Amerant Bancorp (AMTB) 10-Q 8 May 20 2020 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2020	May 06, 2020
Entity Registrant Name	Amerant Bancorp Inc.
Entity Central Index Key	0001734342
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Document Type	10-Q
Document Period End Date	Mar. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	Q1
Amendment Flag	false
Entity Small Business	false
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Current Reporting Status	Yes
Class A common stock
Entity Common Stock, Shares Outstanding		28,879,576
Class B common stock
Entity Common Stock, Shares Outstanding		13,286,137

Consolidated Balance Sheets

Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Assets
Cash and due from banks	$ 22,303	$ 28,035
Interest earning deposits with banks	248,750	93,289
Cash and cash equivalents	271,053	121,324
Securities
Debt securities available for sale	1,601,303	1,568,752
Debt securities held to maturity	70,336	73,876
Equity securities with readily determinable fair value not held for trading	24,225	23,848
Federal Reserve Bank and Federal Home Loan Bank stock	74,123	72,934
Securities	1,769,987	1,739,410
Loans held for investment, gross	5,668,327	5,744,339
Less: Allowance for loan losses	72,948	52,223
Loans held for investment, net	5,595,379	5,692,116
Bank owned life insurance	213,266	211,852
Premises and equipment, net	128,232	128,824
Deferred tax assets, net	4,933	5,480
Goodwill	19,506	19,506
Accrued interest receivable and other assets	96,454	66,887
Total assets	8,098,810	7,985,399
Deposits
Noninterest bearing	779,842	763,224
Interest bearing	1,088,033	1,098,323
Savings and money market	1,432,891	1,475,257
Time	2,541,446	2,420,339
Total deposits	5,842,212	5,757,143
Advances from the Federal Home Loan Bank and other borrowings	1,265,000	1,235,000
Junior subordinated debentures held by trust subsidiaries	64,178	92,246
Accounts payable, accrued liabilities and other liabilities	86,303	66,309
Total liabilities	7,257,693	7,150,698
Commitments and contingencies (Note 14)
Stockholders’ equity
Additional paid in capital	358,277	419,048
Retained earnings	447,506	444,124
Accumulated other comprehensive income	31,117	13,234
Total stockholders' equity	841,117	834,701
Total liabilities and stockholders' equity	8,098,810	7,985,399
Class A common stock
Stockholders’ equity
Common stock	2,888	2,893
Class B common stock
Stockholders’ equity
Common stock	1,329	1,775
Treasury stock, at cost; 3,532,457 shares of Class B common stock in 2019.	$ 0	$ (46,373)

Consolidated Balance Sheets (Pa

Consolidated Balance Sheets (Parenthetical) - $ / shares	Mar. 31, 2020	Dec. 31, 2019
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)	28,879,576	28,927,576
Common stock, shares outstanding (in shares)	28,879,576	28,927,576
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)	13,286,137	17,751,053
Common stock, shares outstanding (in shares)	13,286,137	14,218,596
Treasury stock (in shares)	0	3,532,457

Consolidated Statements of Oper

Consolidated Statements of Operations and Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Interest income
Loans	$ 59,788	$ 66,722
Investment securities	11,065	12,581
Interest earning deposits with banks	462	1,004
Total interest income	71,315	80,307
Interest expense
Interest bearing demand deposits	135	274
Savings and money market deposits	3,266	3,733
Time deposits	13,484	12,553
Advances from the Federal Home Loan Bank	4,412	6,205
Junior subordinated debentures	789	2,105
Total interest expense	22,086	24,870
Net interest income	49,229	55,437
Provision for loan losses	22,000	0
Net interest income after provision for loan losses	27,229	55,437
Noninterest income
Deposits and service fees	4,290	4,086
Brokerage, advisory and fiduciary activities	4,133	3,688
Change in cash surrender value of bank owned life insurance	1,414	1,404
Securities gains, net	9,620	4
Cards and trade finance servicing fees	395	915
(Loss) gain on early extinguishment of advances from the Federal Home Loan Bank, net	(7)	557
Data processing and fees for other services	0	520
Other noninterest income	2,065	1,982
Total noninterest income	21,910	13,156
Noninterest expense
Salaries and employee benefits	29,326	33,437
Occupancy and equipment	3,803	4,042
Telecommunication and data processing	3,464	3,026
Professional and other services fees	2,954	3,444
Depreciation and amortization	1,959	1,942
FDIC assessments and insurance	1,118	1,393
Other operating expenses	2,243	4,661
Total noninterest expenses	44,867	51,945
Income before income tax	4,272	16,648
Income tax expense	(890)	(3,577)
Net income	3,382	13,071
Other comprehensive income, net of tax
Net unrealized holding gains on debt securities available for sale arising during the period	26,702	16,278
Net unrealized holding losses on cash flow hedges arising during the period	(1,514)	(11)
Reclassification adjustment for items included in net income	(7,305)	(252)
Other comprehensive income	17,883	16,015
Comprehensive income	$ 21,265	$ 29,086
Earnings Per Share (Note 16):
Basic earnings per common share (in dollars per share)	$ 0.08	$ 0.31
Diluted earnings per common share (in dollars per share)	$ 0.08	$ 0.30

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, 2018				26,851,832	16,330,917
Beginning balance at Dec. 31, 2018	$ 747,418			$ 2,686	$ 1,775	$ 385,367	$ (17,908)	$ 393,662	$ (18,164)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Common stock issued (in shares)				2,132,865
Common stock issued	29,218			$ 213		29,005
Repurchase of Class B common stock (in shares)					(2,112,321)
Repurchase of Class B common stock	(28,465)						(28,465)
Restricted stock issued (in shares)				1,299
Restricted stock issued	0
Stock-based compensation expense	1,492					1,492
Net income	13,071							13,071
Other comprehensive (loss) income	16,015								16,015
Shares outstanding (in shares) at Mar. 31, 2019				28,985,996	14,218,596
Ending balance at Mar. 31, 2019	778,749			$ 2,899	$ 1,775	415,864	(46,373)	406,733	(2,149)
Shares outstanding (in shares) at Dec. 31, 2019		28,927,576	14,218,596	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	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	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

Consolidated Statements of Cash

Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Cash flows from operating activities
Net income	$ 3,382	$ 13,071
Adjustments to reconcile net income to net cash provided by operating activities
Provision for loan losses	22,000	0
Net premium amortization on securities	3,775	3,453
Depreciation and amortization	1,959	1,942
Stock-based compensation expense	392	1,492
Change in cash surrender value of bank owned life insurance	(1,414)	(1,404)
Deferred taxes, securities net gains or losses and others	(14,875)	1,238
Loss (gain) on early extinguishment of advances from the FHLB	7	(557)
Net changes in operating assets and liabilities:
Accrued interest receivable and other assets	(1,539)	8,777
Accounts payable, accrued liabilities and other liabilities	(10,509)	(15,431)
Net cash provided by operating activities	3,178	12,581
Purchases of investment securities:
Available for sale	(197,522)	(110,170)
Federal Home Loan Bank stock	(8,538)	(4,888)
Purchases of investment securities	(206,060)	(115,058)
Maturities, sales and calls of investment securities:
Available for sale	196,698	162,796
Held to maturity	3,382	1,205
Federal Home Loan Bank stock	7,349	9,248
Maturities, sales and calls of investment securities	207,429	173,249
Net decrease in loans	61,641	22,173
Proceeds from loan portfolio sales	13,109	152,177
Net purchases of premises and equipment and others	(1,321)	(1,951)
Net cash provided by investing activities	74,798	230,590
Cash flows from financing activities
Net decrease in demand, savings and money market accounts	(36,038)	(116,499)
Net increase (decrease) in time deposits	121,107	(27,999)
Proceeds from Advances from the Federal Home Loan Bank and other borrowings	280,000	170,000
Repayments of Advances from the Federal Home Loan Bank and other borrowings	(250,007)	(265,447)
Redemption of junior subordinated debentures	(28,068)	0
Proceeds from common stock issued - Class A	0	29,218
Repurchase of common stock - Class B	(15,239)	(28,465)
Common stock retired to cover tax withholding	2	0
Net cash provided by (used in) financing activities	71,753	(239,192)
Net increase in cash and cash equivalents	149,729	3,979
Cash and cash equivalents
Beginning of period	121,324	85,710
End of period	271,053	89,689
Supplemental disclosures of cash flow information
Cash paid for Interest	21,890	24,086
Cash paid for Income taxes	$ 295	$ 385

Business, Basis of Presentation

Business, Basis of Presentation and Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2020
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. 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. The Company is managed using a single segment concept, on a consolidated basis, and management determined that no separate current or historical reportable segment disclosures are required under generally accepted accounting principles in the United States of America (“U.S. GAAP”). Initial Public Offering and Shares Repurchase On December 21, 2018, the Company completed an initial public offering (the “IPO”). In March 2019, the Company repurchased the remaining shares of its Class B common stock held by Mercantil Servicios Financieros, C.A., the Company’s former parent company (“the Former Parent”). For more information about the IPO and the repurchase of Class B common stock previously held by the Former Parent, see Note 15 to our audited consolidated financial statements included in the Company’s annual report on Form 10-K filed with the U.S. Securities and Exchange Commission (the “SEC”) on March 16, 2020 (the “Form 10-K”). COVID-19 Pandemic On March 11, 2020, the World Health Organization recognized an outbreak of a novel strain of the coronavirus, COVID-19, as a pandemic. On March 13, 2020, the President of the Unites States of America (U.S.) declared a national state of emergency. In response to this outbreak, the governments of many states, cities and municipalities in the U.S., including the States of Florida, New York and Texas, have taken preventative or protective actions, such as imposing restrictions on business operations and advising or requiring individuals to limit or forego their time outside of their homes. On March 16, 2020, the Company activated its Business Continuity Plan (“BCP”) to continue to provide its products and services during the COVID-19 pandemic. The Company’s BCP plan is framed within regulatory guidelines and subject to periodic testing and independent audits. All banking centers are open to the public by drive-thru and by appointment-only, under a reduced schedule (except banking centers in Texas which are operating under regular business hours), and with limited staffing. All electronic channels remain fully operational. In addition, the BCP enabled employees to work remotely. On March 27, 2020, the Coronavirus Aid, Relief, and Economic Security Act (“CARES Act”), an approximately $2.0 trillion COVID-19 response bill, to provide emergency economic relief to individuals, small businesses, mid-size companies, large corporations, hospitals and other public health facilities, and state and local governments, was enacted. The CARES Act 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. On April 24, 2020, the Paycheck Protection Program and Health Care Enhancement Act, adding funding to the PPP, was enacted. As of May 1, 2020, the Company had received approval for 1,493 loan applications under the PPP totaling $197.8 million, and had funded $137.9 million. 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. As of May 1, 2020, loans under these programs totaled $1,119 million. In accordance with accounting and regulatory guidance, loans to borrowers benefiting from these measures are not considered Troubled Debt Restructurings (“TDRs”). The Company is closely monitoring the performance of these loans under the terms of the temporary relief granted. b) Basis of Presentation and Summary of Significant Accounting Policies The accompanying unaudited interim consolidated financial statements have been prepared in accordance with U.S. 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 U.S. 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, 2019 and 2018 and for each of the three years in the period ended December 31, 2019 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 Form 10-K. Estimates The preparation of financial statements in conformity with U.S. 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 outbreak has severely restricted the level of economic activity in the U.S. and around the world since March 2020. In the U.S and several other countries, temporary closures of businesses have been ordered and numerous other businesses have temporarily closed voluntarily. These actions have expanded significantly since March 31, 2020 and may continue to expand. The Company considered the impact of COVID-19 on the significant estimates management used. The Company recorded a provision for loan losses of $22.0 million during the three months ended March 31, 2020 primarily as a result of the estimated impact of the COVID-19 pandemic. Given the uncertainty regarding the spread and severity of COVID-19 and its adverse effects on the U.S. and global economies, the extent to which the COVID-19 pandemic may impact the Company’s financial condition or results of operations is uncertain and cannot be accurately predicted at this time. c) Recently Issued Accounting Pronouncements Issued and Not Yet 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 which has not yet been adopted by the Company. 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 and a lease liability for most leases within the scope of the guidance. There were no significant changes to the guidance for lessors. These amendments, and the related pending new guidance, can be adopted using a modified retrospective transition at the beginning of the earliest comparative period presented, and provides for certain practical expedients. In November 2019, the FASB again amended the effective date of the new guidance on leases. Previously, the amendments and related new guidance on leases were effective for fiscal years beginning after December 15, 2019, and interim periods within fiscal years beginning after December 15, 2020, for private companies. The new guidance on leases is now effective for fiscal years beginning after December 15, 2020 and interim periods within fiscal years beginning after December 15, 2021. Early adoption is still permitted. The Company has completed the process of gathering a complete inventory of its lease contracts, migrating identified lease data onto a new system, and is in the final stages of testing and evaluation of results. Based on these results, we currently expect to recognize an asset and a corresponding lease liability for an amount to be less than 1% of the Company’s total consolidated assets at adoption. The Company plans to adopt the new guidance in its consolidated financial statements for the year ending December 31, 2021. Facilitation of the Effects of Reference Rate Reform on Financial Reporting On March 12, 2020, the FASB issued amendments to guidance applicable to contracts, hedging relationships, and other transactions affected that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. These amendments provide optional guidance for a limited period of time to ease the potential burden in accounting for (or recognizing the effects of) reference rate reform on financial reporting. The expedients and exceptions provided by the amendments do not apply to contract modifications made and hedging relationships entered into or evaluated after December 31, 2022, except for hedging relationships existing as of December 31, 2022, that an entity has elected certain optional expedients for and that are retained through the end of the hedging relationship. The amendments also allow entities to make a one-time election to sell, transfer, or both sell and transfer debt securities classified as held to maturity that reference a rate affected by reference rate reform and that are classified as held to maturity before January 1, 2020. These amendments are effective for all entities as of March 12, 2020 through December 31, 2022. An entity may elect to apply these amendments to eligible hedging relationships existing as of the beginning of the interim period that includes March 12, 2020 and to new eligible hedging relationships entered into after the beginning of the interim period that includes March 12, 2020. An entity may elect to apply the amendments for contract modifications as of any date from the beginning of an interim period that includes or is subsequent to March 12, 2020, or prospectively from a date within an interim period that includes or is subsequent to March 12, 2020, up to the date that the financial statements are available to be issued. Once elected, these amendments must be applied prospectively for all eligible contract modifications and hedging relationships. The Company is in the process of evaluating the implications of these amendments to its current efforts for reference rate reform implementation. New Guidance on Accounting for Credit Losses on Financial Instruments In June 2016, the FASB issued the new guidance on accounting for current expected credit losses on financial instruments (“CECL.”) The new guidance introduces an approach based on expected losses to estimate credit losses on various financial instruments, including loans. It also modifies the impairment model for available-for-sale debt securities and provides for a simplified accounting model for purchased financial assets with credit deterioration since their origination. In November 2018, the FASB issued amendments to pending new guidance on CECL to, among other things, align the implementation date for private companies’ annual financial statements with the implementation date for their interim financial statements. Prior to the issuance of these amendments, the guidance on accounting for CECL was effective for private companies for fiscal years beginning after December 15, 2020, and interim periods within fiscal years beginning after December 15, 2021. These amendments are effective for fiscal years beginning after December 15, 2021, and interim periods within those fiscal years, for private companies. In November 2019, the FASB amended the effective date of the new guidance on CECL. Previously, the amendments and related new guidance on CECL was effective for fiscal years beginning after December 15, 2021, and interim periods within those years, for private companies. The new guidance on CECL is now effective for fiscal years beginning after December 15, 2022 and interim periods within those years. Early adoption is still permitted. The new guidance on CECL is effective for fiscal years beginning after December 15, 2019, and interim periods within those years, for public companies. The Company is currently assessing the impact that these changes will have on its consolidated financial statements, when adopted. As an Emerging Growth Company, or EGC, the Company currently plans to adopt the new guidance on CECL in its consolidated financial statements for the year ending December 31, 2023, or earlier in the event the Company ceases to be an EGC. 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, 2020
Cash and Cash Equivalents [Abstract]
Interest Earning Deposits with Banks	Interest Earning Deposits with Banks At March 31, 2020 and December 31, 2019 interest earning deposits with banks are mainly comprised of deposits with the Federal Reserve of approximately $248.8 million and $93 million , respectively. At March 31, 2020 and December 31, 2019, the average interest rate on these deposits was approximately 1.08% and 2.19% , respectively. These deposits mature within one year .

