Enterprise Financial Services (EFSC) 10-Q 30 Apr 21 2021 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2021	Apr. 27, 2021
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Transition Report	false
Entity File Number	001-15373
Entity Registrant Name	ENTERPRISE FINANCIAL SERVICES CORP
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	43-1706259
Entity Address, Address Line One	150 North Meramec
Entity Address, City or Town	Clayton
Entity Address, State or Province	MO
Entity Address, Postal Zip Code	63105
City Area Code	314
Local Phone Number	725-5500
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Title of 12(b) Security	Common Stock, par value $0.01 per share
Trading Symbol	EFSC
Security Exchange Name	NASDAQ
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		31,259,491
Entity Central Index Key	0001025835
Document Period End Date	Mar. 31, 2021
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	Q1
Amendment Flag	false

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Assets
Cash and due from banks	$ 103,367	$ 99,760
Federal funds sold	1,638	1,519
Interest-earning deposits (including $23,835 and $36,525 pledged as collateral, respectively)	778,810	436,424
Total cash and cash equivalents	883,815	537,703
Interest-earning deposits greater than 90 days	8,016	7,626
Securities available-for-sale	945,660	912,429
Debt Securities, Held-To-Maturity, Net Of Allowance For Credit Losses	467,059	487,610
Trade and Loans Receivables Held-for-sale, Net, Not Part of Disposal Group	8,531	13,564
Loans	7,288,781	7,224,935
Less: Allowance for credit losses on loans	131,527	136,671
Total loans, net	7,157,254	7,088,264
Other investments	51,099	48,764
Fixed assets, net	52,078	53,169
Goodwill	260,567	260,567
Intangible assets, net	21,670	23,084
Other assets	334,950	318,791
Total assets	10,190,699	9,751,571
Liabilities and Shareholders' Equity
Noninterest-bearing deposit accounts	2,910,216	2,711,828
Interest-bearing transaction accounts	1,990,308	1,768,497
Money market accounts	2,405,451	2,327,066
Savings accounts	688,118	627,903
Certificates of deposit:
Brokered	50,209	50,209
Other	471,142	499,886
Total deposits	8,515,444	7,985,389
Subordinated debentures and notes	203,778	203,637
FHLB advances	50,000	50,000
Other borrowings	202,246	271,081
Notes payable	27,143	30,000
Other liabilities	99,591	132,489
Total liabilities	9,098,202	8,672,596
Shareholders' equity:
Preferred stock, $0.01 par value; 5,000,000 shares authorized; 0 shares issued and outstanding	0	0
Common stock, $0.01 par value; 45,000,000 shares authorized; 33,239,276 and 33,190,306 shares issued, respectively	332	332
Treasury stock, at cost; 1,980,093 shares	(73,528)	(73,528)
Additional paid in capital	698,005	697,839
Retained earnings	441,511	417,212
Accumulated other comprehensive income	26,177	37,120
Total shareholders' equity	1,092,497	1,078,975
Total liabilities and shareholders' equity	$ 10,190,699	$ 9,751,571

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Assets
Collateral pledged	$ 23,835	$ 36,525
Shareholders' equity:
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	45,000,000	45,000,000
Common stock, shares issued	33,239,276	33,190,306
Treasury stock, shares	1,980,093	1,980,093

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Interest income:
Interest and fees on loans	$ 76,973	$ 67,169
Interest on debt securities:
Taxable	4,540	7,557
Nontaxable	3,079	1,489
Interest on interest-earning deposits	189	300
Dividends on equity securities	179	173
Total interest income	84,960	76,688
Interest expense:
Interest Expense, Deposits	2,663	9,888
Subordinated debentures and notes	2,819	1,919
FHLB advances	195	895
Notes payable and other borrowings	160	618
Total interest expense	5,837	13,320
Net interest income	79,123	63,368
Provision for credit losses	46	22,264
Net interest income after provision for credit losses	79,077	41,104
Noninterest income:
Total noninterest income	11,290	13,408
Noninterest expense:
Employee compensation and benefits	29,562	21,685
Occupancy	3,751	3,347
Data processing	2,890	2,082
Professional fees	988	862
Merger-related expenses	3,142	0
Other	12,551	10,697
Total noninterest expense	52,884	38,673
Income before income tax expense	37,483	15,839
Income tax expense	7,557	2,971
Net income	$ 29,926	$ 12,868
Earnings per common share
Basic (usd per share)	$ 0.96	$ 0.49
Diluted (usd per share)	$ 0.96	$ 0.48
Deposit Account [Member]
Noninterest income:
Total noninterest income	$ 3,084	$ 3,143
Fiduciary and Trust [Member]
Noninterest income:
Total noninterest income	2,483	2,501
Card Services Revenue [Member]
Noninterest income:
Total noninterest income	2,496	2,247
Tax credit activity, net [Member]
Noninterest income:
Total noninterest income	(1,041)	2,036
Financial Service, Other [Member]
Noninterest income:
Total noninterest income	$ 4,268	$ 3,481

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Statement of Comprehensive Income [Abstract]
Net income	$ 29,926	$ 12,868
Other comprehensive income (loss), after-tax:
Change in unrealized gain (loss) on available-for-sale debt securities	(10,920)	10,564
Reclassification adjustment for realized gain on sale of available-for-sale debt securities	0	(3)
Reclassification of gain on held-to-maturity securities	(1,149)	(156)
Change in unrealized gain (loss) on cash flow hedges arising during the period	847	(5,180)
Reclassification of loss on cash flow hedges	279	123
Total other comprehensive income (loss), after-tax	(10,943)	5,348
Comprehensive income	$ 18,983	$ 18,216

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Shareholders' Equity - USD ($) $ in Thousands	Total	Common Stock [Member]	Treasury Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Total
Reclassification for the adoption of ASU 2016-13 (CECL)	$ (18,114)				$ (18,114)
Beginning balance at Dec. 31, 2019	867,185	$ 281	$ (58,181)	$ 526,599	380,737	$ 17,749
Net income	12,868	0	0	0	12,868	0
Other comprehensive income	5,348	0	0	0	0	5,348
Comprehensive income	18,216	0	0	0	12,868	5,348
Cash dividends paid on common shares	(4,743)	0	0	0	(4,743)	0
Repurchase of common stock	(15,347)	0	(15,347)	0	0	0
Issuance under equity compensation plans, net	(1,721)	0	0	(1,721)	0	0
Share-based Payment Arrangement, Noncash Expense	960	0	0	960	0	0
Ending balance at Mar. 31, 2020	846,436	281	(73,528)	525,838	370,748	23,097
Beginning balance at Dec. 31, 2020	1,078,975	332	(73,528)	697,839	417,212	37,120
Net income	29,926	0	0	0	29,926	0
Other comprehensive income	(10,943)	0	0	0	0	(10,943)
Comprehensive income	18,983	0	0	0	29,926	(10,943)
Cash dividends paid on common shares	(5,627)	0	0	0	(5,627)	0
Issuance under equity compensation plans, net	(1,109)	0	0	(1,109)	0	0
Share-based Payment Arrangement, Noncash Expense	1,275	0	0	1,275	0	0
Ending balance at Mar. 31, 2021	$ 1,092,497	$ 332	$ (73,528)	$ 698,005	$ 441,511	$ 26,177

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Shareholders' Equity (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash dividends paid on common shares, per share	$ 0.18	$ 0.18
Issuance under equity compensation plans, shares	48,970	73,515

