that may be significant to the Company’s consolidated financial statements. Issued and Not Yet Adopted For a complete summary of accounting guidance, including new guidance on accounting for current expected credit losses on financial instruments (“CECL”), which is pending adoption by the Company, see Note 1 to the Company’s audited consolidated financial statements in the Company’s annual report on the Form 10-K. In March 2022, the Financial Accounting Standards Board (‘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 nonprepayable 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 is in the process of reviewing this new guidance to determine whether it would have a material impact on the Company’s consolidated financial statements when adopted.
Subsequent Events	Subsequent EventsThe effects of significant subsequent events, if any, have been recognized or disclosed in these unaudited interim consolidated financial statements.

Securities (Tables)

Securities (Tables)	3 Months Ended
	Mar. 31, 2022
Investments, Debt and Equity Securities [Abstract]
Schedule of available for sale securities from amortized cost to fair value	Amortized cost and approximate fair values of debt securities available for sale are summarized as follows: March 31, 2022 Amortized Gross Unrealized Estimated (in thousands) Gains Losses U.S. government-sponsored enterprise debt securities $ 407,490 $ 944 $ (14,033) $ 394,401 Corporate debt securities 365,730 1,994 (8,439) 359,285 U.S. government agency debt securities 401,270 414 (18,147) 383,537 Collateralized loan obligations 5,000 — — 5,000 Municipal bonds 2,062 3 (3) 2,062 U.S. treasury securities 1,500 — — 1,500 Total debt securities available for sale (1) $ 1,183,052 $ 3,355 $ (40,622) $ 1,145,785 __________________ (1) As of March 31, 2022, includes residential and commercial mortgage-backed securities with amortized cost of $669.1 million and $116.8 million, respectively, and fair value of $643.1 million and $111.6 million, respectively. December 31, 2021 Amortized Gross Unrealized Estimated (in thousands) Gains Losses U.S. government sponsored enterprise debt securities $ 443,892 $ 9,319 $ (2,438) $ 450,773 Corporate debt securities 348,576 10,143 (929) 357,790 U.S. government agency debt securities 362,323 1,953 (2,370) 361,906 U.S. treasury securities 2,501 1 — 2,502 Municipal bonds 2,252 96 — 2,348 Total debt securities available for sale (1) $ 1,159,544 $ 21,512 $ (5,737) $ 1,175,319 __________________ (1) As of December 31, 2021, includes residential and commercial mortgage-backed securities with amortized cost of $654.7 million and $123.5 million, respectively, and fair value of $661.3 million and $123.8 million, respectively.
Schedule of realized gain (loss)	In the three month periods ended March 31, 2022 and 2021, proceeds from sales, redemptions and calls, gross realized gains, gross realized losses of debt securities available for sale were as follows: Three Months Ended March 31, (in thousands) 2022 2021 Proceeds from sales, redemptions and calls of debt securities available for sale $ 14,013 $ 43,854 Gross realized gains $ 49 $ 2,947 Gross realized losses — — Realized gains, net on sales of debt investment securities $ 49 $ 2,947
Schedule of available for sale securities with unrealized losses	The Company’s investment in debt securities available for sale with unrealized losses that are deemed temporary, aggregated by the length of time that individual securities have been in a continuous unrealized loss position, are summarized below: March 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 162 $ 320,537 $ (10,917) 61 $ 30,500 $ (3,116) $ 351,037 $ (14,033) Corporate debt securities 39 196,600 (7,605) 3 10,124 (834) 206,724 (8,439) U.S. government agency debt securities 67 319,930 (16,999) 74 46,956 (1,148) 366,886 (18,147) Municipal bonds 1 426 (3) — — — 426 (3) 269 $ 837,493 $ (35,524) 138 $ 87,580 $ (5,098) $ 925,073 $ (40,622) December 31, 2021 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 29 $ 54,562 $ (1,434) 59 $ 25,526 $ (1,004) $ 80,088 $ (2,438) Corporate debt securities 8 52,672 (259) 3 10,286 (670) 62,958 (929) U.S. government agency debt securities 35 200,051 (1,177) 69 52,109 (1,193) 252,160 (2,370) 72 $ 307,285 $ (2,870) 131 $ 87,921 $ (2,867) $ 395,206 $ (5,737)
Schedule of debt securities, held-to-maturity	Amortized cost and approximate fair values of debt securities held to maturity are summarized as follows: March 31, 2022 Amortized Gross Unrealized Estimated (in thousands) Gains Losses U.S. government agency debt securities $ 64,143 $ — $ (3,816) $ 60,327 U.S. government sponsored enterprise debt securities 47,865 — (2,656) 45,209 Total debt securities held to maturity (1) $ 112,008 $ — $ (6,472) $ 105,536 __________________ (1) As of March 31, 2022, includes residential and commercial mortgage-backed securities with amortized cost of $83.4 million and $28.7 million, respectively, and fair value of $77.9 million and $27.6 million, respectively. December 31, 2021 Amortized Gross Unrealized Estimated (in thousands) Gains Losses U.S. government agency debt securities $ 66,307 $ 62 $ (363) $ 66,006 U.S. government sponsored enterprise debt securities 51,868 1,581 (378) 53,071 Total debt securities held to maturity (1) $ 118,175 $ 1,643 $ (741) $ 119,077 __________________ (1) As of December 31, 2021, includes residential and commercial mortgage-backed securities with amortized cost of $89.4 million and $28.8 million, respectively, and fair value of $88.7 million and $30.4 million, respectively. The Company’s investment in debt securities held to maturity with unrealized losses that are deemed temporary, aggregated by length of time that individual securities have been in a continuous unrealized loss position, are summarized below: March 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 $ 60,327 $ (3,816) — $ — $ — $ 60,327 $ (3,816) U.S. government sponsored enterprise debt securities 9 35,351 (1,401) 1 9,858 (1,255) 45,209 (2,656) 21 $ 95,678 $ (5,217) 1 $ 9,858 $ (1,255) $ 105,536 $ (6,472) December 31, 2021 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 11 $ 61,037 $ (363) — $ — $ — $ 61,037 $ (363) U.S. government sponsored enterprise debt securities 2 22,669 (378) — — — 22,669 (378) 13 $ 83,706 $ (741) — $ — $ — $ 83,706 $ (741)
Schedule of contractual maturities of securities	Contractual maturities of debt securities at March 31, 2022 are as follows: Available for Sale Held to Maturity (in thousands) Amortized Estimated Amortized Estimated Within 1 year $ 25,333 $ 25,432 $ — $ — After 1 year through 5 years 100,274 99,454 8,101 7,732 After 5 years through 10 years 312,215 306,855 11,130 10,785 After 10 years 745,230 714,044 92,777 87,019 $ 1,183,052 $ 1,145,785 $ 112,008 $ 105,536

Loans (Tables)

Loans (Tables)	3 Months Ended
	Mar. 31, 2022
Receivables [Abstract]
Schedule of loan portfolio by classes	Loans held for investment consist of the following loan classes: (in thousands) March 31, December 31, Real estate loans Commercial real estate Non-owner occupied $ 1,570,006 $ 1,540,590 Multi-family residential 540,726 514,679 Land development and construction loans 296,609 327,246 2,407,341 2,382,515 Single-family residential 707,594 661,339 Owner occupied 927,921 962,538 4,042,856 4,006,392 Commercial loans 1,093,205 965,673 Loans to financial institutions and acceptances 13,730 13,710 Consumer loans and overdrafts 485,687 423,665 Total loans held for investment $ 5,635,478 $ 5,409,440 (in thousands) March 31, December 31, Loans held for sale at the lower of cost or fair value Real estate loans Commercial real estate Non-owner occupied $ 46,947 $ 110,271 Multi-family residential 20,796 31,606 67,743 141,877 Owner occupied 1,306 1,318 Total real estate loans 69,049 143,195 Less: valuation allowance 458 — Total loans held for sale at the lower of fair value or cost 68,591 143,195 Loans held for sale at fair value Land development and construction loans 836 — Single-family residential 16,272 14,905 Total loans held for sale at fair value (1) 17,108 14,905 Total loans held for sale (2) $ 85,699 $ 158,100 _______________ (1) Loans held for sale in connection with Amerant Mortgage ongoing business.
Schedule of loan portfolio delinquencies	The age analysis of the loan portfolio held for investment by class, including nonaccrual loans, as of March 31, 2022 and December 31, 2021 are summarized in the following tables: March 31, 2022 Total Loans, Past Due Total Loans in Total Loans (in thousands) Current 30-59 60-89 Greater than Total Past Real estate loans Commercial real estate Non-owner occupied $ 1,570,006 $ 1,570,006 $ — $ — $ — $ — $ 12,825 $ — Multi-family residential 540,726 540,726 — — — — — — Land development and construction loans 296,609 296,609 — — — — — — 2,407,341 2,407,341 — — — — 12,825 — Single-family residential 707,594 703,003 2,743 436 1,412 4,591 3,717 — Owner occupied 927,921 926,118 145 263 1,395 1,803 10,770 — 4,042,856 4,036,462 2,888 699 2,807 6,394 27,312 — Commercial loans 1,093,205 1,080,403 995 338 11,469 12,802 19,178 — Loans to financial institutions and acceptances 13,730 13,730 — — — — — — Consumer loans and overdrafts 485,687 485,656 16 — 15 31 468 10 $ 5,635,478 $ 5,616,251 $ 3,899 $ 1,037 $ 14,291 $ 19,227 $ 46,958 $ 10 December 31, 2021 Total Loans, Past Due Total Loans in Total Loans (in thousands) Current 30-59 60-89 Greater than Total Past Real estate loans Commercial real estate Non-owner occupied $ 1,540,590 $ 1,540,590 $ — $ — $ — $ — $ 7,285 $ — Multi-family residential 514,679 514,679 — — — — — — Land development and construction loans 327,246 327,246 — — — — — — 2,382,515 2,382,515 — — — — 7,285 — Single-family residential 661,339 657,882 990 412 2,055 3,457 5,126 — Owner occupied 962,538 961,132 — — 1,406 1,406 8,665 — 4,006,392 4,001,529 990 412 3,461 4,863 21,076 — Commercial loans 965,673 939,685 277 1,042 24,669 25,988 28,440 — Loans to financial institutions and acceptances 13,710 13,710 — — — — — — Consumer loans and overdrafts 423,665 423,624 22 7 12 41 257 8 $ 5,409,440 $ 5,378,548 $ 1,289 $ 1,461 $ 28,142 $ 30,892 $ 49,773 $ 8 In January 2022, the Company collected a partial payment of approximately $9.8 million on one commercial nonaccrual loan with a carrying value of $12.4 million. Also, in January 2022, the Company charged-off the remaining balance of this loan of $2.5 million against its specific reserve at December 31, 2021.