Securities

Securities	3 Months Ended
	Mar. 31, 2020
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, 2020 Amortized Gross Unrealized Estimated (in thousands) Gains Losses U.S. government-sponsored enterprise debt securities $ 844,712 $ 31,188 $ (719 ) $ 875,181 Corporate debt securities 333,359 2,990 (6,155 ) 330,194 U.S. government agency debt securities 251,731 3,828 (2,377 ) 253,182 U.S. treasury securities 73,636 3,689 — 77,325 Municipal bonds 62,203 3,218 — 65,421 $ 1,565,641 $ 44,913 $ (9,251 ) $ 1,601,303 December 31, 2019 Amortized Gross Unrealized Estimated (in thousands) Gains Losses U.S. government sponsored enterprise debt securities $ 927,205 $ 9,702 $ (3,795 ) $ 933,112 Corporate debt securities 247,836 5,002 (2 ) 252,836 U.S. government agency debt securities 230,384 895 (2,882 ) 228,397 U.S. treasury securities 106,112 1 (1,877 ) 104,236 Municipal bonds 47,652 2,519 — 50,171 $ 1,559,189 $ 18,119 $ (8,556 ) $ 1,568,752 At March 31, 2020 and December 31, 2019 , the Company had no foreign sovereign or foreign government agency debt securities. The Company had investments in foreign corporate debt securities of $13.4 million and $5.2 million at March 31, 2020 and December 31, 2019, respectively. In the three months ended March 31, 2020 and 2019, proceeds from sales, gross realized gains, gross realized losses of debt securities available for sale were as follows: Three Months Ended March 31, (in thousands) 2020 2019 Proceeds from sales of debt securities available for sale $ 139,072 $ 112,529 Gross realized gains 9,266 448 Gross realized losses (23 ) (444 ) Realized gains, net $ 9,243 $ 4 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, 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 $ 24,695 $ (132 ) $ 24,553 $ (587 ) $ 49,248 $ (719 ) Corporate debt securities 127,093 (6,155 ) — — 127,093 (6,155 ) U.S. government agency debt securities 18,602 (117 ) 98,645 (2,260 ) 117,247 (2,377 ) $ 170,390 $ (6,404 ) $ 123,198 $ (2,847 ) $ 293,588 $ (9,251 ) December 31, 2019 Less Than 12 Months 12 Months or More Total (in thousands) Estimated Unrealized Estimated Unrealized Estimated Unrealized U.S. government sponsored enterprise debt securities $ 239,446 $ (1,740 ) $ 180,274 $ (2,055 ) $ 419,720 $ (3,795 ) Corporate debt securities 8,359 (1 ) 300 (1 ) 8,659 (2 ) U.S. government agency debt securities 41,300 (251 ) 117,040 (2,631 ) 158,340 (2,882 ) U.S. treasury securities 97,471 (1,877 ) — — 97,471 (1,877 ) $ 386,576 $ (3,869 ) $ 297,614 $ (4,687 ) $ 684,190 $ (8,556 ) At March 31, 2020 and December 31, 2019 , 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 municipal and 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. Contractual maturities of debt securities at March 31, 2020 are as follows: Available for Sale Held to Maturity (in thousands) Amortized Estimated Amortized Estimated Within 1 year $ 103,743 $ 103,995 $ — $ — After 1 year through 5 years 167,055 166,952 — — After 5 years through 10 years 280,460 285,762 11,567 11,793 After 10 years 1,014,383 1,044,594 58,769 59,561 $ 1,565,641 $ 1,601,303 $ 70,336 $ 71,354 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 $24.2 million and $23.8 million as of March 31, 2020 and December 31, 2019, respectively. These equity securities have no stated maturities. During the three months ended March 31, 2020, we recognized an unrealized gain of $0.4 million related to the change in market value of these mutual funds. No gain was recognized during the three months ended March 31, 2019.

Loans

Loans	3 Months Ended
	Mar. 31, 2020
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 $ 1,875,293 $ 1,891,802 Multi-family residential 834,016 801,626 Land development and construction loans 225,179 278,688 2,934,488 2,972,116 Single-family residential 569,340 539,102 Owner occupied 923,260 894,060 4,427,088 4,405,278 Commercial loans 1,084,751 1,234,043 Loans to financial institutions and acceptances 16,576 16,552 Consumer loans and overdrafts 139,912 88,466 $ 5,668,327 $ 5,744,339 At March 31, 2020 and December 31, 2019 , loans with an outstanding principal balance of $1.5 billion and $1.6 billion , respectively, were pledged as collateral to secure advances from the FHLB. The amounts above include loans under syndication facilities of approximately $488 million and $562 million at March 31, 2020 and December 31, 2019 , respectively, which include Shared National Credit facilities and agreements to enter into credit agreements with other lenders (club deals), and other agreements. The following tables summarize international loans by country, net of loans fully collateralized with cash of approximately $14.5 million and $15.2 million at March 31, 2020 and December 31, 2019 , respectively. March 31, 2020 December 31, 2019 (in thousands) Venezuela Others (1) Total Venezuela Others (1) Total Real estate loans Single-family residential (2) $ 97,517 $ 7,571 $ 105,088 $ 103,979 $ 7,692 $ 111,671 Commercial loans — 57,348 57,348 — 43,850 43,850 Loans to financial institutions and acceptances — 8 8 — 5 5 Consumer loans and overdrafts (3)(4) 427 7,688 8,115 8,318 7,593 15,911 $ 97,944 $ 72,615 $ 170,559 $ 112,297 $ 59,140 $ 171,437 __________________ (1) Loans to borrowers in 12 other countries which do not individually exceed 1% of total assets (14 countries at December 31, 2019) (2) Corresponds to mortgage loans secured by single-family residential properties located in the U.S. (3) At December 31, 2019, Venezuela balances are mostly comprised of credit card extensions of credit to customers with deposits with the Bank. The Company phased out its legacy credit card products to further strengthen its credit quality. During the first quarter of 2020, the remaining balances related to the credit card product were repaid, therefore, there are no outstanding credit card balances as of March 31, 2020. (4) Overdrafts to customers outside the United States were de minimis at March 31, 2020 and December 31, 2019 . The age analysis of the loan portfolio by class, including nonaccrual loans, as of March 31, 2020 and December 31, 2019 are summarized in the following tables: March 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 $ 1,875,293 $ 1,875,293 $ — $ — $ — $ — $ 1,936 $ — Multi-family residential 834,016 834,016 — — — — — — Land development and construction loans 225,179 225,179 — — — — — — 2,934,488 2,934,488 — — — — 1,936 — Single-family residential 569,340 557,717 8,438 — 3,185 11,623 7,077 5 Owner occupied 923,260 910,269 9,004 1,208 2,779 12,991 13,897 — 4,427,088 4,402,474 17,442 1,208 5,964 24,614 22,910 5 Commercial loans 1,084,751 1,076,834 5,626 425 1,866 7,917 9,993 — Loans to financial institutions and acceptances 16,576 16,576 — — — — — — Consumer loans and overdrafts 139,912 139,682 170 29 31 230 467 12 $ 5,668,327 $ 5,635,566 $ 23,238 $ 1,662 $ 7,861 $ 32,761 $ 33,370 $ 17 December 31, 2019 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 $ 1,891,802 $ 1,891,801 $ 1 $ — $ — $ 1 $ 1,936 $ — Multi-family residential 801,626 801,626 — — — — — — Land development and construction loans 278,688 278,688 — — — — — — 2,972,116 2,972,115 1 — — 1 1,936 — Single-family residential 539,102 530,399 4,585 1,248 2,870 8,703 7,291 — Owner occupied 894,060 888,158 1,360 1,724 2,818 5,902 14,130 — 4,405,278 4,390,672 5,946 2,972 5,688 14,606 23,357 — Commercial loans 1,234,043 1,226,320 4,418 608 2,697 7,723 9,149 — Loans to financial institutions and acceptances 16,552 16,552 — — — — — — Consumer loans and overdrafts 88,466 88,030 215 176 45 436 416 5 $ 5,744,339 $ 5,721,574 $ 10,579 $ 3,756 $ 8,430 $ 22,765 $ 32,922 $ 5

Allowance for Loan Losses

Allowance for Loan Losses	3 Months Ended
	Mar. 31, 2020
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, 2020 and 2019 , and its allocation by impairment methodology and the related investment in loans, net as of March 31, 2020 and 2019 are summarized in the following tables: 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 Three Months Ended March 31, 2019 (in thousands) Real Estate Commercial Financial Consumer Total Balances at beginning of the period $ 22,778 $ 30,018 $ 445 $ 8,521 $ 61,762 (Reversal of) provision for loan losses (322 ) (31 ) (339 ) 692 — Loans charged-off Domestic — (992 ) — (196 ) (1,188 ) International — (18 ) — (406 ) (424 ) Recoveries — 123 — 49 172 Balances at end of the period $ 22,456 $ 29,100 $ 106 $ 8,660 $ 60,322 Allowance for loan losses by impairment methodology Individually evaluated $ — $ 1,593 $ — $ 1,202 $ 2,795 Collectively evaluated 22,456 27,507 106 7,458 57,527 $ 22,456 $ 29,100 $ 106 $ 8,660 $ 60,322 Investment in loans, net of unearned income Individually evaluated $ 711 $ 12,325 $ — $ 3,392 $ 16,428 Collectively evaluated 3,016,569 2,137,165 27,985 536,291 5,718,010 $ 3,017,280 $ 2,149,490 $ 27,985 $ 539,683 $ 5,734,438 The following is a summary of the recorded investment amount of loan sales by portfolio segment: Three Months Ended March 31, Real Estate Commercial Financial Consumer Total 2020 $ — $ 11,901 $ — $ 1,208 $ 13,109 2019 $ 23,475 $ 126,838 $ — $ 1,864 $ 152,177 The following is a summary of impaired loans as of March 31, 2020 and December 31, 2019 : March 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 $ 1,936 $ — $ 1,936 $ 1,943 $ 1,936 $ 1,157 Multi-family residential — — — 164 — — Land development and construction — — — — — — 1,936 — 1,936 2,107 1,936 1,157 Single-family residential 4,499 2,831 7,330 6,471 7,610 1,071 Owner occupied 1,481 12,470 13,951 11,857 13,791 510 7,916 15,301 23,217 20,435 23,337 2,738 Commercial loans 8,139 1,854 9,993 9,228 10,039 3,528 Consumer loans and overdrafts 470 9 479 270 537 454 $ 16,525 $ 17,164 $ 33,689 $ 29,933 $ 33,913 $ 6,720 _______________ (1) Average using trailing four quarter balances. December 31, 2019 Recorded Investment (in thousands) With a Valuation Allowance Without a Valuation Allowance Total Year Average (1) Total Unpaid Principal Balance Valuation Allowance Real estate loans Commercial real estate Non-owner occupied $ 1,936 $ — $ 1,936 $ 1,459 $ 1,936 $ 1,161 Multi-family residential — — — 342 — — Land development and construction loans — — — — — — 1,936 — 1,936 1,801 1,936 1,161 Single-family residential 4,739 729 5,468 5,564 5,598 946 Owner occupied 6,169 7,906 14,075 9,548 13,974 501 12,844 8,635 21,479 16,913 21,508 2,608 Commercial loans 8,415 13 8,428 8,552 8,476 1,288 Consumer loans and overdrafts 395 9 404 153 402 378 $ 21,654 $ 8,657 $ 30,311 $ 25,618 $ 30,386 $ 4,274 _______________ (1) Average using trailing four quarter balances. There were no new troubled debt restructurings (“TDRs”) during the first quarter of 2020. As of March 31, 2020, TDRs mainly consist of a multiple loan relationship with a South Florida customer including CRE, owner occupied and commercial loans totaling $9.7 million . This TDR consisted of extending repayment terms and adjusting future periodic payments which resulted in no additional reserves. Four residential loans, totaling $2.1 million at March 31, 2020, which are included in this loan relationship, were not modified. The Company believes the specific reserves associated with this loan relationship, which total $3.6 million at March 31, 2020, are adequate to cover probable losses given current facts and circumstances. In the fourth quarter of 2019, this $9.7 million TDR loan relationship did not perform in accordance with the restructured terms. The Company will continue to closely monitor the performance of these loans under their modified terms. Since March 31, 2019, no additional TDRs subsequently defaulted under their modified terms. In addition, during the first quarter of 2020, there were no charge-offs against the allowance for loan losses associated with TDR loans. 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. Consistent with accounting and regulatory guidance, temporary modifications granted under these programs are not considered TDRs. The Company is actively monitoring these loans to permit the proactive identification of negative patterns by industry and/or region and pursuing remediation efforts in a timely manner. While the economic disruption caused by the COVID-19 pandemic is expected to impact the Company's credit quality, it is difficult to estimate the potential outcome due to the uncertain duration and scope of the slowdown in U.S. economic activity. The Company will continue to closely monitor the performance of loans to borrowers in impacted sectors, and will reassess its provisions as conditions evolve. As of May 1, 2020, loans under these programs totaled $1,119 million . The Company is closely monitoring the performance of these loans under the terms of the temporary relief granted. Loans by Credit Quality Indicators Loans by credit quality indicators as of March 31, 2020 and December 31, 2019 are summarized in the following tables: March 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 $ 1,872,600 $ — $ 757 $ 1,936 $ — $ 1,875,293 Multi-family residential 834,016 — — — — 834,016 Land development and construction loans 215,327 9,852 — — — 225,179 2,921,943 9,852 757 1,936 — 2,934,488 Single-family residential 562,258 — 7,082 — — 569,340 Owner occupied 902,065 7,190 14,005 — — 923,260 4,386,266 17,042 21,844 1,936 — 4,427,088 Commercial loans 1,070,062 2,587 9,459 2,643 — 1,084,751 Loans to financial institutions and acceptances 16,576 — — — — 16,576 Consumer loans and overdrafts 139,437 — 41 434 — 139,912 $ 5,612,341 $ 19,629 $ 31,344 $ 5,013 $ — $ 5,668,327 December 31, 2019 Credit Risk Rating Nonclassified Classified (in thousands) Pass Special Mention Substandard Doubtful Loss Total Real estate loans Commercial real estate Non-owner occupied $ 1,879,780 $ 9,324 $ 762 $ 1,936 $ — $ 1,891,802 Multi-family residential 801,626 — — — — 801,626 Land development and construction loans 268,733 9,955 — — — 278,688 2,950,139 19,279 762 1,936 — 2,972,116 Single-family residential 531,811 — 7,291 — — 539,102 Owner occupied 871,682 8,138 14,240 — — 894,060 4,353,632 27,417 22,293 1,936 — 4,405,278 Commercial loans 1,217,399 5,569 8,406 2,669 — 1,234,043 Loans to financial institutions and acceptances 16,552 — — — — 16,552 Consumer loans and overdrafts 88,042 — 67 357 — 88,466 $ 5,675,625 $ 32,986 $ 30,766 $ 4,962 $ — $ 5,744,339

