Amerant Bancorp (AMTB) 10-Q 7 May 21 2021 Q1 Quarterly report Financial data

Cover Page

Cover Page - shares	3 Months Ended
	Mar. 31, 2021	May 06, 2021
Entity Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2021
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
Entity Current Reporting Status	Yes
Entity Interactive Data Current	No
Entity Filer Category	Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Central Index Key	0001734342
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
Amendment Flag	false
Class A Common Stock
Entity Information [Line Items]
Title of 12(b) Security	Class A Common Stock
Trading Symbol	AMTB
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding		29,001,646
Class B Common Stock
Entity Information [Line Items]
Title of 12(b) Security	Class B Common Stock
Trading Symbol	AMTBB
Security Exchange Name	NASDAQ
Entity Common Stock, Shares Outstanding		8,748,667

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Assets
Cash and due from banks	$ 37,744	$ 30,179
Interest earning deposits with banks	195,755	184,207
Cash and cash equivalents	233,499	214,386
Securities
Debt securities available for sale	1,190,201	1,225,083
Debt securities held to maturity	104,657	58,127
Equity securities with readily determinable fair value not held for trading	23,965	24,342
Federal Reserve Bank and Federal Home Loan Bank stock	56,469	65,015
Securities	1,375,292	1,372,567
Loans held for sale	1,044	0
Loans held for investment, gross	5,753,794	5,842,337
Less: Allowance for loan losses	110,940	110,902
Loans held for investment, net	5,642,854	5,731,435
Bank owned life insurance	218,903	217,547
Premises and equipment, net	109,071	109,990
Deferred tax assets, net	15,607	11,691
Goodwill	19,506	19,506
Accrued interest receivable and other assets	135,322	93,771
Total assets	7,751,098	7,770,893
Deposits
Noninterest bearing	977,595	872,151
Interest bearing	1,324,127	1,230,054
Savings and money market	1,494,227	1,587,876
Time	1,882,130	2,041,562
Total deposits	5,678,079	5,731,643
Advances from the Federal Home Loan Bank	1,050,000	1,050,000
Senior notes	58,656	58,577
Junior subordinated debentures held by trust subsidiaries	64,178	64,178
Accounts payable, accrued liabilities and other liabilities	115,171	83,074
Total liabilities	6,966,084	6,987,472
Contigencies (Note 16)
Stockholders’ equity
Additional paid in capital	304,448	305,569
Retained earnings	456,861	442,402
Accumulated other comprehensive income	19,909	31,664
Total stockholders' equity	785,014	783,421
Total liabilities and stockholders' equity	7,751,098	7,770,893
Class A Common Stock
Stockholders’ equity
Common stock	2,904	2,882
Class B Common Stock
Stockholders’ equity
Common stock	$ 892	$ 904

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2021	Dec. 31, 2020
Class A Common Stock
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, shares authorized (in shares)	400,000,000	400,000,000
Common stock, shares issued (in shares)	29,001,646	28,806,344
Common stock, shares outstanding (in shares)	29,001,646	28,806,344
Class B Common Stock
Common stock, par value (in dollars per share)	$ 0.10	$ 0.10
Common stock, shares authorized (in shares)	100,000,000	100,000,000
Common stock, shares issued (in shares)	8,920,315	9,036,352
Common stock, shares outstanding (in shares)	8,920,315

Consolidated Statements of Oper

Consolidated Statements of Operations and Comprehensive (Loss) Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Interest income
Loans	$ 52,771	$ 59,788
Investment securities	7,507	11,065
Interest earning deposits with banks	51	462
Total interest income	60,329	71,315
Interest expense
Interest bearing demand deposits	113	135
Savings and money market deposits	980	3,266
Time deposits	7,360	13,484
Advances from the Federal Home Loan Bank	2,758	4,412
Senior notes	942	0
Junior subordinated debentures	607	789
Total interest expense	12,760	22,086
Net interest income	47,569	49,229
Provision for loan losses	0	22,000
Net interest income after provision for loan losses	47,569	27,229
Noninterest income
Deposits and service fees	4,106	4,290
Brokerage, advisory and fiduciary activities	4,603	4,133
Change in cash surrender value of bank owned life insurance	1,356	1,414
Securities gains, net	2,582	9,620
Cards and trade finance servicing fees	339	395
Loss on early extinguishment of advances from the Federal Home Loan Bank, net	0	(7)
Other noninterest income	1,177	2,065
Total noninterest income	14,163	21,910
Noninterest expense
Salaries and employee benefits	26,427	29,326
Occupancy and equipment	4,488	3,803
Telecommunication and data processing	3,727	3,464
Professional and other services fees	3,784	2,954
Depreciation and amortization	1,786	1,959
FDIC assessments and insurance	1,755	1,118
Other operating expenses	1,658	2,243
Total noninterest expenses	43,625	44,867
Income before income tax expense	18,107	4,272
Income tax expense	(3,648)	(890)
Net income	14,459	3,382
Other comprehensive (loss) income, net of tax
Net unrealized holding (losses) gains on debt securities available for sale arising during the period	(9,466)	26,702
Net unrealized holding gains (losses) on cash flow hedges arising during the period	36	(1,514)
Reclassification adjustment for items included in net income	(2,325)	(7,305)
Other comprehensive (loss) income	(11,755)	17,883
Comprehensive income	$ 2,704	$ 21,265
Earnings Per Share (Note 18):
Basic earnings (loss) per common share (in dollars per share)	$ 0.38	$ 0.08
Diluted earnings (loss) per common share (in dollars per share)	$ 0.38	$ 0.08

Consolidated Statements of Chan

Consolidated Statements of Changes in Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Class A	Class B	Common StockClass A	Common StockClass B	Additional Paid in Capital	Treasury Stock	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Shares outstanding (in shares) at Dec. 31, 2019				28,927,576	14,218,596
Beginning balance at Dec. 31, 2019	$ 834,701			$ 2,893	$ 1,775	$ 419,048	$ (46,373)	$ 444,124	$ 13,234
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Repurchase of Class B common stock (in shares)					(932,459)
Repurchase of Class B common stock	(15,239)						(15,239)
Treasury stock retired	0				$ (446)	(61,166)	61,612
Restricted stock issued (in shares)				6,591
Restricted stock issued	0			$ 1		(1)
Restricted stock surrendered (in shares)				(129)
Restricted stock surrendered	(2)					(2)
Restricted stock forfeited (in shares)				(54,462)
Restricted stock forfeited	0			$ (6)		6
Stock-based compensation expense	392					392
Net income (loss)	3,382							3,382
Other comprehensive (loss) income	17,883								17,883
Shares outstanding (in shares) at Mar. 31, 2020				28,879,576	13,286,137
Ending balance at Mar. 31, 2020	841,117			$ 2,888	$ 1,329	358,277	0	447,506	31,117
Shares outstanding (in shares) at Dec. 31, 2020		28,806,344		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 Class B common stock (in shares)					(116,037)
Repurchase of Class B common stock	(1,855)						(1,855)
Treasury stock retired	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)					(13)
Stock-based compensation expense	757					757
Net income (loss)	14,459							14,459
Other comprehensive (loss) income	(11,755)								(11,755)
Shares outstanding (in shares) at Mar. 31, 2021		29,001,646	8,920,315	29,001,646	8,920,315
Ending balance at Mar. 31, 2021	$ 785,014			$ 2,904	$ 892	$ 304,448	$ 0	$ 456,861	$ 19,909

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash flows from operating activities
Net income	$ 14,459	$ 3,382
Adjustments to reconcile net income to net cash provided by operating activities
Provision for loan losses	0	22,000
Net premium amortization on securities	3,591	3,775
Depreciation and amortization	1,786	1,959
Stock-based compensation expense	757	392
Change in cash surrender value of bank owned life insurance	(1,356)	(1,414)
Securities gains, net	(2,582)	(9,620)
Deferred taxes and others	(99)	(5,255)
Loss on early extinguishment of advances from the FHLB, net	0	7
Net changes in operating assets and liabilities:
Accrued interest receivable and other assets	(3,229)	(1,539)
Accounts payable, accrued liabilities and other liabilities	(6,305)	(10,509)
Net cash provided by operating activities	7,022	3,178
Purchases of investment securities:
Available for sale	(96,197)	(197,522)
Held to maturity securities	(50,274)	0
Federal Home Loan Bank stock	0	(8,538)
Purchases of investment securities	(146,471)	(206,060)
Maturities, sales, calls and paydowns of investment securities:
Available for sale	115,125	196,698
Held to maturity	3,578	3,382
Federal Home Loan Bank stock	8,547	7,349
Maturities, sales, calls and paydowns of investment securities	127,250	207,429
Net decrease in loans	86,376	61,641
Proceeds from loan sales	1,173	13,109
Net purchases of premises and equipment and others	(805)	(1,321)
Net cash provided by investing activities	67,523	74,798
Cash flows from financing activities
Net increase (decrease) in demand, savings and money market accounts	105,868	(36,038)
Net (decrease) increase in time deposits	(159,432)	121,107
Proceeds from Advances from the Federal Home Loan Bank	0	280,000
Repayments of Advances from the Federal Home Loan Bank	0	(250,007)
Redemption of junior subordinated debentures	0	(28,068)
Repurchase of common stock - Class B	(1,855)	(15,239)
Common stock retired to cover tax withholding	(13)	(2)
Net cash (used in) provided by financing activities	(55,432)	71,753
Net increase in cash and cash equivalents	19,113	149,729
Cash and cash equivalents
Beginning of period	214,386	121,324
End of period	233,499	271,053
Supplemental disclosures of cash flow information
Cash paid for Interest	11,736	21,890
Cash paid for Income taxes	324	295
Initial recognition of operating lease right-of-use assets	55,670	0
Initial recognition of operating lease liabilities	$ 56,024	$ 0

Business, Basis of Presentation

Business, Basis of Presentation and Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2021
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, 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 Bank”) and the Federal Home Loan Bank of Atlanta (“FHLB”). The Bank has three principal subsidiaries, Amerant Investments, Inc., a securities broker-dealer (“Amerant Investments”), Amerant Trust, N.A, a non-depository trust company (“Amerant Trust”), and Elant Bank & Trust (the “Cayman Bank”), a bank and trust company domiciled in the Cayman Islands acquired in November 2019. In December 2020, the Bank joined a third party to form Amerant Mortgage, LLC. (“Amerant Mortgage”). In March 2021, the Bank and Amerant Trust received authorization to merge Amerant Trust with and into the Bank, with the Bank as sole survivor, effective on April 1, 2021. The Company’s Class A common stock, par value $0.10 per common share, and Class B common stock, par value $0.10 per common share, are listed and trade on the Nasdaq Global Select Market under the symbols “AMTB” and “AMTBB,” respectively. Stock Repurchase Program On March 10, 2021, the Company’s Board of Directors approved a stock repurchase program which provides for the potential repurchase of up to $40 million of shares of the Company’s Class B common stock (the “2021 Stock Repurchase Program”). For more information about the 2021 Stock Repurchase Program, see Note 15 to our unaudited interim financial statements in this Form 10-Q. 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 resulting in a 150-basis-point reduction in the federal funds rate, and the enactment of the Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”). The CARES Act provided emergency economic relief to individuals, small businesses, mid-size companies, large corporations, hospitals and other public health facilities, and state and local governments, and allocated the Small Business Administration, or SBA, $350.0 billion to provide loans of up to $10.0 million per small business as defined in the CARES Act. On April 2, 2020, the Bank began participating in the SBA’s Paycheck Protection Program, or “PPP”, by providing loans to these businesses to cover payroll, rent, mortgage, healthcare, and utilities costs, among other essential expenses. In early January 2021, a third round of PPP loans provided additional stimulus relief to small businesses and individuals who are self-employed or independent contractors. As of March 30, 2021, total PPP loans were $164.8 million, or 2.9% of total loans, compared to $198.5 million, or 3.4% of total loans as of December 31, 2020. The Company estimates as of March 31, 2021, there were $173.2 million of deposits related to the PPP compared to $95.4 million as of December 31, 2020. On May 4, 2021, the Company entered into an agreement to sell to a third party, in cash, PPP loans with an outstanding balance of approximately $95.1 million, and expects to realize a pre-tax gain on sale of approximately $3.8 million. The Company retained no loan servicing rights. Loan 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 in the second, third and fourth quarters of 2020, and first quarter of 2021. In the first quarter of 2021, the Company also began to selectively offer additional temporary loan modifications that allow it to extend the deferral and/or forbearance period beyond 180 days. Consistent with accounting and regulatory guidance, temporary modifications granted under these programs are not considered troubled debt restructurings, or TDRs. Loans which have been modified under these programs totaled $1.1 billion as of March 31, 2021. As of March 31, 2021, modified loans totaling $62.1 million, or 1.1% of total ($43.4 million, or 0.7%, at December 31, 2020), were still under the deferral and/or forbearance period. 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 SEC 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, 2020 and 2019 and for each of the three years in the period ended December 31, 2020 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 Form 10-K for the year ended December 31, 2020, filed with the Securities and Exchange Commission (“SEC”), on March 19, 2021 (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. The COVID-19 pandemic has severely restricted the level of economic activity in the U.S. and around the world since March 2020. Several states and cities across the U.S., including the States of Florida, New York and Texas and cities where we have banking centers, LPOs and where our principal place of business is located, have also implemented quarantines, restrictions on travel, “shelter at home” orders, and restrictions on types of business that may continue to operate or may be reinstated in the future. While some of these measures and restrictions have been lifted and most businesses have begun to reopen, the Company cannot predict when restrictions currently in place may be lifted, or 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. c) Recently Issued Accounting Pronouncements Issued and Adopted New Guidance on Leases In December 2018, the Financial Accounting Standards Board (“FASB”) issued amendments to new guidance issued in February 2016 for the recognition and measurement of all leases . The amendments address certain lessor’s issues associated with: (i) sales taxes and other similar taxes collected from lessees, (ii) certain lessor costs and (iii) recognition of variable payments for contracts with lease and nonlease components. The new guidance on leases issued in February 2016 requires lessees to recognize a right-of-use asset (“ROUA”) and a lease liability for most leases within the scope of the guidance. The Company adopted this standard on January 1, 2021 using the modified retrospective transition approach. Adoption of this standard resulted in a ROUA and a lease liability of $54.5 million and $55.0 million, respectively, which are presented in other assets and other liabilities, respectively, in the Company’s consolidated balance sheet at March 31, 2021. The Company determines if an arrangement is or contains a lease at the inception of the contract. Operating lease ROUAs and liabilities are recognized at the inception date based on the present value of lease payments over the lease term. At lease inception, when the rate implicit in each lease is not readily available, the Company is required to apply an incremental borrowing rate to calculate the ROUA and lease liability. The incremental borrowing rate is based on factors including the lease term and various market rates. Additionally, the Company also considers lease renewal options reasonably certain of exercise for purposes of determining the lease term. The new leasing standard provides several optional expedients in transition. The Company elected certain practical expedients, which allows the Company to not reassess prior conclusions on lease classification, embedded leases and initial indirect costs. The Company elected to exclude short-term leases up to 12 months from the recognition of right-of-use assets and lease liabilities. Additionally, the Company elected to separate lease and non-lease cost and account for them separately. Targeted Improvements to Accounting for Hedging Activities In August 2017, the FASB issued targeted amendments to the guidance for recognition, presentation and disclosure of hedging activities. These targeted amendments expand and refine hedge accounting for both nonfinancial and financial risk components and align the recognition and presentation of the effects of the hedging instrument and the hedged item in the financial statements. The amendments also simplify the application of hedge accounting guidance. In June 2020, the FASB amended the effective date of the new guidance on hedging. This guidance is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years for public business entities. For all other entities, the amendments are effective for fiscal years beginning after December 15, 2020, and interim periods within fiscal years beginning after December 15, 2021. The adoption of this guidance in the first quarter of 2021 did not have an effect on the Company’s consolidated financial statements. d) Subsequent Events The effects of significant subsequent events, if any, have been recognized or disclosed in these unaudited interim consolidated financial statements.