Allowance for Loan Losses (Tabl

Allowance for Loan Losses (Tables)	3 Months Ended
	Mar. 31, 2022
Receivables [Abstract]
Schedule of allowance for loan losses	The analyses by loan segment of the changes in the allowance for loan losses (“ALL”) for the three months ended March 31, 2022 and 2021, and its allocation by impairment methodology and the related investment in loans, net as of March 31, 2022 and 2021 are summarized in the following tables: Three Months Ended March 31, 2022 (in thousands) Real Estate Commercial Financial Consumer Total Balance at beginning of the period $ 17,952 $ 38,979 $ 42 $ 12,926 $ 69,899 Reversal of loan losses (5,594) (2,585) (1) (1,820) (10,000) Loans charged-off Domestic — (3,275) — (1,043) (4,318) International — — — (4) (4) Recoveries 4 300 — 170 474 Balance at end of the period $ 12,362 $ 33,419 $ 41 $ 10,229 $ 56,051 Allowance for loan losses by impairment methodology: Individually evaluated $ 477 $ 6,021 $ — $ 718 $ 7,216 Collectively evaluated 11,885 27,398 41 9,511 48,835 $ 12,362 $ 33,419 $ 41 $ 10,229 $ 56,051 Investment in loans, net of unearned income: Individually evaluated $ 12,825 $ 32,500 $ — $ 4,427 $ 49,752 Collectively evaluated 2,362,355 2,184,495 13,730 1,025,146 5,585,726 $ 2,375,180 $ 2,216,995 $ 13,730 $ 1,029,573 $ 5,635,478 Three Months Ended March 31, 2021 (in thousands) Real Estate Commercial Financial Consumer Total Balance at beginning of the period $ 50,227 $ 48,130 $ 1 $ 12,544 $ 110,902 Provision for loan losses (1,936) 702 — 1,234 — Loans charged-off Domestic — (235) — (431) (666) International — — — — — Recoveries — 605 — 99 704 Balance at end of the period $ 48,291 $ 49,202 $ 1 $ 13,446 $ 110,940 Allowance for loan losses by impairment methodology: Individually evaluated $ 2,918 $ 26,665 $ — $ 1,077 $ 30,660 Collectively evaluated 45,373 22,537 1 12,369 80,280 $ 48,291 $ 49,202 $ 1 $ 13,446 $ 110,940 Investment in loans, net of unearned income: Individually evaluated $ 19,892 $ 60,891 $ — $ 8,261 $ 89,044 Collectively evaluated 2,742,923 2,154,463 18,073 749,291 5,664,750 $ 2,762,815 $ 2,215,354 $ 18,073 $ 757,552 $ 5,753,794 Three Months Ended March 31, (in thousands) Real Estate Commercial Financial Consumer Total 2022 $ — $ — $ — $ 1,313 $ 1,313 2021 $ — $ — $ — $ 1,173 $ 1,173
Schedule of impaired loans	The following is a summary of impaired loans as of March 31, 2022 and December 31, 2021: March 31, 2022 Recorded Investment (in thousands) With a Valuation Allowance Without a Valuation Allowance Total Year Average (1) Total Unpaid Principal Balance Valuation Allowance Real estate loans Commercial real estate Non-owner occupied $ 1,360 $ 11,465 $ 12,825 $ 24,260 $ 12,887 $ 477 Multi-family residential — — — 2,482 — — Land development and construction — — — — — — 1,360 11,465 12,825 26,742 12,887 477 Single-family residential 2,267 1,694 3,961 5,842 3,917 413 Owner occupied 406 10,363 10,769 10,438 10,621 137 4,033 23,522 27,555 43,022 27,425 1,027 Commercial loans 10,410 11,321 21,731 34,737 25,023 5,884 Consumer loans and overdrafts 466 — 466 318 467 305 $ 14,909 $ 34,843 $ 49,752 $ 78,077 $ 52,915 $ 7,216 _______________ (1) Average using trailing four quarter balances. December 31, 2021 Recorded Investment (in thousands) With a Valuation Allowance Without a Valuation Allowance Total Year Average (1) Total Unpaid Principal Balance Valuation Allowance Real estate loans Commercial real estate Non-owner occupied $ 1,452 $ 5,833 $ 7,285 $ 23,185 $ 7,349 $ 546 Multi-family residential — — — 5,324 — — Land development and construction loans — — — — — — 1,452 5,833 7,285 28,509 7,349 546 Single-family residential 3,689 1,689 5,378 7,619 5,316 618 Owner occupied 516 8,149 8,665 10,877 8,491 170 5,657 15,671 21,328 47,005 21,156 1,334 Commercial loans 21,353 9,767 31,120 40,626 59,334 10,292 Consumer loans and overdrafts 256 — 256 268 256 165 $ 27,266 $ 25,438 $ 52,704 $ 87,899 $ 80,746 $ 11,791 _______________ (1) Average using trailing four quarter balances.
Schedule of loans modified in troubled debt restructurings	The following table shows information about loans modified in TDRs as of March 31, 2022 and December 31, 2021: As of March 31, 2022 As of December 31, 2021 (in thousands) Number of Contracts Recorded Investment Number of Contracts Recorded Investment Real estate loans Commercial real estate Non-owner occupied 1 $ 1,360 1 $ 1,452 Single-family residential 1 268 1 258 Owner occupied 4 6,071 4 6,213 6 7,699 6 7,923 Commercial loans 11 4,505 11 5,005 Total (1)(2) 17 $ 12,204 17 $ 12,928 ______________ (1) As of March 31, 2022 and December 31, 2021, includes a multiple loan relationship with a South Florida customer consisting of CRE, owner occupied and commercial loans totaling $8.6 million and $9.1 million, respectively. This TDR consisted of extending repayment terms and adjusting future periodic payments which resulted in no additional reserves. As of March 31, 2022 and December 31, 2021, this relationship included two residential loans totaling $1.4 million and one commercial loan of $0.8 million, which were not modified. During 2020, the company charged off $1.9 million against the ALL associated with this commercial loan relationship. The Company believes the specific reserves associated with these loans, which total $0.6 million and $0.8 million at March 31, 2022 and December 31, 2021, respectively, are adequate to cover probable losses given current facts and circumstances. (2) There were no new TDRs in the three months ended March 31, 2022. In addition, during the three months ended March 31, 2022, there were no TDR loans that subsequently defaulted within the 12 months of restructuring.
Schedule of credit quality indicators	Loans by credit quality indicators as of March 31, 2022 and December 31, 2021 are summarized in the following tables: March 31, 2022 Credit Risk Rating Nonclassified Classified (in thousands) Pass Special Mention Substandard Doubtful Loss Total Real estate loans Commercial real estate Non-owner occupied $ 1,553,960 $ 3,221 $ 11,522 $ 1,303 $ — $ 1,570,006 Multi-family residential 540,726 — — — — 540,726 Land development and construction loans 296,609 — — — — 296,609 2,391,295 3,221 11,522 1,303 — 2,407,341 Single-family residential 703,782 — 3,812 — — 707,594 Owner occupied 909,676 7,383 10,862 — — 927,921 4,004,753 10,604 26,196 1,303 — 4,042,856 Commercial loans 1,047,152 25,545 18,519 1,989 — 1,093,205 Loans to financial institutions and acceptances 13,730 — — — — 13,730 Consumer loans and overdrafts 485,219 — 468 — — 485,687 $ 5,550,854 $ 36,149 $ 45,183 $ 3,292 $ — $ 5,635,478 December 31, 2021 Credit Risk Rating Nonclassified Classified (in thousands) Pass Special Mention Substandard Doubtful Loss Total Real estate loans Commercial real estate Non-owner occupied $ 1,499,100 $ 34,205 $ 5,890 $ 1,395 $ — $ 1,540,590 Multi-family residential 514,679 — — — — 514,679 Land development and construction loans 327,246 — — — — 327,246 2,341,025 34,205 5,890 1,395 — 2,382,515 Single-family residential 656,118 — 5,221 — — 661,339 Owner occupied 946,350 7,429 8,759 — — 962,538 3,943,493 41,634 19,870 1,395 — 4,006,392 Commercial loans 903,400 32,452 20,324 9,497 — 965,673 Loans to financial institutions and acceptances 13,710 — — — — 13,710 Consumer loans and overdrafts 423,395 — 270 — — 423,665 $ 5,283,998 $ 74,086 $ 40,464 $ 10,892 $ — $ 5,409,440

Advances from the Federal Hom_2

Advances from the Federal Home Loan Bank (Tables)	3 Months Ended
	Mar. 31, 2022
Advances from Federal Home Loan Banks [Abstract]
Schedule of outstanding advances from the FHLB	At March 31, 2022 and December 31, 2021, the Company had outstanding advances from the FHLB as follows: Outstanding Balance Year of Maturity Interest Interest At March 31, 2022 At December 31, 2021 (in thousands) 2023 0.62% to 1.06% Fixed 104,441 104,317 2024 1.68% Fixed 100,000 — 2025 and after (1) 0.62% to 1.82% Fixed 775,606 705,260 $ 980,047 $ 809,577 _______________

Junior Subordinated Debenture_2

Junior Subordinated Debentures Held by Trust Subsidiaries (Tables)	3 Months Ended
	Mar. 31, 2022
Debt Disclosure [Abstract]
Summary of the Outstanding Trust Preferred Securities	The following table provides information on the outstanding Trust Preferred Securities issued by, and the junior subordinated debentures issued to, each of the statutory trust subsidiaries as of March 31, 2022 and December 31, 2021: March 31, 2022 December 31, 2021 (in thousands) Amount of Principal Amount of Principal Year of Annual Rate of Trust Year of Commercebank Capital Trust VI 9,250 9,537 9,250 9,537 2002 3-M LIBOR + 3.35% 2033 Commercebank Capital Trust VII 8,000 8,248 8,000 8,248 2003 3-M LIBOR + 3.25% 2033 Commercebank Capital Trust VIII 5,000 5,155 5,000 5,155 2004 3-M LIBOR + 2.85% 2034 Commercebank Capital Trust IX 25,000 25,774 25,000 25,774 2006 3-M LIBOR + 1.75% 2038 Commercebank Capital Trust X 15,000 15,464 15,000 15,464 2006 3-M LIBOR + 1.78% 2036 $ 62,250 $ 64,178 $ 62,250 $ 64,178

Derivative Instruments (Tables)

Derivative Instruments (Tables)	3 Months Ended
	Mar. 31, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments	At March 31, 2022 and December 31, 2021, the fair values of the Company’s derivative instruments were as follows: March 31, 2022 December 31, 2021 (in thousands) Other Assets Other Liabilities Other Assets Other Liabilities Interest rate swaps designated as cash flow hedges $ — $ 157 $ — $ 615 Interest rate swaps not designated as hedging instruments: Customers 3,338 17,613 18,858 1,923 Third party broker 17,613 3,338 1,923 18,858 20,951 20,951 20,781 20,781 Interest rate caps not designated as hedging instruments: Customers — 3,741 — 764 Third party broker 2,109 — 477 — 2,109 3,741 477 764 Mortgage derivatives not designated as hedging instruments: Interest rate lock commitments 547 4 581 — Forward contracts 718 414 31 38 1,265 418 612 38 $ 24,325 $ 25,267 $ 21,870 $ 22,198

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2022
Leases [Abstract]
Schedule of Lease Cost	Lease costs for the three months ended March 31, 2022 and 2021 were as follows: (in thousands) March 31, 2022 March 31, 2021 Lease cost Operating lease cost $ 4,362 $ 1,909 Short-term lease cost 22 155 Variable lease cost 447 333 Sublease income (771) (108) Total lease cost, net $ 4,060 $ 2,289 The following table provides supplemental information to leases as of and for the three months ended March 31, 2022 and 2021: March 31, 2022 March 31, 2021 (in thousands, except weighted average data) Cash paid for amounts included in the measurement of operating lease liabilities 3,640 1,765 Operating lease right-of-use asset obtained in exchange for operating lease liability 1,594 1,044 Weighted average remaining lease term for operating leases 19.0 years 21.0 years Weighted average discount rate for operating leases 5.93 % 5.72 %
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 March 31, 2022 for the twelve months ended shown below and thereafter: (in thousands) Twelve Months Ended March 31, 2022 $ 10,719 2023 12,051 2024 12,045 2025 11,980 2026 12,159 Thereafter 188,887 Total minimum payments required 247,841 Less: implied interest (106,179) Total lease obligations $ 141,662