Time Deposits

Time Deposits	3 Months Ended
	Mar. 31, 2020
Banking and Thrift [Abstract]
Time Deposits	Time Deposits Time deposits in denominations of $100,000 or more amounted to approximately $1.5 billion and $1.4 billion at March 31, 2020 and December 31, 2019 , respectively. Time deposits in denominations of more than $250,000 amounted to approximately $796 million and $733 million at March 31, 2020 and December 31, 2019 , respectively. As of March 31, 2020 and December 31, 2019 , brokered time deposits amounted to $647 million and $662 million , respectively.

Advances from the Federal Home

Advances from the Federal Home Loan Bank and Other Borrowings	3 Months Ended
	Mar. 31, 2020
Banking and Thrift [Abstract]
Advances from the Federal Home Loan Bank and Other Borrowings	Advances from the Federal Home Loan Bank and Other Borrowings At March 31, 2020 and December 31, 2019, the Company had outstanding advances from the FHLB and other borrowings as follows: Outstanding Balance Year of Maturity Interest Interest At March 31, 2020 At December 31, 2019 (in thousands) 2020 0.44% to 2.35% Fixed 155,000 135,000 2020 1.73% to 2.03% Variable 60,000 150,000 2021 1.75% to 3.08% Fixed 210,000 210,000 2022 0.65% to 2.80% Fixed 170,000 120,000 2023 and after (1) 0.62% to 3.23% Fixed 670,000 620,000 $ 1,265,000 $ 1,235,000 _______________ (1) As of March 31, 2020 and December 31, 2019, include $530 million (fixed interest rates raging from 0.62% to 0.97% ) in advances from the FHLB that are callable prior to maturity. In early April 2020, the Company restructured $420.0 million of its fixed-rate FHLB advances extending their original maturities from 2021 to 2023 at lower interest rates. The Company incurred a loss of $17.0 million as a result of this restructuring which was blended into the new interest rates of these advances affecting the yields through their remaining maturities. The Company accounted for these transactions as the modification of existing debt in accordance with U.S. GAAP.

Junior Subordinated Debentures

Junior Subordinated Debentures Held by Trust Subsidiaries	3 Months Ended
	Mar. 31, 2020
Debt Disclosure [Abstract]
Junior Subordinated Debentures Held by Trust Subsidiaries	Junior Subordinated Debentures Held by Trust Subsidiaries The following table provides information of the outstanding Trust Preferred Securities issued by, and the junior subordinated debentures issued to, each of the statutory trust subsidiaries as of March 31, 2020 and December 31, 2019 : March 31, 2020 December 31, 2019 (in thousands) Amount of Principal Amount of Principal Year of Annual Rate of Trust Year of Commercebank Capital Trust I $ — $ — $ 26,830 $ 28,068 1998 8.90% 2028 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 $ 89,080 $ 92,246 On January 30, 2020, the Company redeemed all $26.8 million of its outstanding 8.90% trust preferred capital securities issued by Commercebank Capital Trust I (“Capital Trust I”) at a redemption price of 100% . The Company simultaneously redeemed all junior subordinated debentures held by Capital Trust I as part of this redemption transaction. This redemption reduced total cash and cash equivalents by $27.1 million , financial liabilities by $28.1 million , other assets by $3.4 million , and other liabilities by $2.2 million . In addition, the Company recorded a charge of $0.3 million for the unamortized issuance costs. This redemption reduced the Company’s Tier 1 equity capital by a net amount of $24.7 million .

Derivative Instruments

Derivative Instruments	3 Months Ended
	Mar. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments	Derivative Instruments At March 31, 2020 and December 31, 2019 , the fair values of the Company’s derivative instruments were as follows: March 31, 2020 December 31, 2019 (in thousands) Other Assets Other Liabilities Other Assets Other Liabilities Interest rate swaps designated as cash flow hedges $ — $ 1,773 $ 301 $ — Interest rate swaps not designated as hedging instruments: Customers 42,280 — 11,236 527 Third party broker — 42,280 527 11,236 42,280 42,280 11,763 11,763 Interest rate caps not designated as hedging instruments: Customers — 69 — 46 Third party broker 20 — 33 — 20 69 33 46 $ 42,300 $ 44,122 $ 12,097 $ 11,809 No hedge ineffectiveness gains or losses were recognized on derivatives designated as hedging instruments in the three months ended March 31, 2020 and 2019. Derivatives Not Designated as Hedging Instruments Interest Rate Swaps At March 31, 2020 and December 31, 2019 , the Company had 56 and 49 interest rate swap contracts with customers, respectively, with a total notional amount of $406.1 million and $405.2 million , respectively. These instruments involve the payment of fixed-rate amounts in exchange for the Company receiving variable-rate payments over the life of the contract. In addition, at March 31, 2020 and December 31, 2019 , the Company had 56 and 49 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, 2020 and December 31, 2019, the Company had two and three swap participation agreements, respectively, with total notional amounts of approximately $32.0 million and $50.2 million , respectively. The notional amount of these agreements is based on the Company’s pro-rata share of the related interest rate swap contracts. As of March 31, 2020 and December 31, 2019, the fair value of swap participation agreements was not significant. Interest Rate Caps At March 31, 2020 and December 31, 2019 , the Company had 19 and 16 interest rate cap contracts with customers with a total notional amount of $401.8 million and $315.2 million , respectively. These instruments involve the Company making payments if an interest rate exceeds the agreed strike price. In addition, at March 31, 2020 and December 31, 2019 , the Company had 12 and 13 interest rate cap mirror contracts, respectively, with various third party brokers with total notional amounts of $225.7 million and $234.1 million , respectively.

Stock-based Incentive Compensat

Stock-based Incentive Compensation Plan	3 Months Ended
	Mar. 31, 2020
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 2019 annual report on Form 10-K for more information on the 2018 Equity Plan and stock-based compensation awards for the year ended 2019, including restricted stocks and restricted stock units (“RSUs”). Restricted Stock Awards The following table shows the activity of restricted stock awards in the three months ended March 31, 2020: Number of restricted shares Weighted-average grant date fair value Non-vested shares, beginning of year 495,131 $ 13.48 Granted 6,591 15.17 Vested (433 ) 13.58 Forfeited (54,462 ) 13.45 Non-vested shares at March 31, 2020 446,827 $ 13.51 During the three months ended March 31, 2020 and 2019, the Company recorded $0.3 million and $1.5 million , respectively, of compensation expense related to the restricted stock awards. The total unamortized deferred compensation expense of $2.9 million for all unvested restricted stock outstanding at March 31, 2020 will be recognized over a weighted average period of 1.4 years.

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2020
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes The Company uses an estimated annual effective tax rate method in computing its interim tax provision. This effective tax rate is based on forecasted annual consolidated pre-tax income, permanent tax differences and statutory tax rates. Under this method, the tax effect of certain items that do not meet the definition of ordinary income or expense are computed and recognized as discrete items when they occur. The effective combined federal and state tax rates for the three months ended March 31, 2020 and 2019 were 20.83% and 21.49% , 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 (Loss) (“AOCI/AOCL”)	3 Months Ended
	Mar. 31, 2020
Equity [Abstract]
Accumulated Other Comprehensive Income (Loss) (“AOCI/AOCL”)	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, 2020 December 31, 2019 (in thousands) Before Tax Tax Net of Tax Before Tax Tax Net of Tax Net unrealized holding gains on debt securities available for sale $ 35,662 $ (8,718 ) $ 26,944 $ 9,563 $ (2,338 ) $ 7,225 Net unrealized holding gains on interest rate swaps designated as cash flow hedges 5,523 (1,350 ) 4,173 7,953 (1,944 ) $ 6,009 Total AOCI $ 41,185 $ (10,068 ) $ 31,117 $ 17,516 $ (4,282 ) $ 13,234 The components of other comprehensive income for the periods presented is summarized as follows: Three Months Ended March 31, 2020 2019 (in thousands) Before Tax Tax Net of Tax Before Tax Tax Net of Tax Net unrealized holding gains on debt securities available for sale: Change in fair value arising during the period $ 35,342 $ (8,640 ) $ 26,702 $ 21,545 $ (5,267 ) $ 16,278 Reclassification adjustment for net gains included in net income (9,243 ) 2,260 (6,983 ) (4 ) 1 (3 ) 26,099 (6,380 ) 19,719 21,541 (5,266 ) 16,275 Net unrealized holding losses on interest rate swaps designated as cash flow hedges: Change in fair value arising during the period (2,004 ) 490 (1,514 ) (15 ) 4 (11 ) Reclassification adjustment for net interest income included in net income (426 ) 104 (322 ) (329 ) 80 (249 ) (2,430 ) 594 (1,836 ) (344 ) 84 (260 ) Total other comprehensive income $ 23,669 $ (5,786 ) $ 17,883 $ 21,197 $ (5,182 ) $ 16,015

Stockholders_ Equity

Stockholders’ Equity	3 Months Ended
	Mar. 31, 2020
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, 2020 and December 31, 2019 were 28,879,576 and 28,927,576 , respectively. b) Class B Common Stock and Treasury Stock Shares of the Company’s Class B common stock issued as of March 31, 2020 and December 31, 2019 were 13,286,137 and 17,751,053 , respectively. As of March 31, 2020 and December 31, 2019 , there were 13,286,137 shares and 14,218,596 shares, respectively, of Class B common stock outstanding. As of March 31, 2020 , the Company had no shares of common stock held as treasury stock. At December 31, 2019 , the Company had 3,532,457 shares of common stock held as treasury stock under the cost method. On February 14 and February 21, 2020, the Company repurchased an aggregate of 932,459 shares of nonvoting Class B common stock in two privately negotiated transactions (collectively, the “2020 Repurchase”) for $16.00 per share of Class B common stock. The aggregate purchase price for these transactions was approximately $15.2 million , including $0.3 million in broker fees and other expenses. The Company funded the 2020 Repurchase with available cash. In March 2020, Company’s Board of Directors authorized the cancellation of all 4,464,916 shares of Class B Common Stock previously held as treasury stock, including shares repurchased during 2018, 2019 and 2020, effective March 31, 2020.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2020
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and 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. The Company occupies various premises under noncancelable lease agreements expiring through the year 2046. Actual rental expenses may include deferred rents that are recognized as rent expense on a straight line basis. Rent expense under these leases was approximately $1.3 million and $1.6 million for the three months ended March 31, 2020 and 2019 , respectively. Financial instruments whose contract amount represents off-balance sheet credit risk at March 31, 2020 are generally short-term and are as follows: (in thousands) Approximate Commitments to extend credit $ 786,873 Standby letters of credit 15,414 Commercial letters of credit 4,517 $ 806,804

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2020
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, 2020 (in thousands) Quoted Third-Party Internal Total Assets Debt securities available for sale U.S. government sponsored enterprise debt securities $ — $ 875,181 $ — $ 875,181 Corporate debt securities — 330,194 — 330,194 U.S. government agency debt securities — 253,182 — 253,182 Municipal bonds — 65,421 — 65,421 U.S treasury securities — 77,325 — 77,325 — 1,601,303 — 1,601,303 Equity securities with readily determinable fair values not held for trading — 24,225 — 24,225 Bank owned life insurance — 213,266 — 213,266 Derivative instruments — 42,300 — 42,300 $ — $ 1,881,094 $ — $ 1,881,094 Liabilities Derivative instruments $ — $ 44,122 $ — $ 44,122 December 31, 2019 (in thousands) Quoted Third-Party Internal Total Assets Debt securities available for sale U.S. government sponsored enterprise debt securities $ — $ 933,112 $ — $ 933,112 Corporate debt securities — 252,836 — 252,836 U.S. government agency debt securities — 228,397 — 228,397 U.S. treasury securities — 104,236 — 104,236 Municipal bonds — 50,171 — 50,171 — 1,568,752 — 1,568,752 Equity securities with readily determinable fair values not held for trading — 23,848 — 23,848 Bank owned life insurance — 211,852 — 211,852 Derivative instruments — 12,097 — 12,097 $ — $ 1,816,549 $ — $ 1,816,549 Liabilities Derivative instruments $ — $ 11,809 $ — $ 11,809 Assets and Liabilities Measured at Fair Value on a Nonrecurring Basis There were no significant assets or liabilities measured at fair value on a nonrecurring basis at March 31, 2020 and December 31, 2019 . Fair Value of Financial Instruments The estimated fair value of financial instruments where fair value differs from carrying value are as follows: March 31, 2020 December 31, 2019 (in thousands) Carrying Estimated Carrying Estimated Financial assets: Loans $ 2,776,062 $ 2,669,835 $ 2,819,477 $ 2,721,291 Financial liabilities: Time deposits 1,882,048 1,910,249 1,745,735 1,759,347 Advances from the FHLB 1,265,000 1,287,674 1,235,000 1,244,515 Junior subordinated debentures 64,178 60,200 92,246 86,738

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2020
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) 2020 2019 Numerator: Net income available to common stockholders $ 3,382 $ 13,071 Denominator: ` Basic weighted average shares outstanding 42,185 42,755 Dilutive effect of share-based compensation awards 348 159 Diluted weighted average shares outstanding 42,533 42,914 Basic earnings per common share $ 0.08 $ 0.31 Diluted earnings per common share $ 0.08 $ 0.30 As of March 31, 2020 and 2019, potential dilutive instruments consisted of unvested shares of restricted stock and restricted stock units mainly related to the Company’s IPO in 2018, totaling 482,316 and 786,213 , respectively, were included in the diluted earnings per share computation because, when the unamortized deferred compensation cost related to these shares was divided by the average market price per share at those dates, fewer shares would have been purchased than restricted shares assumed issued. Therefore, at those dates, such awards resulted in higher diluted weighted average shares outstanding than basic weighted average shares outstanding, and had a dilutive effect in per share earnings.