Condensed Consolidated Statem_5

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Cash flows from operating activities:
Net income	$ 29,926	$ 12,868
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation	1,581	1,524
Provision for credit losses	46	22,264
Deferred income taxes	3,834	(183)
Net amortization of debt securities	1,937	1,054
Amortization of intangible assets	1,415	1,491
Gain (Loss) on Sale of Debt Investments	0	(4)
Mortgage loans originated-for-sale	(49,065)	(33,537)
Proceeds from mortgage loans sold	52,908	30,888
Sale of other real estate	(47)	52
Sale of state tax credits	(326)	(124)
Share-based Payment Arrangement, Noncash Expense	1,275	960
Net accretion of loan discount	(736)	(2,510)
Changes in other assets and liabilities, net
Increase (Decrease) in Other Operating Assets and Liabilities, Net	(46,423)	(2,181)
Net cash (used in) provided by operating activities	(3,675)	32,562
Cash flows from investing activities:
Net increase in loans	(69,907)	(134,482)
Sale of debt securities, available-for-sale	0	207
Paydown or maturity of debt securities, available-for-sale	69,953	55,932
Paydown or maturity of debt securities, held-to-maturity	18,220	1,595
Redemption of other investments	752	24,310
Sale of state tax credits held for sale	1,632	1,186
Sale of other real estate	450	443
Payments for the purchase of:
Available-for-sale debt securities	(118,791)	(69,336)
Other investments	(3,660)	(28,809)
State tax credits held for sale	0	(3,780)
Fixed assets, net	(489)	(918)
Net cash used in investing activities	(101,840)	(153,652)
Cash flows from financing activities:
Net increase in noninterest-bearing deposit accounts	198,389	27,223
Net increase in interest-bearing deposit accounts	331,666	191,659
Proceeds from FHLB advances, net	0	(300)
Repayments of Long-term Debt	(2,857)	(1,429)
Net decrease in other borrowings	(68,835)	(57,825)
Cash dividends paid on common stock	(5,627)	(4,743)
Payments for Repurchase of Common Stock	0	(15,347)
Shares Issued, Value, Share-based Payment Arrangement, after Forfeiture	(1,109)	(1,721)
Net cash provided by financing activities	451,627	137,517
Net increase in cash and cash equivalents	346,112	16,427
Cash and cash equivalents, beginning of period	537,703	167,256
Cash and cash equivalents, end of period	883,815	183,683
Noncash transactions:
Cash paid during the period for interest	4,836	13,026
Income Taxes Paid, Net	30,167	0
Transfer to other real estate owned in settlement of loans	1,236	0
Right-of-use assets obtained in exchange for lease obligations	$ 0	$ 200

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2021
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES The significant accounting policies used by Enterprise Financial Services Corp (the “Company,” “EFSC,” or “Enterprise”) in the preparation of the condensed consolidated financial statements are summarized below: Business and Consolidation Enterprise is a financial holding company that provides a full range of banking and wealth management services to individuals and corporate customers primarily located in Arizona, California, Kansas, Missouri, Nevada, and New Mexico through its banking subsidiary, Enterprise Bank & Trust. Operating results for the three months ended March 31, 2021 are not necessarily indicative of the results that may be expected for any other interim period or for the year ending December 31, 2021. For further information, refer to the consolidated financial statements and footnotes thereto included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020, as filed with the SEC. Basis of Financial Statement Presentation The accompanying unaudited condensed consolidated financial statements of the Company and its subsidiaries have been prepared in accordance with GAAP for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Except as disclosed herein, there has been no material change in the information disclosed in the Notes to Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020. The condensed consolidated financial statements include the accounts of the Company and its subsidiaries, all of which are wholly owned. All intercompany accounts and transactions have been eliminated. In the opinion of management, the consolidated financial statements contain all adjustments (consisting of normal recurring accruals) considered necessary for the fair presentation of the statements of financial position, results of operations, and cash flow for the interim periods. Recent Accounting Pronouncements FASB ASU 2020-04, “Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting. ” In March 2020, the FASB issued “Reference Rate Reform (Topic 848)” which provides optional expedients and exceptions for contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. The guidance is effective for contract modifications as of March 12, 2020 through December 31, 2022. The Company is actively working to amend and address impacted contracts to allow for a replacement index. Additionally, the Company is currently evaluating the optional expedients and exceptions and has not yet determined the impact this standard may have on its consolidated financial statements.

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2021
Earnings Per Share [Abstract]
Earnings Per Share	EARNINGS PER SHARE Basic earnings per common share data is calculated by dividing net income by the weighted average number of common shares outstanding during the period. Common shares outstanding include common stock and restricted stock awards where recipients have satisfied the vesting terms. Diluted earnings per common share gives effect to all dilutive potential common shares outstanding during the period using the treasury stock method. The following table presents a summary of per common share data and amounts for the periods indicated. Three months ended March 31, (in thousands, except per share data) 2021 2020 Net income as reported $ 29,926 $ 12,868 Weighted average common shares outstanding 31,247 26,473 Additional dilutive common stock equivalents 59 66 Weighted average diluted common shares outstanding 31,306 26,539 Basic earnings per common share: $ 0.96 $ 0.49 Diluted earnings per common share: 0.96 0.48 For the three months ended March 31, 2021 common stock equivalents of approximately 222,000 were excluded from the earnings per share calculations because their effect would have been anti-dilutive. Comparatively, there were 62,000

Investments

Investments	3 Months Ended
	Mar. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Investments	INVESTMENTS The following tables present the amortized cost, gross unrealized gains and losses, allowance of credit losses and fair value of securities available for sale and held to maturity: March 31, 2021 (in thousands) Amortized Cost Gross Gross Fair Value Available-for-sale securities: Obligations of U.S. Government-sponsored enterprises $ 23,484 $ 137 $ (176) $ 23,445 Obligations of states and political subdivisions 404,087 3,132 (3,662) 403,557 Agency mortgage-backed securities 477,151 16,841 (1,911) 492,081 U.S. Treasury bills 10,982 427 — 11,409 Corporate debt securities 14,750 425 (7) 15,168 Total securities available for sale $ 930,454 $ 20,962 $ (5,756) $ 945,660 Held-to-maturity securities: Obligations of states and political subdivisions $ 244,030 $ 900 $ (2,491) $ 242,439 Agency mortgage-backed securities 96,777 1,432 (458) 97,751 Corporate debt securities 126,701 3,208 — 129,909 Total securities held-to-maturity $ 467,508 $ 5,540 $ (2,949) $ 470,099 Less: Allowance for credit losses 449 Total securities held-to-maturity, net $ 467,059 December 31, 2020 (in thousands) Amortized Cost Gross Gross Fair Value Available-for-sale securities: Obligations of U.S. Government-sponsored enterprises $ 14,978 $ 186 $ (3) $ 15,161 Obligations of states and political subdivisions 335,271 8,994 (33) 344,232 Agency mortgage-backed securities 506,703 20,190 (321) 526,572 U.S. Treasury Bills 10,980 486 — 11,466 Corporate debt securities 14,750 248 — 14,998 Total securities available for sale $ 882,682 $ 30,104 $ (357) $ 912,429 Held-to-maturity securities: Obligations of states and political subdivisions $ 248,324 $ 2,814 $ — $ 251,138 Agency mortgage-backed securities 112,742 2,295 (496) 114,541 Corporate debt securities 126,993 8,851 — 135,844 Total securities held to maturity $ 488,059 $ 13,960 $ (496) $ 501,523 Less: Allowance for credit losses 449 Total securities held-to-maturity, net $ 487,610 At March 31, 2021 and December 31, 2020, there were no holdings of securities of any one issuer in an amount greater than 10% of shareholders’ equity, other than U.S. Government agencies and sponsored enterprises. The agency mortgage-backed securities are all issued by U.S. Government agencies and sponsored enterprises. Securities having a fair value of $465.9 million and $525.8 million at March 31, 2021 and December 31, 2020, respectively, were pledged as collateral to secure deposits of public institutions and for other purposes as required by law or contract provisions. The amortized cost and estimated fair value of debt securities at March 31, 2021, by contractual maturity, are shown below. Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. The weighted average life of the mortgage-backed securities is approximately 3 years. Available for sale Held to maturity (in thousands) Amortized Cost Estimated Fair Value Amortized Cost Estimated Fair Value Due in one year or less $ 11,176 $ 11,316 $ — $ — Due after one year through five years 23,972 24,517 12,733 13,109 Due after five years through ten years 32,875 33,175 132,553 135,497 Due after ten years 385,280 384,571 225,445 223,742 Agency mortgage-backed securities 477,151 492,081 96,777 97,751 $ 930,454 $ 945,660 $ 467,508 $ 470,099 The following tables presents a summary of available-for-sale investment securities in an unrealized loss position: March 31, 2021 Less than 12 months 12 months or more Total (in thousands) Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Obligations of U.S. Government-sponsored enterprises $ 13,324 $ 176 $ — $ — $ 13,324 $ 176 Obligations of states and political subdivisions $ 222,901 $ 3,662 $ — $ — $ 222,901 $ 3,662 Agency mortgage-backed securities 89,591 1,911 — — 89,591 1,911 Corporate debt securities 4,493 7 — — 4,493 7 $ 330,309 $ 5,756 $ — $ — $ 330,309 $ 5,756 December 31, 2020 Less than 12 months 12 months or more Total (in thousands) Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Obligations of U.S. Government-sponsored enterprises $ 4,997 $ 3 $ — $ — $ 4,997 $ 3 Obligations of states and political subdivisions $ 4,079 $ 33 $ — $ — $ 4,079 $ 33 Agency mortgage-backed securities 65,986 321 — — 65,986 321 $ 75,062 $ 357 $ — $ — $ 75,062 $ 357 The unrealized losses at both March 31, 2021 and December 31, 2020 were primarily attributable to changes in market interest rates after the securities were purchased. At March 31, 2021, the Company had not recorded an ACL on available-for-sale securities. At March 31, 2021, the Company had not recognized an other-than-temporary impairment. Accrued interest receivable on held-to-maturity debt securities totaled $3.5 million at March 31, 2021 and is excluded from the estimate of expected credit losses. The estimate of expected credit losses considers historical credit loss information adjusted for current conditions and reasonable and supportable forecasts. At March 31, 2021, the ACL on held-to-maturity securities was $0.4 million. During the three months ended March 31, 2021, there were no sales of available-for-sale investment securities. Proceeds from sales of available-for-sale investment securities during the three months ended March 31, 2020 were $207 thousand and gross gains were $4 thousand. Other Investments At March 31, 2021 and December 31, 2020, other investments totaled $51.1 million and $48.8 million, respectively. As a member of the FHLB system administered by the Federal Housing Finance Agency, the Bank is required to maintain a minimum investment in capital stock with the FHLB consisting of membership stock and activity-based stock. The FHLB capital stock of $12.0 million and $10.8 million at March 31, 2021 and December 31, 2020, respectively, is recorded at cost, which represents redemption value, and is included in other investments in the consolidated balance sheets. The remaining amounts in other investments primarily include various investments in SBICs, CDFIs, and the Company’s investment in unconsolidated trusts used to issue preferred securities to third parties.