Stock-based Incentive Compens_2

Stock-based Incentive Compensation Plan (Tables)	3 Months Ended
	Mar. 31, 2022
Share-based Payment Arrangement [Abstract]
Schedule of Restricted Stock Activity	The following table shows the activity of restricted stock awards during the three months ended March 31, 2022: Number of restricted shares Weighted-average grant date fair value Non-vested shares, beginning of year 229,779 $ 18.61 Granted 104,762 33.98 Vested (58,210) 16.59 Forfeited (1,000) 33.98 Non-vested shares at March 31, 2022 275,331 $ 24.82
Schedule of Restricted Stock Units and Performance Stock Units	The following table shows the activity of RSUs and PSUs during the three months ended March 31, 2022: Stock-settled RSUs Cash-settled RSUs Total RSUs Stock-settled PSUs Number of RSUs Weighted-average grant date fair value Number of RSUs Weighted-average grant date fair value Number of RSUs Weighted-average grant date fair value Number of PSUs Weighted-average grant date fair value Nonvested, beginning of year 121,739 $ 17.21 6,573 $ 22.82 128,312 $ 17.62 110,784 $ 13.57 Granted 29,414 33.98 — — 29,414 33.98 26,415 33.63 Vested (36,928) 16.65 — — (36,928) 16.65 — — Forfeited — — — — — — — — Non-vested, end of year 114,225 $ 21.71 6,573 $ 22.82 120,798 $ 21.90 137,199 $ 17.43

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive (loss) Income (“AOCL/AOCI”) (Tables)	3 Months Ended
	Mar. 31, 2022
Equity [Abstract]
Components of AOCI	The components of AOCL/AOCI are summarized as follows using applicable blended average federal and state tax rates for each period: March 31, 2022 December 31, 2021 (in thousands) Before Tax Tax Net of Tax Before Tax Tax Net of Tax Net unrealized holding (losses) gains on debt securities available for sale $ (37,267) $ 9,581 $ (27,686) $ 15,775 $ (3,788) $ 11,987 Net unrealized holding gains on interest rate swaps designated as cash flow hedges 4,395 (1,133) 3,262 4,275 (1,045) $ 3,230 Total (AOCL) AOCI $ (32,872) $ 8,448 $ (24,424) $ 20,050 $ (4,833) $ 15,217
Components of Other Comprehensive Income	The components of other comprehensive loss for the periods presented are summarized as follows: Three Months Ended March 31, 2022 2021 (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 $ (52,993) $ 13,356 $ (39,637) $ (12,528) $ 3,062 $ (9,466) Reclassification adjustment for net gains included in net income (49) 13 (36) (2,947) 721 (2,226) (53,042) 13,369 (39,673) (15,475) 3,783 (11,692) Net unrealized holding gains (losses) on interest rate swaps designated as cash flow hedges: Change in fair value arising during the period 244 (120) 124 47 (11) 36 Reclassification adjustment for net interest income included in net income (124) 32 (92) (131) 32 (99) 120 (88) 32 (84) 21 (63) Total other comprehensive loss $ (52,922) $ 13,281 $ (39,641) $ (15,559) $ 3,804 $ (11,755)

Contingencies (Tables)

Contingencies (Tables)	3 Months Ended
	Mar. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Summary of Financial Instruments Whose Contract Amount Represents Off-Balance Sheet Credit Risk	Financial instruments whose contract amount represents off-balance sheet credit risk at March 31, 2022 are generally short-term and are as follows: (in thousands) Approximate Commitments to extend credit $ 885,910 Standby letters of credit 15,521 Commercial letters of credit 2,501 $ 903,932

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2022
Fair Value Disclosures [Abstract]
Summary 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: March 31, 2022 (in thousands) Quoted Third-Party Internal Total Assets Securities Debt securities available for sale U.S. government-sponsored enterprise debt securities $ — $ 394,401 $ — $ 394,401 Corporate debt securities — 359,285 — 359,285 U.S. government agency debt securities — 383,537 — 383,537 Collateralized loan obligations 5,000 5,000 Municipal bonds — 2,062 — 2,062 U.S treasury securities — 1,500 — 1,500 — 1,145,785 — 1,145,785 Equity securities with readily determinable fair values not held for trading 13,370 — — 13,370 13,370 1,145,785 — 1,159,155 Mortgage loans held for sale (at fair value) — 17,108 — 17,108 Bank owned life insurance — 224,348 — 224,348 Other assets Mortgage servicing rights (MSRs) — — 912 912 Derivative instruments — 24,325 — 24,325 $ 13,370 $ 1,411,566 $ 912 $ 1,425,848 Liabilities Other liabilities Derivative instruments $ — $ 25,267 $ — $ 25,267 December 31, 2021 (in thousands) Quoted Third-Party Internal Total Assets Securities Debt securities available for sale U.S. government-sponsored enterprise debt securities $ — $ 450,773 $ — $ 450,773 Corporate debt securities — 357,790 — 357,790 U.S. government agency debt securities — 361,906 — 361,906 U.S treasury securities — 2,502 — 2,502 Municipal bonds — 2,348 — 2,348 — 1,175,319 — 1,175,319 Equity securities with readily determinable fair values not held for trading — 252 — 252 1,175,571 — 1,175,571 Mortgage loans held for sale (at fair value) — 14,905 — 14,905 Bank owned life insurance — 223,006 — 223,006 Other assets Mortgage servicing rights (MSRs) — — 636 636 Derivative instruments — 21,870 — 21,870 $ — $ 1,435,352 $ 636 $ 1,435,988 Liabilities Other liabilities Derivative instruments $ — $ 22,198 $ — $ 22,198
Summary 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 March 31, 2022 and December 31, 2021: March 31, 2022 (in thousands) Carrying Amount Quoted Significant Significant Total Impairments Description Loans held for investment measured for impairments using the fair value of the collateral $ 11,618 $ — $ — $ 11,618 $ 26,334 Other Real Estate Owned 9,720 — — 9,720 80 Loans held for sale at the lower cost or fair value 68,591 — 68,591 — 459 $ 89,929 $ — $ 68,591 $ 21,338 $ 26,873 December 31, 2021 (in thousands) Carrying Amount Quoted Significant Significant Total Impairments Description Loans held for investment measured for impairments using the fair value of the collateral $ 24,753 $ — $ — $ 24,753 $ 26,334 Other Real Estate Owned 9,720 — — 9,720 80 $ 34,473 $ — $ — $ — $ 34,473 $ 26,414
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%
Summary 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: March 31, 2022 December 31, 2021 (in thousands) Carrying Estimated Carrying Estimated Financial assets: Loans $ 2,579,054 $ 2,528,216 $ 2,619,461 $ 2,559,280 Financial liabilities: Time deposits 950,836 947,416 1,048,078 1,057,759 Advances from the FHLB 980,047 971,547 809,577 819,268 Senior notes 58,973 61,124 58,894 63,214 Subordinated notes 29,156 29,156 — — Junior subordinated debentures 64,178 63,050 64,178 61,212

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2022
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 March 31, (in thousands, except share data and per share amounts) 2022 2021 Numerator: Net income before attribution of noncontrolling interest $ 14,874 $ 14,459 Noncontrolling interest (1,076) — Net income attributable to Amerant Bancorp Inc. $ 15,950 $ 14,459 Net income available to common stockholders $ 15,950 $ 14,459 Denominator: Basic weighted average shares outstanding 34,819,984 37,618,198 Dilutive effect of share-based compensation awards 294,059 227,669 Diluted weighted average shares outstanding 35,114,043 37,845,867 Basic earnings per common share $ 0.46 $ 0.38 Diluted earnings per common share $ 0.45 $ 0.38

Business, Basis of Presentati_3

Business, Basis of Presentation and Summary of Significant Accounting Policies - Additional Information (Details)	3 Months Ended
	Mar. 31, 2022USD ($)subsidiary$ / shares	Mar. 31, 2021USD ($)	Dec. 31, 2021USD ($)$ / shares	Sep. 30, 2021USD ($)
Class of Stock [Line Items]
Number of subsidiaries | subsidiary	3
Common stock, par value (in dollars per share) | $ / shares	$ 0.10		$ 0.10
Goodwill	$ 19,506,000		$ 19,506,000
Recorded investment, under deferral and/or forbearance, CARES Act	0		37,100,000
Operating lease right-of-use assets	139,477,000		141,139,000
Total lease obligations	141,662,000		$ 143,000,000
Contract termination costs	4,012,000	$ 0
Loans held for sale valuation expense	459,000	0
Contract Termination
Class of Stock [Line Items]
Severance expense	4,000,000
Reorganization of Business-Generating Units
Class of Stock [Line Items]
Severance expense	800,000	0
Other Restructuring
Class of Stock [Line Items]
Severance expense	$ 1,200,000	$ 200,000
Class A Common Stock
Class of Stock [Line Items]
Common stock, par value (in dollars per share) | $ / shares	$ 0.10
Stock repurchase program, authorized amount				$ 50,000,000
Amerant Bank, N.A
Class of Stock [Line Items]
Ownership percentage of subsidiary	100.00%
Amerant Mortgage
Class of Stock [Line Items]
Ownership percentage of subsidiary	57.40%		51.00%
Payments to noncontrolling interests	$ 1,500,000

Business, Basis of Presentati_4

Business, Basis of Presentation and Summary of Significant Accounting Policies - Stock Repurchase Programs and Proposed Clean-Up Merger (Details) - Class A Common Stock - USD ($)	Apr. 13, 2022	Jan. 19, 2022	Apr. 26, 2022	Jan. 31, 2022	Mar. 31, 2022	Sep. 30, 2021
Class of Stock [Line Items]
Treasury stock, acquired (in shares)				652,118
Treasury stock acquired (in dollars per share)				$ 33.96
Treasury stock acquired				$ 22,100,000
Stock repurchase program, authorized amount						$ 50,000,000
Dividends, declared (in dollars per share)		$ 0.09
New Class A Common Stock Repurchase Program
Class of Stock [Line Items]
Treasury stock, acquired (in shares)					991,362
Treasury stock acquired (in dollars per share)					$ 32.96
Treasury stock acquired					$ 32,700,000
Stock repurchase program, authorized amount				$ 50,000,000
Subsequent Event
Class of Stock [Line Items]
Dividends, declared (in dollars per share)	$ 0.09
Subsequent Event | New Class A Common Stock Repurchase Program
Class of Stock [Line Items]
Treasury stock, acquired (in shares)			168,190
Treasury stock acquired (in dollars per share)			$ 30.11
Treasury stock acquired			$ 5,100,000

Interest Earning Deposits wit_2

Interest Earning Deposits with Banks and Restricted Cash (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Cash and Cash Equivalents [Abstract]
Interest earning deposits with banks	$ 234,709	$ 240,540
Average interest rate on deposits with banks	0.21%	0.12%
Interest earning deposits with banks, maturity	1 year
Restricted cash	$ 6,243	$ 0