Business, Basis of Presentati_2

Business, Basis of Presentation and Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2020
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Basis of Presentation	The accompanying unaudited interim consolidated financial statements have been prepared in accordance with U.S. 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 U.S. 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 U.S. 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.
Recently Issued Accounting Pronouncements	Recently Issued Accounting Pronouncements Issued and Not Yet 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 which has not yet been adopted by the Company. 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 and a lease liability for most leases within the scope of the guidance. There were no significant changes to the guidance for lessors. These amendments, and the related pending new guidance, can be adopted using a modified retrospective transition at the beginning of the earliest comparative period presented, and provides for certain practical expedients. In November 2019, the FASB again amended the effective date of the new guidance on leases. Previously, the amendments and related new guidance on leases were effective for fiscal years beginning after December 15, 2019, and interim periods within fiscal years beginning after December 15, 2020, for private companies. The new guidance on leases is now effective for fiscal years beginning after December 15, 2020 and interim periods within fiscal years beginning after December 15, 2021. Early adoption is still permitted. The Company has completed the process of gathering a complete inventory of its lease contracts, migrating identified lease data onto a new system, and is in the final stages of testing and evaluation of results. Based on these results, we currently expect to recognize an asset and a corresponding lease liability for an amount to be less than 1% of the Company’s total consolidated assets at adoption. The Company plans to adopt the new guidance in its consolidated financial statements for the year ending December 31, 2021. Facilitation of the Effects of Reference Rate Reform on Financial Reporting On March 12, 2020, the FASB issued amendments to guidance applicable to contracts, hedging relationships, and other transactions affected that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. These amendments provide optional guidance for a limited period of time to ease the potential burden in accounting for (or recognizing the effects of) reference rate reform on financial reporting. The expedients and exceptions provided by the amendments do not apply to contract modifications made and hedging relationships entered into or evaluated after December 31, 2022, except for hedging relationships existing as of December 31, 2022, that an entity has elected certain optional expedients for and that are retained through the end of the hedging relationship. The amendments also allow entities to make a one-time election to sell, transfer, or both sell and transfer debt securities classified as held to maturity that reference a rate affected by reference rate reform and that are classified as held to maturity before January 1, 2020. These amendments are effective for all entities as of March 12, 2020 through December 31, 2022. An entity may elect to apply these amendments to eligible hedging relationships existing as of the beginning of the interim period that includes March 12, 2020 and to new eligible hedging relationships entered into after the beginning of the interim period that includes March 12, 2020. An entity may elect to apply the amendments for contract modifications as of any date from the beginning of an interim period that includes or is subsequent to March 12, 2020, or prospectively from a date within an interim period that includes or is subsequent to March 12, 2020, up to the date that the financial statements are available to be issued. Once elected, these amendments must be applied prospectively for all eligible contract modifications and hedging relationships. The Company is in the process of evaluating the implications of these amendments to its current efforts for reference rate reform implementation. New Guidance on Accounting for Credit Losses on Financial Instruments In June 2016, the FASB issued the new guidance on accounting for current expected credit losses on financial instruments (“CECL.”) The new guidance introduces an approach based on expected losses to estimate credit losses on various financial instruments, including loans. It also modifies the impairment model for available-for-sale debt securities and provides for a simplified accounting model for purchased financial assets with credit deterioration since their origination. In November 2018, the FASB issued amendments to pending new guidance on CECL to, among other things, align the implementation date for private companies’ annual financial statements with the implementation date for their interim financial statements. Prior to the issuance of these amendments, the guidance on accounting for CECL was effective for private companies for fiscal years beginning after December 15, 2020, and interim periods within fiscal years beginning after December 15, 2021. These amendments are effective for fiscal years beginning after December 15, 2021, and interim periods within those fiscal years, for private companies. In November 2019, the FASB amended the effective date of the new guidance on CECL. Previously, the amendments and related new guidance on CECL was effective for fiscal years beginning after December 15, 2021, and interim periods within those years, for private companies. The new guidance on CECL is now effective for fiscal years beginning after December 15, 2022 and interim periods within those years. Early adoption is still permitted. The new guidance on CECL is effective for fiscal years beginning after December 15, 2019, and interim periods within those years, for public companies. The Company is currently assessing the impact that these changes will have on its consolidated financial statements, when adopted. As an Emerging Growth Company, or EGC, the Company currently plans to adopt the new guidance on CECL in its consolidated financial statements for the year ending December 31, 2023, or earlier in the event the Company ceases to be an EGC.
Subsequent Events	Subsequent Events The 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, 2020
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, 2020 Amortized Gross Unrealized Estimated (in thousands) Gains Losses U.S. government-sponsored enterprise debt securities $ 844,712 $ 31,188 $ (719 ) $ 875,181 Corporate debt securities 333,359 2,990 (6,155 ) 330,194 U.S. government agency debt securities 251,731 3,828 (2,377 ) 253,182 U.S. treasury securities 73,636 3,689 — 77,325 Municipal bonds 62,203 3,218 — 65,421 $ 1,565,641 $ 44,913 $ (9,251 ) $ 1,601,303 December 31, 2019 Amortized Gross Unrealized Estimated (in thousands) Gains Losses U.S. government sponsored enterprise debt securities $ 927,205 $ 9,702 $ (3,795 ) $ 933,112 Corporate debt securities 247,836 5,002 (2 ) 252,836 U.S. government agency debt securities 230,384 895 (2,882 ) 228,397 U.S. treasury securities 106,112 1 (1,877 ) 104,236 Municipal bonds 47,652 2,519 — 50,171 $ 1,559,189 $ 18,119 $ (8,556 ) $ 1,568,752
Schedule of realized gain (loss)	In the three months ended March 31, 2020 and 2019, proceeds from sales, gross realized gains, gross realized losses of debt securities available for sale were as follows: Three Months Ended March 31, (in thousands) 2020 2019 Proceeds from sales of debt securities available for sale $ 139,072 $ 112,529 Gross realized gains 9,266 448 Gross realized losses (23 ) (444 ) Realized gains, net $ 9,243 $ 4
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, 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 $ 24,695 $ (132 ) $ 24,553 $ (587 ) $ 49,248 $ (719 ) Corporate debt securities 127,093 (6,155 ) — — 127,093 (6,155 ) U.S. government agency debt securities 18,602 (117 ) 98,645 (2,260 ) 117,247 (2,377 ) $ 170,390 $ (6,404 ) $ 123,198 $ (2,847 ) $ 293,588 $ (9,251 ) December 31, 2019 Less Than 12 Months 12 Months or More Total (in thousands) Estimated Unrealized Estimated Unrealized Estimated Unrealized U.S. government sponsored enterprise debt securities $ 239,446 $ (1,740 ) $ 180,274 $ (2,055 ) $ 419,720 $ (3,795 ) Corporate debt securities 8,359 (1 ) 300 (1 ) 8,659 (2 ) U.S. government agency debt securities 41,300 (251 ) 117,040 (2,631 ) 158,340 (2,882 ) U.S. treasury securities 97,471 (1,877 ) — — 97,471 (1,877 ) $ 386,576 $ (3,869 ) $ 297,614 $ (4,687 ) $ 684,190 $ (8,556 )
Schedule of contractual maturities of securities	Contractual maturities of debt securities at March 31, 2020 are as follows: Available for Sale Held to Maturity (in thousands) Amortized Estimated Amortized Estimated Within 1 year $ 103,743 $ 103,995 $ — $ — After 1 year through 5 years 167,055 166,952 — — After 5 years through 10 years 280,460 285,762 11,567 11,793 After 10 years 1,014,383 1,044,594 58,769 59,561 $ 1,565,641 $ 1,601,303 $ 70,336 $ 71,354

Loans (Tables)

Loans (Tables)	3 Months Ended
	Mar. 31, 2020
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 $ 1,875,293 $ 1,891,802 Multi-family residential 834,016 801,626 Land development and construction loans 225,179 278,688 2,934,488 2,972,116 Single-family residential 569,340 539,102 Owner occupied 923,260 894,060 4,427,088 4,405,278 Commercial loans 1,084,751 1,234,043 Loans to financial institutions and acceptances 16,576 16,552 Consumer loans and overdrafts 139,912 88,466 $ 5,668,327 $ 5,744,339 The following tables summarize international loans by country, net of loans fully collateralized with cash of approximately $14.5 million and $15.2 million at March 31, 2020 and December 31, 2019 , respectively. March 31, 2020 December 31, 2019 (in thousands) Venezuela Others (1) Total Venezuela Others (1) Total Real estate loans Single-family residential (2) $ 97,517 $ 7,571 $ 105,088 $ 103,979 $ 7,692 $ 111,671 Commercial loans — 57,348 57,348 — 43,850 43,850 Loans to financial institutions and acceptances — 8 8 — 5 5 Consumer loans and overdrafts (3)(4) 427 7,688 8,115 8,318 7,593 15,911 $ 97,944 $ 72,615 $ 170,559 $ 112,297 $ 59,140 $ 171,437 __________________ (1) Loans to borrowers in 12 other countries which do not individually exceed 1% of total assets (14 countries at December 31, 2019) (2) Corresponds to mortgage loans secured by single-family residential properties located in the U.S. (3) At December 31, 2019, Venezuela balances are mostly comprised of credit card extensions of credit to customers with deposits with the Bank. The Company phased out its legacy credit card products to further strengthen its credit quality. During the first quarter of 2020, the remaining balances related to the credit card product were repaid, therefore, there are no outstanding credit card balances as of March 31, 2020. (4) Overdrafts to customers outside the United States were de minimis at March 31, 2020 and December 31, 2019 .
Schedule of loan portfolio delinquencies	The age analysis of the loan portfolio by class, including nonaccrual loans, as of March 31, 2020 and December 31, 2019 are summarized in the following tables: March 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 $ 1,875,293 $ 1,875,293 $ — $ — $ — $ — $ 1,936 $ — Multi-family residential 834,016 834,016 — — — — — — Land development and construction loans 225,179 225,179 — — — — — — 2,934,488 2,934,488 — — — — 1,936 — Single-family residential 569,340 557,717 8,438 — 3,185 11,623 7,077 5 Owner occupied 923,260 910,269 9,004 1,208 2,779 12,991 13,897 — 4,427,088 4,402,474 17,442 1,208 5,964 24,614 22,910 5 Commercial loans 1,084,751 1,076,834 5,626 425 1,866 7,917 9,993 — Loans to financial institutions and acceptances 16,576 16,576 — — — — — — Consumer loans and overdrafts 139,912 139,682 170 29 31 230 467 12 $ 5,668,327 $ 5,635,566 $ 23,238 $ 1,662 $ 7,861 $ 32,761 $ 33,370 $ 17 December 31, 2019 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 $ 1,891,802 $ 1,891,801 $ 1 $ — $ — $ 1 $ 1,936 $ — Multi-family residential 801,626 801,626 — — — — — — Land development and construction loans 278,688 278,688 — — — — — — 2,972,116 2,972,115 1 — — 1 1,936 — Single-family residential 539,102 530,399 4,585 1,248 2,870 8,703 7,291 — Owner occupied 894,060 888,158 1,360 1,724 2,818 5,902 14,130 — 4,405,278 4,390,672 5,946 2,972 5,688 14,606 23,357 — Commercial loans 1,234,043 1,226,320 4,418 608 2,697 7,723 9,149 — Loans to financial institutions and acceptances 16,552 16,552 — — — — — — Consumer loans and overdrafts 88,466 88,030 215 176 45 436 416 5 $ 5,744,339 $ 5,721,574 $ 10,579 $ 3,756 $ 8,430 $ 22,765 $ 32,922 $ 5