Loans

Loans	3 Months Ended
	Mar. 31, 2021
Receivables [Abstract]
Portfolio Loans	LOANS The following table presents a summary of loans by category: (in thousands) March 31, 2021 December 31, 2020 Commercial and industrial $ 3,096,319 $ 3,100,299 Real estate: Commercial - investor owned 1,669,215 1,589,419 Commercial - owner occupied 1,517,755 1,498,408 Construction and land development 510,501 546,686 Residential 303,047 319,179 Total real estate loans 4,000,518 3,953,692 Other 212,068 187,083 Loans, before unearned loan fees 7,308,905 7,241,074 Unearned loan fees, net (20,124) (16,139) Loans, including unearned loan fees $ 7,288,781 $ 7,224,935 PPP loans totaled $754.4 million at March 31, 2021, or $737.7 million net of deferred fees of $16.7 million. The loan balance at March 31, 2021 also includes a net premium on acquired loans of $17.7 million. At March 31, 2021 loans of $2.7 billion were pledged to FHLB and the Federal Reserve Bank. PPP loans totaled $709.9 million at December 31, 2020, or $698.6 million net of unearned fees of $11.3 million. The loan balance includes a net premium on acquired loans of $16.1 million at December 31, 2020. At December 31, 2020 loans of $2.5 billion were pledged to FHLB and the Federal Reserve Bank. The Company has elected to present the accrued interest receivable balance separate from amortized cost basis, to exclude accrued interest receivable balances from the tabular disclosures, and not to estimate an ACL on accrued interest receivable as these amounts are timely written off as a credit loss expense. Accrued interest receivable totaled $30.7 million at March 31, 2021 and was reported in Other Assets on the consolidated balance sheets. A summary of the activity in the ACL on loans by category for the three months ended March 31, 2021 is as follows: (in thousands) Commercial and industrial CRE - investor owned CRE - Construction and land development Residential real estate Other Total Allowance for credit losses on loans: Balance at December 31, 2020 $ 58,812 $ 32,062 $ 17,012 $ 21,413 $ 4,585 $ 2,787 $ 136,671 Provision for credit losses 541 3,381 3,226 (7,091) (152) 598 503 Charge-offs (3,739) (2,372) (28) — (271) (64) (6,474) Recoveries 327 34 9 235 143 79 827 Balance at March 31, 2021 $ 55,941 $ 33,105 $ 20,219 $ 14,557 $ 4,305 $ 3,400 $ 131,527 The ACL on sponsor finance loans, which is included in the categories above, represented $19.7 million and $19.0 million, respectively, as of March 31, 2021 and December 31, 2020. A summary of the activity in the ACL on loans by category for the three months ended March 31, 2020 is as follows: (in thousands) Commercial and industrial CRE - investor owned CRE - Construction and land development Residential real estate Other Total Allowance for credit losses on loans: Balance at December 31, 2019 $ 27,455 $ 5,935 $ 4,873 $ 2,611 $ 1,280 $ 1,134 $ 43,288 CECL adoption 6,494 10,726 2,598 5,183 3,470 (84) 28,387 PCD loans immediately charged off — (5) (57) (217) (1,401) — (1,680) Balance at January 1, 2020 $ 33,949 $ 16,656 $ 7,414 $ 7,577 $ 3,349 $ 1,050 $ 69,995 Provision for credit losses 11,591 3,224 1,994 2,309 2,011 566 21,695 Charge-offs (63) (2) — (31) (122) (86) (304) Recoveries 504 14 69 40 157 17 801 Balance at March 31, 2020 $ 45,981 $ 19,892 $ 9,477 $ 9,895 $ 5,395 $ 1,547 $ 92,187 The CECL methodology incorporates various economic scenarios. The Company utilizes three forecasts in the model: Moody’s baseline, a stronger near-term growth upside and a moderate recession downside forecast. The Company weights these scenarios at 70%, 5%, and 25%, respectively, which added approximately $5.4 million to the ACL over the baseline model. These forecasts incorporate an accommodative monetary policy and the current and anticipated impact of government stimulus. The Company has also recognized the risk posed by loans that have received multiple deferrals of principal and interest payments, loans in the hospitality sector, and loans with other specific identified risks by allocating additional reserves to those segments. Some of the key risks to the forecasts that could result in future provision for credit losses are additional shutdowns and self-quarantines if another significant wave of COVID hits, the vaccination process stalls, small-business bankruptcies occur at higher levels, or unemployment increases. The following tables present the recorded investment in nonperforming loans by category: March 31, 2021 (in thousands) Nonaccrual Restructured, accruing Loans over 90 days past due and still accruing interest Total nonperforming loans Nonaccrual loans with no allowance Commercial and industrial $ 18,372 $ 3,243 $ 893 $ 22,508 $ 8,239 Real estate: Commercial - investor owned 7,379 — — 7,379 455 Commercial - owner occupied 2,589 — — 2,589 2,331 Construction and land development — — — — — Residential 3,868 77 — 3,945 2,795 Other 17 — 221 238 — Total $ 32,225 $ 3,320 $ 1,114 $ 36,659 $ 13,820 December 31, 2020 (in thousands) Nonaccrual Restructured, accruing Loans over 90 days past due and still accruing interest Total nonperforming loans Nonaccrual loans with no allowance Commercial and industrial $ 18,158 $ 3,482 $ 130 $ 21,770 $ 8,316 Real estate: Commercial - investor owned 9,579 — — 9,579 716 Commercial - owner occupied 2,940 — — 2,940 6,024 Residential 4,112 77 — 4,189 — Other 29 — — 29 3,190 Total $ 34,818 $ 3,559 $ 130 $ 38,507 $ 18,246 No interest income was recognized on nonaccrual loans during the three months ended March 31, 2021 or 2020. The following table presents the amortized cost basis of collateral-dependent nonperforming loans by class of loan at March 31, 2021: Type of Collateral (in thousands) Commercial Real Estate Residential Real Estate Blanket Lien Other Commercial and industrial $ 10,737 $ — $ 3,064 $ — Real estate: Commercial - investor owned 7,155 — — — Commercial - owner occupied 2,387 — — — Residential — 3,891 — — Other — — — 215 Total $ 20,279 $ 3,891 $ 3,064 $ 215 There were no loans restructured during the three months ended March 31, 2021. The recorded investment by category for troubled debt restructurings that occurred during the three months ended March 31, 2020 are as follows: March 31, 2020 (in thousands, except for number of loans) Number of loans Pre-Modification Outstanding Recorded Balance Post-Modification Outstanding Recorded Balance Commercial and industrial 1 $ 3,731 $ 3,731 Real estate: Residential 2 155 155 Total 3 $ 3,886 $ 3,886 No troubled debt restructurings subsequently defaulted during the three months ended March 31, 2021 or 2020. In response to the COVID-19 pandemic, the Company has implemented short-term deferral programs allowing customers to primarily defer payments for up to 90 days. Deferrals under the CARES Act or interagency guidance are not included above as troubled debt restructurings. As of March 31, 2021, $21.1 million loans remain in a deferral status. Interest of $4.2 million has been deferred and will be collected upon final maturity. The aging of the recorded investment in past due loans by class at March 31, 2021 is shown below. March 31, 2021 (in thousands) 30-89 Days 90 or More Total Current Total Commercial and industrial $ 25,976 $ 17,091 $ 43,067 $ 3,036,576 $ 3,079,643 Real estate: Commercial - investor owned 768 6,700 7,468 1,661,747 1,669,215 Commercial - owner occupied 312 3,987 4,299 1,513,456 1,517,755 Construction and land development 400 — 400 510,101 510,501 Residential 2,371 1,090 3,461 299,586 303,047 Other 486 237 723 207,897 208,620 Total $ 30,313 $ 29,105 $ 59,418 $ 7,229,363 $ 7,288,781 The Company categorizes loans into risk categories based on relevant information about the ability of borrowers to service their debt, such as current financial information, payment experience, credit documentation, and current economic factors among other factors. This analysis is performed on a quarterly basis. The Company uses the following definitions for risk ratings: • Grades 1, 2, and 3 – Includes