Securities - Amortized Cost to

Securities - Amortized Cost to Fair Value of Available for Sale Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 1,183,052	$ 1,159,544
Gross Unrealized Gains	3,355	21,512
Gross Unrealized Losses	(40,622)	(5,737)
Estimated Fair Value	1,145,785	1,175,319
U.S. government-sponsored enterprise debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	407,490	443,892
Gross Unrealized Gains	944	9,319
Gross Unrealized Losses	(14,033)	(2,438)
Estimated Fair Value	394,401	450,773
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	365,730	348,576
Gross Unrealized Gains	1,994	10,143
Gross Unrealized Losses	(8,439)	(929)
Estimated Fair Value	359,285	357,790
U.S. government agency debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	401,270	362,323
Gross Unrealized Gains	414	1,953
Gross Unrealized Losses	(18,147)	(2,370)
Estimated Fair Value	383,537	361,906
Collateralized loan obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	5,000
Gross Unrealized Gains	0
Gross Unrealized Losses	0
Estimated Fair Value	5,000
Municipal bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2,062	2,252
Gross Unrealized Gains	3	96
Gross Unrealized Losses	(3)	0
Estimated Fair Value	2,062	2,348
U.S. treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	1,500	2,501
Gross Unrealized Gains	0	1
Gross Unrealized Losses	0	0
Estimated Fair Value	1,500	2,502
Residential Mortgage Backed Securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	669,100	654,700
Estimated Fair Value	643,100	661,300
Commercial Mortgage Backed Securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	116,800	123,500
Estimated Fair Value	$ 111,600	$ 123,800

Securities - Narrative (Details

Securities - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Securities	$ 1,324,969,000		$ 1,341,241,000
Debt securities available for sale	1,145,785,000		1,175,319,000
Equity securities with readily determinable fair value not held for trading	13,370,000		252,000
Unrealized loss	925,073,000		395,206,000
Securities pledged as collateral	485,300,000		142,800,000
Foreign Corporate Debt Securities
Debt Securities, Available-for-sale [Line Items]
Securities	10,800,000		12,500,000
Debt securities available for sale	0		0
Investment-Grade
Debt Securities, Available-for-sale [Line Items]
Securities	170,000,000		43,400,000
Unrealized loss	6,900,000		300,000
Non-Investment-Grade
Debt Securities, Available-for-sale [Line Items]
Securities	36,700,000		19,600,000
Unrealized loss	1,600,000		600,000
Mutual funds
Debt Securities, Available-for-sale [Line Items]
Equity securities with readily determinable fair value not held for trading	12,700,000		$ 300,000
Unrealized gains	$ 700,000
Unrealized loss		$ 400,000

Securities - Gross Realized Gai

Securities - Gross Realized Gains (Losses) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Proceeds from sales, redemptions and calls of debt securities available for sale	$ 14,013	$ 43,854
Gross realized gains	49	2,947
Gross realized losses	0	0
Realized gains, net on sales of debt investment securities	$ 49	$ 2,947

Securities - Unrealized Loss on

Securities - Unrealized Loss on Available for Sale Securities (Details) $ in Thousands	Mar. 31, 2022USD ($)contract	Dec. 31, 2021USD ($)contract
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Number of Securities | contract	269	72
Less Than 12 Months, Estimated Fair Value	$ 837,493	$ 307,285
Less Than 12 Months, Unrealized Loss	$ (35,524)	$ (2,870)
12 Months or More, Number of Securities | contract	138	131
12 Months or More, Estimated Fair Value	$ 87,580	$ 87,921
12 Months or More, Unrealized Loss	(5,098)	(2,867)
Total, Estimated Fair Value	925,073	395,206
Total, Unrealized Loss	$ (40,622)	$ (5,737)
U.S. government-sponsored enterprise debt securities
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Number of Securities | contract	162	29
Less Than 12 Months, Estimated Fair Value	$ 320,537	$ 54,562
Less Than 12 Months, Unrealized Loss	$ (10,917)	$ (1,434)
12 Months or More, Number of Securities | contract	61	59
12 Months or More, Estimated Fair Value	$ 30,500	$ 25,526
12 Months or More, Unrealized Loss	(3,116)	(1,004)
Total, Estimated Fair Value	351,037	80,088
Total, Unrealized Loss	$ (14,033)	$ (2,438)
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Number of Securities | contract	39	8
Less Than 12 Months, Estimated Fair Value	$ 196,600	$ 52,672
Less Than 12 Months, Unrealized Loss	$ (7,605)	$ (259)
12 Months or More, Number of Securities | contract	3	3
12 Months or More, Estimated Fair Value	$ 10,124	$ 10,286
12 Months or More, Unrealized Loss	(834)	(670)
Total, Estimated Fair Value	206,724	62,958
Total, Unrealized Loss	$ (8,439)	$ (929)
U.S. government agency debt securities
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Number of Securities | contract	67	35
Less Than 12 Months, Estimated Fair Value	$ 319,930	$ 200,051
Less Than 12 Months, Unrealized Loss	$ (16,999)	$ (1,177)
12 Months or More, Number of Securities | contract	74	69
12 Months or More, Estimated Fair Value	$ 46,956	$ 52,109
12 Months or More, Unrealized Loss	(1,148)	(1,193)
Total, Estimated Fair Value	366,886	252,160
Total, Unrealized Loss	$ (18,147)	$ (2,370)
Municipal bonds
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Number of Securities | contract	1
Less Than 12 Months, Estimated Fair Value	$ 426
Less Than 12 Months, Unrealized Loss	$ (3)
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	426
Total, Unrealized Loss	$ (3)

Securities - Held to Maturity S

Securities - Held to Maturity Securities - Amortized Cost (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	$ 112,008	$ 118,175
Gross Unrealized Gains	0	1,643
Gross Unrealized Losses	(6,472)	(741)
Estimated Fair Value	105,536	119,077
U.S. government agency debt securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	64,143	66,307
Gross Unrealized Gains	0	62
Gross Unrealized Losses	(3,816)	(363)
Estimated Fair Value	60,327	66,006
U.S. government-sponsored enterprise debt securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	47,865	51,868
Gross Unrealized Gains	0	1,581
Gross Unrealized Losses	(2,656)	(378)
Estimated Fair Value	45,209	53,071
Residential Mortgage Backed Securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	83,400	89,400
Estimated Fair Value	77,900	88,700
Commercial Mortgage Backed Securities
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	28,700	28,800
Estimated Fair Value	$ 27,600	$ 30,400

Securities - Held to Maturity_2

Securities - Held to Maturity Securities - Unrealized Losses (Details) $ in Thousands	Mar. 31, 2022USD ($)contract	Dec. 31, 2021USD ($)contract
Schedule of Held-to-maturity Securities [Line Items]
Less Than 12 Months, Number of Positions | contract	21	13
Estimated Fair Value
Less Than 12 Months	$ 95,678	$ 83,706
12 Months or More	9,858	0
Total	$ 105,536	$ 83,706
12 Months or More, Number of Positions | contract	1	0
Unrealized Loss
Less Than 12 Months	$ (5,217)	$ (741)
12 Months or More	(1,255)	0
Total	$ (6,472)	$ (741)
U.S. government agency debt securities
Schedule of Held-to-maturity Securities [Line Items]
Less Than 12 Months, Number of Positions | contract	12	11
Estimated Fair Value
Less Than 12 Months	$ 60,327	$ 61,037
12 Months or More	0	0
Total	$ 60,327	$ 61,037
12 Months or More, Number of Positions | contract	0	0
Unrealized Loss
Less Than 12 Months	$ (3,816)	$ (363)
12 Months or More	0	0
Total	$ (3,816)	$ (363)
U.S. government-sponsored enterprise debt securities
Schedule of Held-to-maturity Securities [Line Items]
Less Than 12 Months, Number of Positions | contract	9	2
Estimated Fair Value
Less Than 12 Months	$ 35,351	$ 22,669
12 Months or More	9,858	0
Total	$ 45,209	$ 22,669
12 Months or More, Number of Positions | contract	1	0
Unrealized Loss
Less Than 12 Months	$ (1,401)	$ (378)
12 Months or More	(1,255)	0
Total	$ (2,656)	$ (378)

Securities - Contractual Maturi

Securities - Contractual Maturities on Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Available for Sale, Amortized Cost
Within 1 year	$ 25,333
After 1 year through 5 years	100,274
After 5 years through 10 years	312,215
After 10 years	745,230
Amortized Cost	1,183,052	$ 1,159,544
Available for Sale, Estimated Fair Value
Within 1 year	25,432
After 1 year through 5 years	99,454
After 5 years through 10 years	306,855
After 10 years	714,044
Estimated Fair Value	1,145,785	1,175,319
Held to Maturity, Amortized Cost
Within 1 year	0
After 1 year through 5 years	8,101
After 5 years through 10 years	11,130
After 10 years	92,777
Amortized Cost	112,008	118,175
Held to Maturity, Estimated Fair Value
Within 1 year	0
After 1 year through 5 years	7,732
After 5 years through 10 years	10,785
After 10 years	87,019
Estimated Fair Value	$ 105,536	$ 119,077

Loans - Loans Held for Investme

Loans - Loans Held for Investments (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Jan. 31, 2022	Dec. 31, 2021	Mar. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 5,635,478		$ 5,409,440	$ 5,753,794
Real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	4,042,856		4,006,392	2,762,815
Real estate loans | Non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,570,006		1,540,590
Real estate loans | Multi-family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	540,726		514,679
Real estate loans | Land development and construction loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	296,609		327,246
Real estate loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	2,407,341	$ 12,400	2,382,515
Real estate loans | Single-family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	707,594		661,339
Real estate loans | Owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	927,921		962,538
Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,093,205		965,673	2,215,354
Loans to financial institutions and acceptances
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	13,730		13,710	18,073
Consumer loans and overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 485,687		$ 423,665	$ 757,552

Loans - Narrative (Details)

Loans - Narrative (Details) $ in Thousands	1 Months Ended		3 Months Ended
	Apr. 29, 2022USD ($)loan	Jan. 31, 2022USD ($)	Mar. 31, 2022USD ($)	Mar. 31, 2021USD ($)	Dec. 31, 2021USD ($)
Receivables [Abstract]
Loans pledged as collateral			$ 800,000		$ 1,100,000
Syndication facilities included in loans			342,000		373,000
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment, gross			5,635,478	$ 5,753,794	5,409,440
Proceeds from sale of loans held-for-sale			57,300
International
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment, gross			112,900		99,600
Loans charged-off			4	0
Consumer loans and overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment, gross			485,687	757,552	423,665
Consumer loans and overdrafts | International
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans charged-off			4	0
Real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment, gross			4,042,856	2,762,815	4,006,392
Real estate loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment, gross		$ 12,400	2,407,341		2,382,515
Proceeds from loans		9,800
Loans charged-off		$ 2,500
Real estate loans | Commercial real estate | Subsequent Event
Accounts, Notes, Loans and Financing Receivable [Line Items]
Number of loans disposed | loan	1
Proceeds from loans	$ 5,800
Real estate loans | International
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans charged-off			0	$ 0
Including Indirect Consumer Loans Purchased | Consumer loans and overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans held for investment, gross			$ 395,700		$ 297,000