Interest Earning Deposits with

Interest Earning Deposits with Banks	3 Months Ended
	Mar. 31, 2021
Cash and Cash Equivalents [Abstract]
Interest Earning Deposits with Banks	Interest Earning Deposits with Banks At March 31, 2021 and December 31, 2020, interest earning deposits with banks are mainly comprised of deposits with the Federal Reserve of approximately $196 million and $184 million, respectively. At March 31, 2021 and December 31, 2020, the average interest rate on these deposits was approximately 0.10% and 0.31%, respectively. These deposits mature within one year.

Securities

Securities	3 Months Ended
	Mar. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Securities	Securities Amortized cost and approximate fair values of debt securities available for sale are summarized as follows: March 31, 2021 Amortized Gross Unrealized Estimated (in thousands) Gains Losses U.S. government-sponsored enterprise debt securities $ 598,250 $ 15,090 $ (2,637) $ 610,703 Corporate debt securities 338,473 8,903 (1,802) 345,574 U.S. government agency debt securities 214,901 3,810 (2,636) 216,075 U.S. treasury securities 2,504 6 — 2,510 Municipal bonds 14,243 1,096 — 15,339 Total debt securities available for sale (1) $ 1,168,371 $ 28,905 $ (7,075) $ 1,190,201 __________________ (1) As of March 31, 2021, includes residential and commercial mortgage-backed securities with amortized cost of $624.0 million and $134.5 million, respectively, and fair value of $637.5 million and $135.8 million, respectively. December 31, 2020 Amortized Gross Unrealized Estimated (in thousands) Gains Losses U.S. government sponsored enterprise debt securities $ 640,796 $ 21,546 $ (1,007) $ 661,335 Corporate debt securities 292,033 10,787 (1,106) 301,714 U.S. government agency debt securities 202,135 4,458 (2,015) 204,578 U.S. treasury securities 2,505 7 — 2,512 Municipal bonds 50,309 4,635 — 54,944 Total debt securities available for sale (1) $ 1,187,778 $ 41,433 $ (4,128) $ 1,225,083 __________________ (1) As of December 31, 2020, includes residential and commercial mortgage-backed securities with amortized cost of $647.0 million and $123.9 million, respectively, and fair value of $666.7 million and $128.4 million, respectively. The Company had investments in foreign corporate debt securities available for sale of $16.4 million and $17.1 million at March 31, 2021 and December 31, 2020, respectively. At March 31, 2021 and December 31, 2020, the Company had no foreign sovereign or foreign government agency debt securities available for sale. In the three months ended March 31, 2021 and 2020, 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) 2021 2020 Proceeds from sales, redemptions and calls of debt securities available for sale $ 43,854 $ 139,072 Gross realized gains $ 2,947 $ 9,266 Gross realized losses — (23) Realized gains, net on sales of debt investment securities $ 2,947 $ 9,243 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, 2021 Less Than 12 Months 12 Months or More Total (in thousands) Estimated Unrealized Estimated Unrealized Estimated Unrealized U.S. government-sponsored enterprise debt securities $ 86,734 $ (2,413) $ 8,364 $ (224) $ 95,098 $ (2,637) Corporate debt securities 63,290 (1,049) 8,201 (753) 71,491 (1,802) U.S. government agency debt securities 36,577 (792) 80,582 (1,844) 117,159 (2,636) $ 186,601 $ (4,254) $ 97,147 $ (2,821) $ 283,748 $ (7,075) December 31, 2020 Less Than 12 Months 12 Months or More Total (in thousands) Estimated Unrealized Estimated Unrealized Estimated Unrealized U.S. government sponsored enterprise debt securities $ 71,825 $ (661) $ 14,472 $ (346) $ 86,297 $ (1,007) Corporate debt securities 31,777 (1,106) — — 31,777 (1,106) U.S. government agency debt securities 9,254 (62) 80,964 (1,953) 90,218 (2,015) $ 112,856 $ (1,829) $ 95,436 $ (2,299) $ 208,292 $ (4,128) At March 31, 2021 and December 31, 2020, 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 to 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. Unrealized losses on corporate debt securities 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. As of March 31, 2021, the fair value of debt securities held to maturity totaled $104.1 million ($104.7 million - amortized cost), including residential and commercial mortgage-backed securities totaling $73.6 million ($75.4 million - amortized cost) and $30.5 million ($29.3 million - amortized cost), respectively. At March 31, 2021, unrealized gains and losses related to these securities totaled $1.9 million and $2.5 million, respectively. As of December 31, 2020, the fair value of debt securities held to maturity totaled $61.1 million ($58.1 million - amortized cost), including residential and commercial mortgage-backed securities totaling $29.5 million ($28.7 million - amortized cost) and $31.6 million ($29.5 million - amortized cost), respectively. At December 31, 2020, unrealized gains related to these securities totaled $3.0 million. There were no unrealized losses at December 31, 2020. At March 31, 2021 and December 31, 2020, all debt securities held to maturity were issued or guaranteed by the U.S. government or U.S. government-sponsored entities and agencies. Contractual maturities of debt securities at March 31, 2021 are as follows: Available for Sale Held to Maturity (in thousands) Amortized Estimated Amortized Estimated Within 1 year $ 16,480 $ 16,566 $ — $ — After 1 year through 5 years 154,293 158,338 14,916 14,773 After 5 years through 10 years 291,573 299,132 11,353 11,788 After 10 years 706,025 716,165 78,388 77,530 $ 1,168,371 $ 1,190,201 $ 104,657 $ 104,091 Equity securities with readily available fair value not held for trading consist of mutual funds with an original cost of $24.0 million, and fair value of $24.0 million and $24.3 million as of March 31, 2021 and December 31, 2020, respectively. These equity securities have no stated maturities. The Company recognized unrealized losses of $0.4 million and unrealized gains of $0.4 million during the three months ended March 31, 2021 and 2020, respectively, related to the change in fair value of these mutual funds.

Loans

Loans	3 Months Ended
	Mar. 31, 2021
Receivables [Abstract]
Loans	Loans The loan portfolio consists of the following loan classes: (in thousands) March 31, December 31, Real estate loans Commercial real estate Non-owner occupied $ 1,713,967 $ 1,749,839 Multi-family residential 722,783 737,696 Land development and construction loans 351,502 349,800 2,788,252 2,837,335 Single-family residential 625,298 639,569 Owner occupied 940,126 947,127 4,353,676 4,424,031 Commercial loans 1,104,594 1,154,550 Loans to financial institutions and acceptances 16,658 16,636 Consumer loans and overdrafts 278,866 247,120 $ 5,753,794 $ 5,842,337 At March 31, 2021 and December 31, 2020, loans with an outstanding principal balance of $1.4 billion, were pledged as collateral to secure advances from the FHLB. The amounts above include loans under syndication facilities of approximately $443 million and $455 million at March 31, 2021 and December 31, 2020, respectively, which include Shared National Credit facilities and agreements to enter into credit agreements with other lenders (club deals), and other agreements. International loans included above were $133.1 million and $152.9 million at March 31, 2021 and December 31, 2020, respectively. The age analysis of the loan portfolio by class, including nonaccrual loans, as of March 31, 2021 and December 31, 2020 are summarized in the following tables: March 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 $ 1,713,967 $ 1,706,681 $ 5,570 $ 973 $ 743 $ 7,286 $ 8,515 $ 743 Multi-family residential 722,783 713,361 9,422 — — 9,422 11,369 — Land development and construction loans 351,502 351,502 — — — — — — 2,788,252 2,771,544 14,992 973 743 16,708 19,884 743 Single-family residential 625,298 612,490 8,793 611 3,404 12,808 10,814 — Owner occupied 940,126 930,918 435 5,068 3,705 9,208 12,527 — 4,353,676 4,314,952 24,220 6,652 7,852 38,724 43,225 743 Commercial loans 1,104,594 1,062,400 512 2,896 38,786 42,194 45,282 — Loans to financial institutions and acceptances 16,658 16,658 — — — — — — Consumer loans and overdrafts 278,866 278,603 216 20 27 263 270 3 $ 5,753,794 $ 5,672,613 $ 24,948 $ 9,568 $ 46,665 $ 81,181 $ 88,777 $ 746 December 31, 2020 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 $ 1,749,839 $ 1,741,862 $ 1,487 $ — $ 6,490 $ 7,977 $ 8,219 $ — Multi-family residential 737,696 737,696 — — — — 11,340 — Land development and construction loans 349,800 349,800 — — — — — — 2,837,335 2,829,358 1,487 — 6,490 7,977 19,559 — Single-family residential 639,569 631,801 3,143 671 3,954 7,768 10,667 — Owner occupied 947,127 941,566 439 — 5,122 5,561 12,815 220 4,424,031 4,402,725 5,069 671 15,566 21,306 43,041 220 Commercial loans 1,154,550 1,113,469 3,675 1,715 35,691 41,081 44,205 — Loans to financial institutions and acceptances 16,636 16,636 — — — — — — Consumer loans and overdrafts 247,120 246,997 85 6 32 123 233 1 $ 5,842,337 $ 5,779,827 $ 8,829 $ 2,392 $ 51,289 $ 62,510 $ 87,479 $ 221

Allowance for Loan Losses

Allowance for Loan Losses	3 Months Ended
	Mar. 31, 2021
Receivables [Abstract]
Allowance for Loan Losses	Allowance for Loan Losses The analyses by loan segment of the changes in the allowance for loan losses for the three months ended March 31, 2021 and 2020, and its allocation by impairment methodology and the related investment in loans, net as of March 31, 2021 and 2020 are summarized in the following tables: Three Months Ended March 31, 2021 (in thousands) Real Estate Commercial Financial Consumer Total Balances at beginning of the period $ 50,227 $ 48,130 $ 1 $ 12,544 $ 110,902 (Reversal of) provision for loan losses (1,936) 702 — 1,234 — Loans charged-off Domestic — (235) — (431) (666) International — — — — — Recoveries — 605 — 99 704 Balances 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, 2020 (in thousands) Real Estate Commercial Financial Consumer Total Balances at beginning of the period $ 25,040 $ 22,482 $ 42 $ 4,659 $ 52,223 Provision for loan losses 11,390 7,530 — 3,080 22,000 Loans charged-off Domestic — (1,101) — (222) (1,323) International — (34) — (251) (285) Recoveries — 185 — 148 333 Balances at end of the period $ 36,430 $ 29,062 $ 42 $ 7,414 $ 72,948 Allowance for loan losses by impairment methodology: Individually evaluated $ 1,157 $ 4,038 $ — $ 1,525 $ 6,720 Collectively evaluated 35,273 25,024 42 5,889 66,228 $ 36,430 $ 29,062 $ 42 $ 7,414 $ 72,948 Investment in loans, net of unearned income: Individually evaluated $ 1,936 $ 24,232 $ — $ 7,521 $ 33,689 Collectively evaluated 2,931,900 2,104,220 16,576 581,942 5,634,638 $ 2,933,836 $ 2,128,452 $ 16,576 $ 589,463 $ 5,668,327 The following is a summary of the recorded investment amount of loan sales by portfolio segment: Three Months Ended March 31, (in thousands) Real Estate Commercial Financial Consumer Total 2021 $ — $ — $ — $ 1,173 $ 1,173 2020 $ — $ 11,901 $ — $ 1,208 $ 13,109 The following is a summary of impaired loans as of March 31, 2021 and December 31, 2020: March 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 $ 8,523 $ — $ 8,523 $ 8,364 $ 8,513 $ 2,918 Multi-family residential — 11,369 11,369 6,048 11,291 — Land development and construction — — — — — — 8,523 11,369 19,892 14,412 19,804 2,918 Single-family residential 5,421 5,648 11,069 10,392 11,132 907 Owner occupied 632 11,895 12,527 12,939 12,371 212 14,576 28,912 43,488 37,743 43,307 4,037 Commercial loans 34,341 10,946 45,287 47,357 67,251 26,453 Consumer loans and overdrafts 269 — 269 169 267 170 $ 49,186 $ 39,858 $ 89,044 $ 85,269 $ 110,825 $ 30,660 _______________ (1) Average using trailing four quarter balances. December 31, 2020 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 $ 8,219 $ — $ 8,219 $ 6,718 $ 8,227 $ 3,175 Multi-family residential — 11,341 11,341 3,206 11,306 — Land development and construction loans — — — — — — 8,219 11,341 19,560 9,924 19,533 3,175 Single-family residential 5,675 5,250 10,925 9,457 10,990 1,232 Owner occupied 636 12,178 12,814 13,295 12,658 214 14,530 28,769 43,299 32,676 43,181 4,621 Commercial loans 33,110 11,100 44,210 38,534 66,010 25,180 Consumer loans and overdrafts 232 — 232 221 229 147 $ 47,872 $ 39,869 $ 87,741 $ 71,431 $ 109,420 $ 29,948 _______________ (1) Average using trailing four quarter balances. Troubled Debt Restructurings The following table shows information about loans modified in TDRs as of March 31, 2021 and December 31, 2020: As of March 31, 2021 As of December 31, 2020 (in thousands) Number of Contracts Recorded Investment Number of Contracts Recorded Investment Real estate loans Commercial real estate Non-owner occupied 1 $ 1,660 1 $ 1,729 Single-family residential 3 722 2 267 Owner occupied 4 6,641 4 6,784 8 9,023 7 8,780 Commercial loans 10 3,419 11 3,851 Total (1) 18 $ 12,442 18 $ 12,631 ______________ (1) Balances as of March 31, 2021 and December 31, 2020 include a multiple loan relationship with a South Florida customer consisting of CRE, owner occupied and commercial loans totaling $9.8 million and $8.4 million, respectively. This TDR consisted of extending repayment terms and adjusting future periodic payments which resulted in no additional reserves. As of March 31, 2021 and December 31, 2020, this relationship included two and four residential loans totaling $1.5 million, which were not modified. During the second quarter of 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 $0.8 million at March 31, 2021 ($1.0 million at December 31, 2020) are adequate to cover probable losses given current facts and circumstances. During the three months ended March 31, 2021, new TDRs consisted of one single-family residential loan with a recorded investment of $0.5 million as of March 31, 2021. There were no new TDRs during the three months ended March 31, 2020. During the three months ended March 31, 2021, TDR loans that subsequently defaulted within the 12 months of restructuring totaled $2.7 million, including four commercial loans totaling $1.9 million and one owner occupied loan of $0.8 million. During the three months ended March 31, 2021 and 2020, the Company had no charge-offs against the allowance for loan losses as a result of TDR loans. Loans by Credit Quality Indicators Loans by credit quality indicators as of March 31, 2021 and December 31, 2020 are summarized in the following tables: March 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 $ 1,659,501 $ 45,206 $ 5,684 $ 3,576 $ — $ 1,713,967 Multi-family residential 711,414 — 11,369 — — 722,783 Land development and construction loans 351,502 — — — — 351,502 2,722,417 45,206 17,053 3,576 — 2,788,252 Single-family residential 614,484 — 10,814 — — 625,298 Owner occupied 906,454 21,045 12,627 — — 940,126 4,243,355 66,251 40,494 3,576 — 4,353,676 Commercial loans 1,014,319 43,313 21,045 25,917 — 1,104,594 Loans to financial institutions and acceptances 16,658 — — — — 16,658 Consumer loans and overdrafts 278,568 — 298 — — 278,866 $ 5,552,900 $ 109,564 $ 61,837 $ 29,493 $ — $ 5,753,794 December 31, 2020 Credit Risk Rating Nonclassified Classified (in thousands) Pass Special Mention Substandard Doubtful Loss Total Real estate loans Commercial real estate Non-owner occupied $ 1,694,004 $ 46,872 $ 4,994 $ 3,969 $ — $ 1,749,839 Multi-family residential 726,356 — 11,340 — — 737,696 Land development and construction loans 342,636 7,164 — — — 349,800 2,762,996 54,036 16,334 3,969 — 2,837,335 Single-family residential 628,902 — 10,667 — — 639,569 Owner occupied 911,867 22,343 12,917 — — 947,127 4,303,765 76,379 39,918 3,969 — 4,424,031 Commercial loans 1,067,708 42,434 21,152 23,256 — 1,154,550 Loans to financial institutions and acceptances 16,636 — — — — 16,636 Consumer loans and overdrafts 246,882 — 238 — — 247,120 $ 5,634,991 $ 118,813 $ 61,308 $ 27,225 $ — $ 5,842,337