Allowance for Loan Losses (Tabl

Allowance for Loan Losses (Tables)	3 Months Ended
	Mar. 31, 2020
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, 2020 and 2019 , and its allocation by impairment methodology and the related investment in loans, net as of March 31, 2020 and 2019 are summarized in the following tables: 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 Three Months Ended March 31, 2019 (in thousands) Real Estate Commercial Financial Consumer Total Balances at beginning of the period $ 22,778 $ 30,018 $ 445 $ 8,521 $ 61,762 (Reversal of) provision for loan losses (322 ) (31 ) (339 ) 692 — Loans charged-off Domestic — (992 ) — (196 ) (1,188 ) International — (18 ) — (406 ) (424 ) Recoveries — 123 — 49 172 Balances at end of the period $ 22,456 $ 29,100 $ 106 $ 8,660 $ 60,322 Allowance for loan losses by impairment methodology Individually evaluated $ — $ 1,593 $ — $ 1,202 $ 2,795 Collectively evaluated 22,456 27,507 106 7,458 57,527 $ 22,456 $ 29,100 $ 106 $ 8,660 $ 60,322 Investment in loans, net of unearned income Individually evaluated $ 711 $ 12,325 $ — $ 3,392 $ 16,428 Collectively evaluated 3,016,569 2,137,165 27,985 536,291 5,718,010 $ 3,017,280 $ 2,149,490 $ 27,985 $ 539,683 $ 5,734,438 The following is a summary of the recorded investment amount of loan sales by portfolio segment: Three Months Ended March 31, Real Estate Commercial Financial Consumer Total 2020 $ — $ 11,901 $ — $ 1,208 $ 13,109 2019 $ 23,475 $ 126,838 $ — $ 1,864 $ 152,177
Schedule of impaired loans	The following is a summary of impaired loans as of March 31, 2020 and December 31, 2019 : March 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 $ 1,936 $ — $ 1,936 $ 1,943 $ 1,936 $ 1,157 Multi-family residential — — — 164 — — Land development and construction — — — — — — 1,936 — 1,936 2,107 1,936 1,157 Single-family residential 4,499 2,831 7,330 6,471 7,610 1,071 Owner occupied 1,481 12,470 13,951 11,857 13,791 510 7,916 15,301 23,217 20,435 23,337 2,738 Commercial loans 8,139 1,854 9,993 9,228 10,039 3,528 Consumer loans and overdrafts 470 9 479 270 537 454 $ 16,525 $ 17,164 $ 33,689 $ 29,933 $ 33,913 $ 6,720 _______________ (1) Average using trailing four quarter balances. December 31, 2019 Recorded Investment (in thousands) With a Valuation Allowance Without a Valuation Allowance Total Year Average (1) Total Unpaid Principal Balance Valuation Allowance Real estate loans Commercial real estate Non-owner occupied $ 1,936 $ — $ 1,936 $ 1,459 $ 1,936 $ 1,161 Multi-family residential — — — 342 — — Land development and construction loans — — — — — — 1,936 — 1,936 1,801 1,936 1,161 Single-family residential 4,739 729 5,468 5,564 5,598 946 Owner occupied 6,169 7,906 14,075 9,548 13,974 501 12,844 8,635 21,479 16,913 21,508 2,608 Commercial loans 8,415 13 8,428 8,552 8,476 1,288 Consumer loans and overdrafts 395 9 404 153 402 378 $ 21,654 $ 8,657 $ 30,311 $ 25,618 $ 30,386 $ 4,274 _______________ (1) Average using trailing four quarter balances.
Schedule of credit quality indicators	oans by credit quality indicators as of March 31, 2020 and December 31, 2019 are summarized in the following tables: March 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 $ 1,872,600 $ — $ 757 $ 1,936 $ — $ 1,875,293 Multi-family residential 834,016 — — — — 834,016 Land development and construction loans 215,327 9,852 — — — 225,179 2,921,943 9,852 757 1,936 — 2,934,488 Single-family residential 562,258 — 7,082 — — 569,340 Owner occupied 902,065 7,190 14,005 — — 923,260 4,386,266 17,042 21,844 1,936 — 4,427,088 Commercial loans 1,070,062 2,587 9,459 2,643 — 1,084,751 Loans to financial institutions and acceptances 16,576 — — — — 16,576 Consumer loans and overdrafts 139,437 — 41 434 — 139,912 $ 5,612,341 $ 19,629 $ 31,344 $ 5,013 $ — $ 5,668,327 December 31, 2019 Credit Risk Rating Nonclassified Classified (in thousands) Pass Special Mention Substandard Doubtful Loss Total Real estate loans Commercial real estate Non-owner occupied $ 1,879,780 $ 9,324 $ 762 $ 1,936 $ — $ 1,891,802 Multi-family residential 801,626 — — — — 801,626 Land development and construction loans 268,733 9,955 — — — 278,688 2,950,139 19,279 762 1,936 — 2,972,116 Single-family residential 531,811 — 7,291 — — 539,102 Owner occupied 871,682 8,138 14,240 — — 894,060 4,353,632 27,417 22,293 1,936 — 4,405,278 Commercial loans 1,217,399 5,569 8,406 2,669 — 1,234,043 Loans to financial institutions and acceptances 16,552 — — — — 16,552 Consumer loans and overdrafts 88,042 — 67 357 — 88,466 $ 5,675,625 $ 32,986 $ 30,766 $ 4,962 $ — $ 5,744,339

Advances from the Federal Hom_2

Advances from the Federal Home Loan Bank and Other Borrowings (Tables)	3 Months Ended
	Mar. 31, 2020
Banking and Thrift [Abstract]
Schedule of outstanding advances from the FHLB	At March 31, 2020 and December 31, 2019, the Company had outstanding advances from the FHLB and other borrowings as follows: Outstanding Balance Year of Maturity Interest Interest At March 31, 2020 At December 31, 2019 (in thousands) 2020 0.44% to 2.35% Fixed 155,000 135,000 2020 1.73% to 2.03% Variable 60,000 150,000 2021 1.75% to 3.08% Fixed 210,000 210,000 2022 0.65% to 2.80% Fixed 170,000 120,000 2023 and after (1) 0.62% to 3.23% Fixed 670,000 620,000 $ 1,265,000 $ 1,235,000 _______________ (1) As of March 31, 2020 and December 31, 2019, include $530 million (fixed interest rates raging from 0.62% to 0.97% ) in advances from the FHLB that are callable prior to maturity.

Junior Subordinated Debenture_2

Junior Subordinated Debentures Held by Trust Subsidiaries (Tables)	3 Months Ended
	Mar. 31, 2020
Debt Disclosure [Abstract]
Summary of the Outstanding Trust Preferred Securities	The following table provides information of the outstanding Trust Preferred Securities issued by, and the junior subordinated debentures issued to, each of the statutory trust subsidiaries as of March 31, 2020 and December 31, 2019 : March 31, 2020 December 31, 2019 (in thousands) Amount of Principal Amount of Principal Year of Annual Rate of Trust Year of Commercebank Capital Trust I $ — $ — $ 26,830 $ 28,068 1998 8.90% 2028 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 $ 89,080 $ 92,246

Derivative Instruments (Tables)

Derivative Instruments (Tables)	3 Months Ended
	Mar. 31, 2020
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments	At March 31, 2020 and December 31, 2019 , the fair values of the Company’s derivative instruments were as follows: March 31, 2020 December 31, 2019 (in thousands) Other Assets Other Liabilities Other Assets Other Liabilities Interest rate swaps designated as cash flow hedges $ — $ 1,773 $ 301 $ — Interest rate swaps not designated as hedging instruments: Customers 42,280 — 11,236 527 Third party broker — 42,280 527 11,236 42,280 42,280 11,763 11,763 Interest rate caps not designated as hedging instruments: Customers — 69 — 46 Third party broker 20 — 33 — 20 69 33 46 $ 42,300 $ 44,122 $ 12,097 $ 11,809

Stock-based Incentive Compens_2

Stock-based Incentive Compensation Plan (Tables)	3 Months Ended
	Mar. 31, 2020
Share-based Payment Arrangement [Abstract]
Schedule of Share-based Payment Arrangement	The following table shows the activity of restricted stock awards in the three months ended March 31, 2020: Number of restricted shares Weighted-average grant date fair value Non-vested shares, beginning of year 495,131 $ 13.48 Granted 6,591 15.17 Vested (433 ) 13.58 Forfeited (54,462 ) 13.45 Non-vested shares at March 31, 2020 446,827 $ 13.51

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Loss) (“AOCI/AOCL”) (Tables)	3 Months Ended
	Mar. 31, 2020
Equity [Abstract]
Components of AOCL	The components of AOCI are summarized as follows using applicable blended average federal and state tax rates for each period: March 31, 2020 December 31, 2019 (in thousands) Before Tax Tax Net of Tax Before Tax Tax Net of Tax Net unrealized holding gains on debt securities available for sale $ 35,662 $ (8,718 ) $ 26,944 $ 9,563 $ (2,338 ) $ 7,225 Net unrealized holding gains on interest rate swaps designated as cash flow hedges 5,523 (1,350 ) 4,173 7,953 (1,944 ) $ 6,009 Total AOCI $ 41,185 $ (10,068 ) $ 31,117 $ 17,516 $ (4,282 ) $ 13,234
Components of Other Comprehensive Loss	March 31, 2020 December 31, 2019 (in thousands) Before Tax Tax Net of Tax Before Tax Tax Net of Tax Net unrealized holding gains on debt securities available for sale $ 35,662 $ (8,718 ) $ 26,944 $ 9,563 $ (2,338 ) $ 7,225 Net unrealized holding gains on interest rate swaps designated as cash flow hedges 5,523 (1,350 ) 4,173 7,953 (1,944 ) $ 6,009 Total AOCI $ 41,185 $ (10,068 ) $ 31,117 $ 17,516 $ (4,282 ) $ 13,234 The components of other comprehensive income for the periods presented is summarized as follows: Three Months Ended March 31, 2020 2019 (in thousands) Before Tax Tax Net of Tax Before Tax Tax Net of Tax Net unrealized holding gains on debt securities available for sale: Change in fair value arising during the period $ 35,342 $ (8,640 ) $ 26,702 $ 21,545 $ (5,267 ) $ 16,278 Reclassification adjustment for net gains included in net income (9,243 ) 2,260 (6,983 ) (4 ) 1 (3 ) 26,099 (6,380 ) 19,719 21,541 (5,266 ) 16,275 Net unrealized holding losses on interest rate swaps designated as cash flow hedges: Change in fair value arising during the period (2,004 ) 490 (1,514 ) (15 ) 4 (11 ) Reclassification adjustment for net interest income included in net income (426 ) 104 (322 ) (329 ) 80 (249 ) (2,430 ) 594 (1,836 ) (344 ) 84 (260 ) Total other comprehensive income $ 23,669 $ (5,786 ) $ 17,883 $ 21,197 $ (5,182 ) $ 16,015

Commitments and Contingencies (

Commitments and Contingencies (Tables)	3 Months Ended
	Mar. 31, 2020
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, 2020 are generally short-term and are as follows: (in thousands) Approximate Commitments to extend credit $ 786,873 Standby letters of credit 15,414 Commercial letters of credit 4,517 $ 806,804

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2020
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, 2020 (in thousands) Quoted Third-Party Internal Total Assets Debt securities available for sale U.S. government sponsored enterprise debt securities $ — $ 875,181 $ — $ 875,181 Corporate debt securities — 330,194 — 330,194 U.S. government agency debt securities — 253,182 — 253,182 Municipal bonds — 65,421 — 65,421 U.S treasury securities — 77,325 — 77,325 — 1,601,303 — 1,601,303 Equity securities with readily determinable fair values not held for trading — 24,225 — 24,225 Bank owned life insurance — 213,266 — 213,266 Derivative instruments — 42,300 — 42,300 $ — $ 1,881,094 $ — $ 1,881,094 Liabilities Derivative instruments $ — $ 44,122 $ — $ 44,122 December 31, 2019 (in thousands) Quoted Third-Party Internal Total Assets Debt securities available for sale U.S. government sponsored enterprise debt securities $ — $ 933,112 $ — $ 933,112 Corporate debt securities — 252,836 — 252,836 U.S. government agency debt securities — 228,397 — 228,397 U.S. treasury securities — 104,236 — 104,236 Municipal bonds — 50,171 — 50,171 — 1,568,752 — 1,568,752 Equity securities with readily determinable fair values not held for trading — 23,848 — 23,848 Bank owned life insurance — 211,852 — 211,852 Derivative instruments — 12,097 — 12,097 $ — $ 1,816,549 $ — $ 1,816,549 Liabilities Derivative instruments $ — $ 11,809 $ — $ 11,809
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, 2020 December 31, 2019 (in thousands) Carrying Estimated Carrying Estimated Financial assets: Loans $ 2,776,062 $ 2,669,835 $ 2,819,477 $ 2,721,291 Financial liabilities: Time deposits 1,882,048 1,910,249 1,745,735 1,759,347 Advances from the FHLB 1,265,000 1,287,674 1,235,000 1,244,515 Junior subordinated debentures 64,178 60,200 92,246 86,738

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2020
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) 2020 2019 Numerator: Net income available to common stockholders $ 3,382 $ 13,071 Denominator: ` Basic weighted average shares outstanding 42,185 42,755 Dilutive effect of share-based compensation awards 348 159 Diluted weighted average shares outstanding 42,533 42,914 Basic earnings per common share $ 0.08 $ 0.31 Diluted earnings per common share $ 0.08 $ 0.30

Business, Basis of Presentati_3

Business, Basis of Presentation and Summary of Significant Accounting Policies (Details) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020USD ($)subsidiary$ / shares	May 01, 2020USD ($)loan	Apr. 24, 2020USD ($)	Dec. 31, 2019USD ($)$ / shares	Mar. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Class of Stock [Line Items]
Number of subsidiaries | subsidiary	3
Loans, net	$ 5,595,379			$ 5,692,116
Allowance for credit losses	$ 72,948			$ 52,223	$ 60,322	$ 61,762
Subsequent Event | COVID-19
Class of Stock [Line Items]
Loans, net		$ 1,119,000
Allowance for credit losses			$ 22,000
Subsequent Event | COVID-19 | PPP Loan
Class of Stock [Line Items]
Loans, net		$ 137,900
Number of loans approved | loan		1,493
Amount of loans approved		$ 197,800
Maximum | Plan
Class of Stock [Line Items]
Right-of-use asset, percent	1.00%
Operating lease liability, percent	1.00%
Class A common stock
Class of Stock [Line Items]
Common stock, par value (in dollars per share) | $ / shares	$ 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
Amerant Bank, N.A
Class of Stock [Line Items]
Ownership percentage of subsidiary	100.00%