Loans - Loans by Delinquency (D

Loans - Loans by Delinquency (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	$ 5,635,478	$ 5,409,440
Total Loans in Nonaccrual Status	46,958	49,773
Total Loans 90 Days or More Past Due and Accruing	10	8
Current
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	5,616,251	5,378,548
Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	19,227	30,892
30-59 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	3,899	1,289
60-89 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	1,037	1,461
Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	14,291	28,142
Real estate loans
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	4,042,856	4,006,392
Total Loans in Nonaccrual Status	27,312	21,076
Total Loans 90 Days or More Past Due and Accruing	0	0
Real estate loans | Current
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	4,036,462	4,001,529
Real estate loans | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	6,394	4,863
Real estate loans | 30-59 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	2,888	990
Real estate loans | 60-89 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	699	412
Real estate loans | Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	2,807	3,461
Real estate loans | Non-owner occupied
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	1,570,006	1,540,590
Total Loans in Nonaccrual Status	12,825	7,285
Total Loans 90 Days or More Past Due and Accruing	0	0
Real estate loans | Non-owner occupied | Current
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	1,570,006	1,540,590
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	540,726	514,679
Total Loans in Nonaccrual Status	0	0
Total Loans 90 Days or More Past Due and Accruing	0	0
Real estate loans | Multi-family residential | Current
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	540,726	514,679
Real estate loans | Multi-family residential | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	0	0
Real estate loans | Multi-family residential | 30-59 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	0	0
Real estate loans | Multi-family residential | 60-89 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	0	0
Real estate loans | Multi-family residential | Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	0	0
Real estate loans | Land development and construction loans
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	296,609	327,246
Total Loans in Nonaccrual Status	0	0
Total Loans 90 Days or More Past Due and Accruing	0	0
Real estate loans | Land development and construction loans | Current
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	296,609	327,246
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	2,407,341	2,382,515
Total Loans in Nonaccrual Status	12,825	7,285
Total Loans 90 Days or More Past Due and Accruing	0	0
Real estate loans | Commercial real estate | Current
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	2,407,341	2,382,515
Real estate loans | Commercial real estate | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	0	0
Real estate loans | Commercial real estate | 30-59 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	0	0
Real estate loans | Commercial real estate | 60-89 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	0	0
Real estate loans | Commercial real estate | Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	0	0
Real estate loans | Single-family residential
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	707,594	661,339
Total Loans in Nonaccrual Status	3,717	5,126
Total Loans 90 Days or More Past Due and Accruing	0	0
Real estate loans | Single-family residential | Current
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	703,003	657,882
Real estate loans | Single-family residential | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	4,591	3,457
Real estate loans | Single-family residential | 30-59 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	2,743	990
Real estate loans | Single-family residential | 60-89 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	436	412
Real estate loans | Single-family residential | Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	1,412	2,055
Real estate loans | Owner occupied
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	927,921	962,538
Total Loans in Nonaccrual Status	10,770	8,665
Total Loans 90 Days or More Past Due and Accruing	0	0
Real estate loans | Owner occupied | Current
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	926,118	961,132
Real estate loans | Owner occupied | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	1,803	1,406
Real estate loans | Owner occupied | 30-59 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	145	0
Real estate loans | Owner occupied | 60-89 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	263	0
Real estate loans | Owner occupied | Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	1,395	1,406
Commercial loans
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	1,093,205	965,673
Total Loans in Nonaccrual Status	19,178	28,440
Total Loans 90 Days or More Past Due and Accruing	0	0
Commercial loans | Current
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	1,080,403	939,685
Commercial loans | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	12,802	25,988
Commercial loans | 30-59 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	995	277
Commercial loans | 60-89 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	338	1,042
Commercial loans | Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	11,469	24,669
Loans to financial institutions and acceptances
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	13,730	13,710
Total Loans in Nonaccrual Status	0	0
Total Loans 90 Days or More Past Due and Accruing	0	0
Loans to financial institutions and acceptances | Current
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	13,730	13,710
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	485,687	423,665
Total Loans in Nonaccrual Status	468	257
Total Loans 90 Days or More Past Due and Accruing	10	8
Consumer loans and overdrafts | Current
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	485,656	423,624
Consumer loans and overdrafts | Total Past Due
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	31	41
Consumer loans and overdrafts | 30-59 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	16	22
Consumer loans and overdrafts | 60-89 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	0	7
Consumer loans and overdrafts | Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	$ 15	$ 12

Loans - Loans Held for Sale (De

Loans - Loans Held for Sale (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for sale at the lower of fair value or cost	$ 68,591	$ 143,195
Real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total real estate loans	69,049	143,195
Less: valuation allowance	458	0
Total loans held for sale at the lower of fair value or cost	68,591	143,195
Total loans held for sale at fair value	17,108	14,905
Total loans held for sale	85,699	158,100
Real estate loans | Non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total real estate loans	46,947	110,271
Real estate loans | Multi-family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total real estate loans	20,796	31,606
Real estate loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total real estate loans	67,743	141,877
Real estate loans | Single-family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for sale at fair value	16,272	14,905
Real estate loans | Owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total real estate loans	1,306	1,318
Real estate loans | Land development and construction loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Total loans held for sale at fair value	$ 836	$ 0

Allowance for Loan Losses - All

Allowance for Loan Losses - Allowances by Loan Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Allowance for Credit Losses
Balance at beginning of the period	$ 69,899	$ 110,902
Provision for loan losses	(10,000)	0
Recoveries	474	704
Balance at end of the period	56,051	110,940
Allowance for loan losses by impairment methodology, Individually evaluated	7,216	30,660
Allowance for loan losses by impairment methodology, Collectively evaluated	48,835	80,280
Allowance for credit loss	56,051	110,940	$ 69,899
Investment in loans, net of unearned income, Individually evaluated	49,752	89,044
Investment in loans, net of unearned income, Collectively evaluated	5,585,726	5,664,750
Total Loans, Net of Unearned Income	5,635,478	5,753,794	5,409,440
Domestic
Allowance for Credit Losses
Loans charged-off	(4,318)	(666)
International
Allowance for Credit Losses
Loans charged-off	(4)	0
Total Loans, Net of Unearned Income	112,900		99,600
Real Estate
Allowance for Credit Losses
Balance at beginning of the period	17,952	50,227
Provision for loan losses	(5,594)	(1,936)
Recoveries	4	0
Balance at end of the period	12,362	48,291
Allowance for loan losses by impairment methodology, Individually evaluated	477	2,918
Allowance for loan losses by impairment methodology, Collectively evaluated	11,885	45,373
Allowance for credit loss	12,362	48,291	17,952
Investment in loans, net of unearned income, Individually evaluated		19,892
Investment in loans, net of unearned income, Collectively evaluated		2,742,923
Total Loans, Net of Unearned Income	4,042,856	2,762,815	4,006,392
Real Estate | Financing Receivable
Allowance for Credit Losses
Investment in loans, net of unearned income, Individually evaluated	12,825
Investment in loans, net of unearned income, Collectively evaluated	2,362,355
Total Loans, Net of Unearned Income	2,375,180
Real Estate | Domestic
Allowance for Credit Losses
Loans charged-off	0	0
Real Estate | International
Allowance for Credit Losses
Loans charged-off	0	0
Commercial
Allowance for Credit Losses
Balance at beginning of the period	38,979	48,130
Provision for loan losses	(2,585)	702
Recoveries	300	605
Balance at end of the period	33,419	49,202
Allowance for loan losses by impairment methodology, Individually evaluated	6,021	26,665
Allowance for loan losses by impairment methodology, Collectively evaluated	27,398	22,537
Allowance for credit loss	33,419	49,202	38,979
Investment in loans, net of unearned income, Individually evaluated		60,891
Investment in loans, net of unearned income, Collectively evaluated		2,154,463
Total Loans, Net of Unearned Income	1,093,205	2,215,354	965,673
Commercial | Financing Receivable
Allowance for Credit Losses
Investment in loans, net of unearned income, Individually evaluated	32,500
Investment in loans, net of unearned income, Collectively evaluated	2,184,495
Total Loans, Net of Unearned Income	2,216,995
Commercial | Domestic
Allowance for Credit Losses
Loans charged-off	(3,275)	(235)
Commercial | International
Allowance for Credit Losses
Loans charged-off	0	0
Financial Institutions
Allowance for Credit Losses
Balance at beginning of the period	42	1
Provision for loan losses	(1)	0
Recoveries	0	0
Balance at end of the period	41	1
Allowance for loan losses by impairment methodology, Individually evaluated	0	0
Allowance for loan losses by impairment methodology, Collectively evaluated	41	1
Allowance for credit loss	41	1	42
Investment in loans, net of unearned income, Individually evaluated		0
Investment in loans, net of unearned income, Collectively evaluated		18,073
Total Loans, Net of Unearned Income	13,730	18,073	13,710
Financial Institutions | Financing Receivable
Allowance for Credit Losses
Investment in loans, net of unearned income, Individually evaluated	0
Investment in loans, net of unearned income, Collectively evaluated	13,730
Total Loans, Net of Unearned Income	13,730
Financial Institutions | Domestic
Allowance for Credit Losses
Loans charged-off	0	0
Financial Institutions | International
Allowance for Credit Losses
Loans charged-off	0	0
Consumer and Others
Allowance for Credit Losses
Balance at beginning of the period	12,926	12,544
Provision for loan losses	(1,820)	1,234
Recoveries	170	99
Balance at end of the period	10,229	13,446
Allowance for loan losses by impairment methodology, Individually evaluated	718	1,077
Allowance for loan losses by impairment methodology, Collectively evaluated	9,511	12,369
Allowance for credit loss	10,229	13,446	12,926
Investment in loans, net of unearned income, Individually evaluated		8,261
Investment in loans, net of unearned income, Collectively evaluated		749,291
Total Loans, Net of Unearned Income	485,687	757,552	$ 423,665
Consumer and Others | Financing Receivable
Allowance for Credit Losses
Investment in loans, net of unearned income, Individually evaluated	4,427
Investment in loans, net of unearned income, Collectively evaluated	1,025,146
Total Loans, Net of Unearned Income	1,029,573
Consumer and Others | Domestic
Allowance for Credit Losses
Loans charged-off	(1,043)	(431)
Consumer and Others | International
Allowance for Credit Losses
Loans charged-off	$ (4)	$ 0

Allowance for Loan Losses - Rec

Allowance for Loan Losses - Recorded Investment of Loan Sales (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Financing Receivable, Impaired [Line Items]
Amount of loan sales	$ 1,313	$ 1,173
Real Estate
Financing Receivable, Impaired [Line Items]
Amount of loan sales	0	0
Commercial
Financing Receivable, Impaired [Line Items]
Amount of loan sales	0	0
Financial Institutions
Financing Receivable, Impaired [Line Items]
Amount of loan sales	0	0
Consumer and Others
Financing Receivable, Impaired [Line Items]
Amount of loan sales	$ 1,313	$ 1,173