loans to borrowers with a continuous record of strong earnings, sound balance sheet condition and capitalization, ample liquidity with solid cash flow, and whose management team has experience and depth within their industry. • Grade 4 – Includes loans to borrowers with positive trends in profitability, satisfactory capitalization and balance sheet condition, and sufficient liquidity and cash flow. • Grade 5 – Includes loans to borrowers that may display fluctuating trends in sales, profitability, capitalization, liquidity, and cash flow. • Grade 6 – Includes loans to borrowers where an adverse change or perceived weakness has occurred, but may be correctable in the near future. Alternatively, this rating category may also include circumstances where the borrower is starting to reverse a negative trend or condition, or has recently been upgraded from a 7, 8, or 9 rating. • Grade 7 – Watch credits are borrowers that have experienced financial setback of a nature that is not determined to be severe or influence ‘ongoing concern’ expectations. Although possible, no loss is anticipated at this time, due to strong collateral and/or guarantor support. • Grade 8 – Substandard credits include those borrowers characterized by significant losses and sustained downward trends in balance sheet condition, liquidity, and cash flow. Repayment reliance may have shifted to secondary sources. Collateral exposure may exist and additional reserves may be warranted. • Grade 9 – Doubtful credits include borrowers that may show deteriorating trends that are unlikely to be corrected. Collateral values may appear insufficient for full recovery, therefore requiring a partial charge-off, or debt renegotiation with the borrower. The borrower may have declared bankruptcy or bankruptcy is likely in the near term. All doubtful rated credits will be on nonaccrual. The recorded investment by risk category of the loans by class at March 31, 2021, which is based upon the most recent analysis performed is as follows: Term Loans by Origination Year (in thousands) 2021 2020 2019 2018 2017 Prior Revolving Loans Converted to Term Loans Revolving Loans Total Commercial and industrial Pass (1-6) $ 510,640 $ 1,044,599 $ 403,420 $ 196,752 $ 121,210 $ 65,492 $ 8,432 $ 515,327 $ 2,865,872 Watch (7) 20,506 34,164 8,303 15,706 4,378 15,002 191 57,994 156,244 Classified (8-9) 3,731 6,220 9,270 2,823 354 1,761 407 19,277 43,843 Total Commercial and industrial $ 534,877 $ 1,084,983 $ 420,993 $ 215,281 $ 125,942 $ 82,255 $ 9,030 $ 592,598 $ 3,065,959 Commercial real estate-investor owned Pass (1-6) $ 125,834 $ 471,216 $ 351,386 $ 195,605 $ 129,903 $ 252,747 $ 3,712 $ 38,880 $ 1,569,283 Watch (7) 2,782 32,554 13,017 6,588 — 24,282 — — 79,223 Classified (8-9) — 6,012 5,300 6,651 — 2,746 — — 20,709 Total Commercial real estate-investor owned $ 128,616 $ 509,782 $ 369,703 $ 208,844 $ 129,903 $ 279,775 $ 3,712 $ 38,880 $ 1,669,215 Commercial real estate-owner occupied Pass (1-6) $ 88,848 $ 422,455 $ 253,188 $ 205,203 $ 161,983 $ 258,470 $ — $ 42,003 $ 1,432,150 Watch (7) 2,111 8,967 5,212 17,006 6,130 9,732 — 1,752 50,910 Classified (8-9) 383 1,794 7,595 5,976 7,726 11,158 — 63 34,695 Total Commercial real estate-owner occupied $ 91,342 $ 433,216 $ 265,995 $ 228,185 $ 175,839 $ 279,360 $ — $ 43,818 $ 1,517,755 Construction real estate Pass (1-6) $ 76,142 $ 180,898 $ 120,004 $ 30,559 $ 7,843 $ 15,954 $ — $ 24,405 $ 455,805 Watch (7) 16,333 62 85 20,748 11,287 2,468 — — 50,983 Classified (8-9) — 55 3,030 499 — 29 — 100 3,713 Total Construction real estate $ 92,475 $ 181,015 $ 123,119 $ 51,806 $ 19,130 $ 18,451 $ — $ 24,505 $ 510,501 Residential real estate Pass (1-6) $ 15,166 $ 56,188 $ 23,567 $ 15,421 $ 14,844 $ 109,575 $ 112 $ 57,997 $ 292,870 Watch (7) — 313 801 513 — 1,725 — 379 3,731 Classified (8-9) 220 887 717 77 14 3,543 — 72 5,530 Total residential real estate $ 15,386 $ 57,388 $ 25,085 $ 16,011 $ 14,858 $ 114,843 $ 112 $ 58,448 $ 302,131 Other Pass (1-6) $ 33,630 $ 56,052 $ 21,753 $ 27,503 $ 9,290 $ 25,300 $ — $ 31,640 $ 205,168 Watch (7) — — 1 7 — 2,588 — 5 2,601 Classified (8-9) — — 16 18 1 23 — 1 59 Total Other $ 33,630 $ 56,052 $ 21,770 $ 27,528 $ 9,291 $ 27,911 $ — $ 31,646 $ 207,828 In the table above, loan originations in 2021 and 2020 with a classification of watch or classified primarily represent renewals or modifications initially underwritten and originated in prior years. For certain loans, primarily credit cards, the Company evaluates credit quality based on the aging status. The following table presents the recorded investment on loans based on payment activity: March 31, 2021 (in thousands) Performing Non Performing Total Commercial and industrial $ 13,682 $ 2 $ 13,684 Real estate: Residential 916 — 916 Other 771 21 792 Total $ 15,369 $ 23 $ 15,392

Commitments

Commitments	3 Months Ended
	Mar. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments	COMMITMENTS AND CONTINGENCIES The Company issues financial instruments with off balance sheet risk in the normal course of the business of meeting the financing needs of its customers. These financial instruments include commitments to extend credit and standby letters of credit. These instruments may involve, to varying degrees, elements of credit and interest rate risk in excess of the amounts recognized in the consolidated balance sheets. The Company’s extent of involvement and maximum potential exposure to credit loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit and standby letters of credit is represented by the contractual amount of these instruments. The Company uses the same credit policies in making commitments and conditional obligations as it does for financial instruments included on its consolidated balance sheets. The contractual amounts of off-balance-sheet financial instruments are as follows: (in thousands) March 31, 2021 December 31, 2020 Commitments to extend credit $ 2,043,850 $ 1,946,068 Letters of credit 58,093 50,971 Off-Balance Sheet Credit Risk Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments usually have fixed expiration dates or other termination clauses, may have significant usage restrictions, and may require payment of a fee. Of the total commitments to extend credit at March 31, 2021, and December 31, 2020, approximately $178.5 million and $160.6 million, respectively, represent fixed rate loan commitments. Since certain of the commitments may expire without being drawn upon or may be revoked, the total commitment amounts do not necessarily represent future cash requirements. The Company evaluates each customer’s credit worthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Company upon extension of credit, is based on management’s credit evaluation of the borrower. Collateral held varies, but may include accounts receivable, inventory, premises and equipment, and real estate. Other liabilities includes $5.4 million and $5.7 million for estimated losses attributable to the unadvanced commitments at March 31, 2021, and December 31, 2020, respectively. Standby letters of credit are conditional commitments issued by the Company to guarantee the performance or payment of a customer to a third party. These standby letters of credit are issued to support contractual obligations of the Company’s customers. The credit risk involved in issuing letters of credit is essentially the same as the risk involved in extending loans to customers. As of March 31, 2021, the approximate remaining terms of standby letters of credit range from 1 month to 4 years, 9 months. Contingencies The Company and its subsidiaries are, from time to time, parties to various legal proceedings arising out of their businesses. Management believes there are no such proceedings pending or threatened against the Company or its subsidiaries which, if determined adversely, would have a material adverse effect on the business, consolidated financial condition, results of operations or cash flows of the Company or any of its subsidiaries.