Time Deposits

Time Deposits	3 Months Ended
	Mar. 31, 2021
Time Deposits Disclosure [Abstract]
Time Deposits	Time DepositsTime deposits in denominations of $100,000 or more amounted to approximately $1.1 billion and $1.3 billion at March 31, 2021 and December 31, 2020, respectively. Time deposits in denominations of more than $250,000 amounted to approximately $581 million and $661 million at March 31, 2021 and December 31, 2020, respectively. As of March 31, 2021 and December 31, 2020, brokered time deposits amounted to $494 million.

Advances from the Federal Home

Advances from the Federal Home Loan Bank	3 Months Ended
	Mar. 31, 2021
Advances from Federal Home Loan Banks [Abstract]
Advances from the Federal Home Loan Bank	Advances from the Federal Home Loan Bank At March 31, 2021 and December 31, 2020, the Company had outstanding advances from the FHLB as follows: Outstanding Balance Year of Maturity Interest Interest At March 31, 2021 At December 31, 2020 (in thousands) 2022 0.65% to 0.65% Fixed 50,000 50,000 2023 0.87% to 0.95% Fixed 70,000 70,000 2024 and after (1) 0.62% to 2.42% Fixed 930,000 930,000 $ 1,050,000 $ 1,050,000 _______________

Senior Notes

Senior Notes	3 Months Ended
	Mar. 31, 2021
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, 2021, these Senior Notes amounted to $58.7 million, net of direct unamortized issuance costs of $1.3 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 (“Amerant Florida”).

Junior Subordinated Debentures

Junior Subordinated Debentures Held by Trust Subsidiaries	3 Months Ended
	Mar. 31, 2021
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, 2021 and December 31, 2020: March 31, 2021 December 31, 2020 (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, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	Derivative Instruments At March 31, 2021 and December 31, 2020, the fair values of the Company’s derivative instruments were as follows: March 31, 2021 December 31, 2020 (in thousands) Other Assets Other Liabilities Other Assets Other Liabilities Interest rate swaps designated as cash flow hedges $ — $ 1,404 $ — $ 1,658 Interest rate swaps not designated as hedging instruments: Customers 21,297 2,292 39,715 — Third party broker 2,292 21,297 — 39,715 23,589 23,589 39,715 39,715 Interest rate caps not designated as hedging instruments: Customers — 125 — 58 Third party broker 7 — 6 — 7 125 6 58 $ 23,596 $ 25,118 $ 39,721 $ 41,431 Derivatives Designated as Hedging Instruments The Company enters into interest rate swap contracts which the Company designates and qualify 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, 2021 and December 31, 2020, the Company had five interest rate swap contracts with notional amounts totaling $64.2 million that 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, 2021 and December 31, 2020 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 the first quarter of 2021, we recognized unrealized losses of $0.2 million in connection with these interest rate swap contracts (unrealized gains of $0.1 million in the first quarter of 2020), which 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, 2021, the estimated net unrealized losses in accumulated other comprehensive income expected to be reclassified into expense in the next twelve months amounted to $0.6 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 and $0.4 million as a reduction of interest expense on FHLB advances in the first quarters of 2021 and 2020, respectively, as a result of this amortization. Derivatives Not Designated as Hedging Instruments Interest Rate Swaps At March 31, 2021 and December 31, 2020, the Company had 79 and 76 interest rate swap contracts with customers, respectively, with a total notional amount of $480.6 million and $475.6 million, respectively. These instruments involve the payment of variable-rate amounts in exchange for the Company receiving fixed-rate amounts over the life of the contract. In addition, at March 31, 2021 and December 31, 2020, the Company had 79 and 76 interest rate swap mirror contracts, respectively, with third party brokers with similar terms. In 2019, the Company entered 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, 2021 and December 31, 2020, 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, 2021 and December 31, 2020, the fair value of swap participation agreements was not significant. Interest Rate Caps At March 31, 2021 and December 31, 2020, the Company had 22 and 23 interest rate cap contracts with customers with a total notional amount of $452.4 million and $486.5 million, respectively. These instruments involve the Company making payments if an interest rate exceeds the agreed strike price. In addition, at March 31, 2021 and December 31, 2020, the Company had 7 and 8 interest rate cap mirror contracts, respectively, with various third party brokers with total notional amounts of $118.1 million and $152.2 million, respectively. Credit Risk-Related Contingent Features Some agreements may require the posting of pledged securities when the valuation of the interest rate swap falls below a certain amount. At March 31, 2021 and December 31, 2020, the derivative contracts subject to credit-risk related contingent features was as follows: (in thousands) March 31, 2021 December 31, 2020 Fair value of derivative contracts $ 24,993 $ 41,373 Securities Pledged 31,586 52,857 Liquidity exposure $ (6,593) $ (11,484)

Leases

Leases	3 Months Ended
	Mar. 31, 2021
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 45 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 $0.3 million in variable lease payments during the three months ended March 31, 2021, 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, 2021 were as follows: (in thousands) March 31, 2021 Lease cost Operating lease cost $ 1,909 Short-term lease cost 155 Variable lease cost 333 Sublease income (108) Total lease cost $ 2,289 As of March 31, 2021, a right-of-use asset of $54.5 million and an operating lease liability of $55.0 million were included in “Other assets” and “Other liabilities”, respectively, on the unaudited consolidated balance sheets. The table provides supplemental information related to leases as of and for the three months ended March 31, 2021: (in thousands, except weighted average data) Cash paid for amounts included in the measurement of operating lease liabilities 1,765 Operating lease right-of-use asset obtained in exchange for operating lease liability 1,044 Weighted average remaining lease term for operating leases 21.0 years Weighted average discount rate for operating leases 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, 2021: (in thousands) Twelve Months Ended March 31, 2021 $ 7,113 2022 6,335 2023 4,504 2024 4,483 2025 4,145 Thereafter 77,444 Total minimum payments required 104,024 Less: implied interest (49,020) Total lease obligations $ 55,004

Stock-based Incentive Compensat

Stock-based Incentive Compensation Plan	3 Months Ended
	Mar. 31, 2021
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 11 to the Company’s audited consolidated financial statements in the 2020 annual report on Form 10-K for more information on the 2018 Equity Plan and stock-based compensation awards for the year ended December 31, 2020, including restricted stocks and restricted stock units (“RSUs”). On February 11, 2021, the Company adopted a new form of performance based restricted stock unit agreement (“PSU Agreement”), and a new form of restricted stock unit agreement (the “RSU Agreement”) that will be used in connection with a Long-Term Incentive Plan (the “LTI Plan”), a sub-plan under the 2018 Equity Plan. See detailed information below. Restricted Stock Awards The following table shows the activity of restricted stock awards during the three months ended March 31, 2021: Number of restricted shares Weighted-average grant date fair value Non-vested shares, beginning of year 210,423 $ 13.55 Granted 196,015 16.65 Vested (2,630) 14.91 Forfeited — — Non-vested shares at March 31, 2021 403,808 $ 15.05 On February 16, 2021, the Company granted 194,492 shares of restricted Class A common stock to certain of its employees under the LTI Plan. These shares of restricted stock will vest in three On March 2, 2021, the Company granted 1,523 shares of restricted Class A common stock to a new employee.These shares of restricted stock will vest in three The Company recorded compensation expense related to the restricted stock awards of $0.5 million and $0.3 million during the three months ended March 31, 2021 and 2020, respectively. The total unamortized deferred compensation expense of $3.7 million for all unvested restricted stock outstanding at March 31, 2021 will be recognized over a weighted average period of 1.7 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, 2021: 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 38,327 $ 13.45 20,766 $ 13.45 59,093 $ 13.72 — — Granted 120,513 16.65 — — 120,513 16.65 120,513 13.82 Vested — — — — — — — — Forfeited — — — — — — — — Non-vested, end of year 158,840 $ 15.88 20,766 $ 13.45 179,606 $ 15.69 120,513 $ 13.82 On February 16, 2021, in connection with the LTI Plan, the Company entered into five separate PSU Agreements with five executives which granted awards consisting of the opportunity to earn, in the aggregate, a target of 58,136 performance based restricted stock units, or PSUs. These PSUs generally vest at the end of a three On February 16, 2021, in connection with the LTI Plan, the Company entered into five separate RSU Agreements with five executive which granted, in the aggregate, 58,136 RSUs that will vest in three three On February 16, 2021, in connection with a sign-on grant, the Company entered into a PSU Agreement with one executive which granted an award consisting of the opportunity to earn a target of 62,377 performance based restricted stock units, or PSUs. These PSUs generally vest at the end of a three On February 16, 2021, in connection with a sign-on grant, the Company entered into a RSU Agreement with one executive which granted 62,377 RSUs that will vest in three three The Company recorded compensation expense related to RSUs and PSUs of $0.4 million and $0.1 million during the three months ended March 31, 2021 and 2020, respectively. The total unamortized deferred compensation expense of $3.6 million for all unvested stock-settled RSUs and PSUs outstanding at March 31, 2021 will be recognized over a weighted average period of 2.3 years.

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2021
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, 2021 and 2020 were 20.15% and 20.83%, respectively. Effective tax rates differ from the statutory rates mainly due to the impact of forecasted permanent non-taxable interest and other income, and the effect of corporate state taxes.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income (“AOCI”)	3 Months Ended
	Mar. 31, 2021
Equity [Abstract]
Accumulated Other Comprehensive Income (“AOCI”)	Accumulated Other Comprehensive Income (“AOCI”): The components of AOCI are summarized as follows using applicable blended average federal and state tax rates for each period: March 31, 2021 December 31, 2020 (in thousands) Before Tax Tax Net of Tax Before Tax Tax Net of Tax Net unrealized holding gains on debt securities available for sale $ 21,830 $ (5,337) $ 16,493 $ 37,305 $ (9,120) $ 28,185 Net unrealized holding gains on interest rate swaps designated as cash flow hedges 4,521 (1,105) 3,416 4,605 (1,126) $ 3,479 Total AOCI $ 26,351 $ (6,442) $ 19,909 $ 41,910 $ (10,246) $ 31,664 The components of other comprehensive loss/income for the periods presented is summarized as follows: Three Months Ended March 31, 2021 2020 (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: Change in fair value arising during the period $ (12,528) $ 3,062 $ (9,466) $ 35,342 $ (8,640) $ 26,702 Reclassification adjustment for net gains included in net income (2,947) 721 (2,226) (9,243) 2,260 (6,983) (15,475) 3,783 (11,692) 26,099 (6,380) 19,719 Net unrealized holding gains (losses) on interest rate swaps designated as cash flow hedges: Change in fair value arising during the period 47 (11) 36 (2,004) 490 (1,514) Reclassification adjustment for net interest income included in net income (131) 32 (99) (426) 104 (322) (84) 21 (63) (2,430) 594 (1,836) Total other comprehensive (loss) income $ (15,559) $ 3,804 $ (11,755) $ 23,669 $ (5,786) $ 17,883

Stockholders_ Equity

Stockholders’ Equity	3 Months Ended
	Mar. 31, 2021
Equity [Abstract]
Stockholders’ Equity	Stockholders’ Equity a) Class A Common Stock Shares of the Company’s Class A common stock issued and outstanding as of March 31, 2021 and December 31, 2020 were 29,001,646 and 28,806,344, respectively. b) Class B Common Stock and Treasury Stock Shares of the Company’s Class B common stock issued and outstanding as of March 31, 2021 and December 31, 2020 were 8,920,315 and 9,036,352, respectively. As of March 31, 2021 and December 31, 2020, the Company had no shares of Class B common stock held as treasury stock. On March 10, 2021, the Company’s Board of Directors approved a stock repurchase program which provides for the potential repurchase of up to $40 million of shares of the Company’s Class B common stock (the “2021 Stock Repurchase Program”). Under the 2021 Stock Repurchase Program, the Company may repurchase shares of Class B common stock through open market purchases, by block purchase, in privately-negotiated transactions, or otherwise in compliance with Rule 10b-18 under the Exchange Act. The extent to which the Company repurchases its shares of Class B common stock and the timing of such purchases 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 2021 Stock Repurchase Program does not obligate the Company to repurchase any particular amount of shares of Class B common stock, and may be suspended or discontinued at any time without notice.