Interest Earning Deposits wit_2

Interest Earning Deposits with Banks (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Cash and Cash Equivalents [Abstract]
Interest earning deposits with banks	$ 248,750	$ 93,289
Average interest rate on deposits with banks	1.08%	2.19%
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, 2020	Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 1,565,641	$ 1,559,189
Gross Unrealized Gains	44,913	18,119
Gross Unrealized Losses	(9,251)	(8,556)
Estimated Fair Value	1,601,303	1,568,752
U.S. government-sponsored enterprise debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	844,712	927,205
Gross Unrealized Gains	31,188	9,702
Gross Unrealized Losses	(719)	(3,795)
Estimated Fair Value	875,181	933,112
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	333,359	247,836
Gross Unrealized Gains	2,990	5,002
Gross Unrealized Losses	(6,155)	(2)
Estimated Fair Value	330,194	252,836
U.S. government agency debt securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	251,731	230,384
Gross Unrealized Gains	3,828	895
Gross Unrealized Losses	(2,377)	(2,882)
Estimated Fair Value	253,182	228,397
U.S. treasury securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	73,636	106,112
Gross Unrealized Gains	3,689	1
Gross Unrealized Losses	0	(1,877)
Estimated Fair Value	77,325	104,236
Municipal bonds
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	62,203	47,652
Gross Unrealized Gains	3,218	2,519
Gross Unrealized Losses	0	0
Estimated Fair Value	$ 65,421	$ 50,171

Securities - Narrative (Details

Securities - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Debt securities available for sale	$ 1,601,303,000		$ 1,568,752,000
Investments	1,769,987,000		1,739,410,000
Equity securities with readily determinable fair value not held for trading	24,225,000		23,848,000
Foreign Corporate Debt Securities
Debt Securities, Available-for-sale [Line Items]
Investments	13,400,000		5,200,000
Mutual funds
Debt Securities, Available-for-sale [Line Items]
Equity securities with readily determinable fair value not held for trading			24,000,000
Unrealized gains	400,000	$ 0
Foreign sovereign debt securities
Debt Securities, Available-for-sale [Line Items]
Debt securities available for sale	$ 0		$ 0

Securities - Gross Realized Gai

Securities - Gross Realized Gains (Losses) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Investments, Debt and Equity Securities [Abstract]
Proceeds from sales of debt securities available for sale	$ 139,072	$ 112,529
Gross realized gains	9,266	448
Gross realized losses	(23)	(444)
Realized gains, net	$ 9,243	$ 4

Securities - Unrealized Loss on

Securities - Unrealized Loss on Available for Sale Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Estimated Fair Value	$ 170,390	$ 386,576
12 Months or More, Estimated Fair Value	123,198	297,614
Total, Estimated Fair Value	293,588	684,190
Less Than 12 Months, Unrealized Loss	(6,404)	(3,869)
12 Months or More, Unrealized Loss	(2,847)	(4,687)
Total, Unrealized Loss	(9,251)	(8,556)
U.S. government-sponsored enterprise debt securities
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Estimated Fair Value	24,695	239,446
12 Months or More, Estimated Fair Value	24,553	180,274
Total, Estimated Fair Value	49,248	419,720
Less Than 12 Months, Unrealized Loss	(132)	(1,740)
12 Months or More, Unrealized Loss	(587)	(2,055)
Total, Unrealized Loss	(719)	(3,795)
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Estimated Fair Value	127,093	8,359
12 Months or More, Estimated Fair Value	0	300
Total, Estimated Fair Value	127,093	8,659
Less Than 12 Months, Unrealized Loss	(6,155)	(1)
12 Months or More, Unrealized Loss	0	(1)
Total, Unrealized Loss	(6,155)	(2)
U.S. government agency debt securities
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Estimated Fair Value	18,602	41,300
12 Months or More, Estimated Fair Value	98,645	117,040
Total, Estimated Fair Value	117,247	158,340
Less Than 12 Months, Unrealized Loss	(117)	(251)
12 Months or More, Unrealized Loss	(2,260)	(2,631)
Total, Unrealized Loss	$ (2,377)	(2,882)
U.S. treasury securities
Debt Securities, Available-for-sale [Line Items]
Less Than 12 Months, Estimated Fair Value		97,471
12 Months or More, Estimated Fair Value		0
Total, Estimated Fair Value		97,471
Less Than 12 Months, Unrealized Loss		(1,877)
12 Months or More, Unrealized Loss		0
Total, Unrealized Loss		$ (1,877)

Securities - Contractual Maturi

Securities - Contractual Maturities on Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Available for Sale, Amortized Cost
Within 1 year	$ 103,743
After 1 year through 5 years	167,055
After 5 years through 10 years	280,460
After 10 years	1,014,383
Amortized Cost	1,565,641	$ 1,559,189
Available for Sale, Estimated Fair Value
Within 1 year	103,995
After 1 year through 5 years	166,952
After 5 years through 10 years	285,762
After 10 years	1,044,594
Estimated Fair Value	1,601,303	1,568,752
Held to Maturity, Amortized Cost
Within 1 year	0
After 1 year through 5 years	0
After 5 years through 10 years	11,567
After 10 years	58,769
Amortized Cost	70,336	$ 73,876
Held to Maturity, Estimated Fair Value
Within 1 year	0
After 1 year through 5 years	0
After 5 years through 10 years	11,793
After 10 years	59,561
Estimated Fair Value	$ 71,354

Loans - Loan Portfolio by Class

Loans - Loan Portfolio by Classes (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 5,668,327	$ 5,744,339	$ 5,734,438
Real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	4,427,088	4,405,278	3,017,280
Real estate loans | Non-owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,875,293	1,891,802
Real estate loans | Multi-family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	834,016	801,626
Real estate loans | Land development and construction loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	225,179	278,688
Real estate loans | Commercial real estate
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	2,934,488	2,972,116
Real estate loans | Single-family residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	569,340	539,102
Real estate loans | Owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	923,260	894,060
Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,084,751	1,234,043	2,149,490
Loans to financial institutions and acceptances
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	16,576	16,552	27,985
Consumer loans and overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 139,912	$ 88,466	$ 539,683

Loans - Narrative (Details)

Loans - Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2020	Dec. 31, 2019
Receivables [Abstract]
Loans pledged as collateral	$ 1,500	$ 1,600
Syndication facilities included in loans	488	562
Cash collateral on loans	$ 14.5	$ 15.2

Loans - Loan Portfolio by Count

Loans - Loan Portfolio by Countries (Details) - USD ($)	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 5,668,327,000	$ 5,744,339,000	$ 5,734,438,000
Credit Cards
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 0
Others | Assets, total | Geographic concentration risk
Accounts, Notes, Loans and Financing Receivable [Line Items]
Concentration risk, percentage	1.00%
International
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 170,559,000	171,437,000
International | Venezuela
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	97,944,000	112,297,000
International | Others
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	72,615,000	59,140,000
Real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	4,427,088,000	4,405,278,000	3,017,280,000
Real estate loans | International
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	105,088,000	111,671,000
Real estate loans | International | Venezuela
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	97,517,000	103,979,000
Real estate loans | International | Others
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	7,571,000	7,692,000
Commercial loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	1,084,751,000	1,234,043,000	2,149,490,000
Commercial loans | International
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	57,348,000	43,850,000
Commercial loans | International | Venezuela
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Commercial loans | International | Others
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	57,348,000	43,850,000
Loans to financial institutions and acceptances
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	16,576,000	16,552,000	27,985,000
Loans to financial institutions and acceptances | International
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	8,000	5,000
Loans to financial institutions and acceptances | International | Venezuela
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	0	0
Loans to financial institutions and acceptances | International | Others
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	8,000	5,000
Consumer loans and overdrafts
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	139,912,000	88,466,000	$ 539,683,000
Consumer loans and overdrafts | International
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	8,115,000	15,911,000
Consumer loans and overdrafts | International | Venezuela
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	427,000	8,318,000
Consumer loans and overdrafts | International | Others
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans	$ 7,688,000	$ 7,593,000

Loans - Loans by Delinquency (D

Loans - Loans by Delinquency (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	$ 5,668,327	$ 5,744,339	$ 5,734,438
Current	5,635,566	5,721,574
Past Due	32,761	22,765
Total Loans in Nonaccrual Status	33,370	32,922
Total Loans 90 Days or More Past Due and Accruing	17	5
30-59 Days
Financing Receivable, Past Due [Line Items]
Past Due	23,238	10,579
60-89 Days
Financing Receivable, Past Due [Line Items]
Past Due	1,662	3,756
Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Past Due	7,861	8,430
Real estate loans
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	4,427,088	4,405,278	3,017,280
Current	4,402,474	4,390,672
Past Due	24,614	14,606
Total Loans in Nonaccrual Status	22,910	23,357
Total Loans 90 Days or More Past Due and Accruing	5	0
Real estate loans | 30-59 Days
Financing Receivable, Past Due [Line Items]
Past Due	17,442	5,946
Real estate loans | 60-89 Days
Financing Receivable, Past Due [Line Items]
Past Due	1,208	2,972
Real estate loans | Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Past Due	5,964	5,688
Real estate loans | Non-owner occupied
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	1,875,293	1,891,802
Current	1,875,293	1,891,801
Past Due	0	1
Total Loans in Nonaccrual Status	1,936	1,936
Total Loans 90 Days or More Past Due and Accruing	0	0
Real estate loans | Non-owner occupied | 30-59 Days
Financing Receivable, Past Due [Line Items]
Past Due	0	1
Real estate loans | Non-owner occupied | 60-89 Days
Financing Receivable, Past Due [Line Items]
Past Due	0	0
Real estate loans | Non-owner occupied | Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Past Due	0	0
Real estate loans | Multi-family residential
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	834,016	801,626
Current	834,016	801,626
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 | Multi-family residential | 30-59 Days
Financing Receivable, Past Due [Line Items]
Past Due	0	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	225,179	278,688
Current	225,179	278,688
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	2,934,488	2,972,116
Current	2,934,488	2,972,115
Past Due	0	1
Total Loans in Nonaccrual Status	1,936	1,936
Total Loans 90 Days or More Past Due and Accruing	0	0
Real estate loans | Commercial real estate | 30-59 Days
Financing Receivable, Past Due [Line Items]
Past Due	0	1
Real estate loans | Commercial real estate | 60-89 Days
Financing Receivable, Past Due [Line Items]
Past Due	0	0
Real estate loans | Commercial real estate | Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Past Due	0	0
Real estate loans | Single-family residential
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	569,340	539,102
Current	557,717	530,399
Past Due	11,623	8,703
Total Loans in Nonaccrual Status	7,077	7,291
Total Loans 90 Days or More Past Due and Accruing	5	0
Real estate loans | Single-family residential | 30-59 Days
Financing Receivable, Past Due [Line Items]
Past Due	8,438	4,585
Real estate loans | Single-family residential | 60-89 Days
Financing Receivable, Past Due [Line Items]
Past Due	0	1,248
Real estate loans | Single-family residential | Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Past Due	3,185	2,870
Real estate loans | Owner occupied
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	923,260	894,060
Current	910,269	888,158
Past Due	12,991	5,902
Total Loans in Nonaccrual Status	13,897	14,130
Total Loans 90 Days or More Past Due and Accruing	0	0
Real estate loans | Owner occupied | 30-59 Days
Financing Receivable, Past Due [Line Items]
Past Due	9,004	1,360
Real estate loans | Owner occupied | 60-89 Days
Financing Receivable, Past Due [Line Items]
Past Due	1,208	1,724
Real estate loans | Owner occupied | Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Past Due	2,779	2,818
Commercial loans
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	1,084,751	1,234,043	2,149,490
Current	1,076,834	1,226,320
Past Due	7,917	7,723
Total Loans in Nonaccrual Status	9,993	9,149
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	5,626	4,418
Commercial loans | 60-89 Days
Financing Receivable, Past Due [Line Items]
Past Due	425	608
Commercial loans | Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Past Due	1,866	2,697
Loans to financial institutions and acceptances
Financing Receivable, Past Due [Line Items]
Total Loans, Net of Unearned Income	16,576	16,552	27,985
Current	16,576	16,552
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	139,912	88,466	$ 539,683
Current	139,682	88,030
Past Due	230	436
Total Loans in Nonaccrual Status	467	416
Total Loans 90 Days or More Past Due and Accruing	12	5
Consumer loans and overdrafts | 30-59 Days
Financing Receivable, Past Due [Line Items]
Past Due	170	215
Consumer loans and overdrafts | 60-89 Days
Financing Receivable, Past Due [Line Items]
Past Due	29	176
Consumer loans and overdrafts | Greater than 90 Days
Financing Receivable, Past Due [Line Items]
Past Due	$ 31	$ 45