Derivative Financial Instrument

Derivative Financial Instruments	3 Months Ended
	Mar. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	DERIVATIVE FINANCIAL INSTRUMENTS Risk Management Objective of Using Derivatives The Company is exposed to certain risk arising from both its business operations and economic conditions. The Company principally manages its exposures to a wide variety of business and operational risks through management of its core business activities. The Company manages economic risks, including interest rate, liquidity, and credit risk primarily by managing the amount, sources, and duration of its assets and liabilities and the use of derivative financial instruments. Specifically, the Company enters into derivative financial instruments to manage exposures that arise from business activities that result in the receipt or payment of future known and uncertain cash amounts, the value of which are determined by interest rates. The Company’s derivative financial instruments are used to manage differences in the amount, timing, and duration of the Company’s known or expected cash receipts and its known or expected cash payments principally related to the Company’s borrowings. The Company does not enter into derivative financial instruments for trading purposes. Cash Flow Hedges of Interest Rate Risk The Company’s objectives in using interest rate derivatives are to add stability to interest expense and to manage its exposure to interest rate movements. To accomplish this objective, the Company primarily uses interest rate swaps as part of its interest rate risk management strategy. Interest rate swaps designated as cash flow hedges involve the receipt of variable amounts from a counterparty in exchange for the Company making fixed-rate payments over the life of the agreements without exchange of the underlying notional amount. These derivatives were used to hedge the variable cash flows associated with existing variable-rate debt. The Company has executed a series of cash flow hedges to fix the effective interest rate for payments due on $62.0 million of LIBOR-based junior subordinated debentures to a weighted-average-fixed rate of 2.62%. Select terms of the hedges are as follows: $ in thousands Notional Fixed Rate Maturity Date $ 15,465 2.60 % March 15, 2024 $ 14,433 2.60 % March 30, 2024 $ 18,558 2.64 % March 15, 2026 $ 13,506 2.64 % March 17, 2026 For derivatives designated and that qualify as cash flow hedges of interest rate risk, the gain or loss on the derivative is recorded in accumulated other comprehensive income and subsequently reclassified into interest expense in the same period(s) during which the hedged transaction affects earnings. Amounts reported in accumulated other comprehensive income related to derivatives will be reclassified to interest expense as interest payments are paid on the Company’s variable-rate debt. During the next twelve months, the Company estimates that an additional $1.5 million will be reclassified as an increase to interest expense. Non-designated Hedges Derivatives not designated as hedges are not considered speculative and result from a service the Company provides to certain customers. The Company executes interest rate swaps with commercial banking customers to facilitate their respective risk management strategies. Those interest rate swaps are simultaneously hedged by offsetting derivatives the Company executes with a third party, such that the Company minimizes its net risk exposure resulting from such transactions. As the interest rate derivatives associated with this program do not meet the strict hedge accounting requirements, changes in the fair value of both the customer derivatives and the offsetting derivatives are recognized directly in earnings as a component of other noninterest income. The table below presents the fair value of the Company’s derivative financial instruments: Notional Amount Derivative Assets Derivative Liabilities (in thousands) March 31, 2021 December 31, 2020 March 31, 2021 December 31, 2020 March 31, 2021 December 31, 2020 Derivatives Designated as Hedging Instruments: Interest rate swap $ 61,962 $ 61,962 $ — $ — $ 4,488 $ 5,987 Derivatives not Designated as Hedging Instruments: Interest rate swap $ 1,007,417 $ 1,026,016 $ 20,271 $ 28,703 $ 20,311 $ 28,980 Derivative assets are classified on the balance sheet in other assets. Derivative liabilities are classified on the balance sheet in other liabilities. The table below presents a gross presentation, the effects of offsetting, and a net presentation of the Company’s financial instruments that are subject to offsetting. The gross amounts of assets or liabilities can be reconciled to the tabular disclosure of fair value. The fair value table above provides the location that financial assets and liabilities are presented on the Balance Sheet. As of March 31, 2021 Gross Amounts Not Offset in the Statement of Financial Position (in thousands) Gross Amounts Recognized Gross Amounts Offset in the Statement of Financial Position Net Amounts of Assets presented in the Statement of Financial Position Financial Instruments Fair Value Collateral Posted Net Amount Assets: Interest rate swap $ 20,271 $ — $ 20,271 $ 1,322 $ — $ 18,949 Liabilities: Interest rate swap $ 24,799 $ — $ 24,799 $ 1,322 $ 23,090 $ 387 Securities sold under agreements to repurchase 202,246 — 202,246 — 202,246 — As of December 31, 2020 Gross Amounts Not Offset in the Statement of Financial Position (in thousands) Gross Amounts Recognized Gross Amounts Offset in the Statement of Financial Position Net Amounts of Assets presented in the Statement of Financial Position Financial Instruments Fair Value Collateral Posted Net Amount Assets: Interest rate swap $ 28,703 $ — $ 28,703 $ 2 $ — $ 28,701 Liabilities: Interest rate swap $ 34,967 $ — $ 34,967 $ 2 $ 34,903 $ 62 Securities sold under agreements to repurchase 271,081 — 271,081 — 271,081 — As of March 31, 2021, the fair value of derivatives in a net liability position, which includes accrued interest but excludes any adjustment for nonperformance risk, related to these agreements was $25.6 million .

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2021
Fair Value Disclosures [Abstract]
Fair Value Measurements	FAIR VALUE MEASUREMENTS The following table summarizes financial instruments measured at fair value on a recurring basis segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value: March 31, 2021 (in thousands) Quoted Prices in Significant Significant Total Fair Assets Securities available for sale Obligations of U.S. Government-sponsored enterprises $ — $ 23,445 $ — $ 23,445 Obligations of states and political subdivisions — 403,557 — 403,557 Agency mortgage-backed securities — 492,081 — 492,081 U.S. Treasury bills — 11,409 — 11,409 Corporate debt securities — 15,168 — 15,168 Total securities available for sale — 945,660 — 945,660 Derivatives — 20,271 — 20,271 Total assets $ — $ 965,931 $ — $ 965,931 Liabilities Derivatives $ — $ 24,799 $ — $ 24,799 Total liabilities $ — $ 24,799 $ — $ 24,799 December 31, 2020 (in thousands) Quoted Prices in Significant Significant Total Fair Assets Securities available for sale Obligations of U.S. Government-sponsored enterprises $ — $ 15,161 $ — $ 15,161 Obligations of states and political subdivisions — 344,232 — 344,232 Residential mortgage-backed securities — 526,572 — 526,572 Corporate debt securities — 14,998 — 14,998 U.S. Treasury bills — 11,466 — 11,466 Total securities available-for-sale — 912,429 — 912,429 Derivative financial instruments — 28,703 — 28,703 Total assets $ — $ 941,132 $ — $ 941,132 Liabilities Derivatives $ — $ 34,967 $ — $ 34,967 Total liabilities $ — $ 34,967 $ — $ 34,967 From time to time, the Company measures certain assets at fair value on a nonrecurring basis. These include assets measured at the lower of cost or fair value that were recognized at fair value below cost at the end of the period. March 31, 2021 (in thousands) Total Fair Value Quoted Prices in Active Significant Significant Nonaccrual loans (1) $ 2,503 $ — $ — $ 2,503 (1) The amounts represent only balances measured at fair value during the period and still held as of the reporting date. The following table presents the losses recorded in relation to assets measured on a nonrecurring basis and still held as of the reporting date. Three months ended (in thousands) March 31, 2021 March 31, 2020 Nonaccrual loans $ 1,742 $ 11 Other real estate — 777 Total $ 1,742 $ 788 Following is a summary of the carrying amounts and fair values of certain financial instruments: March 31, 2021 December 31, 2020 (in thousands) Carrying Amount Estimated fair value Level Carrying Amount Estimated fair value Level Balance sheet assets Securities held-to-maturity, net $ 467,059 $ 470,099 Level 2 $ 487,610 $ 501,523 Level 2 Other investments 51,099 51,099 Level 2 48,764 48,764 Level 2 Loans held for sale 8,531 8,531 Level 2 13,564 13,564 Level 2 Loans, net 7,157,254 7,099,662 Level 3 7,088,264 7,067,562 Level 3 State tax credits, held for sale 34,287 37,802 Level 3 36,853 39,925 Level 3 Balance sheet liabilities Certificates of deposit $ 521,351 $ 525,000 Level 3 $ 550,095 $ 553,946 Level 3 Subordinated debentures and notes 203,778 193,071 Level 2 203,637 192,889 Level 2 FHLB advances 50,000 51,694 Level 2 50,000 51,871 Level 2 Other borrowings and notes payable 229,389 229,389 Level 2 301,081 301,081 Level 2 For information regarding the methods and assumptions used to estimate the fair value of each class of financial instruments refer to Note 19 – Fair Value Measurements in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020, as filed with the SEC.