Contingencies

Contingencies	3 Months Ended
	Mar. 31, 2021
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, 2021 are generally short-term and are as follows: (in thousands) Approximate Commitments to extend credit $ 761,378 Standby letters of credit 9,644 Commercial letters of credit 701 $ 771,723

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2021
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, 2021 (in thousands) Quoted Third-Party Internal Total Assets Debt securities available for sale U.S. government-sponsored enterprise debt securities $ — $ 610,703 $ — $ 610,703 Corporate debt securities — 345,574 — 345,574 U.S. government agency debt securities — 216,075 — 216,075 Municipal bonds — 15,339 — 15,339 U.S treasury securities — 2,510 — 2,510 — 1,190,201 — 1,190,201 Equity securities with readily determinable fair values not held for trading — 23,965 — 23,965 Bank owned life insurance — 218,903 — 218,903 Derivative instruments — 23,596 — 23,596 $ — $ 1,456,665 $ — $ 1,456,665 Liabilities Derivative instruments $ — $ 25,118 $ — $ 25,118 December 31, 2020 (in thousands) Quoted Third-Party Internal Total Assets Debt securities available for sale U.S. government-sponsored enterprise debt securities $ — $ 661,335 $ — $ 661,335 Corporate debt securities — 301,714 — 301,714 U.S. government agency debt securities — 204,578 — 204,578 U.S treasury securities — 2,512 — 2,512 Municipal bonds — 54,944 — 54,944 — 1,225,083 — 1,225,083 Equity securities with readily determinable fair values not held for trading — 24,342 — 24,342 Bank owned life insurance — 217,547 — 217,547 Derivative instruments — 39,721 — 39,721 $ — $ 1,506,693 $ — $ 1,506,693 Liabilities Derivative instruments $ — $ 41,431 $ — $ 41,431 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, 2021 and December 31, 2020: March 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 $ 45,956 $ — $ — $ 45,956 $ 19,838 Loans held for sale 1,044 1,044 — — — 47,000 1,044 — 45,956 19,838 December 31, 2020 (in thousands) Carrying Amount Quoted Significant Significant Total Impairments Description Loans held for investment measured for impairments using the fair value of the collateral $ 50,199 $ — $ — $ 50,199 $ 19,843 Loans held for sale Loans held for sale are carried at the lower of cost or estimated fair value. The fair values of loans held for sale are based on commitments on hand from investors within the secondary market for loans with similar characteristics. As such, the fair value adjustment for loans held for sale is classified as Level 1. 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. There were no other significant assets or liabilities measured at fair value on a nonrecurring basis at March 31, 2021 and December 31, 2020. Fair Value of Financial Instruments The estimated fair value of financial instruments where fair value differs from carrying value are as follows: March 31, 2021 December 31, 2020 (in thousands) Carrying Estimated Carrying Estimated Financial assets: Loans $ 2,804,208 $ 2,725,232 $ 2,884,550 $ 2,801,279 Financial liabilities: Time deposits 1,387,791 1,405,972 1,547,396 1,569,897 Advances from the FHLB 1,050,000 1,068,572 1,050,000 1,078,786 Senior notes 58,656 61,606 58,577 61,528 Junior subordinated debentures 64,178 52,590 64,178 55,912

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2021
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 per share data) 2021 2020 Numerator: Net income available to common stockholders $ 14,459 $ 3,382 Denominator: ` Basic weighted average shares outstanding 37,618 42,185 Dilutive effect of share-based compensation awards 228 348 Diluted weighted average shares outstanding 37,846 42,533 Basic earnings per common share $ 0.38 $ 0.08 Diluted earnings per common share $ 0.38 $ 0.08

Business, Basis of Presentati_2

Business, Basis of Presentation and Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
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 SEC 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.
Estimates	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. The COVID-19 pandemic has severely restricted the level of economic activity in the U.S. and around the world since March 2020. Several states and cities across the U.S., including the States of Florida, New York and Texas and cities where we have banking centers, LPOs and where our principal place of business is located, have also implemented quarantines, restrictions on travel, “shelter at home” orders, and restrictions on types of business that may continue to operate or may be reinstated in the future. While some of these measures and restrictions have been lifted and most businesses have begun to reopen, the Company cannot predict when restrictions currently in place may be lifted, or 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.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements Issued and Adopted New Guidance on Leases In December 2018, the Financial Accounting Standards Board (“FASB”) issued amendments to new guidance issued in February 2016 for the recognition and measurement of all leases . The amendments address certain lessor’s issues associated with: (i) sales taxes and other similar taxes collected from lessees, (ii) certain lessor costs and (iii) recognition of variable payments for contracts with lease and nonlease components. The new guidance on leases issued in February 2016 requires lessees to recognize a right-of-use asset (“ROUA”) and a lease liability for most leases within the scope of the guidance. The Company adopted this standard on January 1, 2021 using the modified retrospective transition approach. Adoption of this standard resulted in a ROUA and a lease liability of $54.5 million and $55.0 million, respectively, which are presented in other assets and other liabilities, respectively, in the Company’s consolidated balance sheet at March 31, 2021. The Company determines if an arrangement is or contains a lease at the inception of the contract. Operating lease ROUAs and liabilities are recognized at the inception date based on the present value of lease payments over the lease term. At lease inception, when the rate implicit in each lease is not readily available, the Company is required to apply an incremental borrowing rate to calculate the ROUA and lease liability. The incremental borrowing rate is based on factors including the lease term and various market rates. Additionally, the Company also considers lease renewal options reasonably certain of exercise for purposes of determining the lease term. The new leasing standard provides several optional expedients in transition. The Company elected certain practical expedients, which allows the Company to not reassess prior conclusions on lease classification, embedded leases and initial indirect costs. The Company elected to exclude short-term leases up to 12 months from the recognition of right-of-use assets and lease liabilities. Additionally, the Company elected to separate lease and non-lease cost and account for them separately. Targeted Improvements to Accounting for Hedging Activities In August 2017, the FASB issued targeted amendments to the guidance for recognition, presentation and disclosure of hedging activities. These targeted amendments expand and refine hedge accounting for both nonfinancial and financial risk components and align the recognition and presentation of the effects of the hedging instrument and the hedged item in the financial statements. The amendments also simplify the application of hedge accounting guidance. In June 2020, the FASB amended the effective date of the new guidance on hedging. This guidance is effective for fiscal years beginning after December 15, 2018, and interim periods within those fiscal years for public business entities. For all other entities, the amendments are effective for fiscal years beginning after December 15, 2020, and interim periods within fiscal years beginning after December 15, 2021. The adoption of this guidance in the first quarter of 2021 did not have an effect on the Company’s consolidated financial statements.
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, 2021
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, 2021 Amortized Gross Unrealized Estimated (in thousands) Gains Losses U.S. government-sponsored enterprise debt securities $ 598,250 $ 15,090 $ (2,637) $ 610,703 Corporate debt securities 338,473 8,903 (1,802) 345,574 U.S. government agency debt securities 214,901 3,810 (2,636) 216,075 U.S. treasury securities 2,504 6 — 2,510 Municipal bonds 14,243 1,096 — 15,339 Total debt securities available for sale (1) $ 1,168,371 $ 28,905 $ (7,075) $ 1,190,201 __________________ (1) As of March 31, 2021, includes residential and commercial mortgage-backed securities with amortized cost of $624.0 million and $134.5 million, respectively, and fair value of $637.5 million and $135.8 million, respectively. December 31, 2020 Amortized Gross Unrealized Estimated (in thousands) Gains Losses U.S. government sponsored enterprise debt securities $ 640,796 $ 21,546 $ (1,007) $ 661,335 Corporate debt securities 292,033 10,787 (1,106) 301,714 U.S. government agency debt securities 202,135 4,458 (2,015) 204,578 U.S. treasury securities 2,505 7 — 2,512 Municipal bonds 50,309 4,635 — 54,944 Total debt securities available for sale (1) $ 1,187,778 $ 41,433 $ (4,128) $ 1,225,083 __________________ (1) As of December 31, 2020, includes residential and commercial mortgage-backed securities with amortized cost of $647.0 million and $123.9 million, respectively, and fair value of $666.7 million and $128.4 million, respectively.
Schedule of realized gain (loss)	In the three months ended March 31, 2021 and 2020, 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) 2021 2020 Proceeds from sales, redemptions and calls of debt securities available for sale $ 43,854 $ 139,072 Gross realized gains $ 2,947 $ 9,266 Gross realized losses — (23) Realized gains, net on sales of debt investment securities $ 2,947 $ 9,243
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, 2021 Less Than 12 Months 12 Months or More Total (in thousands) Estimated Unrealized Estimated Unrealized Estimated Unrealized U.S. government-sponsored enterprise debt securities $ 86,734 $ (2,413) $ 8,364 $ (224) $ 95,098 $ (2,637) Corporate debt securities 63,290 (1,049) 8,201 (753) 71,491 (1,802) U.S. government agency debt securities 36,577 (792) 80,582 (1,844) 117,159 (2,636) $ 186,601 $ (4,254) $ 97,147 $ (2,821) $ 283,748 $ (7,075) December 31, 2020 Less Than 12 Months 12 Months or More Total (in thousands) Estimated Unrealized Estimated Unrealized Estimated Unrealized U.S. government sponsored enterprise debt securities $ 71,825 $ (661) $ 14,472 $ (346) $ 86,297 $ (1,007) Corporate debt securities 31,777 (1,106) — — 31,777 (1,106) U.S. government agency debt securities 9,254 (62) 80,964 (1,953) 90,218 (2,015) $ 112,856 $ (1,829) $ 95,436 $ (2,299) $ 208,292 $ (4,128)
Schedule of contractual maturities of securities	Contractual maturities of debt securities at March 31, 2021 are as follows: Available for Sale Held to Maturity (in thousands) Amortized Estimated Amortized Estimated Within 1 year $ 16,480 $ 16,566 $ — $ — After 1 year through 5 years 154,293 158,338 14,916 14,773 After 5 years through 10 years 291,573 299,132 11,353 11,788 After 10 years 706,025 716,165 78,388 77,530 $ 1,168,371 $ 1,190,201 $ 104,657 $ 104,091

Loans (Tables)

Loans (Tables)	3 Months Ended
	Mar. 31, 2021
Receivables [Abstract]
Schedule of loan portfolio by classes and countries	The loan portfolio consists of the following loan classes: (in thousands) March 31, December 31, Real estate loans Commercial real estate Non-owner occupied $ 1,713,967 $ 1,749,839 Multi-family residential 722,783 737,696 Land development and construction loans 351,502 349,800 2,788,252 2,837,335 Single-family residential 625,298 639,569 Owner occupied 940,126 947,127 4,353,676 4,424,031 Commercial loans 1,104,594 1,154,550 Loans to financial institutions and acceptances 16,658 16,636 Consumer loans and overdrafts 278,866 247,120 $ 5,753,794 $ 5,842,337
Schedule of loan portfolio delinquencies	The age analysis of the loan portfolio by class, including nonaccrual loans, as of March 31, 2021 and December 31, 2020 are summarized in the following tables: March 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 $ 1,713,967 $ 1,706,681 $ 5,570 $ 973 $ 743 $ 7,286 $ 8,515 $ 743 Multi-family residential 722,783 713,361 9,422 — — 9,422 11,369 — Land development and construction loans 351,502 351,502 — — — — — — 2,788,252 2,771,544 14,992 973 743 16,708 19,884 743 Single-family residential 625,298 612,490 8,793 611 3,404 12,808 10,814 — Owner occupied 940,126 930,918 435 5,068 3,705 9,208 12,527 — 4,353,676 4,314,952 24,220 6,652 7,852 38,724 43,225 743 Commercial loans 1,104,594 1,062,400 512 2,896 38,786 42,194 45,282 — Loans to financial institutions and acceptances 16,658 16,658 — — — — — — Consumer loans and overdrafts 278,866 278,603 216 20 27 263 270 3 $ 5,753,794 $ 5,672,613 $ 24,948 $ 9,568 $ 46,665 $ 81,181 $ 88,777 $ 746 December 31, 2020 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 $ 1,749,839 $ 1,741,862 $ 1,487 $ — $ 6,490 $ 7,977 $ 8,219 $ — Multi-family residential 737,696 737,696 — — — — 11,340 — Land development and construction loans 349,800 349,800 — — — — — — 2,837,335 2,829,358 1,487 — 6,490 7,977 19,559 — Single-family residential 639,569 631,801 3,143 671 3,954 7,768 10,667 — Owner occupied 947,127 941,566 439 — 5,122 5,561 12,815 220 4,424,031 4,402,725 5,069 671 15,566 21,306 43,041 220 Commercial loans 1,154,550 1,113,469 3,675 1,715 35,691 41,081 44,205 — Loans to financial institutions and acceptances 16,636 16,636 — — — — — — Consumer loans and overdrafts 247,120 246,997 85 6 32 123 233 1 $ 5,842,337 $ 5,779,827 $ 8,829 $ 2,392 $ 51,289 $ 62,510 $ 87,479 $ 221