Allowance for Loan Losses - Imp

Allowance for Loan Losses - Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Financing Receivable, Impaired [Line Items]
Recorded Investment, With a Valuation Allowance	$ 14,909	$ 27,266
Recorded Investment, Without a Valuation Allowance	34,843	25,438
Recorded Investment, Total	49,752	52,704
Year Average	78,077	87,899
Total Unpaid Principal Balance	52,915	80,746
Valuation Allowance	7,216	11,791
Real estate loans
Financing Receivable, Impaired [Line Items]
Recorded Investment, With a Valuation Allowance	4,033	5,657
Recorded Investment, Without a Valuation Allowance	23,522	15,671
Recorded Investment, Total	27,555	21,328
Year Average	43,022	47,005
Total Unpaid Principal Balance	27,425	21,156
Valuation Allowance	1,027	1,334
Real estate loans | Non-owner occupied
Financing Receivable, Impaired [Line Items]
Recorded Investment, With a Valuation Allowance	1,360	1,452
Recorded Investment, Without a Valuation Allowance	11,465	5,833
Recorded Investment, Total	12,825	7,285
Year Average	24,260	23,185
Total Unpaid Principal Balance	12,887	7,349
Valuation Allowance	477	546
Real estate loans | Multi-family residential
Financing Receivable, Impaired [Line Items]
Recorded Investment, With a Valuation Allowance	0	0
Recorded Investment, Without a Valuation Allowance	0	0
Recorded Investment, Total	0	0
Year Average	2,482	5,324
Total Unpaid Principal Balance	0	0
Valuation Allowance	0	0
Real estate loans | Land development and construction loans
Financing Receivable, Impaired [Line Items]
Recorded Investment, With a Valuation Allowance	0	0
Recorded Investment, Without a Valuation Allowance	0	0
Recorded Investment, Total	0	0
Year Average	0	0
Total Unpaid Principal Balance	0	0
Valuation Allowance	0	0
Real estate loans | Commercial real estate
Financing Receivable, Impaired [Line Items]
Recorded Investment, With a Valuation Allowance	1,360	1,452
Recorded Investment, Without a Valuation Allowance	11,465	5,833
Recorded Investment, Total	12,825	7,285
Year Average	26,742	28,509
Total Unpaid Principal Balance	12,887	7,349
Valuation Allowance	477	546
Real estate loans | Single-family residential
Financing Receivable, Impaired [Line Items]
Recorded Investment, With a Valuation Allowance	2,267	3,689
Recorded Investment, Without a Valuation Allowance	1,694	1,689
Recorded Investment, Total	3,961	5,378
Year Average	5,842	7,619
Total Unpaid Principal Balance	3,917	5,316
Valuation Allowance	413	618
Real estate loans | Owner occupied
Financing Receivable, Impaired [Line Items]
Recorded Investment, With a Valuation Allowance	406	516
Recorded Investment, Without a Valuation Allowance	10,363	8,149
Recorded Investment, Total	10,769	8,665
Year Average	10,438	10,877
Total Unpaid Principal Balance	10,621	8,491
Valuation Allowance	137	170
Commercial loans
Financing Receivable, Impaired [Line Items]
Recorded Investment, With a Valuation Allowance	10,410	21,353
Recorded Investment, Without a Valuation Allowance	11,321	9,767
Recorded Investment, Total	21,731	31,120
Year Average	34,737	40,626
Total Unpaid Principal Balance	25,023	59,334
Valuation Allowance	5,884	10,292
Consumer loans and overdrafts
Financing Receivable, Impaired [Line Items]
Recorded Investment, With a Valuation Allowance	466	256
Recorded Investment, Without a Valuation Allowance	0	0
Recorded Investment, Total	466	256
Year Average	318	268
Total Unpaid Principal Balance	467	256
Valuation Allowance	$ 305	$ 165

Allowance for Loan Losses - TDR

Allowance for Loan Losses - TDR Loans (Details) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022USD ($)contract	Dec. 31, 2021USD ($)contract	Dec. 31, 2020USD ($)
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	17	17
Recorded Investment	$ 12,204	$ 12,928
Recorded investment	$ 49,752	$ 52,704
Real estate loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	6	6
Recorded Investment	$ 7,699	$ 7,923
Recorded investment	27,555	21,328
Real estate loans | South Florida
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	$ 8,600	$ 9,100
Real estate loans | Non-owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	1	1
Recorded Investment	$ 1,360	$ 1,452
Recorded investment	$ 12,825	$ 7,285
Write-offs			$ 1,900
Real estate loans | Single-family residential
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	1	1
Recorded Investment	$ 268	$ 258
Recorded investment	$ 3,961	$ 5,378
Real estate loans | Owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	4	4
Recorded Investment	$ 6,071	$ 6,213
Recorded investment	$ 10,769	$ 8,665
Real estate loans | Residential Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Financing receivable, not modified, number of contracts | contract	2	1
Recorded investment	$ 1,400	$ 800
Commercial loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	11	11
Recorded Investment	$ 4,505	$ 5,005
Recorded investment	21,731	31,120
Real Estate and Commercial | Owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Specific reserves	$ 600	$ 800

Allowance for Loan Losses - Cre

Allowance for Loan Losses - Credit Risk Quality (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Jan. 31, 2022	Dec. 31, 2021	Mar. 31, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	$ 5,635,478		$ 5,409,440	$ 5,753,794
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	5,550,854		5,283,998
Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	36,149		74,086
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	45,183		40,464
Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	3,292		10,892
Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0		0
Real estate loans
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	4,042,856		4,006,392	2,762,815
Real estate loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	4,004,753		3,943,493
Real estate loans | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	10,604		41,634
Real estate loans | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	26,196		19,870
Real estate loans | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	1,303		1,395
Real estate loans | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0		0
Real estate loans | Non-owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	1,570,006		1,540,590
Real estate loans | Non-owner occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	1,553,960		1,499,100
Real estate loans | Non-owner occupied | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	3,221		34,205
Real estate loans | Non-owner occupied | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	11,522		5,890
Real estate loans | Non-owner occupied | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	1,303		1,395
Real estate loans | Non-owner occupied | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0		0
Real estate loans | Multi-family residential
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	540,726		514,679
Real estate loans | Multi-family residential | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	540,726		514,679
Real estate loans | Multi-family residential | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0		0
Real estate loans | Multi-family residential | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0		0
Real estate loans | Multi-family residential | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0		0
Real estate loans | Multi-family residential | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0		0
Real estate loans | Land development and construction loans
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	296,609		327,246
Real estate loans | Land development and construction loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	296,609		327,246
Real estate loans | Land development and construction loans | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0		0
Real estate loans | Land development and construction loans | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0		0
Real estate loans | Land development and construction loans | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0		0
Real estate loans | Land development and construction loans | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0		0
Real estate loans | Commercial real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	2,407,341	$ 12,400	2,382,515
Real estate loans | Commercial real estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	2,391,295		2,341,025
Real estate loans | Commercial real estate | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	3,221		34,205
Real estate loans | Commercial real estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	11,522		5,890
Real estate loans | Commercial real estate | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	1,303		1,395
Real estate loans | Commercial real estate | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0		0
Real estate loans | Single-family residential
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	707,594		661,339
Real estate loans | Single-family residential | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	703,782		656,118
Real estate loans | Single-family residential | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0		0
Real estate loans | Single-family residential | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	3,812		5,221
Real estate loans | Single-family residential | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0		0
Real estate loans | Single-family residential | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0		0
Real estate loans | Owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	927,921		962,538
Real estate loans | Owner occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	909,676		946,350
Real estate loans | Owner occupied | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	7,383		7,429
Real estate loans | Owner occupied | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	10,862		8,759
Real estate loans | Owner occupied | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0		0
Real estate loans | Owner occupied | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0		0
Commercial loans
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	1,093,205		965,673	2,215,354
Commercial loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	1,047,152		903,400
Commercial loans | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	25,545		32,452
Commercial loans | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	18,519		20,324
Commercial loans | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	1,989		9,497
Commercial loans | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0		0
Loans to financial institutions and acceptances
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	13,730		13,710	18,073
Loans to financial institutions and acceptances | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	13,730		13,710
Loans to financial institutions and acceptances | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0		0
Loans to financial institutions and acceptances | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0		0
Loans to financial institutions and acceptances | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0		0
Loans to financial institutions and acceptances | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0		0
Consumer loans and overdrafts
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	485,687		423,665	$ 757,552
Consumer loans and overdrafts | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	485,219		423,395
Consumer loans and overdrafts | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0		0
Consumer loans and overdrafts | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	468		270
Consumer loans and overdrafts | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0		0
Consumer loans and overdrafts | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	$ 0		$ 0

Time Deposits (Details)

Time Deposits (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Time Deposits Disclosure [Abstract]
Time deposits, $100,000 or more	$ 800
Time deposits, $250,000 or more	361	$ 423
Brokered time deposits	$ 297	$ 290

Advances from the Federal Hom_3

Advances from the Federal Home Loan Bank (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended
	Apr. 29, 2022	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
2023		$ 104,441		$ 104,317
2024		100,000		0
2025		775,606		705,260
Advances from Federal Home Loan Banks		980,047		809,577
Loss on early extinguishment of advances from the Federal Home Loan Bank, net		714	$ 0
Loss on early repayments of advances from Federal Home Loan Banks		(180,000)
Subsequent Event
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Repayments	$ 150,000
Callable Option
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Advances from Federal Home Loan Banks		$ 350,000		$ 530,000
Minimum | Callable Option
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Fixed interest rate		0.85%		0.62%
Maximum | Callable Option
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Fixed interest rate		0.97%		0.97%
3-month LIBOR
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Interest Rate 2024		1.68%
3-month LIBOR | Minimum
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Interest Rate 2022				0.62%
Interest Rate 2023			0.62%
Interest Rate 2025		0.62%
3-month LIBOR | Maximum
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Interest Rate 2022				1.06%
Interest Rate 2023			1.06%
Interest Rate 2025		1.82%

Senior Notes (Details)

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

Subordinated notes (Details)