SHAREHOLDERS_ EQUITY AND COMPEN

SHAREHOLDERS’ EQUITY AND COMPENSATION PLANS	3 Months Ended
	Mar. 31, 2020
Equity [Abstract]
Accumulated Other Comprehensive Income	SHAREHOLDERS’ EQUITY AND COMPENSATION PLANS Shareholders’ Equity Accumulated Other Comprehensive Income (Loss) The following tables present the changes in accumulated other comprehensive income after-tax by component: Three months ended March 31, 2021 (in thousands) Net Unrealized Gain (Loss) on Available-for-Sale Debt Securities Unamortized Gain (Loss) on Held-to-Maturity Securities Net Unrealized Loss on Cash Flow Hedges Total Balance, December 31, 2020 $ 22,320 $ 19,308 $ (4,508) $ 37,120 Net change $ (10,920) $ (1,149) $ 1,126 $ (10,943) Balance, March 31, 2021 $ 11,400 $ 18,159 $ (3,382) $ 26,177 Three months ended March 31, 2020 (in thousands) Net Unrealized Gain (Loss) on Available-for-Sale Debt Securities Unamortized Gain (Loss) on Held-to-Maturity Securities Net Unrealized Loss on Cash Flow Hedges Total Balance, December 31, 2019 $ 14,977 $ 4,934 $ (2,162) $ 17,749 Net change $ 10,561 $ (156) $ (5,057) $ 5,348 Balance, March 31, 2020 $ 25,538 $ 4,778 $ (7,219) $ 23,097 The following tables present the pre-tax and after-tax changes in the components of other comprehensive income: Three months ended March 31, (in thousands) 2021 2020 Pre-tax Tax effect After-tax Pre-tax Tax effect After-tax Change in unrealized gain (loss) on available-for-sale debt securities $ (14,541) $ (3,621) $ (10,920) $ 14,029 $ 3,465 $ 10,564 Reclassification adjustment for realized gain on sale of available-for-sale debt securities (a) — — — (4) (1) (3) Reclassification of gain on held-to-maturity securities (b) (1,530) (381) (1,149) (207) (51) (156) Change in unrealized gain (loss) on cash flow hedges arising during the period 1,128 281 847 (6,879) (1,699) (5,180) Reclassification of loss on cash flow hedges (b) 372 93 279 163 40 123 Total other comprehensive income $ (14,571) $ (3,628) $ (10,943) $ 7,102 $ 1,754 $ 5,348 (a) The pre-tax amount is reported in noninterest income/expense in the Consolidated Statements of Operations (b) The pre-tax amount is reported in interest income/expense in the Consolidated Statements of Operations Compensation Plans Employee Stock Options During the three months ended March 31, 2021, employee stock options were granted under the Amended and Restated 2018 Stock Incentive Plan. Various information related to the stock options is shown below. Employee Stock Options Weighted Average Life Weighted Average Price Shares Exercisable Weighted Average Exercise Price Options Outstanding, December 31, 2020 — Options granted 111,804 9.9 $ 43.81 — $ — Options Outstanding, March 31, 2021 111,804

SUBSEQUENT EVENT

SUBSEQUENT EVENT	3 Months Ended
	Mar. 31, 2021
Subsequent Events [Abstract]
SUBSEQUENT EVENT	SUBSEQUENT EVENTOn April 26, 2021 the Company and the Bank entered into a definitive merger agreement with First Choice Bancorp (“FCBP”), the holding company of First Choice Bank (“First Choice”) pursuant to which the Company will acquire FCBP in an all-stock merger. Under the terms of the merger agreement, FCBP will merge with and into the Company, and First Choice will subsequently merge with and into the Bank (with the Company and the Bank as the surviving entities) in a transaction valued at approximately $397.7 million, or $33.40 per FCBP share, based on the closing price of EFSC’s common stock on April 23, 2021. On a pro forma consolidated basis, the combined company would have approximately $12.7 billion in consolidated total assets as of March 31, 2021.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2021
Accounting Policies [Abstract]
Business and Consolidation	Basis of Financial Statement Presentation The accompanying unaudited condensed consolidated financial statements of the Company and its subsidiaries have been prepared in accordance with GAAP for interim financial information and with the instructions to Form 10-Q and Rule 10-01 of Regulation S-X. Except as disclosed herein, there has been no material change in the information disclosed in the Notes to Consolidated Financial Statements included in the Company’s Annual Report on Form 10-K for the year ended December 31, 2020. The condensed consolidated financial statements include the accounts of the Company and its subsidiaries, all of which are wholly owned. All intercompany accounts and transactions have been eliminated. In the opinion of management, the consolidated financial statements contain all adjustments (consisting of normal recurring accruals) considered necessary for the fair presentation of the statements of financial position, results of operations, and cash flow for the interim periods. Recent Accounting Pronouncements FASB ASU 2020-04, “Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting. ” In March 2020, the FASB issued “Reference Rate Reform (Topic 848)” which provides optional expedients and exceptions for contracts, hedging relationships, and other transactions that reference LIBOR or another reference rate expected to be discontinued because of reference rate reform. The guidance is effective for contract modifications as of March 12, 2020 through December 31, 2022. The Company is actively working to amend and address impacted contracts to allow for a replacement index. Additionally, the Company is currently evaluating the optional expedients and exceptions and has not yet determined the impact this standard may have on its consolidated financial statements.

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2021
Earnings Per Share [Abstract]
Summary of Per Common Share Data and Amounts	The following table presents a summary of per common share data and amounts for the periods indicated. Three months ended March 31, (in thousands, except per share data) 2021 2020 Net income as reported $ 29,926 $ 12,868 Weighted average common shares outstanding 31,247 26,473 Additional dilutive common stock equivalents 59 66 Weighted average diluted common shares outstanding 31,306 26,539 Basic earnings per common share: $ 0.96 $ 0.49 Diluted earnings per common share: 0.96 0.48

Investments (Tables)