Allowance for Loan Losses (Tabl

Allowance for Loan Losses (Tables)	3 Months Ended
	Mar. 31, 2021
Receivables [Abstract]
Schedule of allowance for loan losses	The analyses by loan segment of the changes in the allowance for loan losses for the three months ended March 31, 2021 and 2020, and its allocation by impairment methodology and the related investment in loans, net as of March 31, 2021 and 2020 are summarized in the following tables: Three Months Ended March 31, 2021 (in thousands) Real Estate Commercial Financial Consumer Total Balances at beginning of the period $ 50,227 $ 48,130 $ 1 $ 12,544 $ 110,902 (Reversal of) provision for loan losses (1,936) 702 — 1,234 — Loans charged-off Domestic — (235) — (431) (666) International — — — — — Recoveries — 605 — 99 704 Balances 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, 2020 (in thousands) Real Estate Commercial Financial Consumer Total Balances at beginning of the period $ 25,040 $ 22,482 $ 42 $ 4,659 $ 52,223 Provision for loan losses 11,390 7,530 — 3,080 22,000 Loans charged-off Domestic — (1,101) — (222) (1,323) International — (34) — (251) (285) Recoveries — 185 — 148 333 Balances at end of the period $ 36,430 $ 29,062 $ 42 $ 7,414 $ 72,948 Allowance for loan losses by impairment methodology: Individually evaluated $ 1,157 $ 4,038 $ — $ 1,525 $ 6,720 Collectively evaluated 35,273 25,024 42 5,889 66,228 $ 36,430 $ 29,062 $ 42 $ 7,414 $ 72,948 Investment in loans, net of unearned income: Individually evaluated $ 1,936 $ 24,232 $ — $ 7,521 $ 33,689 Collectively evaluated 2,931,900 2,104,220 16,576 581,942 5,634,638 $ 2,933,836 $ 2,128,452 $ 16,576 $ 589,463 $ 5,668,327 The following is a summary of the recorded investment amount of loan sales by portfolio segment: Three Months Ended March 31, (in thousands) Real Estate Commercial Financial Consumer Total 2021 $ — $ — $ — $ 1,173 $ 1,173 2020 $ — $ 11,901 $ — $ 1,208 $ 13,109
Schedule of impaired loans	The following is a summary of impaired loans as of March 31, 2021 and December 31, 2020: March 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 $ 8,523 $ — $ 8,523 $ 8,364 $ 8,513 $ 2,918 Multi-family residential — 11,369 11,369 6,048 11,291 — Land development and construction — — — — — — 8,523 11,369 19,892 14,412 19,804 2,918 Single-family residential 5,421 5,648 11,069 10,392 11,132 907 Owner occupied 632 11,895 12,527 12,939 12,371 212 14,576 28,912 43,488 37,743 43,307 4,037 Commercial loans 34,341 10,946 45,287 47,357 67,251 26,453 Consumer loans and overdrafts 269 — 269 169 267 170 $ 49,186 $ 39,858 $ 89,044 $ 85,269 $ 110,825 $ 30,660 _______________ (1) Average using trailing four quarter balances. December 31, 2020 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 $ 8,219 $ — $ 8,219 $ 6,718 $ 8,227 $ 3,175 Multi-family residential — 11,341 11,341 3,206 11,306 — Land development and construction loans — — — — — — 8,219 11,341 19,560 9,924 19,533 3,175 Single-family residential 5,675 5,250 10,925 9,457 10,990 1,232 Owner occupied 636 12,178 12,814 13,295 12,658 214 14,530 28,769 43,299 32,676 43,181 4,621 Commercial loans 33,110 11,100 44,210 38,534 66,010 25,180 Consumer loans and overdrafts 232 — 232 221 229 147 $ 47,872 $ 39,869 $ 87,741 $ 71,431 $ 109,420 $ 29,948 _______________ (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, 2021 and December 31, 2020: As of March 31, 2021 As of December 31, 2020 (in thousands) Number of Contracts Recorded Investment Number of Contracts Recorded Investment Real estate loans Commercial real estate Non-owner occupied 1 $ 1,660 1 $ 1,729 Single-family residential 3 722 2 267 Owner occupied 4 6,641 4 6,784 8 9,023 7 8,780 Commercial loans 10 3,419 11 3,851 Total (1) 18 $ 12,442 18 $ 12,631 ______________ (1) Balances as of March 31, 2021 and December 31, 2020 include a multiple loan relationship with a South Florida customer consisting of CRE, owner occupied and commercial loans totaling $9.8 million and $8.4 million, respectively. This TDR consisted of extending repayment terms and adjusting future periodic payments which resulted in no additional reserves. As of March 31, 2021 and December 31, 2020, this relationship included two and four residential loans totaling $1.5 million, which were not modified. During the second quarter of 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 $0.8 million at March 31, 2021 ($1.0 million at December 31, 2020) are adequate to cover probable losses given current facts and circumstances.
Schedule of credit quality indicators	Loans by credit quality indicators as of March 31, 2021 and December 31, 2020 are summarized in the following tables: March 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 $ 1,659,501 $ 45,206 $ 5,684 $ 3,576 $ — $ 1,713,967 Multi-family residential 711,414 — 11,369 — — 722,783 Land development and construction loans 351,502 — — — — 351,502 2,722,417 45,206 17,053 3,576 — 2,788,252 Single-family residential 614,484 — 10,814 — — 625,298 Owner occupied 906,454 21,045 12,627 — — 940,126 4,243,355 66,251 40,494 3,576 — 4,353,676 Commercial loans 1,014,319 43,313 21,045 25,917 — 1,104,594 Loans to financial institutions and acceptances 16,658 — — — — 16,658 Consumer loans and overdrafts 278,568 — 298 — — 278,866 $ 5,552,900 $ 109,564 $ 61,837 $ 29,493 $ — $ 5,753,794 December 31, 2020 Credit Risk Rating Nonclassified Classified (in thousands) Pass Special Mention Substandard Doubtful Loss Total Real estate loans Commercial real estate Non-owner occupied $ 1,694,004 $ 46,872 $ 4,994 $ 3,969 $ — $ 1,749,839 Multi-family residential 726,356 — 11,340 — — 737,696 Land development and construction loans 342,636 7,164 — — — 349,800 2,762,996 54,036 16,334 3,969 — 2,837,335 Single-family residential 628,902 — 10,667 — — 639,569 Owner occupied 911,867 22,343 12,917 — — 947,127 4,303,765 76,379 39,918 3,969 — 4,424,031 Commercial loans 1,067,708 42,434 21,152 23,256 — 1,154,550 Loans to financial institutions and acceptances 16,636 — — — — 16,636 Consumer loans and overdrafts 246,882 — 238 — — 247,120 $ 5,634,991 $ 118,813 $ 61,308 $ 27,225 $ — $ 5,842,337

Advances from the Federal Hom_2

Advances from the Federal Home Loan Bank (Tables)	3 Months Ended
	Mar. 31, 2021
Advances from Federal Home Loan Banks [Abstract]
Schedule of outstanding advances from the FHLB	At March 31, 2021 and December 31, 2020, the Company had outstanding advances from the FHLB as follows: Outstanding Balance Year of Maturity Interest Interest At March 31, 2021 At December 31, 2020 (in thousands) 2022 0.65% to 0.65% Fixed 50,000 50,000 2023 0.87% to 0.95% Fixed 70,000 70,000 2024 and after (1) 0.62% to 2.42% Fixed 930,000 930,000 $ 1,050,000 $ 1,050,000 _______________

Junior Subordinated Debenture_2

Junior Subordinated Debentures Held by Trust Subsidiaries (Tables)	3 Months Ended
	Mar. 31, 2021
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, 2021 and December 31, 2020: March 31, 2021 December 31, 2020 (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, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments	At March 31, 2021 and December 31, 2020, the fair values of the Company’s derivative instruments were as follows: March 31, 2021 December 31, 2020 (in thousands) Other Assets Other Liabilities Other Assets Other Liabilities Interest rate swaps designated as cash flow hedges $ — $ 1,404 $ — $ 1,658 Interest rate swaps not designated as hedging instruments: Customers 21,297 2,292 39,715 — Third party broker 2,292 21,297 — 39,715 23,589 23,589 39,715 39,715 Interest rate caps not designated as hedging instruments: Customers — 125 — 58 Third party broker 7 — 6 — 7 125 6 58 $ 23,596 $ 25,118 $ 39,721 $ 41,431
Schedule of Derivative Contracts Subject to Credit-Risk Related Contingent Features	At March 31, 2021 and December 31, 2020, the derivative contracts subject to credit-risk related contingent features was as follows: (in thousands) March 31, 2021 December 31, 2020 Fair value of derivative contracts $ 24,993 $ 41,373 Securities Pledged 31,586 52,857 Liquidity exposure $ (6,593) $ (11,484)

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2021
Leases [Abstract]
Schedule of Lease Cost	Lease costs for the three months ended March 31, 2021 were as follows: (in thousands) March 31, 2021 Lease cost Operating lease cost $ 1,909 Short-term lease cost 155 Variable lease cost 333 Sublease income (108) Total lease cost $ 2,289 (in thousands, except weighted average data) Cash paid for amounts included in the measurement of operating lease liabilities 1,765 Operating lease right-of-use asset obtained in exchange for operating lease liability 1,044 Weighted average remaining lease term for operating leases 21.0 years Weighted average discount rate for operating leases 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, 2021: (in thousands) Twelve Months Ended March 31, 2021 $ 7,113 2022 6,335 2023 4,504 2024 4,483 2025 4,145 Thereafter 77,444 Total minimum payments required 104,024 Less: implied interest (49,020) Total lease obligations $ 55,004

Stock-based Incentive Compens_2

Stock-based Incentive Compensation Plan (Tables)	3 Months Ended
	Mar. 31, 2021
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, 2021: Number of restricted shares Weighted-average grant date fair value Non-vested shares, beginning of year 210,423 $ 13.55 Granted 196,015 16.65 Vested (2,630) 14.91 Forfeited — — Non-vested shares at March 31, 2021 403,808 $ 15.05
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, 2021: 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 38,327 $ 13.45 20,766 $ 13.45 59,093 $ 13.72 — — Granted 120,513 16.65 — — 120,513 16.65 120,513 13.82 Vested — — — — — — — — Forfeited — — — — — — — — Non-vested, end of year 158,840 $ 15.88 20,766 $ 13.45 179,606 $ 15.69 120,513 $ 13.82

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (“AOCI”) (Tables)	3 Months Ended
	Mar. 31, 2021
Equity [Abstract]
Components of AOCI	The components of AOCI are summarized as follows using applicable blended average federal and state tax rates for each period: March 31, 2021 December 31, 2020 (in thousands) Before Tax Tax Net of Tax Before Tax Tax Net of Tax Net unrealized holding gains on debt securities available for sale $ 21,830 $ (5,337) $ 16,493 $ 37,305 $ (9,120) $ 28,185 Net unrealized holding gains on interest rate swaps designated as cash flow hedges 4,521 (1,105) 3,416 4,605 (1,126) $ 3,479 Total AOCI $ 26,351 $ (6,442) $ 19,909 $ 41,910 $ (10,246) $ 31,664
Components of Other Comprehensive Income	The components of other comprehensive loss/income for the periods presented is summarized as follows: Three Months Ended March 31, 2021 2020 (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: Change in fair value arising during the period $ (12,528) $ 3,062 $ (9,466) $ 35,342 $ (8,640) $ 26,702 Reclassification adjustment for net gains included in net income (2,947) 721 (2,226) (9,243) 2,260 (6,983) (15,475) 3,783 (11,692) 26,099 (6,380) 19,719 Net unrealized holding gains (losses) on interest rate swaps designated as cash flow hedges: Change in fair value arising during the period 47 (11) 36 (2,004) 490 (1,514) Reclassification adjustment for net interest income included in net income (131) 32 (99) (426) 104 (322) (84) 21 (63) (2,430) 594 (1,836) Total other comprehensive (loss) income $ (15,559) $ 3,804 $ (11,755) $ 23,669 $ (5,786) $ 17,883

Contingencies (Tables)

Contingencies (Tables)	3 Months Ended
	Mar. 31, 2021
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, 2021 are generally short-term and are as follows: (in thousands) Approximate Commitments to extend credit $ 761,378 Standby letters of credit 9,644 Commercial letters of credit 701 $ 771,723

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2021
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, 2021 (in thousands) Quoted Third-Party Internal Total Assets Debt securities available for sale U.S. government-sponsored enterprise debt securities $ — $ 610,703 $ — $ 610,703 Corporate debt securities — 345,574 — 345,574 U.S. government agency debt securities — 216,075 — 216,075 Municipal bonds — 15,339 — 15,339 U.S treasury securities — 2,510 — 2,510 — 1,190,201 — 1,190,201 Equity securities with readily determinable fair values not held for trading — 23,965 — 23,965 Bank owned life insurance — 218,903 — 218,903 Derivative instruments — 23,596 — 23,596 $ — $ 1,456,665 $ — $ 1,456,665 Liabilities Derivative instruments $ — $ 25,118 $ — $ 25,118 December 31, 2020 (in thousands) Quoted Third-Party Internal Total Assets Debt securities available for sale U.S. government-sponsored enterprise debt securities $ — $ 661,335 $ — $ 661,335 Corporate debt securities — 301,714 — 301,714 U.S. government agency debt securities — 204,578 — 204,578 U.S treasury securities — 2,512 — 2,512 Municipal bonds — 54,944 — 54,944 — 1,225,083 — 1,225,083 Equity securities with readily determinable fair values not held for trading — 24,342 — 24,342 Bank owned life insurance — 217,547 — 217,547 Derivative instruments — 39,721 — 39,721 $ — $ 1,506,693 $ — $ 1,506,693 Liabilities Derivative instruments $ — $ 41,431 $ — $ 41,431
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, 2021 and December 31, 2020: March 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 $ 45,956 $ — $ — $ 45,956 $ 19,838 Loans held for sale 1,044 1,044 — — — 47,000 1,044 — 45,956 19,838 December 31, 2020 (in thousands) Carrying Amount Quoted Significant Significant Total Impairments Description Loans held for investment measured for impairments using the fair value of the collateral $ 50,199 $ — $ — $ 50,199 $ 19,843
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, 2021 December 31, 2020 (in thousands) Carrying Estimated Carrying Estimated Financial assets: Loans $ 2,804,208 $ 2,725,232 $ 2,884,550 $ 2,801,279 Financial liabilities: Time deposits 1,387,791 1,405,972 1,547,396 1,569,897 Advances from the FHLB 1,050,000 1,068,572 1,050,000 1,078,786 Senior notes 58,656 61,606 58,577 61,528 Junior subordinated debentures 64,178 52,590 64,178 55,912

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2021
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 per share data) 2021 2020 Numerator: Net income available to common stockholders $ 14,459 $ 3,382 Denominator: ` Basic weighted average shares outstanding 37,618 42,185 Dilutive effect of share-based compensation awards 228 348 Diluted weighted average shares outstanding 37,846 42,533 Basic earnings per common share $ 0.38 $ 0.08 Diluted earnings per common share $ 0.38 $ 0.08

Business, Basis of Presentati_3

Business, Basis of Presentation and Summary of Significant Accounting Policies (Details)	May 04, 2021USD ($)	Mar. 31, 2021USD ($)subsidiary$ / shares	Dec. 31, 2020USD ($)$ / shares	Mar. 31, 2021USD ($)$ / shares	Mar. 10, 2021USD ($)	Jan. 01, 2021USD ($)
Class of Stock [Line Items]
Number of subsidiaries | subsidiary		3
Financing receivable modification, CARES Act, percent		1.10%	0.70%	1.10%
Right-of-use asset		$ 54,500,000		$ 54,500,000
Total lease obligations		55,004,000		55,004,000
Adjustments for New Accounting Pronouncement
Class of Stock [Line Items]
Right-of-use asset						$ 54,500,000
COVID-19
Class of Stock [Line Items]
Loans, net		$ 1,100,000,000		1,100,000,000
COVID-19 | Deferral and/or Forbearance Period, Third Deferral
Class of Stock [Line Items]
Period		180 days
COVID-19 | Deferral and/or Forbearance Period
Class of Stock [Line Items]
Loans, net		$ 62,100,000	$ 43,400,000	62,100,000
Subsequent Event
Class of Stock [Line Items]
Loans and Leases Receivable, Gain (Loss) on Sales, Paycheck Protection Program	$ 3,800,000
PPP Loans
Class of Stock [Line Items]
Amount of loans approved			$ 198,500,000	$ 164,800,000
Amount of loans approved, percent of total loans			3.40%	2.90%
Estimated deposits, PPP		$ 173,200,000	$ 95,400,000	$ 173,200,000
PPP Loans | Subsequent Event
Class of Stock [Line Items]
PPP loans sold	$ 95,100,000
Class A Common Stock
Class of Stock [Line Items]
Common stock, par value (in dollars per share) | $ / shares		$ 0.10	$ 0.10	$ 0.10
Class B Common Stock
Class of Stock [Line Items]
Common stock, par value (in dollars per share) | $ / shares		$ 0.10	$ 0.10	$ 0.10
Stock repurchase program, authorized amount					$ 40,000,000
Amerant Bank, N.A
Class of Stock [Line Items]
Ownership percentage of subsidiary		100.00%		100.00%

Interest Earning Deposits wit_2

Interest Earning Deposits with Banks (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Cash and Cash Equivalents [Abstract]
Interest earning deposits with banks	$ 195,755	$ 184,207
Average interest rate on deposits with banks	0.10%	0.31%
Interest earning deposits with banks, maturity	1 year