Subordinated notes (Details) - Subordinated Notes - 4.50% Fixed-to-Floating Rate and Due in March 15, 2032	Mar. 09, 2022USD ($)
Debt Instrument [Line Items]
Face amount	$ 30,000,000
Effective percentage	4.25%
Proceeds from issuance of debt	$ 29,100,000
Debt issuance costs	$ 900,000
Amortization period	10 years
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	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
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 | 3-M 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 | 3-M 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 | 3-M 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 | 3-M 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 | 3-M 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 Derivatives (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Other Assets
Derivatives, Fair Value [Line Items]
Derivative asset	$ 24,325	$ 21,870
Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative liability	25,267	22,198
Derivatives Designated as Hedging Instruments | Interest Rate Swap Contracts
Derivatives, Fair Value [Line Items]
Derivative liability	200	600
Derivatives Designated as Hedging Instruments | Interest Rate Swap Contracts | Other Assets
Derivatives, Fair Value [Line Items]
Derivative asset	0	0
Derivatives Designated as Hedging Instruments | Interest Rate Swap Contracts | Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative liability	157	615
Derivatives Not Designated as Hedging Instruments | Interest Rate Swap Contracts | Other Assets
Derivatives, Fair Value [Line Items]
Derivative asset	20,951	20,781
Derivatives Not Designated as Hedging Instruments | Interest Rate Swap Contracts | Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative liability	20,951	20,781
Derivatives Not Designated as Hedging Instruments | Interest Rate Swap Contracts | Customers | Other Assets
Derivatives, Fair Value [Line Items]
Derivative asset	3,338	18,858
Derivatives Not Designated as Hedging Instruments | Interest Rate Swap Contracts | Customers | Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative liability	17,613	1,923
Derivatives Not Designated as Hedging Instruments | Interest Rate Swap Contracts | Third Party Broker
Derivatives, Fair Value [Line Items]
Derivative liability		18,900
Derivatives Not Designated as Hedging Instruments | Interest Rate Swap Contracts | Third Party Broker | Other Assets
Derivatives, Fair Value [Line Items]
Derivative asset	17,613	1,923
Derivatives Not Designated as Hedging Instruments | Interest Rate Swap Contracts | Third Party Broker | Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative liability	3,338	18,858
Derivatives Not Designated as Hedging Instruments | Interest Rate Cap Contracts | Other Assets
Derivatives, Fair Value [Line Items]
Derivative asset	2,109	477
Derivatives Not Designated as Hedging Instruments | Interest Rate Cap Contracts | Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative liability	3,741	764
Derivatives Not Designated as Hedging Instruments | Interest Rate Cap Contracts | Customers | Other Assets
Derivatives, Fair Value [Line Items]
Derivative asset	0	0
Derivatives Not Designated as Hedging Instruments | Interest Rate Cap Contracts | Customers | Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative liability	3,741	764
Derivatives Not Designated as Hedging Instruments | Interest Rate Cap Contracts | Third Party Broker | Other Assets
Derivatives, Fair Value [Line Items]
Derivative asset	2,109	477
Derivatives Not Designated as Hedging Instruments | Interest Rate Cap Contracts | Third Party Broker | Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative liability	0	0
Derivatives Not Designated as Hedging Instruments | Mortgage Derivatives | Other Assets
Derivatives, Fair Value [Line Items]
Derivative asset	1,265	612
Derivatives Not Designated as Hedging Instruments | Mortgage Derivatives | Other Assets | Interest Rate Lock Commitments
Derivatives, Fair Value [Line Items]
Derivative asset	547	581
Derivatives Not Designated as Hedging Instruments | Mortgage Derivatives | Other Assets | Forward Contracts
Derivatives, Fair Value [Line Items]
Derivative asset	718	31
Derivatives Not Designated as Hedging Instruments | Mortgage Derivatives | Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative liability	418	38
Derivatives Not Designated as Hedging Instruments | Mortgage Derivatives | Other Liabilities | Interest Rate Lock Commitments
Derivatives, Fair Value [Line Items]
Derivative liability	4	0
Derivatives Not Designated as Hedging Instruments | Mortgage Derivatives | Other Liabilities | Forward Contracts
Derivatives, Fair Value [Line Items]
Derivative liability	$ 414	$ 38

Derivative Instruments - Narrat

Derivative Instruments - Narrative (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2022USD ($)instrument	Mar. 31, 2021USD ($)	Dec. 31, 2019USD ($)contract	Apr. 29, 2022USD ($)instrument	Dec. 31, 2021USD ($)instrument
Derivatives, Fair Value [Line Items]
Net unrealized losses in accumulated other comprehensive expected to be reclassified into expense in the next twelve months	$ 900,000
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 (loss) on termination of cash flow hedge			$ 8,900,000
FHLB, advances, reduction of interest expense	$ 300,000	$ 300,000
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
Notional amount	$ 64,200,000				$ 64,200,000
Amount of hedged item	64,200,000				$ 64,200,000
Unrealized gain (loss)	$ (200,000)	$ (200,000)
Derivatives Not Designated as Hedging Instruments | Interest Rate Swap Contracts | Customers
Derivatives, Fair Value [Line Items]
Number of instruments held | instrument	115				109
Notional amount	$ 682,400,000				$ 595,400,000
Derivatives Not Designated as Hedging Instruments | Credit Risk Contract
Derivatives, Fair Value [Line Items]
Number of instruments held | instrument	2				2
Notional amount	$ 32,000,000				$ 32,000,000
Derivatives Not Designated as Hedging Instruments | Interest Rate Cap Contracts | Customers
Derivatives, Fair Value [Line Items]
Number of instruments held | instrument	20				19
Notional amount	$ 435,600,000				$ 432,000,000
Derivatives Not Designated as Hedging Instruments | Interest Rate Cap Contracts | Third Party Broker
Derivatives, Fair Value [Line Items]
Number of instruments held | instrument	10				9
Notional amount	$ 187,000,000				$ 190,700,000
Derivatives Not Designated as Hedging Instruments | Interest Rate Cap Contracts | Third Party Broker | Subsequent Event
Derivatives, Fair Value [Line Items]
Number of instruments held | instrument				4
Notional amount				$ 140,000,000
Derivatives Not Designated as Hedging Instruments | Interest Rate Lock Commitments
Derivatives, Fair Value [Line Items]
Notional amount	88,900,000				17,900,000
Derivatives Not Designated as Hedging Instruments | Forward Contracts
Derivatives, Fair Value [Line Items]
Notional amount	37,300,000				$ 16,500,000
Effect of change in fair value	$ 300,000

Derivative Instruments - Credit

Derivative Instruments - Credit Risk (Details) - Interest Rate Swap Contracts - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Derivative [Line Items]
Fair value of derivative contracts	$ 21.1	$ 21.4
Derivatives Designated as Hedging Instruments
Derivative [Line Items]
Securities Pledged	1.1	2
Derivative liability	$ 0.2	0.6
Derivatives Not Designated as Hedging Instruments | Third Party Broker
Derivative [Line Items]
Securities Pledged		23.4
Derivative liability		$ 18.9

Leases - Additional Information

Leases - Additional Information (Details) - USD ($) $ in Thousands	2 Months Ended	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Leases [Abstract]
Variable lease cost		$ 447	$ 333
Rental income	$ 600	700
Operating lease right-of-use assets	139,477	139,477		$ 141,139
Total lease obligations	141,662	141,662		143,000
Short-term lease liability	$ 6,000	$ 6,000		$ 6,400
Minimum
Lessee, Lease, Description [Line Items]
Term of contract	1 year	1 year
Maximum
Lessee, Lease, Description [Line Items]
Term of contract	44 years	44 years

Leases - Cost (Details)

Leases - Cost (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Lease cost
Operating lease cost	$ 4,362	$ 1,909
Short-term lease cost	22	155
Variable lease cost	447	333
Sublease income	(771)	(108)
Total lease cost, net	4,060	2,289
Cash paid for amounts included in the measurement of operating lease liabilities	3,640	1,765
Operating lease right-of-use asset obtained in exchange for operating lease liability	$ 1,594	$ 1,044
Weighted average remaining lease term for operating leases	19 years	21 years
Weighted average discount rate for operating leases	5.93%	5.72%

Leases - Maturities (Details)

Leases - Maturities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Twelve Months Ended March 31,
2022	$ 10,719
2023	12,051
2024	12,045
2025	11,980
2026	12,159
Thereafter	188,887
Total minimum payments required	247,841
Less: implied interest	(106,179)
Total lease obligations	$ 141,662	$ 143,000

Stock-based Incentive Compens_3

Stock-based Incentive Compensation Plan - Additional Information (Details) - USD ($) $ in Millions	Feb. 16, 2022	Mar. 31, 2022	Mar. 31, 2021
Restricted Stock
Defined Contribution Plan Disclosure [Line Items]
Grants in period (in shares)	104,762	104,762
Restricted Stock | Class A Common Stock
Defined Contribution Plan Disclosure [Line Items]
Share-based compensation expense		$ 0.7	$ 0.5
Nonvested awards, compensation not yet recognized		$ 5.3
Nonvested awards, period of recognition		1 year 9 months 18 days
RSUs
Defined Contribution Plan Disclosure [Line Items]
Grants in period (in shares)	26,414	29,414
RSUs | Executive
Defined Contribution Plan Disclosure [Line Items]
Grants in period (in shares)	3,000
PSUs
Defined Contribution Plan Disclosure [Line Items]
Grants in period (in shares)	26,415

Stock-based Incentive Compens_4

Stock-based Incentive Compensation Plan - Restricted Stock (Details) - $ / shares	Feb. 16, 2022	Mar. 31, 2022
Number of restricted shares (in shares)
Non-vested shares, end of year (in shares)		526,755
Restricted Stock
Number of restricted shares (in shares)
Non-vested shares, beginning of year (in shares)		229,779
Grants in period (in shares)	104,762	104,762
Vested (in shares)		(58,210)
Forfeited (in shares)		(1,000)
Non-vested shares, end of year (in shares)		275,331
Weighted-average grant date fair value (in dollars per share)
Non-vested shares, beginning of year (in dollars per share)		$ 18.61
Granted, Weighted average grant date fair value (in dollars per share)		33.98
Vested, Weighted average grant date fair value (in dollars per share)		16.59
Forfeited, Weighted average grant date fair value (in dollars per share)		33.98
Non-vested shares, end of year (in dollars per share)		$ 24.82

Stock-based Incentive Compens_5

Stock-based Incentive Compensation Plan - Restricted Stock Units, Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	Feb. 16, 2022	Mar. 31, 2022	Mar. 31, 2021
PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares)	26,415
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares)	26,414	29,414
Grants in period, weighted average grant date fair value (in dollars per share)		$ 33.98
RSUs | Executive
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares)	3,000
RSUs and PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation expense		$ 0.5	$ 0.4
Nonvested awards, compensation not yet recognized		$ 3.4
Nonvested awards, period of recognition		2 years

Stock-based Incentive Compens_6

Stock-based Incentive Compensation Plan - Restricted Stock Units (Details) - $ / shares	Feb. 16, 2022	Mar. 31, 2022
Number of restricted shares (in shares)
Non-vested shares, end of year (in shares)		526,755
Stock-settled RRSUs
Number of restricted shares (in shares)
Non-vested shares, beginning of year (in shares)		121,739
Grants in period (in shares)		29,414
Vested (in shares)		(36,928)
Forfeited (in shares)		0
Non-vested shares, end of year (in shares)		114,225
Weighted-average grant date fair value (in dollars per share)
Non-vested shares, beginning of year (in dollars per share)		$ 17.21
Granted, Weighted average grant date fair value (in dollars per share)		33.98
Vested, Weighted average grant date fair value (in dollars per share)		16.65
Forfeited, Weighted average grant date fair value (in dollars per share)		0
Non-vested shares, end of year (in dollars per share)		$ 21.71
Cash-settled RSUs
Number of restricted shares (in shares)
Non-vested shares, beginning of year (in shares)		6,573
Grants in period (in shares)		0
Vested (in shares)		0
Forfeited (in shares)		0
Non-vested shares, end of year (in shares)		6,573
Weighted-average grant date fair value (in dollars per share)
Non-vested shares, beginning of year (in dollars per share)		$ 22.82
Granted, Weighted average grant date fair value (in dollars per share)		0
Vested, Weighted average grant date fair value (in dollars per share)		0
Forfeited, Weighted average grant date fair value (in dollars per share)		0
Non-vested shares, end of year (in dollars per share)		$ 22.82
RSUs
Number of restricted shares (in shares)
Non-vested shares, beginning of year (in shares)		128,312
Grants in period (in shares)	26,414	29,414
Vested (in shares)		(36,928)
Forfeited (in shares)		0
Non-vested shares, end of year (in shares)		120,798
Weighted-average grant date fair value (in dollars per share)
Non-vested shares, beginning of year (in dollars per share)		$ 17.62
Granted, Weighted average grant date fair value (in dollars per share)		33.98
Vested, Weighted average grant date fair value (in dollars per share)		16.65
Forfeited, Weighted average grant date fair value (in dollars per share)		0
Non-vested shares, end of year (in dollars per share)		$ 21.90
Stock-settled PSUs
Number of restricted shares (in shares)
Non-vested shares, beginning of year (in shares)		110,784
Grants in period (in shares)		26,415
Vested (in shares)		0
Forfeited (in shares)		0
Non-vested shares, end of year (in shares)		137,199
Weighted-average grant date fair value (in dollars per share)
Non-vested shares, beginning of year (in dollars per share)		$ 13.57
Granted, Weighted average grant date fair value (in dollars per share)		33.63
Vested, Weighted average grant date fair value (in dollars per share)		0
Forfeited, Weighted average grant date fair value (in dollars per share)		0
Non-vested shares, end of year (in dollars per share)		$ 17.43