Investments (Tables)	3 Months Ended
	Mar. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Schedule of Available-for-sale and Held-to-Maturity Securities Reconciliation	The following tables present the amortized cost, gross unrealized gains and losses, allowance of credit losses and fair value of securities available for sale and held to maturity: March 31, 2021 (in thousands) Amortized Cost Gross Gross Fair Value Available-for-sale securities: Obligations of U.S. Government-sponsored enterprises $ 23,484 $ 137 $ (176) $ 23,445 Obligations of states and political subdivisions 404,087 3,132 (3,662) 403,557 Agency mortgage-backed securities 477,151 16,841 (1,911) 492,081 U.S. Treasury bills 10,982 427 — 11,409 Corporate debt securities 14,750 425 (7) 15,168 Total securities available for sale $ 930,454 $ 20,962 $ (5,756) $ 945,660 Held-to-maturity securities: Obligations of states and political subdivisions $ 244,030 $ 900 $ (2,491) $ 242,439 Agency mortgage-backed securities 96,777 1,432 (458) 97,751 Corporate debt securities 126,701 3,208 — 129,909 Total securities held-to-maturity $ 467,508 $ 5,540 $ (2,949) $ 470,099 Less: Allowance for credit losses 449 Total securities held-to-maturity, net $ 467,059 December 31, 2020 (in thousands) Amortized Cost Gross Gross Fair Value Available-for-sale securities: Obligations of U.S. Government-sponsored enterprises $ 14,978 $ 186 $ (3) $ 15,161 Obligations of states and political subdivisions 335,271 8,994 (33) 344,232 Agency mortgage-backed securities 506,703 20,190 (321) 526,572 U.S. Treasury Bills 10,980 486 — 11,466 Corporate debt securities 14,750 248 — 14,998 Total securities available for sale $ 882,682 $ 30,104 $ (357) $ 912,429 Held-to-maturity securities: Obligations of states and political subdivisions $ 248,324 $ 2,814 $ — $ 251,138 Agency mortgage-backed securities 112,742 2,295 (496) 114,541 Corporate debt securities 126,993 8,851 — 135,844 Total securities held to maturity $ 488,059 $ 13,960 $ (496) $ 501,523 Less: Allowance for credit losses 449 Total securities held-to-maturity, net $ 487,610
Schedule of Available-for-sale and Held-to-Maturity Securities Reconciliation	The following tables present the amortized cost, gross unrealized gains and losses, allowance of credit losses and fair value of securities available for sale and held to maturity: March 31, 2021 (in thousands) Amortized Cost Gross Gross Fair Value Available-for-sale securities: Obligations of U.S. Government-sponsored enterprises $ 23,484 $ 137 $ (176) $ 23,445 Obligations of states and political subdivisions 404,087 3,132 (3,662) 403,557 Agency mortgage-backed securities 477,151 16,841 (1,911) 492,081 U.S. Treasury bills 10,982 427 — 11,409 Corporate debt securities 14,750 425 (7) 15,168 Total securities available for sale $ 930,454 $ 20,962 $ (5,756) $ 945,660 Held-to-maturity securities: Obligations of states and political subdivisions $ 244,030 $ 900 $ (2,491) $ 242,439 Agency mortgage-backed securities 96,777 1,432 (458) 97,751 Corporate debt securities 126,701 3,208 — 129,909 Total securities held-to-maturity $ 467,508 $ 5,540 $ (2,949) $ 470,099 Less: Allowance for credit losses 449 Total securities held-to-maturity, net $ 467,059 December 31, 2020 (in thousands) Amortized Cost Gross Gross Fair Value Available-for-sale securities: Obligations of U.S. Government-sponsored enterprises $ 14,978 $ 186 $ (3) $ 15,161 Obligations of states and political subdivisions 335,271 8,994 (33) 344,232 Agency mortgage-backed securities 506,703 20,190 (321) 526,572 U.S. Treasury Bills 10,980 486 — 11,466 Corporate debt securities 14,750 248 — 14,998 Total securities available for sale $ 882,682 $ 30,104 $ (357) $ 912,429 Held-to-maturity securities: Obligations of states and political subdivisions $ 248,324 $ 2,814 $ — $ 251,138 Agency mortgage-backed securities 112,742 2,295 (496) 114,541 Corporate debt securities 126,993 8,851 — 135,844 Total securities held to maturity $ 488,059 $ 13,960 $ (496) $ 501,523 Less: Allowance for credit losses 449 Total securities held-to-maturity, net $ 487,610
Investments Classified by Contractual Maturity Date	The amortized cost and estimated fair value of debt securities at March 31, 2021, by contractual maturity, are shown below. Expected maturities may differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment penalties. The weighted average life of the mortgage-backed securities is approximately 3 years. Available for sale Held to maturity (in thousands) Amortized Cost Estimated Fair Value Amortized Cost Estimated Fair Value Due in one year or less $ 11,176 $ 11,316 $ — $ — Due after one year through five years 23,972 24,517 12,733 13,109 Due after five years through ten years 32,875 33,175 132,553 135,497 Due after ten years 385,280 384,571 225,445 223,742 Agency mortgage-backed securities 477,151 492,081 96,777 97,751 $ 930,454 $ 945,660 $ 467,508 $ 470,099
Schedule of Unrealized Loss on Investments	The following tables presents a summary of available-for-sale investment securities in an unrealized loss position: March 31, 2021 Less than 12 months 12 months or more Total (in thousands) Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Obligations of U.S. Government-sponsored enterprises $ 13,324 $ 176 $ — $ — $ 13,324 $ 176 Obligations of states and political subdivisions $ 222,901 $ 3,662 $ — $ — $ 222,901 $ 3,662 Agency mortgage-backed securities 89,591 1,911 — — 89,591 1,911 Corporate debt securities 4,493 7 — — 4,493 7 $ 330,309 $ 5,756 $ — $ — $ 330,309 $ 5,756 December 31, 2020 Less than 12 months 12 months or more Total (in thousands) Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Obligations of U.S. Government-sponsored enterprises $ 4,997 $ 3 $ — $ — $ 4,997 $ 3 Obligations of states and political subdivisions $ 4,079 $ 33 $ — $ — $ 4,079 $ 33 Agency mortgage-backed securities 65,986 321 — — 65,986 321 $ 75,062 $ 357 $ — $ — $ 75,062 $ 357

Loans (Tables)