Securities - Amortized Cost to

Securities - Amortized Cost to Fair Value of Available for Sale Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 1,168,371	$ 1,187,778
Gross Unrealized Gains	28,905	41,433
Gross Unrealized Losses	(7,075)	(4,128)
Estimated Fair Value	1,190,201	1,225,083
U.S. government-sponsored enterprise debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	598,250	640,796
Gross Unrealized Gains	15,090	21,546
Gross Unrealized Losses	(2,637)	(1,007)
Estimated Fair Value	610,703	661,335
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	338,473	292,033
Gross Unrealized Gains	8,903	10,787
Gross Unrealized Losses	(1,802)	(1,106)
Estimated Fair Value	345,574	301,714
U.S. government agency debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	214,901	202,135
Gross Unrealized Gains	3,810	4,458
Gross Unrealized Losses	(2,636)	(2,015)
Estimated Fair Value	216,075	204,578
U.S. treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	2,504	2,505
Gross Unrealized Gains	6	7
Gross Unrealized Losses	0	0
Estimated Fair Value	2,510	2,512
Municipal bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	14,243	50,309
Gross Unrealized Gains	1,096	4,635
Gross Unrealized Losses	0	0
Estimated Fair Value	15,339	54,944
Residential Mortgage Backed Securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	624,000	647,000
Estimated Fair Value	637,500	666,700
Commercial Mortgage Backed Securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	134,500	123,900
Estimated Fair Value	$ 135,800	$ 128,400

Securities - Narrative (Details

Securities - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Investments	$ 1,375,292,000	$ 1,372,567,000
Debt securities available for sale	1,190,201,000	1,225,083,000
Original cost	24,000,000
Held-to-maturity, fair value	104,091,000	61,100,000
Debt securities held to maturity	104,657,000	58,127,000
Unrecognized gain	1,900,000	3,000,000
Gross unrealized losses	2,500,000	0
Equity securities with readily determinable fair value not held for trading	23,965,000	24,342,000
Foreign Corporate Debt Securities
Debt Securities, Available-for-sale [Line Items]
Investments	16,400,000	17,100,000
Debt securities available for sale	0	0
Mutual funds
Debt Securities, Available-for-sale [Line Items]
Unrealized loss	400,000
Unrealized gains	400,000
Residential Mortgage Backed Securities
Debt Securities, Available-for-sale [Line Items]
Debt securities available for sale	637,500,000	666,700,000
Held-to-maturity, fair value	73,600,000	29,500,000
Debt securities held to maturity	75,400,000	28,700,000
Commercial Mortgage Backed Securities
Debt Securities, Available-for-sale [Line Items]
Debt securities available for sale	135,800,000	128,400,000
Held-to-maturity, fair value	30,500,000	31,600,000
Debt securities held to maturity	$ 29,300,000	$ 29,500,000

Securities - Gross Realized Gai

Securities - Gross Realized Gains (Losses) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Investments, Debt and Equity Securities [Abstract]
Proceeds from sales, redemptions and calls of debt securities available for sale	$ 43,854	$ 139,072
Gross realized gains	2,947	9,266
Gross realized losses	0	(23)
Realized gains, net on sales of debt investment securities	$ 2,947	$ 9,243

Securities - Unrealized Loss on

Securities - Unrealized Loss on Available for Sale Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Estimated Fair Value	$ 186,601	$ 112,856
12 Months or More, Estimated Fair Value	97,147	95,436
Total, Estimated Fair Value	283,748	208,292
Less Than 12 Months, Unrealized Loss	(4,254)	(1,829)
12 Months or More, Unrealized Loss	(2,821)	(2,299)
Total, Unrealized Loss	(7,075)	(4,128)
U.S. government-sponsored enterprise debt securities
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Estimated Fair Value	86,734	71,825
12 Months or More, Estimated Fair Value	8,364	14,472
Total, Estimated Fair Value	95,098	86,297
Less Than 12 Months, Unrealized Loss	(2,413)	(661)
12 Months or More, Unrealized Loss	(224)	(346)
Total, Unrealized Loss	(2,637)	(1,007)
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Estimated Fair Value	63,290	31,777
12 Months or More, Estimated Fair Value	8,201	0
Total, Estimated Fair Value	71,491	31,777
Less Than 12 Months, Unrealized Loss	(1,049)	(1,106)
12 Months or More, Unrealized Loss	(753)	0
Total, Unrealized Loss	(1,802)	(1,106)
U.S. government agency debt securities
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Estimated Fair Value	36,577	9,254
12 Months or More, Estimated Fair Value	80,582	80,964
Total, Estimated Fair Value	117,159	90,218
Less Than 12 Months, Unrealized Loss	(792)	(62)
12 Months or More, Unrealized Loss	(1,844)	(1,953)
Total, Unrealized Loss	$ (2,636)	$ (2,015)

Securities - Contractual Maturi

Securities - Contractual Maturities on Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Available for Sale, Amortized Cost
Within 1 year	$ 16,480
After 1 year through 5 years	154,293
After 5 years through 10 years	291,573
After 10 years	706,025
Amortized Cost	1,168,371	$ 1,187,778
Available for Sale, Estimated Fair Value
Within 1 year	16,566
After 1 year through 5 years	158,338
After 5 years through 10 years	299,132
After 10 years	716,165
Estimated Fair Value	1,190,201	1,225,083
Held to Maturity, Amortized Cost
Within 1 year	0
After 1 year through 5 years	14,916
After 5 years through 10 years	11,353
After 10 years	78,388
Amortized Cost	104,657	58,127
Held to Maturity, Estimated Fair Value
Within 1 year	0
After 1 year through 5 years	14,773
After 5 years through 10 years	11,788
After 10 years	77,530
Estimated Fair Value	$ 104,091	$ 61,100

Loans - Loan Portfolio by Class

Loans - Loan Portfolio by Classes (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 5,753,794	$ 5,842,337	$ 5,668,327
Real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	4,353,676	4,424,031	2,933,836
Real estate loans | Non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,713,967	1,749,839
Real estate loans | Multi-family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	722,783	737,696
Real estate loans | Land development and construction loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	351,502	349,800
Real estate loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	2,788,252	2,837,335
Real estate loans | Single-family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	625,298	639,569
Real estate loans | Owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	940,126	947,127
Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,104,594	1,154,550	2,128,452
Loans to financial institutions and acceptances
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	16,658	16,636	16,576
Consumer loans and overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 278,866	$ 247,120	$ 589,463

Loans - Narrative (Details)

Loans - Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2021	Dec. 31, 2020
Receivables [Abstract]
Loans pledged as collateral		$ 1,400
Syndication facilities included in loans	$ 443	$ 455

Loans - Loans by Delinquency (D

Loans - Loans by Delinquency (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	$ 5,753,794	$ 5,842,337	$ 5,668,327
Current	5,672,613	5,779,827
Past Due	81,181	62,510
Total Loans in Nonaccrual Status	88,777	87,479
Total Loans 90 Days or More Past Due and Accruing	746	221
30-59 Days
Financing Receivable, Past Due [Line Items]
Past Due	24,948	8,829
60-89 Days
Financing Receivable, Past Due [Line Items]
Past Due	9,568	2,392
Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Past Due	46,665	51,289
Real estate loans
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	4,353,676	4,424,031	2,933,836
Current	4,314,952	4,402,725
Past Due	38,724	21,306
Total Loans in Nonaccrual Status	43,225	43,041
Total Loans 90 Days or More Past Due and Accruing	743	220
Real estate loans | 30-59 Days
Financing Receivable, Past Due [Line Items]
Past Due	24,220	5,069
Real estate loans | 60-89 Days
Financing Receivable, Past Due [Line Items]
Past Due	6,652	671
Real estate loans | Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Past Due	7,852	15,566
Real estate loans | Non-owner occupied
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	1,713,967	1,749,839
Current	1,706,681	1,741,862
Past Due	7,286	7,977
Total Loans in Nonaccrual Status	8,515	8,219
Total Loans 90 Days or More Past Due and Accruing	743	0
Real estate loans | Non-owner occupied | 30-59 Days
Financing Receivable, Past Due [Line Items]
Past Due	5,570	1,487
Real estate loans | Non-owner occupied | 60-89 Days
Financing Receivable, Past Due [Line Items]
Past Due	973	0
Real estate loans | Non-owner occupied | Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Past Due	743	6,490
Real estate loans | Multi-family residential
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	722,783	737,696
Current	713,361	737,696
Past Due	9,422	0
Total Loans in Nonaccrual Status	11,369	11,340
Total Loans 90 Days or More Past Due and Accruing	0	0
Real estate loans | Multi-family residential | 30-59 Days
Financing Receivable, Past Due [Line Items]
Past Due	9,422	0
Real estate loans | Multi-family residential | 60-89 Days
Financing Receivable, Past Due [Line Items]
Past Due	0	0
Real estate loans | Multi-family residential | Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Past Due	0	0
Real estate loans | Land development and construction loans
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	351,502	349,800
Current	351,502	349,800
Past Due	0	0
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 | 30-59 Days
Financing Receivable, Past Due [Line Items]
Past Due	0	0
Real estate loans | Land development and construction loans | 60-89 Days
Financing Receivable, Past Due [Line Items]
Past Due	0	0
Real estate loans | Land development and construction loans | Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Past Due	0	0
Real estate loans | Commercial real estate
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	2,788,252	2,837,335
Current	2,771,544	2,829,358
Past Due	16,708	7,977
Total Loans in Nonaccrual Status	19,884	19,559
Total Loans 90 Days or More Past Due and Accruing	743	0
Real estate loans | Commercial real estate | 30-59 Days
Financing Receivable, Past Due [Line Items]
Past Due	14,992	1,487
Real estate loans | Commercial real estate | 60-89 Days
Financing Receivable, Past Due [Line Items]
Past Due	973	0
Real estate loans | Commercial real estate | Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Past Due	743	6,490
Real estate loans | Single-family residential
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	625,298	639,569
Current	612,490	631,801
Past Due	12,808	7,768
Total Loans in Nonaccrual Status	10,814	10,667
Total Loans 90 Days or More Past Due and Accruing	0	0
Real estate loans | Single-family residential | 30-59 Days
Financing Receivable, Past Due [Line Items]
Past Due	8,793	3,143
Real estate loans | Single-family residential | 60-89 Days
Financing Receivable, Past Due [Line Items]
Past Due	611	671
Real estate loans | Single-family residential | Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Past Due	3,404	3,954
Real estate loans | Owner occupied
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	940,126	947,127
Current	930,918	941,566
Past Due	9,208	5,561
Total Loans in Nonaccrual Status	12,527	12,815
Total Loans 90 Days or More Past Due and Accruing	0	220
Real estate loans | Owner occupied | 30-59 Days
Financing Receivable, Past Due [Line Items]
Past Due	435	439
Real estate loans | Owner occupied | 60-89 Days
Financing Receivable, Past Due [Line Items]
Past Due	5,068	0
Real estate loans | Owner occupied | Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Past Due	3,705	5,122
Commercial loans
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	1,104,594	1,154,550	2,128,452
Current	1,062,400	1,113,469
Past Due	42,194	41,081
Total Loans in Nonaccrual Status	45,282	44,205
Total Loans 90 Days or More Past Due and Accruing	0	0
Commercial loans | 30-59 Days
Financing Receivable, Past Due [Line Items]
Past Due	512	3,675
Commercial loans | 60-89 Days
Financing Receivable, Past Due [Line Items]
Past Due	2,896	1,715
Commercial loans | Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Past Due	38,786	35,691
Loans to financial institutions and acceptances
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	16,658	16,636	16,576
Current	16,658	16,636
Past Due	0	0
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 | 30-59 Days
Financing Receivable, Past Due [Line Items]
Past Due	0	0
Loans to financial institutions and acceptances | 60-89 Days
Financing Receivable, Past Due [Line Items]
Past Due	0	0
Loans to financial institutions and acceptances | Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Past Due	0	0
Consumer loans and overdrafts
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	278,866	247,120	$ 589,463
Current	278,603	246,997
Past Due	263	123
Total Loans in Nonaccrual Status	270	233
Total Loans 90 Days or More Past Due and Accruing	3	1
Consumer loans and overdrafts | 30-59 Days
Financing Receivable, Past Due [Line Items]
Past Due	216	85
Consumer loans and overdrafts | 60-89 Days
Financing Receivable, Past Due [Line Items]
Past Due	20	6
Consumer loans and overdrafts | Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Past Due	$ 27	$ 32

Allowance for Loan Losses - All

Allowance for Loan Losses - Allowances by Loan Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Allowance for Credit Losses
Balances at beginning of the period	$ 110,902	$ 52,223
Provision for loan losses	0	22,000
Recoveries	704	333
Balances at end of the period	110,940	72,948
Allowance for loan losses by impairment methodology, Individually evaluated			$ 30,660		$ 6,720
Allowance for loan losses by impairment methodology, Collectively evaluated			80,280		66,228
Allowance for credit loss	110,902	72,948	110,940	$ 110,902	72,948
Investment in loans, net of unearned income, Individually evaluated			89,044		33,689
Investment in loans, net of unearned income, Collectively evaluated			5,664,750		5,634,638
Total Loans, Net of Unearned Income			5,753,794	5,842,337	5,668,327
Domestic
Allowance for Credit Losses
Loans charged-off	(666)	(1,323)
International
Allowance for Credit Losses
Loans charged-off	0	(285)
Total Loans, Net of Unearned Income			133,100	152,900
Real Estate
Allowance for Credit Losses
Balances at beginning of the period	50,227	25,040
Provision for loan losses	(1,936)	11,390
Recoveries	0	0
Balances at end of the period	48,291	36,430
Allowance for loan losses by impairment methodology, Individually evaluated			2,918		1,157
Allowance for loan losses by impairment methodology, Collectively evaluated			45,373		35,273
Allowance for credit loss	48,291	36,430	48,291	50,227	36,430
Investment in loans, net of unearned income, Individually evaluated					1,936
Investment in loans, net of unearned income, Collectively evaluated					2,931,900
Total Loans, Net of Unearned Income			4,353,676	4,424,031	2,933,836
Real Estate | Financing Receivable
Allowance for Credit Losses
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			2,762,815
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
Balances at beginning of the period	48,130	22,482
Provision for loan losses	702	7,530
Recoveries	605	185
Balances at end of the period	49,202	29,062
Allowance for loan losses by impairment methodology, Individually evaluated			26,665		4,038
Allowance for loan losses by impairment methodology, Collectively evaluated			22,537		25,024
Allowance for credit loss	49,202	29,062	49,202	48,130	29,062
Investment in loans, net of unearned income, Individually evaluated					24,232
Investment in loans, net of unearned income, Collectively evaluated					2,104,220
Total Loans, Net of Unearned Income			1,104,594	1,154,550	2,128,452
Commercial | Financing Receivable
Allowance for Credit Losses
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			2,215,354
Commercial | Domestic
Allowance for Credit Losses
Loans charged-off	(235)	(1,101)
Commercial | International
Allowance for Credit Losses
Loans charged-off	0	(34)
Financial Institutions
Allowance for Credit Losses
Balances at beginning of the period	1	42
Provision for loan losses	0	0
Recoveries	0	0
Balances at end of the period	1	42
Allowance for loan losses by impairment methodology, Individually evaluated			0		0
Allowance for loan losses by impairment methodology, Collectively evaluated			1		42
Allowance for credit loss	1	42	1	1	42
Investment in loans, net of unearned income, Individually evaluated					0
Investment in loans, net of unearned income, Collectively evaluated					16,576
Total Loans, Net of Unearned Income			16,658	16,636	16,576
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			18,073
Total Loans, Net of Unearned Income			18,073
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
Balances at beginning of the period	12,544	4,659
Provision for loan losses	1,234	3,080
Recoveries	99	148
Balances at end of the period	13,446	7,414
Allowance for loan losses by impairment methodology, Individually evaluated			1,077		1,525
Allowance for loan losses by impairment methodology, Collectively evaluated			12,369		5,889
Allowance for credit loss	13,446	7,414	13,446	12,544	7,414
Investment in loans, net of unearned income, Individually evaluated					7,521
Investment in loans, net of unearned income, Collectively evaluated					581,942
Total Loans, Net of Unearned Income			278,866	$ 247,120	$ 589,463
Consumer and Others | Financing Receivable
Allowance for Credit Losses
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			$ 757,552
Consumer and Others | Domestic
Allowance for Credit Losses
Loans charged-off	(431)	(222)
Consumer and Others | International
Allowance for Credit Losses
Loans charged-off	$ 0	$ (251)