Allowance for Loan Losses - All

Allowance for Loan Losses - Allowances by Loan Segment (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019	Dec. 31, 2019
Allowance for Credit Losses
Balances at beginning of the period	$ 52,223	$ 61,762
(Reversal of) provision for loan losses	22,000	0
Recoveries	333	172
Balances at end of the period	72,948	60,322
Allowance for loan losses by impairment methodology, Individually evaluated	6,720	2,795
Allowance for loan losses by impairment methodology, Collectively evaluated	66,228	57,527
Investment in loans, net of unearned income, Individually evaluated	33,689	16,428
Investment in loans, net of unearned income, Collectively evaluated	5,634,638	5,718,010
Total Loans, Net of Unearned Income	5,668,327	5,734,438	$ 5,744,339
Domestic
Allowance for Credit Losses
Loans charged-off	(1,323)	(1,188)
International
Allowance for Credit Losses
Loans charged-off	(285)	(424)
Total Loans, Net of Unearned Income	170,559		171,437
Real Estate
Allowance for Credit Losses
Balances at beginning of the period	25,040	22,778
(Reversal of) provision for loan losses	11,390	(322)
Recoveries	0	0
Balances at end of the period	36,430	22,456
Allowance for loan losses by impairment methodology, Individually evaluated	1,157	0
Allowance for loan losses by impairment methodology, Collectively evaluated	35,273	22,456
Investment in loans, net of unearned income, Individually evaluated		711
Investment in loans, net of unearned income, Collectively evaluated		3,016,569
Total Loans, Net of Unearned Income	4,427,088	3,017,280	4,405,278
Real Estate | Financing Receivable
Allowance for Credit Losses
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	2,933,836
Real Estate | Domestic
Allowance for Credit Losses
Loans charged-off	0	0
Real Estate | International
Allowance for Credit Losses
Loans charged-off	0	0
Total Loans, Net of Unearned Income	105,088		111,671
Commercial
Allowance for Credit Losses
Balances at beginning of the period	22,482	30,018
(Reversal of) provision for loan losses	7,530	(31)
Recoveries	185	123
Balances at end of the period	29,062	29,100
Allowance for loan losses by impairment methodology, Individually evaluated	4,038	1,593
Allowance for loan losses by impairment methodology, Collectively evaluated	25,024	27,507
Investment in loans, net of unearned income, Individually evaluated		12,325
Investment in loans, net of unearned income, Collectively evaluated		2,137,165
Total Loans, Net of Unearned Income	1,084,751	2,149,490	1,234,043
Commercial | Financing Receivable
Allowance for Credit Losses
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	2,128,452
Commercial | Domestic
Allowance for Credit Losses
Loans charged-off	(1,101)	(992)
Commercial | International
Allowance for Credit Losses
Loans charged-off	(34)	(18)
Total Loans, Net of Unearned Income	57,348		43,850
Financial Institutions
Allowance for Credit Losses
Balances at beginning of the period	42	445
(Reversal of) provision for loan losses	0	(339)
Recoveries	0	0
Balances at end of the period	42	106
Allowance for loan losses by impairment methodology, Individually evaluated	0	0
Allowance for loan losses by impairment methodology, Collectively evaluated	42	106
Investment in loans, net of unearned income, Individually evaluated		0
Investment in loans, net of unearned income, Collectively evaluated		27,985
Total Loans, Net of Unearned Income	16,576	27,985	16,552
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	16,576
Total Loans, Net of Unearned Income	16,576
Financial Institutions | Domestic
Allowance for Credit Losses
Loans charged-off	0	0
Financial Institutions | International
Allowance for Credit Losses
Loans charged-off	0	0
Total Loans, Net of Unearned Income	8		5
Consumer and others
Allowance for Credit Losses
Balances at beginning of the period	4,659	8,521
(Reversal of) provision for loan losses	3,080	692
Recoveries	148	49
Balances at end of the period	7,414	8,660
Allowance for loan losses by impairment methodology, Individually evaluated	1,525	1,202
Allowance for loan losses by impairment methodology, Collectively evaluated	5,889	7,458
Investment in loans, net of unearned income, Individually evaluated		3,392
Investment in loans, net of unearned income, Collectively evaluated		536,291
Total Loans, Net of Unearned Income	139,912	539,683	88,466
Consumer and others | Financing Receivable
Allowance for Credit Losses
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	589,463
Consumer and others | Domestic
Allowance for Credit Losses
Loans charged-off	(222)	(196)
Consumer and others | International
Allowance for Credit Losses
Loans charged-off	(251)	$ (406)
Total Loans, Net of Unearned Income	$ 8,115		$ 15,911

Allowance for Loan Losses - Rec

Allowance for Loan Losses - Recorded Investment of Loan Sales (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Financing Receivable, Impaired [Line Items]
Amount of loan sales	$ 13,109	$ 152,177
Real Estate
Financing Receivable, Impaired [Line Items]
Amount of loan sales	0	23,475
Commercial
Financing Receivable, Impaired [Line Items]
Amount of loan sales	11,901	126,838
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	$ 1,208	$ 1,864

Allowance for Loan Losses - Imp

Allowance for Loan Losses - Impaired Loans (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Financing Receivable, Impaired [Line Items]
Recorded Investment, With a Valuation Allowance	$ 16,525	$ 21,654
Recorded Investment, Without a Valuation Allowance	17,164	8,657
Recorded Investment, Total	33,689	30,311
Year Average	29,933	25,618
Total Unpaid Principal Balance	33,913	30,386
Valuation Allowance	6,720	4,274
Real estate loans
Financing Receivable, Impaired [Line Items]
Recorded Investment, With a Valuation Allowance	7,916	12,844
Recorded Investment, Without a Valuation Allowance	15,301	8,635
Recorded Investment, Total	23,217	21,479
Year Average	20,435	16,913
Total Unpaid Principal Balance	23,337	21,508
Valuation Allowance	2,738	2,608
Real estate loans | Non-owner occupied
Financing Receivable, Impaired [Line Items]
Recorded Investment, With a Valuation Allowance	1,936	1,936
Recorded Investment, Without a Valuation Allowance	0	0
Recorded Investment, Total	1,936	1,936
Year Average	1,943	1,459
Total Unpaid Principal Balance	1,936	1,936
Valuation Allowance	1,157	1,161
Real estate loans | Multi-family residential
Financing Receivable, Impaired [Line Items]
Recorded Investment, With a Valuation Allowance	0	0
Recorded Investment, Without a Valuation Allowance	0	0
Recorded Investment, Total	0	0
Year Average	164	342
Total Unpaid Principal Balance	0	0
Valuation Allowance	0	0
Real estate loans | Land development and construction loans
Financing Receivable, Impaired [Line Items]
Recorded Investment, With a Valuation Allowance	0	0
Recorded Investment, Without a Valuation Allowance	0	0
Recorded Investment, Total	0	0
Year Average	0	0
Total Unpaid Principal Balance	0	0
Valuation Allowance	0	0
Real estate loans | Commercial real estate
Financing Receivable, Impaired [Line Items]
Recorded Investment, With a Valuation Allowance	1,936	1,936
Recorded Investment, Without a Valuation Allowance	0	0
Recorded Investment, Total	1,936	1,936
Year Average	2,107	1,801
Total Unpaid Principal Balance	1,936	1,936
Valuation Allowance	1,157	1,161
Real estate loans | Single-family residential
Financing Receivable, Impaired [Line Items]
Recorded Investment, With a Valuation Allowance	4,499	4,739
Recorded Investment, Without a Valuation Allowance	2,831	729
Recorded Investment, Total	7,330	5,468
Year Average	6,471	5,564
Total Unpaid Principal Balance	7,610	5,598
Valuation Allowance	1,071	946
Real estate loans | Owner occupied
Financing Receivable, Impaired [Line Items]
Recorded Investment, With a Valuation Allowance	1,481	6,169
Recorded Investment, Without a Valuation Allowance	12,470	7,906
Recorded Investment, Total	13,951	14,075
Year Average	11,857	9,548
Total Unpaid Principal Balance	13,791	13,974
Valuation Allowance	510	501
Commercial loans
Financing Receivable, Impaired [Line Items]
Recorded Investment, With a Valuation Allowance	8,139	8,415
Recorded Investment, Without a Valuation Allowance	1,854	13
Recorded Investment, Total	9,993	8,428
Year Average	9,228	8,552
Total Unpaid Principal Balance	10,039	8,476
Valuation Allowance	3,528	1,288
Consumer loans and overdrafts
Financing Receivable, Impaired [Line Items]
Recorded Investment, With a Valuation Allowance	470	395
Recorded Investment, Without a Valuation Allowance	9	9
Recorded Investment, Total	479	404
Year Average	270	153
Total Unpaid Principal Balance	537	402
Valuation Allowance	$ 454	$ 378

Allowance for Loan Losses - Nar

Allowance for Loan Losses - Narrative (Details)	3 Months Ended
	Mar. 31, 2020USD ($)contract	May 01, 2020USD ($)	Dec. 31, 2019USD ($)
Financing Receivable, Impaired [Line Items]
Recorded investment	$ 33,689,000		$ 30,311,000
Loans, net	$ 5,595,379,000		5,692,116,000
TDRs subsequently defaulted | contract	0
Charge off against Allowance for loan losses	$ 0
Subsequent Event | COVID-19
Financing Receivable, Impaired [Line Items]
Loans, net		$ 1,119,000,000
Real estate loans
Financing Receivable, Impaired [Line Items]
Recorded investment	9,700,000		9,700,000
Recorded investment	23,217,000		21,479,000
Real estate loans | Residential Loans
Financing Receivable, Impaired [Line Items]
Recorded investment	$ 2,100,000
Number of contracts | contract	4
Real estate loans | Owner occupied
Financing Receivable, Impaired [Line Items]
Recorded investment	$ 13,951,000		$ 14,075,000
Real Estate and Commercial | Owner occupied
Financing Receivable, Impaired [Line Items]
Recorded investment	$ 3,600,000

Allowance for Loan Losses - Cre

Allowance for Loan Losses - Credit Risk Quality (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019	Mar. 31, 2019
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	$ 5,668,327	$ 5,744,339	$ 5,734,438
Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	5,612,341	5,675,625
Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	19,629	32,986
Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	31,344	30,766
Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	5,013	4,962
Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0	0
Real estate loans
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	4,427,088	4,405,278	3,017,280
Real estate loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	4,386,266	4,353,632
Real estate loans | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	17,042	27,417
Real estate loans | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	21,844	22,293
Real estate loans | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	1,936	1,936
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	1,875,293	1,891,802
Real estate loans | Non-owner occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	1,872,600	1,879,780
Real estate loans | Non-owner occupied | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0	9,324
Real estate loans | Non-owner occupied | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	757	762
Real estate loans | Non-owner occupied | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	1,936	1,936
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	834,016	801,626
Real estate loans | Multi-family residential | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	834,016	801,626
Real estate loans | Multi-family residential | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0	0
Real estate loans | Multi-family residential | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0	0
Real estate loans | Multi-family residential | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0	0
Real estate loans | Multi-family residential | Loss
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	0	0
Real estate loans | Land development and construction loans
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	225,179	278,688
Real estate loans | Land development and construction loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	215,327	268,733
Real estate loans | Land development and construction loans | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	9,852	9,955
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	2,934,488	2,972,116
Real estate loans | Commercial real estate | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	2,921,943	2,950,139
Real estate loans | Commercial real estate | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	9,852	19,279
Real estate loans | Commercial real estate | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	757	762
Real estate loans | Commercial real estate | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	1,936	1,936
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	569,340	539,102
Real estate loans | Single-family residential | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	562,258	531,811
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	7,082	7,291
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	923,260	894,060
Real estate loans | Owner occupied | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	902,065	871,682
Real estate loans | Owner occupied | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	7,190	8,138
Real estate loans | Owner occupied | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	14,005	14,240
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	1,084,751	1,234,043	2,149,490
Commercial loans | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	1,070,062	1,217,399
Commercial loans | Special Mention
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	2,587	5,569
Commercial loans | Substandard
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	9,459	8,406
Commercial loans | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	2,643	2,669
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	16,576	16,552	27,985
Loans to financial institutions and acceptances | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	16,576	16,552
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	139,912	88,466	$ 539,683
Consumer loans and overdrafts | Pass
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	139,437	88,042
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	41	67
Consumer loans and overdrafts | Doubtful
Financing Receivable, Credit Quality Indicator [Line Items]
Loans	434	357
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, 2020	Dec. 31, 2019
Banking and Thrift [Abstract]
Time deposits, $100,000 or more	$ 1,500	$ 1,400
Time deposits, $250,000 or more	796	733
Brokered time deposits	$ 647	$ 662

Advances from the Federal Hom_3

Advances from the Federal Home Loan Bank and Other Borrowings (Details) - USD ($) $ in Thousands	Apr. 01, 2020	Mar. 31, 2020	Dec. 31, 2019
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
2020		$ 155,000
2020			$ 135,000
2020, Variable		60,000
2020, Variable			150,000
2021		210,000	210,000
2022		170,000	120,000
2023		670,000	620,000
Advances from Federal Home Loan Banks		1,265,000	1,235,000
Loss on Advances from Federal Home Loan Banks with modified maturities	$ 17,000
Subsequent Event
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Advances from Federal Home Loan Banks with modified maturities	$ 420,000
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 2020		0.44%
Interest Rate 2020, Variable		1.73%
Interest Rate 2021		1.75%
Interest Rate 2022		0.65%
Interest Rate 2023		0.62%
3-month LIBOR | Maximum
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Interest Rate 2020		2.35%
Interest Rate 2020, Variable		2.03%
Interest Rate 2021		3.08%
Interest Rate 2022		2.80%
Interest Rate 2023		3.23%

Junior Subordinated Debenture_3

Junior Subordinated Debentures Held by Trust Subsidiaries - Outstanding Securities (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Dec. 31, 2019
Debt Instrument [Line Items]
Amount of Trust Preferred Securities Issued by Trust	$ 62,250	$ 89,080
Principal Amount of Debenture Issued to Trust	64,178	92,246
Commercebank Capital Trust I | Junior Subordinated Notes, Maturing 2028 | Junior Subordinated Debt
Debt Instrument [Line Items]
Principal Amount of Debenture Issued to Trust	$ 0	28,068
Annual Rate of Trust Preferred Securities and Debentures	8.90%
Commercebank Capital Trust VI | Junior Subordinated Notes, Maturing 2033 | Junior Subordinated Debt
Debt Instrument [Line Items]
Principal Amount of Debenture Issued to Trust	$ 9,537	9,537
Commercebank Capital Trust VI | Junior Subordinated Notes, Maturing 2033 | Junior Subordinated Debt | 3-M LIBOR
Debt Instrument [Line Items]
Annual Rate of Trust Preferred Securities and Debentures	3.35%
Commercebank Capital Trust VII | Junior Subordinated Notes, Maturing 2033 | Junior Subordinated Debt
Debt Instrument [Line Items]
Principal Amount of Debenture Issued to Trust	$ 8,248	8,248
Commercebank Capital Trust VII | Junior Subordinated Notes, Maturing 2033 | Junior Subordinated Debt | 3-M LIBOR
Debt Instrument [Line Items]
Annual Rate of Trust Preferred Securities and Debentures	3.25%
Commercebank Capital Trust VIII | Junior Subordinated Notes, Maturing 2034 | Junior Subordinated Debt
Debt Instrument [Line Items]
Principal Amount of Debenture Issued to Trust	$ 5,155	5,155
Commercebank Capital Trust VIII | Junior Subordinated Notes, Maturing 2034 | Junior Subordinated Debt | 3-M LIBOR
Debt Instrument [Line Items]
Annual Rate of Trust Preferred Securities and Debentures	2.85%
Commercebank Capital Trust IX | Junior Subordinated Notes, Maturing 2038 | Junior Subordinated Debt
Debt Instrument [Line Items]
Principal Amount of Debenture Issued to Trust	$ 25,774	25,774
Commercebank Capital Trust IX | Junior Subordinated Notes, Maturing 2038 | Junior Subordinated Debt | 3-M LIBOR
Debt Instrument [Line Items]
Annual Rate of Trust Preferred Securities and Debentures	1.75%
Commercebank Capital Trust X | Junior Subordinated Notes, Maturing 2036 | Junior Subordinated Debt
Debt Instrument [Line Items]
Principal Amount of Debenture Issued to Trust	$ 15,464	15,464
Commercebank Capital Trust X | Junior Subordinated Notes, Maturing 2036 | Junior Subordinated Debt | 3-M LIBOR
Debt Instrument [Line Items]
Annual Rate of Trust Preferred Securities and Debentures	1.78%
Commercebank Capital Trust I | Junior Subordinated Notes, Maturing 2028
Debt Instrument [Line Items]
Amount of Trust Preferred Securities Issued by Trust	$ 0	26,830
Commercebank Capital Trust VI | Junior Subordinated Notes, Maturing 2033
Debt Instrument [Line Items]
Amount of Trust Preferred Securities Issued by Trust	9,250	9,250
Commercebank Capital Trust VII | Junior Subordinated Notes, Maturing 2033
Debt Instrument [Line Items]
Amount of Trust Preferred Securities Issued by Trust	8,000	8,000
Commercebank Capital Trust VIII | Junior Subordinated Notes, Maturing 2034
Debt Instrument [Line Items]
Amount of Trust Preferred Securities Issued by Trust	5,000	5,000
Commercebank Capital Trust IX | Junior Subordinated Notes, Maturing 2038
Debt Instrument [Line Items]
Amount of Trust Preferred Securities Issued by Trust	25,000	25,000
Commercebank Capital Trust X | Junior Subordinated Notes, Maturing 2036
Debt Instrument [Line Items]
Amount of Trust Preferred Securities Issued by Trust	$ 15,000	$ 15,000