Income Taxes (Details)

Income Taxes (Details)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Tax Disclosure [Abstract]
Effective income tax rate	21.10%	20.15%

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive (loss) Income (“AOCL/AOCI”) - Components of AOCL (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Line Items]
Before Tax Amount	$ (32,872)	$ 20,050
Tax Effect	8,448	(4,833)
Net of Tax Amount	(24,424)	15,217
Net unrealized holding (losses) gains on debt securities available for sale
Accumulated Other Comprehensive Income (Loss) [Line Items]
Before Tax Amount	(37,267)	15,775
Tax Effect	9,581	(3,788)
Net of Tax Amount	(27,686)	11,987
Net unrealized holding gains on interest rate swaps designated as cash flow hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Before Tax Amount	4,395	4,275
Tax Effect	(1,133)	(1,045)
Net of Tax Amount	$ 3,262	$ 3,230

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive (loss) Income (“AOCL/AOCI”) - Components of Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Before Tax Amount
Total other comprehensive (loss) income, Before Tax Amount	$ (52,922)	$ (15,559)
Tax Effect
Total other comprehensive (loss) income, Tax Effect	13,281	3,804
Net of Tax Amount
Reclassification adjustment for net gains (losses) included in net income, Net of Tax Amount	(128)	(2,325)
Other comprehensive loss	(39,641)	(11,755)
Net unrealized holding losses on debt securities available for sale:
Before Tax Amount
Change in fair value arising during the period, Before Tax Amount	(52,993)	(12,528)
Reclassification adjustment for net gains (losses) included in net income, Before Tax Amount	(49)	(2,947)
Total other comprehensive (loss) income, Before Tax Amount	(53,042)	(15,475)
Tax Effect
Change in fair value arising during the period, Tax Effect	13,356	3,062
Reclassification adjustment for net gains (losses) included in net income, Tax Effect	13	721
Total other comprehensive (loss) income, Tax Effect	13,369	3,783
Net of Tax Amount
Change in fair value arising during the period, Net of Tax Amount	(39,637)	(9,466)
Reclassification adjustment for net gains (losses) included in net income, Net of Tax Amount	(36)	(2,226)
Other comprehensive loss	(39,673)	(11,692)
Net unrealized holding gains (losses) on interest rate swaps designated as cash flow hedges:
Before Tax Amount
Change in fair value arising during the period, Before Tax Amount	244	47
Reclassification adjustment for net gains (losses) included in net income, Before Tax Amount	(124)	(131)
Total other comprehensive (loss) income, Before Tax Amount	120	(84)
Tax Effect
Change in fair value arising during the period, Tax Effect	(120)	(11)
Reclassification adjustment for net gains (losses) included in net income, Tax Effect	32	32
Total other comprehensive (loss) income, Tax Effect	(88)	21
Net of Tax Amount
Change in fair value arising during the period, Net of Tax Amount	124	36
Reclassification adjustment for net gains (losses) included in net income, Net of Tax Amount	(92)	(99)
Other comprehensive loss	$ 32	$ (63)

Stockholders_ Equity - Common S

Stockholders’ Equity - Common Stock (Details) - shares	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Class of Stock [Line Items]
Common stock, shares issued (in shares)	34,350,822	35,883,320
Common stock, shares outstanding (in shares)	34,350,822	35,883,320
Class A Common Stock | New Class A Common Stock Repurchase Program
Class of Stock [Line Items]
Stock held as treasury (in shares)	0	0
Common Stock | Class A Common Stock
Class of Stock [Line Items]
Common stock, shares issued (in shares)		35,883,320
Common stock, shares outstanding (in shares)	34,350,822	35,883,320	29,001,646	28,806,344

Stockholders_ Equity - Dividend

Stockholders’ Equity - Dividends (Details) - Class A Common Stock - USD ($) $ / shares in Units, $ in Millions	Apr. 13, 2022	Jan. 19, 2022
Class of Stock [Line Items]
Dividends, declared (in dollars per share)		$ 0.09
Dividend paid		$ 3.2
Subsequent Event
Class of Stock [Line Items]
Dividends, declared (in dollars per share)	$ 0.09

Contingencies (Details)

Contingencies (Details) $ in Thousands	Mar. 31, 2022USD ($)
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Approximate Contract Amount	$ 903,932
Commitments to extend credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Approximate Contract Amount	885,910
Standby letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Approximate Contract Amount	15,521
Commercial letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Approximate Contract Amount	$ 2,501

Fair Value Measurements - Asset

Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Debt securities available for sale
Debt securities available for sale	$ 1,145,785	$ 1,175,319
Equity securities with readily determinable fair value not held for trading	13,370	252
Securities	1,324,969	1,341,241
Mortgage loans held for sale (at fair value)	17,108	14,905
Fair Value, Measurements, Recurring
Debt securities available for sale
Debt securities available for sale	1,145,785	1,175,319
Equity securities with readily determinable fair value not held for trading	13,370	252
Securities	1,159,155	1,175,571
Mortgage loans held for sale (at fair value)	17,108	14,905
Bank owned life insurance	224,348	223,006
Mortgage servicing rights (MSRs)	912	636
Derivative instruments	24,325	21,870
Assets measured at fair value	1,425,848	1,435,988
Liabilities
Derivative instruments	25,267	22,198
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
Equity securities with readily determinable fair value not held for trading	13,370	0
Securities	13,370
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	13,370	0
Liabilities
Derivative instruments	0	0
Fair Value, Measurements, Recurring | Third-Party Models with Observable Market Inputs (Level 2)
Debt securities available for sale
Debt securities available for sale	1,145,785	1,175,319
Equity securities with readily determinable fair value not held for trading	0	252
Securities	1,145,785	1,175,571
Mortgage loans held for sale (at fair value)	17,108	14,905
Bank owned life insurance	224,348	223,006
Mortgage servicing rights (MSRs)	0	0
Derivative instruments	24,325	21,870
Assets measured at fair value	1,411,566	1,435,352
Liabilities
Derivative instruments	25,267	22,198
Fair Value, Measurements, Recurring | Internal Models with Unobservable Market Inputs (Level 3)
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)	912	636
Derivative instruments	0	0
Assets measured at fair value	912	636
Liabilities
Derivative instruments	0	0
U.S. government-sponsored enterprise debt securities
Debt securities available for sale
Debt securities available for sale	394,401	450,773
U.S. government-sponsored enterprise debt securities | Fair Value, Measurements, Recurring
Debt securities available for sale
Debt securities available for sale	394,401	450,773
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	394,401	450,773
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
Debt securities available for sale
Debt securities available for sale	359,285	357,790
Corporate debt securities | Fair Value, Measurements, Recurring
Debt securities available for sale
Debt securities available for sale	359,285	357,790
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	359,285	357,790
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
Debt securities available for sale
Debt securities available for sale	383,537	361,906
U.S. government agency debt securities | Fair Value, Measurements, Recurring
Debt securities available for sale
Debt securities available for sale	383,537	361,906
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	383,537	361,906
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
Debt securities available for sale
Debt securities available for sale	5,000
Collateralized loan obligations | Fair Value, Measurements, Recurring
Debt securities available for sale
Debt securities available for sale	5,000
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
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	5,000
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
Municipal bonds | Fair Value, Measurements, Recurring
Debt securities available for sale
Debt securities available for sale	2,062	2,348
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	2,062	2,348
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
Debt securities available for sale
Debt securities available for sale	1,500	2,502
U.S treasury securities | Fair Value, Measurements, Recurring
Debt securities available for sale
Debt securities available for sale	1,500	2,502
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	1,500	2,502
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 - Narra

Fair Value Measurements - Narrative (Details) - USD ($)	Mar. 31, 2022	Dec. 31, 2021
Fair Value Disclosures [Abstract]
Minimum outstanding balance of loans for third party appraisal	$ 1,000,000
Fair Value, Measurements, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets (liabilities) measured at fair value	$ 0	$ 0

Fair Value Measurements - Ass_2

Fair Value Measurements - Assets Measured at Fair Value on a Nonrecurring Basis (Details) - Fair Value, Measurements, Nonrecurring - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	$ 89,929	$ 34,473
Total Impairments	26,873	26,414
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	11,618	24,753
Total Impairments	26,334	26,334
Other Real Estate Owned
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	9,720	9,720
Total Impairments	80	80
Loans held for sale at the lower cost or fair value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	68,591
Total Impairments	459
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	0
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
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	0
Quoted Prices in Active Markets for Identical Assets (Level 1) | Loans held for sale at the lower cost or fair value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	0
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	68,591	0
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
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	0
Significant Other Observable Inputs (Level 2) | Loans held for sale at the lower cost or fair value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	68,591
Significant Other Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	21,338	34,473
Significant Other 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	11,618	24,753
Significant Other 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	9,720	$ 9,720
Significant Other Unobservable Inputs (Level 3) | Loans held for sale at the lower cost or fair value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	$ 0

Fair Value Measurements - Quant

Fair Value Measurements - Quantitative Information about Significant Unobservable Inputs Used in Fair Value Measurements (Details) - Internal Models with Unobservable Market Inputs (Level 3)	Mar. 31, 2022
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
Other Real Estate Owned | Minimum | Typical Discount | Appraisal value, as adjusted
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Unobservable Input	0.06
Other Real Estate Owned | 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 - Summa

Fair Value Measurements - Summary of Financial Instruments Where Fair Value Differs from Carrying Value (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Carrying Value
Financial assets:
Loans	$ 2,579,054	$ 2,619,461
Financial liabilities:
Time deposits	950,836	1,048,078
Advances from the FHLB	980,047	809,577
Junior subordinated debentures	64,178	64,178
Carrying Value | Senior Notes
Financial liabilities:
Senior notes	58,973	58,894
Carrying Value | Subordinated Notes
Financial liabilities:
Junior subordinated debentures	29,156	0
Estimated Fair Value
Financial assets:
Loans	2,528,216	2,559,280
Financial liabilities:
Time deposits	947,416	1,057,759
Advances from the FHLB	971,547	819,268
Junior subordinated debentures	63,050	61,212
Estimated Fair Value | Senior Notes
Financial liabilities:
Senior notes	61,124	63,214
Estimated Fair Value | Subordinated Notes
Financial liabilities:
Junior subordinated debentures	$ 29,156	$ 0

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Earnings Per Share [Abstract]
Net income before attribution of noncontrolling interest	$ 14,874	$ 14,459
Noncontrolling interest	(1,076)	0
Net income available to common stockholders	$ 15,950	$ 14,459
Basic weighted average shares outstanding (in shares)	34,819,984	37,618,198
Dilutive effect of share-based compensation awards (in shares)	294,059	227,669
Diluted weighted average shares outstanding (in shares)	35,114,043	37,845,867
Basic earnings per common share (in dollars per share)	$ 0.46	$ 0.38
Diluted earnings per common share (in dollars per share)	$ 0.45	$ 0.38
Non-vested shares (in shares)	526,755	562,648