Allowance for Loan Losses - Rec

Allowance for Loan Losses - Recorded Investment of Loan Sales (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Financing Receivable, Impaired [Line Items]
Amount of loan sales	$ 1,173	$ 13,109
Real Estate
Financing Receivable, Impaired [Line Items]
Amount of loan sales	0	0
Commercial
Financing Receivable, Impaired [Line Items]
Amount of loan sales	0	11,901
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	$ 1,173	$ 1,208

Allowance for Loan Losses - Imp

Allowance for Loan Losses - Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Impaired [Line Items]
Recorded Investment, With a Valuation Allowance	$ 49,186	$ 47,872
Recorded Investment, Without a Valuation Allowance	39,858	39,869
Recorded Investment, Total	89,044	87,741
Year Average	85,269	71,431
Total Unpaid Principal Balance	110,825	109,420
Valuation Allowance	30,660	29,948
Real estate loans
Financing Receivable, Impaired [Line Items]
Recorded Investment, With a Valuation Allowance	14,576	14,530
Recorded Investment, Without a Valuation Allowance	28,912	28,769
Recorded Investment, Total	43,488	43,299
Year Average	37,743	32,676
Total Unpaid Principal Balance	43,307	43,181
Valuation Allowance	4,037	4,621
Real estate loans | Non-owner occupied
Financing Receivable, Impaired [Line Items]
Recorded Investment, With a Valuation Allowance	8,523	8,219
Recorded Investment, Without a Valuation Allowance	0	0
Recorded Investment, Total	8,523	8,219
Year Average	8,364	6,718
Total Unpaid Principal Balance	8,513	8,227
Valuation Allowance	2,918	3,175
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	11,369	11,341
Recorded Investment, Total	11,369	11,341
Year Average	6,048	3,206
Total Unpaid Principal Balance	11,291	11,306
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	8,523	8,219
Recorded Investment, Without a Valuation Allowance	11,369	11,341
Recorded Investment, Total	19,892	19,560
Year Average	14,412	9,924
Total Unpaid Principal Balance	19,804	19,533
Valuation Allowance	2,918	3,175
Real estate loans | Single-family residential
Financing Receivable, Impaired [Line Items]
Recorded Investment, With a Valuation Allowance	5,421	5,675
Recorded Investment, Without a Valuation Allowance	5,648	5,250
Recorded Investment, Total	11,069	10,925
Year Average	10,392	9,457
Total Unpaid Principal Balance	11,132	10,990
Valuation Allowance	907	1,232
Real estate loans | Owner occupied
Financing Receivable, Impaired [Line Items]
Recorded Investment, With a Valuation Allowance	632	636
Recorded Investment, Without a Valuation Allowance	11,895	12,178
Recorded Investment, Total	12,527	12,814
Year Average	12,939	13,295
Total Unpaid Principal Balance	12,371	12,658
Valuation Allowance	212	214
Commercial loans
Financing Receivable, Impaired [Line Items]
Recorded Investment, With a Valuation Allowance	34,341	33,110
Recorded Investment, Without a Valuation Allowance	10,946	11,100
Recorded Investment, Total	45,287	44,210
Year Average	47,357	38,534
Total Unpaid Principal Balance	67,251	66,010
Valuation Allowance	26,453	25,180
Consumer loans and overdrafts
Financing Receivable, Impaired [Line Items]
Recorded Investment, With a Valuation Allowance	269	232
Recorded Investment, Without a Valuation Allowance	0	0
Recorded Investment, Total	269	232
Year Average	169	221
Total Unpaid Principal Balance	267	229
Valuation Allowance	$ 170	$ 147

Allowance for Loan Losses - TDR

Allowance for Loan Losses - TDR Loans (Details) $ in Thousands	3 Months Ended			12 Months Ended
	Mar. 31, 2021USD ($)contract	Jun. 30, 2020USD ($)	Mar. 31, 2020USD ($)	Dec. 31, 2020USD ($)contract
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	18			18
Recorded Investment	$ 12,442			$ 12,631
Recorded investment	89,044			$ 87,741
TDR loans modified that subsequently defaulted	$ 2,700
Real estate loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	8			7
Recorded Investment	$ 9,023			$ 8,780
Recorded investment	43,488			43,299
Real estate loans | South Florida
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded Investment	$ 9,800			$ 8,400
Real estate loans | Non-owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	1			1
Recorded Investment	$ 1,660			$ 1,729
Recorded investment	$ 8,523			$ 8,219
Write-offs		$ 1,900
Real estate loans | Single-family residential
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	3			2
Recorded Investment	$ 722			$ 267
Recorded investment	$ 11,069			$ 10,925
Number of contracts | contract	1
Recorded investment	$ 500		$ 0
Real estate loans | Owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	4			4
Recorded Investment	$ 6,641			$ 6,784
Recorded investment	$ 12,527			12,814
Number of contracts | contract	1
TDR loans modified that subsequently defaulted	$ 800
Real estate loans | Residential Loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Recorded investment	$ 1,500			$ 1,500
Financing receivable, not modified, number of contracts | contract	2			4
Commercial loans
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Contracts | contract	10			11
Recorded Investment	$ 3,419			$ 3,851
Recorded investment	$ 45,287			44,210
Number of contracts | contract	4
TDR loans modified that subsequently defaulted	$ 1,900
Real Estate and Commercial | Owner occupied
Financing Receivable, Troubled Debt Restructuring [Line Items]
Specific reserves	$ 800			$ 1,000

Allowance for Loan Losses - Cre

Allowance for Loan Losses - Credit Risk Quality (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020	Mar. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	$ 5,753,794	$ 5,842,337	$ 5,668,327
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	5,552,900	5,634,991
Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	109,564	118,813
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	61,837	61,308
Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	29,493	27,225
Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0	0
Real estate loans
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	4,353,676	4,424,031	2,933,836
Real estate loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	4,243,355	4,303,765
Real estate loans | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	66,251	76,379
Real estate loans | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	40,494	39,918
Real estate loans | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	3,576	3,969
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	1,713,967	1,749,839
Real estate loans | Non-owner occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	1,659,501	1,694,004
Real estate loans | Non-owner occupied | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	45,206	46,872
Real estate loans | Non-owner occupied | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	5,684	4,994
Real estate loans | Non-owner occupied | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	3,576	3,969
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	722,783	737,696
Real estate loans | Multi-family residential | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	711,414	726,356
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	11,369	11,340
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	351,502	349,800
Real estate loans | Land development and construction loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	351,502	342,636
Real estate loans | Land development and construction loans | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0	7,164
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	2,788,252	2,837,335
Real estate loans | Commercial real estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	2,722,417	2,762,996
Real estate loans | Commercial real estate | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	45,206	54,036
Real estate loans | Commercial real estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	17,053	16,334
Real estate loans | Commercial real estate | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	3,576	3,969
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	625,298	639,569
Real estate loans | Single-family residential | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	614,484	628,902
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	10,814	10,667
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	940,126	947,127
Real estate loans | Owner occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	906,454	911,867
Real estate loans | Owner occupied | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	21,045	22,343
Real estate loans | Owner occupied | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	12,627	12,917
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	1,104,594	1,154,550	2,128,452
Commercial loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	1,014,319	1,067,708
Commercial loans | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	43,313	42,434
Commercial loans | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	21,045	21,152
Commercial loans | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	25,917	23,256
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	16,658	16,636	16,576
Loans to financial institutions and acceptances | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	16,658	16,636
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	278,866	247,120	$ 589,463
Consumer loans and overdrafts | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	278,568	246,882
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	298	238
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, 2021	Dec. 31, 2020
Time Deposits Disclosure [Abstract]
Time deposits, $100,000 or more	$ 1,100	$ 1,300
Time deposits, $250,000 or more	581	$ 661
Brokered time deposits	$ 494

Advances from the Federal Hom_3

Advances from the Federal Home Loan Bank (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
2021	$ 50,000	$ 50,000
2022	70,000	70,000
2023	930,000	930,000
Advances from Federal Home Loan Banks	1,050,000	1,050,000
Callable Option
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Advances from Federal Home Loan Banks	$ 530,000	$ 530,000
Minimum | Callable Option
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Fixed interest rate	0.62%	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 | Minimum
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Interest Rate 2021	0.65%
Interest Rate 2022	0.87%
Interest Rate 2023	0.62%
3-month LIBOR | Maximum
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Interest Rate 2021	0.65%
Interest Rate 2022	0.95%
Interest Rate 2023	2.42%

Senior Notes (Details)

Senior Notes (Details) - Senior Notes - 5.75% Senior Notes due 2025 - USD ($) $ in Millions	Jun. 23, 2020	Sep. 30, 2020	Mar. 31, 2021
Debt Instrument [Line Items]
Face amount	$ 60
Interest rate, stated percentage	5.75%
Debt issuance costs	$ 1.6		$ 1.3
Proceeds from issuance of debt	$ 58.4	$ 58.7
Debt issuance costs, amortization period	5 years

Junior Subordinated Debenture_3

Junior Subordinated Debentures Held by Trust Subsidiaries (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
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, 2021	Dec. 31, 2020
Other Assets
Derivatives, Fair Value [Line Items]
Derivative asset	$ 23,596	$ 39,721
Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative liability	25,118	41,431
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	1,404	1,658
Derivatives Not Designated as Hedging Instruments | Interest Rate Swap Contracts | Other Assets
Derivatives, Fair Value [Line Items]
Derivative asset	23,589	39,715
Derivatives Not Designated as Hedging Instruments | Interest Rate Swap Contracts | Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative liability	23,589	39,715
Derivatives Not Designated as Hedging Instruments | Interest Rate Swap Contracts | Customers | Other Assets
Derivatives, Fair Value [Line Items]
Derivative asset	21,297	39,715
Derivatives Not Designated as Hedging Instruments | Interest Rate Swap Contracts | Customers | Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative liability	2,292	0
Derivatives Not Designated as Hedging Instruments | Interest Rate Swap Contracts | Third Party Broker | Other Assets
Derivatives, Fair Value [Line Items]
Derivative asset	2,292	0
Derivatives Not Designated as Hedging Instruments | Interest Rate Swap Contracts | Third Party Broker | Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative liability	21,297	39,715
Derivatives Not Designated as Hedging Instruments | Interest Rate Cap Contracts | Other Assets
Derivatives, Fair Value [Line Items]
Derivative asset	7	6
Derivatives Not Designated as Hedging Instruments | Interest Rate Cap Contracts | Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative liability	125	58
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	125	58
Derivatives Not Designated as Hedging Instruments | Interest Rate Cap Contracts | Third Party Broker | Other Assets
Derivatives, Fair Value [Line Items]
Derivative asset	7	6
Derivatives Not Designated as Hedging Instruments | Interest Rate Cap Contracts | Third Party Broker | Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative liability	$ 0	$ 0

Derivative Instruments - Narrat

Derivative Instruments - Narrative (Details)	3 Months Ended		12 Months Ended
	Mar. 31, 2021USD ($)instrument	Mar. 31, 2020USD ($)	Dec. 31, 2019USD ($)contract	Dec. 31, 2020USD ($)instrument
Derivatives, Fair Value [Line Items]
Net unrealized losses in accumulated other comprehensive expected to be reclassified into expense in the next twelve months	$ 600,000
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	$ 400,000
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)	$ 100,000
Derivatives Not Designated as Hedging Instruments | Interest Rate Swap Contracts | Customers
Derivatives, Fair Value [Line Items]
Number of instruments held | instrument	79			76
Notional amount	$ 480,600,000			$ 475,600,000
Derivatives Not Designated as Hedging Instruments | Interest Rate Swap Contracts | Third Party Broker
Derivatives, Fair Value [Line Items]
Number of instruments held | instrument	79			76
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	22			23
Notional amount	$ 452,400,000			$ 486,500,000
Derivatives Not Designated as Hedging Instruments | Interest Rate Cap Contracts | Third Party Broker
Derivatives, Fair Value [Line Items]
Number of instruments held | instrument	7			8
Notional amount	$ 118,100,000			$ 152,200,000

Derivative Instruments - Credit

Derivative Instruments - Credit Risk (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Fair value of derivative contracts	$ 24,993	$ 41,373
Securities Pledged	31,586	52,857
Liquidity exposure	$ (6,593)	$ (11,484)

Leases - Additional Information

Leases - Additional Information (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2021USD ($)
Leases [Abstract]
Variable lease cost	$ 333
Right-of-use asset	54,500
Total lease obligations	$ 55,004
Minimum
Lessee, Lease, Description [Line Items]
Term of contract	1 year
Maximum
Lessee, Lease, Description [Line Items]
Term of contract	45 years

Leases - Cost (Details)

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

Leases - Maturities (Details)

Leases - Maturities (Details) $ in Thousands	Mar. 31, 2021USD ($)
Twelve Months Ended March 31,
2021	$ 7,113
2022	6,335
2023	4,504
2024	4,483
2025	4,145
Thereafter	77,444
Total minimum payments required	104,024
Less: implied interest	(49,020)
Total lease obligations	$ 55,004