Junior Subordinated Debenture_4

Junior Subordinated Debentures Held by Trust Subsidiaries - Narrative (Details) $ in Millions	Jan. 30, 2020USD ($)
Trust Redemption
Debt Instrument [Line Items]
Decrease in cash and cash equivalents	$ 27.1
Decrease in financing liabilities	28.1
Decrease in other assets	3.4
Decrease in other liabilities	2.2
Unamortized issuance costs	0.3
Decrease in Company’s Tier 1 equity capital	24.7
8.90% Trust Preferred Securities
Debt Instrument [Line Items]
Preferred stock, redemption amount	$ 26.8
Interest rate, stated percentage	8.90%
Contractual call price	100.00%

Derivative Instruments - Schedu

Derivative Instruments - Schedule of Derivatives (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Other Assets
Derivatives, Fair Value [Line Items]
Derivative asset	$ 42,300	$ 12,097
Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative liability	44,122	11,809
Derivatives Designated as Hedging Instruments | Interest Rate Swap Contracts | Other Assets
Derivatives, Fair Value [Line Items]
Derivative asset	0	301
Derivatives Designated as Hedging Instruments | Interest Rate Swap Contracts | Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative liability	1,773	0
Derivatives Not Designated as Hedging Instruments | Interest Rate Swap Contracts | Other Assets
Derivatives, Fair Value [Line Items]
Derivative asset	42,280	11,763
Derivatives Not Designated as Hedging Instruments | Interest Rate Swap Contracts | Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative liability	42,280	11,763
Derivatives Not Designated as Hedging Instruments | Interest Rate Swap Contracts | Customers | Other Assets
Derivatives, Fair Value [Line Items]
Derivative asset	42,280	11,236
Derivatives Not Designated as Hedging Instruments | Interest Rate Swap Contracts | Customers | Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative liability	0	527
Derivatives Not Designated as Hedging Instruments | Interest Rate Swap Contracts | Third Party Broker | Other Assets
Derivatives, Fair Value [Line Items]
Derivative asset	0	527
Derivatives Not Designated as Hedging Instruments | Interest Rate Swap Contracts | Third Party Broker | Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative liability	42,280	11,236
Derivatives Not Designated as Hedging Instruments | Interest Rate Cap Contracts | Other Assets
Derivatives, Fair Value [Line Items]
Derivative asset	20	33
Derivatives Not Designated as Hedging Instruments | Interest Rate Cap Contracts | Other Liabilities
Derivatives, Fair Value [Line Items]
Derivative liability	69	46
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	69	46
Derivatives Not Designated as Hedging Instruments | Interest Rate Cap Contracts | Third Party Broker | Other Assets
Derivatives, Fair Value [Line Items]
Derivative asset	20	33
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
	Mar. 31, 2020USD ($)instrument	Mar. 31, 2019USD ($)	Dec. 31, 2019USD ($)instrument
Derivatives, Fair Value [Line Items]
Derivative, Net Hedge Ineffectiveness Gain (Loss) | $	$ 0	$ 0
Derivatives Not Designated as Hedging Instruments | Interest Rate Swap Contracts | Customers
Derivatives, Fair Value [Line Items]
Number of instruments held | instrument	56		49
Notional amount | $	$ 406,100,000		$ 405,200,000
Derivatives Not Designated as Hedging Instruments | Interest Rate Swap Contracts | Third Party Broker
Derivatives, Fair Value [Line Items]
Number of instruments held | instrument	56		49
Derivatives Not Designated as Hedging Instruments | Credit Risk Contract
Derivatives, Fair Value [Line Items]
Number of instruments held | instrument	2		3
Notional amount | $	$ 32,000,000		$ 50,200,000
Derivatives Not Designated as Hedging Instruments | Interest Rate Cap Contracts | Customers
Derivatives, Fair Value [Line Items]
Number of instruments held | instrument	19		16
Notional amount | $	$ 401,800,000		$ 315,200,000
Derivatives Not Designated as Hedging Instruments | Interest Rate Cap Contracts | Third Party Broker
Derivatives, Fair Value [Line Items]
Number of instruments held | instrument	12		13
Notional amount | $	$ 225,700,000		$ 234,100,000

Stock-based Incentive Compens_3

Stock-based Incentive Compensation Plan - Restricted Stock (Details) - Restricted Stock	3 Months Ended
	Mar. 31, 2020$ / sharesshares
Number of restricted shares (in shares)
Non-vested shares, beginning of year (in shares) | shares	495,131
Grants in period (in shares) | shares	6,591
Vested (in shares) | shares	(433)
Forfeited (in shares) | shares	(54,462)
Non-vested shares, end of year (in shares) | shares	446,827
Weighted-average grant date fair value (in dollars per share)
Non-vested shares, beginning of year (in dollars per share) | $ / shares	$ 13.48
Granted, Weighted average grant date fair value (in dollars per share) | $ / shares	15.17
Vested, Weighted average grant date fair value (in dollars per share) | $ / shares	13.58
Forfeited, Weighted average grant date fair value (in dollars per share) | $ / shares	13.45
Non-vested shares, end of year (in dollars per share) | $ / shares	$ 13.51

Stock-based Incentive Compens_4

Stock-based Incentive Compensation Plan - Additional Information (Details) - Restricted Stock - Class A common stock - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Defined Contribution Plan Disclosure [Line Items]
Share-based compensation expense	$ 0.3	$ 1.5
Nonvested awards, compensation not yet recognized	$ 2.9
Nonvested awards, compensation cost not yet recognized, period	1 year 4 months 24 days

Income Taxes (Details)

Income Taxes (Details)	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Income Tax Disclosure [Abstract]
Effective income tax rate	20.83%	21.49%

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Loss) (“AOCI/AOCL”) - Componenets of AOCL (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Accumulated Other Comprehensive Income (Loss) [Line Items]
Before Tax Amount	$ 41,185	$ 17,516
Tax Effect	(10,068)	(4,282)
Net of Tax Amount	31,117	13,234
Net unrealized holding gains on debt securities available for sale
Accumulated Other Comprehensive Income (Loss) [Line Items]
Before Tax Amount	35,662	9,563
Tax Effect	(8,718)	(2,338)
Net of Tax Amount	26,944	7,225
Net unrealized holding gains on interest rate swaps designated as cash flow hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Before Tax Amount	5,523	7,953
Tax Effect	(1,350)	(1,944)
Net of Tax Amount	$ 4,173	$ 6,009

Accumulated Other Comprehensi_4

Accumulated Other Comprehensive Income (Loss) (“AOCI/AOCL”) - Components of Other Comprehensive Loss (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Before Tax Amount
Total other comprehensive (loss) income, Before Tax Amount	$ 23,669	$ 21,197
Tax Effect
Total other comprehensive (loss) income, Tax Effect	(5,786)	(5,182)
Net of Tax Amount
Reclassification adjustment for net gains (losses) included in net income, Net of Tax Amount	(7,305)	(252)
Other comprehensive income	17,883	16,015
Net unrealized holding gains on debt securities available for sale:
Before Tax Amount
Change in fair value arising during the period, Before Tax Amount	35,342	21,545
Reclassification adjustment for net gains (losses) included in net income, Before Tax Amount	(9,243)	(4)
Total other comprehensive (loss) income, Before Tax Amount	26,099	21,541
Tax Effect
Change in fair value arising during the period, Tax Effect	(8,640)	(5,267)
Reclassification adjustment for net gains (losses) included in net income, Tax Effect	2,260	1
Total other comprehensive (loss) income, Tax Effect	(6,380)	(5,266)
Net of Tax Amount
Change in fair value arising during the period, Net of Tax Amount	26,702	16,278
Reclassification adjustment for net gains (losses) included in net income, Net of Tax Amount	(6,983)	(3)
Other comprehensive income	19,719	16,275
Net unrealized holding losses on interest rate swaps designated as cash flow hedges:
Before Tax Amount
Change in fair value arising during the period, Before Tax Amount	(2,004)	(15)
Reclassification adjustment for net gains (losses) included in net income, Before Tax Amount	(426)	(329)
Total other comprehensive (loss) income, Before Tax Amount	(2,430)	(344)
Tax Effect
Change in fair value arising during the period, Tax Effect	490	4
Reclassification adjustment for net gains (losses) included in net income, Tax Effect	104	80
Total other comprehensive (loss) income, Tax Effect	594	84
Net of Tax Amount
Change in fair value arising during the period, Net of Tax Amount	(1,514)	(11)
Reclassification adjustment for net gains (losses) included in net income, Net of Tax Amount	(322)	(249)
Other comprehensive income	$ (1,836)	$ (260)

Stockholders_ Equity (Details)

Stockholders’ Equity (Details) - USD ($) $ / shares in Units, $ in Millions	Feb. 21, 2020	Mar. 31, 2020	Dec. 31, 2019
Class A common stock
Class of Stock [Line Items]
Common stock, shares outstanding (in shares)		28,879,576	28,927,576
Common stock, shares issued (in shares)		28,879,576	28,927,576
Class B common stock
Class of Stock [Line Items]
Common stock, shares outstanding (in shares)		13,286,137	14,218,596
Common stock, shares issued (in shares)		13,286,137	17,751,053
Treasury stock (in shares)		0	3,532,457
Treasury stock, acquired (in shares)	932,459
Treasury stock acquired (in dollars per share)	$ 16
Treasury stock acquired	$ 15.2
Broker fees and other expenses	$ 0.3
Treasury stock authorized for cancellation (in shares)		4,464,916

Commitments and Contingencies -

Commitments and Contingencies - Narrative (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Rent expense	$ 1.3	$ 1.6

Commitments and Contingencies_2

Commitments and Contingencies - Summary of Off-Balance Sheet Credit Risk (Details) $ in Thousands	Mar. 31, 2020USD ($)
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Approximate Contract Amount	$ 806,804
Commitments to extend credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Approximate Contract Amount	786,873
Standby letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Approximate Contract Amount	15,414
Commercial letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Approximate Contract Amount	$ 4,517

Fair Value Measurements - Asset

Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Debt securities available for sale
Debt securities available for sale	$ 1,601,303	$ 1,568,752
Equity securities with readily determinable fair value not held for trading	24,225	23,848
Fair Value, Measurements, Recurring
Debt securities available for sale
Debt securities available for sale	1,601,303	1,568,752
Equity securities with readily determinable fair value not held for trading	24,225	23,848
Bank owned life insurance	213,266	211,852
Derivative instruments	42,300	12,097
Assets, fair value	1,881,094	1,816,549
Liabilities
Derivative instruments	44,122	11,809
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	1,601,303	1,568,752
Equity securities with readily determinable fair value not held for trading	24,225	23,848
Bank owned life insurance	213,266	211,852
Derivative instruments	42,300	12,097
Assets, fair value	1,881,094	1,816,549
Liabilities
Derivative instruments	44,122	11,809
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	875,181	933,112
U.S. government sponsored enterprise debt securities | Fair Value, Measurements, Recurring
Debt securities available for sale
Debt securities available for sale	875,181	933,112
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	875,181	933,112
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	330,194	252,836
Corporate debt securities | Fair Value, Measurements, Recurring
Debt securities available for sale
Debt securities available for sale	330,194	252,836
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	330,194	252,836
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	253,182	228,397
U.S. government agency debt securities | Fair Value, Measurements, Recurring
Debt securities available for sale
Debt securities available for sale	253,182	228,397
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	253,182	228,397
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	65,421	50,171
Municipal bonds | Fair Value, Measurements, Recurring
Debt securities available for sale
Debt securities available for sale	65,421	50,171
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	65,421	50,171
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	77,325	104,236
U.S treasury securities | Fair Value, Measurements, Recurring
Debt securities available for sale
Debt securities available for sale	77,325	104,236
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	77,325	104,236
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)	Dec. 31, 2019USD ($)
Fair Value, Measurements, Nonrecurring
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Assets (liabilities) measured at fair value	$ 0

Fair Value Measurements - Summa

Fair Value Measurements - Summary of Financial Instruments Where Fair Value Differes from Carrying Value (Details) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Carrying Value
Financial assets:
Loans	$ 2,776,062	$ 2,819,477
Financial liabilities:
Time deposits	1,882,048	1,745,735
Advances from the FHLB	1,265,000	1,235,000
Junior subordinated debentures	64,178	92,246
Estimated Fair Value
Financial assets:
Loans	2,669,835	2,721,291
Financial liabilities:
Time deposits	1,910,249	1,759,347
Advances from the FHLB	1,287,674	1,244,515
Junior subordinated debentures	$ 60,200	$ 86,738

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2020	Mar. 31, 2019
Earnings Per Share [Abstract]
Net income available to common stockholders	$ 3,382	$ 13,071
Basic weighted average shares outstanding (in shares)	42,185,000	42,755,000
Dilutive effect of share-based compensation awards (in shares)	348,000	159,000
Diluted weighted average shares outstanding (in shares)	42,533,000	42,914,000
Basic earnings per common share (in dollars per share)	$ 0.08	$ 0.31
Diluted earnings per common share (in dollars per share)	$ 0.08	$ 0.30
Antidilutive securities excluded from computation (in shares)	482,316	786,213