Stock-based Incentive Compens_3

Stock-based Incentive Compensation Plan - Restricted Stock (Details)	3 Months Ended
	Mar. 31, 2021$ / sharesshares
Number of restricted shares (in shares)
Non-vested shares, end of year (in shares)	562,648
Restricted Stock
Number of restricted shares (in shares)
Non-vested shares, beginning of year (in shares)	210,423
Grants in period (in shares)	196,015
Vested (in shares)	(2,630)
Forfeited (in shares)	0
Non-vested shares, end of year (in shares)	403,808
Weighted-average grant date fair value (in dollars per share)
Non-vested shares, beginning of year (in dollars per share) | $ / shares	$ 13.55
Granted, Weighted average grant date fair value (in dollars per share) | $ / shares	16.65
Vested, Weighted average grant date fair value (in dollars per share) | $ / shares	14.91
Forfeited, Weighted average grant date fair value (in dollars per share) | $ / shares	0
Non-vested shares, end of year (in dollars per share) | $ / shares	$ 15.05

Stock-based Incentive Compens_4

Stock-based Incentive Compensation Plan - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	Mar. 02, 2021	Feb. 16, 2021	Mar. 31, 2021	Mar. 31, 2020
Restricted Stock
Defined Contribution Plan Disclosure [Line Items]
Grants in period (in shares)			196,015
Grants in period, weighted average grant date fair value (in dollars per share)			$ 16.65
Restricted Stock | Class A Common Stock
Defined Contribution Plan Disclosure [Line Items]
Grants in period (in shares)	1,523	194,492
Award vesting period	3 years	3 years
Grants in period, weighted average grant date fair value (in dollars per share)	$ 16.41	$ 16.65
Share-based compensation expense			$ 0.5	$ 0.3
Nonvested awards, compensation not yet recognized			$ 3.7
Nonvested awards, period of recognition			1 year 8 months 12 days
RSUs
Defined Contribution Plan Disclosure [Line Items]
Grants in period (in shares)			120,513
Grants in period, weighted average grant date fair value (in dollars per share)			$ 16.65
Share-based compensation expense			$ 0.4	$ 0.1
Nonvested awards, compensation not yet recognized			$ 3.6
Nonvested awards, period of recognition			2 years 3 months 18 days

Stock-based Incentive Compens_5

Stock-based Incentive Compensation Plan - Restricted Stock Units, Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	Feb. 16, 2021	Mar. 31, 2021	Mar. 31, 2020
PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Nonvested awards, compensation not yet recognized		$ 3.6
Nonvested awards, period of recognition		2 years 3 months 18 days
PSUs | Five Executives
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares)	58,136
Award vesting period	3 years
Grants in period, weighted average grant date fair value (in dollars per share)	$ 16.67
PSUs | Five Executives | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Actual numbers of awards earned as percent of target	50.00%
PSUs | Five Executives | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Actual numbers of awards earned as percent of target	150.00%
PSUs | Executive
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares)	62,377
Award vesting period	3 years
Grants in period, weighted average grant date fair value (in dollars per share)	$ 11.15
PSUs | Executive | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Actual numbers of awards earned as percent of target	50.00%
PSUs | Executive | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Actual numbers of awards earned as percent of target	100.00%
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares)		120,513
Grants in period, weighted average grant date fair value (in dollars per share)		$ 16.65
Share-based compensation expense		$ 0.4	$ 0.1
Nonvested awards, compensation not yet recognized		$ 3.6
Nonvested awards, period of recognition		2 years 3 months 18 days
RSUs | Five Executives
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares)	58,136
Award vesting period	3 years
Grants in period, weighted average grant date fair value (in dollars per share)	$ 16.65
RSUs | Executive
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Grants in period (in shares)	62,377
Award vesting period	3 years
Grants in period, weighted average grant date fair value (in dollars per share)	$ 16.65

Stock-based Incentive Compens_6

Stock-based Incentive Compensation Plan - Restricted Stock Units (Details)	3 Months Ended
	Mar. 31, 2021$ / sharesshares
Number of restricted shares (in shares)
Non-vested shares, end of year (in shares)	562,648
Stock-settled RRSUs
Number of restricted shares (in shares)
Non-vested shares, beginning of year (in shares)	38,327
Grants in period (in shares)	120,513
Vested (in shares)	0
Forfeited (in shares)	0
Non-vested shares, end of year (in shares)	158,840
Weighted-average grant date fair value (in dollars per share)
Non-vested shares, beginning of year (in dollars per share) | $ / shares	$ 13.45
Granted, Weighted average grant date fair value (in dollars per share) | $ / shares	16.65
Vested, Weighted average grant date fair value (in dollars per share) | $ / shares	0
Forfeited, Weighted average grant date fair value (in dollars per share) | $ / shares	0
Non-vested shares, end of year (in dollars per share) | $ / shares	$ 15.88
Cash-settled RSUs
Number of restricted shares (in shares)
Non-vested shares, beginning of year (in shares)	20,766
Grants in period (in shares)	0
Vested (in shares)	0
Forfeited (in shares)	0
Non-vested shares, end of year (in shares)	20,766
Weighted-average grant date fair value (in dollars per share)
Non-vested shares, beginning of year (in dollars per share) | $ / shares	$ 13.45
Granted, Weighted average grant date fair value (in dollars per share) | $ / shares	0
Vested, Weighted average grant date fair value (in dollars per share) | $ / shares	0
Forfeited, Weighted average grant date fair value (in dollars per share) | $ / shares	0
Non-vested shares, end of year (in dollars per share) | $ / shares	$ 13.45
RSUs
Number of restricted shares (in shares)
Non-vested shares, beginning of year (in shares)	59,093
Grants in period (in shares)	120,513
Vested (in shares)	0
Forfeited (in shares)	0
Non-vested shares, end of year (in shares)	179,606
Weighted-average grant date fair value (in dollars per share)
Non-vested shares, beginning of year (in dollars per share) | $ / shares	$ 13.72
Granted, Weighted average grant date fair value (in dollars per share) | $ / shares	16.65
Vested, Weighted average grant date fair value (in dollars per share) | $ / shares	0
Forfeited, Weighted average grant date fair value (in dollars per share) | $ / shares	0
Non-vested shares, end of year (in dollars per share) | $ / shares	$ 15.69
Stock-settled PSUs
Number of restricted shares (in shares)
Non-vested shares, beginning of year (in shares)	0
Grants in period (in shares)	120,513
Vested (in shares)	0
Forfeited (in shares)	0
Non-vested shares, end of year (in shares)	120,513
Weighted-average grant date fair value (in dollars per share)
Non-vested shares, beginning of year (in dollars per share) | $ / shares	$ 0
Granted, Weighted average grant date fair value (in dollars per share) | $ / shares	13.82
Vested, Weighted average grant date fair value (in dollars per share) | $ / shares	0
Forfeited, Weighted average grant date fair value (in dollars per share) | $ / shares	0
Non-vested shares, end of year (in dollars per share) | $ / shares	$ 13.82

Income Taxes (Details)

Income Taxes (Details)	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Income Tax Disclosure [Abstract]
Effective income tax rate	20.15%	20.83%

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (“AOCI”) - Components of AOCL (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Before Tax Amount	$ 26,351	$ 41,910
Tax Effect	(6,442)	(10,246)
Net of Tax Amount	19,909	31,664
Net unrealized holding gains on debt securities available for sale
Accumulated Other Comprehensive Income (Loss) [Line Items]
Before Tax Amount	21,830	37,305
Tax Effect	(5,337)	(9,120)
Net of Tax Amount	16,493	28,185
Net unrealized holding gains on interest rate swaps designated as cash flow hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Before Tax Amount	4,521	4,605
Tax Effect	(1,105)	(1,126)
Net of Tax Amount	$ 3,416	$ 3,479

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Income (“AOCI”) - Components of Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Before Tax Amount
Total other comprehensive (loss) income, Before Tax Amount	$ (15,559)	$ 23,669
Tax Effect
Total other comprehensive (loss) income, Tax Effect	3,804	(5,786)
Net of Tax Amount
Reclassification adjustment for net gains (losses) included in net income, Net of Tax Amount	(2,325)	(7,305)
Other comprehensive (loss) income	(11,755)	17,883
Net unrealized holding (losses) gains on debt securities available for sale:
Before Tax Amount
Change in fair value arising during the period, Before Tax Amount	(12,528)	35,342
Reclassification adjustment for net gains (losses) included in net income, Before Tax Amount	(2,947)	(9,243)
Total other comprehensive (loss) income, Before Tax Amount	(15,475)	26,099
Tax Effect
Change in fair value arising during the period, Tax Effect	3,062	(8,640)
Reclassification adjustment for net gains (losses) included in net income, Tax Effect	721	2,260
Total other comprehensive (loss) income, Tax Effect	3,783	(6,380)
Net of Tax Amount
Change in fair value arising during the period, Net of Tax Amount	(9,466)	26,702
Reclassification adjustment for net gains (losses) included in net income, Net of Tax Amount	(2,226)	(6,983)
Other comprehensive (loss) income	(11,692)	19,719
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	47	(2,004)
Reclassification adjustment for net gains (losses) included in net income, Before Tax Amount	(131)	(426)
Total other comprehensive (loss) income, Before Tax Amount	(84)	(2,430)
Tax Effect
Change in fair value arising during the period, Tax Effect	(11)	490
Reclassification adjustment for net gains (losses) included in net income, Tax Effect	32	104
Total other comprehensive (loss) income, Tax Effect	21	594
Net of Tax Amount
Change in fair value arising during the period, Net of Tax Amount	36	(1,514)
Reclassification adjustment for net gains (losses) included in net income, Net of Tax Amount	(99)	(322)
Other comprehensive (loss) income	$ (63)	$ (1,836)

Stockholders_ Equity (Details)

Stockholders’ Equity (Details) - USD ($)	3 Months Ended
	Mar. 31, 2021	Mar. 10, 2021	Dec. 31, 2020	Mar. 31, 2020	Dec. 31, 2019
Class A Common Stock
Class of Stock [Line Items]
Common stock, shares outstanding (in shares)	29,001,646		28,806,344
Common stock, shares issued (in shares)	29,001,646		28,806,344
Class A Common Stock | Common Stock
Class of Stock [Line Items]
Common stock, shares outstanding (in shares)	29,001,646		28,806,344	28,879,576	28,927,576
Class B Common Stock
Class of Stock [Line Items]
Common stock, shares outstanding (in shares)	8,920,315
Common stock, shares issued (in shares)	8,920,315		9,036,352
Treasury stock (in shares)	0
Stock repurchase program, authorized amount		$ 40,000,000
Treasury stock, acquired (in shares)	116,037
Treasury stock acquired (in dollars per share)	$ 15.98
Treasury stock acquired	$ 1,900,000
Treasury stock authorized for cancellation (in shares)	116,037
Class B Common Stock | Common Stock
Class of Stock [Line Items]
Common stock, shares outstanding (in shares)	8,920,315		9,036,352	13,286,137	14,218,596
Class B Common Stock | Common Stock | Maximum
Class of Stock [Line Items]
Stock repurchase program, authorized amount		$ 40,000,000

Contingencies (Details)

Contingencies (Details) $ in Thousands	Mar. 31, 2021USD ($)
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Approximate Contract Amount	$ 771,723
Commitments to extend credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Approximate Contract Amount	761,378
Standby letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Approximate Contract Amount	9,644
Commercial letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Approximate Contract Amount	$ 701

Fair Value Measurements - Asset

Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Debt securities available for sale
Debt securities available for sale	$ 1,190,201	$ 1,225,083
Equity securities with readily determinable fair value not held for trading	23,965	24,342
Fair Value, Measurements, Recurring
Debt securities available for sale
Debt securities available for sale	1,190,201	1,225,083
Equity securities with readily determinable fair value not held for trading	23,965	24,342
Bank owned life insurance	218,903	217,547
Derivative instruments	23,596	39,721
Assets, fair value	1,456,665	1,506,693
Liabilities
Derivative instruments	25,118	41,431
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	0	0
Bank owned life insurance	0	0
Derivative instruments	0	0
Assets, fair value	0	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	1,190,201	1,225,083
Equity securities with readily determinable fair value not held for trading	23,965	24,342
Bank owned life insurance	218,903	217,547
Derivative instruments	23,596	39,721
Assets, fair value	1,456,665	1,506,693
Liabilities
Derivative instruments	25,118	41,431
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
Bank owned life insurance	0	0
Derivative instruments	0	0
Assets, fair value	0	0
Liabilities
Derivative instruments	0	0
U.S. government-sponsored enterprise debt securities
Debt securities available for sale
Debt securities available for sale	610,703	661,335
U.S. government-sponsored enterprise debt securities | Fair Value, Measurements, Recurring
Debt securities available for sale
Debt securities available for sale	610,703	661,335
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	610,703	661,335
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	345,574	301,714
Corporate debt securities | Fair Value, Measurements, Recurring
Debt securities available for sale
Debt securities available for sale	345,574	301,714
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	345,574	301,714
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	216,075	204,578
U.S. government agency debt securities | Fair Value, Measurements, Recurring
Debt securities available for sale
Debt securities available for sale	216,075	204,578
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	216,075	204,578
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
Municipal bonds
Debt securities available for sale
Debt securities available for sale	15,339	54,944
Municipal bonds | Fair Value, Measurements, Recurring
Debt securities available for sale
Debt securities available for sale	15,339	54,944
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	15,339	54,944
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	2,510	2,512
U.S treasury securities | Fair Value, Measurements, Recurring
Debt securities available for sale
Debt securities available for sale	2,510	2,512
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	2,510	2,512
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, 2021	Dec. 31, 2020
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, 2021	Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	$ 47,000	$ 50,199
Total Impairments	19,838	19,843
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	45,956
Total Impairments	19,838
Loans held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	1,044
Total Impairments	0
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	1,044	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
Quoted Prices in Active Markets for Identical Assets (Level 1) | Loans held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	1,044
Significant Other Observable Inputs (Level 2)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	0	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
Significant Other Observable Inputs (Level 2) | Loans held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	0
Significant Other Unobservable Inputs (Level 3)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	45,956	$ 50,199
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	45,956
Significant Other Unobservable Inputs (Level 3) | Loans held for sale
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets measured at fair value	$ 0

Fair Value Measurements - Summa

Fair Value Measurements - Summary of Financial Instruments Where Fair Value Differs from Carrying Value (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Carrying Value
Financial assets:
Loans	$ 2,804,208	$ 2,884,550
Financial liabilities:
Time deposits	1,387,791	1,547,396
Advances from the FHLB	1,050,000	1,050,000
Senior notes	58,656	58,577
Junior subordinated debentures	64,178	64,178
Estimated Fair Value
Financial assets:
Loans	2,725,232	2,801,279
Financial liabilities:
Time deposits	1,405,972	1,569,897
Advances from the FHLB	1,068,572	1,078,786
Senior notes	61,606	61,528
Junior subordinated debentures	$ 52,590	$ 55,912

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Earnings Per Share [Abstract]
Net income available to common stockholders	$ 14,459	$ 3,382
Basic weighted average shares outstanding (in shares)	37,618,000	42,185,000
Dilutive effect of share-based compensation awards (in shares)	228,000	348,000
Diluted weighted average shares outstanding (in shares)	37,846,000	42,533,000
Basic earnings per common share (in dollars per share)	$ 0.38	$ 0.08
Diluted earnings per common share (in dollars per share)	$ 0.38	$ 0.08
Non-vested shares (in shares)	562,648	482,316