Loans (Tables)	3 Months Ended
	Mar. 31, 2021
Non-covered Loans [Line Items]
Summary of Recorded Investment by Risk Category of Portfolio Loans by Portfolio Class and Category	The recorded investment by risk category of the loans by class at March 31, 2021, which is based upon the most recent analysis performed is as follows: Term Loans by Origination Year (in thousands) 2021 2020 2019 2018 2017 Prior Revolving Loans Converted to Term Loans Revolving Loans Total Commercial and industrial Pass (1-6) $ 510,640 $ 1,044,599 $ 403,420 $ 196,752 $ 121,210 $ 65,492 $ 8,432 $ 515,327 $ 2,865,872 Watch (7) 20,506 34,164 8,303 15,706 4,378 15,002 191 57,994 156,244 Classified (8-9) 3,731 6,220 9,270 2,823 354 1,761 407 19,277 43,843 Total Commercial and industrial $ 534,877 $ 1,084,983 $ 420,993 $ 215,281 $ 125,942 $ 82,255 $ 9,030 $ 592,598 $ 3,065,959 Commercial real estate-investor owned Pass (1-6) $ 125,834 $ 471,216 $ 351,386 $ 195,605 $ 129,903 $ 252,747 $ 3,712 $ 38,880 $ 1,569,283 Watch (7) 2,782 32,554 13,017 6,588 — 24,282 — — 79,223 Classified (8-9) — 6,012 5,300 6,651 — 2,746 — — 20,709 Total Commercial real estate-investor owned $ 128,616 $ 509,782 $ 369,703 $ 208,844 $ 129,903 $ 279,775 $ 3,712 $ 38,880 $ 1,669,215 Commercial real estate-owner occupied Pass (1-6) $ 88,848 $ 422,455 $ 253,188 $ 205,203 $ 161,983 $ 258,470 $ — $ 42,003 $ 1,432,150 Watch (7) 2,111 8,967 5,212 17,006 6,130 9,732 — 1,752 50,910 Classified (8-9) 383 1,794 7,595 5,976 7,726 11,158 — 63 34,695 Total Commercial real estate-owner occupied $ 91,342 $ 433,216 $ 265,995 $ 228,185 $ 175,839 $ 279,360 $ — $ 43,818 $ 1,517,755 Construction real estate Pass (1-6) $ 76,142 $ 180,898 $ 120,004 $ 30,559 $ 7,843 $ 15,954 $ — $ 24,405 $ 455,805 Watch (7) 16,333 62 85 20,748 11,287 2,468 — — 50,983 Classified (8-9) — 55 3,030 499 — 29 — 100 3,713 Total Construction real estate $ 92,475 $ 181,015 $ 123,119 $ 51,806 $ 19,130 $ 18,451 $ — $ 24,505 $ 510,501 Residential real estate Pass (1-6) $ 15,166 $ 56,188 $ 23,567 $ 15,421 $ 14,844 $ 109,575 $ 112 $ 57,997 $ 292,870 Watch (7) — 313 801 513 — 1,725 — 379 3,731 Classified (8-9) 220 887 717 77 14 3,543 — 72 5,530 Total residential real estate $ 15,386 $ 57,388 $ 25,085 $ 16,011 $ 14,858 $ 114,843 $ 112 $ 58,448 $ 302,131 Other Pass (1-6) $ 33,630 $ 56,052 $ 21,753 $ 27,503 $ 9,290 $ 25,300 $ — $ 31,640 $ 205,168 Watch (7) — — 1 7 — 2,588 — 5 2,601 Classified (8-9) — — 16 18 1 23 — 1 59 Total Other $ 33,630 $ 56,052 $ 21,770 $ 27,528 $ 9,291 $ 27,911 $ — $ 31,646 $ 207,828 The following table presents the recorded investment on loans based on payment activity: March 31, 2021 (in thousands) Performing Non Performing Total Commercial and industrial $ 13,682 $ 2 $ 13,684 Real estate: Residential 916 — 916 Other 771 21 792 Total $ 15,369 $ 23 $ 15,392
Portfolio loans, net
Non-covered Loans [Line Items]
Summary of Portfolio Loans by Category	The following table presents a summary of loans by category: (in thousands) March 31, 2021 December 31, 2020 Commercial and industrial $ 3,096,319 $ 3,100,299 Real estate: Commercial - investor owned 1,669,215 1,589,419 Commercial - owner occupied 1,517,755 1,498,408 Construction and land development 510,501 546,686 Residential 303,047 319,179 Total real estate loans 4,000,518 3,953,692 Other 212,068 187,083 Loans, before unearned loan fees 7,308,905 7,241,074 Unearned loan fees, net (20,124) (16,139) Loans, including unearned loan fees $ 7,288,781 $ 7,224,935
Summary of Allowance for Loan Losses and the Recorded Investment in Portfolio Loans by Class and Category Based on Impairment Method	A summary of the activity in the ACL on loans by category for the three months ended March 31, 2021 is as follows: (in thousands) Commercial and industrial CRE - investor owned CRE - Construction and land development Residential real estate Other Total Allowance for credit losses on loans: Balance at December 31, 2020 $ 58,812 $ 32,062 $ 17,012 $ 21,413 $ 4,585 $ 2,787 $ 136,671 Provision for credit losses 541 3,381 3,226 (7,091) (152) 598 503 Charge-offs (3,739) (2,372) (28) — (271) (64) (6,474) Recoveries 327 34 9 235 143 79 827 Balance at March 31, 2021 $ 55,941 $ 33,105 $ 20,219 $ 14,557 $ 4,305 $ 3,400 $ 131,527 The ACL on sponsor finance loans, which is included in the categories above, represented $19.7 million and $19.0 million, respectively, as of March 31, 2021 and December 31, 2020. A summary of the activity in the ACL on loans by category for the three months ended March 31, 2020 is as follows: (in thousands) Commercial and industrial CRE - investor owned CRE - Construction and land development Residential real estate Other Total Allowance for credit losses on loans: Balance at December 31, 2019 $ 27,455 $ 5,935 $ 4,873 $ 2,611 $ 1,280 $ 1,134 $ 43,288 CECL adoption 6,494 10,726 2,598 5,183 3,470 (84) 28,387 PCD loans immediately charged off — (5) (57) (217) (1,401) — (1,680) Balance at January 1, 2020 $ 33,949 $ 16,656 $ 7,414 $ 7,577 $ 3,349 $ 1,050 $ 69,995 Provision for credit losses 11,591 3,224 1,994 2,309 2,011 566 21,695 Charge-offs (63) (2) — (31) (122) (86) (304) Recoveries 504 14 69 40 157 17 801 Balance at March 31, 2020 $ 45,981 $ 19,892 $ 9,477 $ 9,895 $ 5,395 $ 1,547 $ 92,187
Financing Receivable, Noncurrent, Allowance for Credit Loss	A summary of the activity in the ACL on loans by category for the three months ended March 31, 2021 is as follows: (in thousands) Commercial and industrial CRE - investor owned CRE - Construction and land development Residential real estate Other Total Allowance for credit losses on loans: Balance at December 31, 2020 $ 58,812 $ 32,062 $ 17,012 $ 21,413 $ 4,585 $ 2,787 $ 136,671 Provision for credit losses 541 3,381 3,226 (7,091) (152) 598 503 Charge-offs (3,739) (2,372) (28) — (271) (64) (6,474) Recoveries 327 34 9 235 143 79 827 Balance at March 31, 2021 $ 55,941 $ 33,105 $ 20,219 $ 14,557 $ 4,305 $ 3,400 $ 131,527 The ACL on sponsor finance loans, which is included in the categories above, represented $19.7 million and $19.0 million, respectively, as of March 31, 2021 and December 31, 2020. A summary of the activity in the ACL on loans by category for the three months ended March 31, 2020 is as follows: (in thousands) Commercial and industrial CRE - investor owned CRE - Construction and land development Residential real estate Other Total Allowance for credit losses on loans: Balance at December 31, 2019 $ 27,455 $ 5,935 $ 4,873 $ 2,611 $ 1,280 $ 1,134 $ 43,288 CECL adoption 6,494 10,726 2,598 5,183 3,470 (84) 28,387 PCD loans immediately charged off — (5) (57) (217) (1,401) — (1,680) Balance at January 1, 2020 $ 33,949 $ 16,656 $ 7,414 $ 7,577 $ 3,349 $ 1,050 $ 69,995 Provision for credit losses 11,591 3,224 1,994 2,309 2,011 566 21,695 Charge-offs (63) (2) — (31) (122) (86) (304) Recoveries 504 14 69 40 157 17 801 Balance at March 31, 2020 $ 45,981 $ 19,892 $ 9,477 $ 9,895 $ 5,395 $ 1,547 $ 92,187
Summary of Portfolio Loans Individually Evaluated for Impairment and Recorded Investment in Impaired Non-Covered Loans by Category	The following tables present the recorded investment in nonperforming loans by category: March 31, 2021 (in thousands) Nonaccrual Restructured, accruing Loans over 90 days past due and still accruing interest Total nonperforming loans Nonaccrual loans with no allowance Commercial and industrial $ 18,372 $ 3,243 $ 893 $ 22,508 $ 8,239 Real estate: Commercial - investor owned 7,379 — — 7,379 455 Commercial - owner occupied 2,589 — — 2,589 2,331 Construction and land development — — — — — Residential 3,868 77 — 3,945 2,795 Other 17 — 221 238 — Total $ 32,225 $ 3,320 $ 1,114 $ 36,659 $ 13,820 December 31, 2020 (in thousands) Nonaccrual Restructured, accruing Loans over 90 days past due and still accruing interest Total nonperforming loans Nonaccrual loans with no allowance Commercial and industrial $ 18,158 $ 3,482 $ 130 $ 21,770 $ 8,316 Real estate: Commercial - investor owned 9,579 — — 9,579 716 Commercial - owner occupied 2,940 — — 2,940 6,024 Residential 4,112 77 — 4,189 — Other 29 — — 29 3,190 Total $ 34,818 $ 3,559 $ 130 $ 38,507 $ 18,246 No interest income was recognized on nonaccrual loans during the three months ended March 31, 2021 or 2020. The following table presents the amortized cost basis of collateral-dependent nonperforming loans by class of loan at March 31, 2021: Type of Collateral (in thousands) Commercial Real Estate Residential Real Estate Blanket Lien Other Commercial and industrial $ 10,737 $ — $ 3,064 $ — Real estate: Commercial - investor owned 7,155 — — — Commercial - owner occupied 2,387 — — — Residential — 3,891 — — Other — — — 215 Total $ 20,279 $ 3,891 $ 3,064 $ 215
Summary of Recorded Investment by Category for Portfolio Loans Restructured	The following table presents the amortized cost basis of collateral-dependent nonperforming loans by class of loan at March 31, 2021: Type of Collateral (in thousands) Commercial Real Estate Residential Real Estate Blanket Lien Other Commercial and industrial $ 10,737 $ — $ 3,064 $ — Real estate: Commercial - investor owned 7,155 — — — Commercial - owner occupied 2,387 — — — Residential — 3,891 — — Other — — — 215 Total $ 20,279 $ 3,891 $ 3,064 $ 215 There were no loans restructured during the three months ended March 31, 2021. The recorded investment by category for troubled debt restructurings that occurred during the three months ended March 31, 2020 are as follows: March 31, 2020 (in thousands, except for number of loans) Number of loans Pre-Modification Outstanding Recorded Balance Post-Modification Outstanding Recorded Balance Commercial and industrial 1 $ 3,731 $ 3,731 Real estate: Residential 2 155 155 Total 3 $ 3,886 $ 3,886
Summary of Recorded Investment by Category for Portfolio Loans Restructured and Subsequently Defaulted	No troubled debt restructurings subsequently defaulted during the three months ended March 31, 2021 or 2020.
Summary of Aging of Recorded Investment in Past Due Portfolio Loans by Portfolio Class and Category	The aging of the recorded investment in past due loans by class at March 31, 2021 is shown below. March 31, 2021 (in thousands) 30-89 Days 90 or More Total Current Total Commercial and industrial $ 25,976 $ 17,091 $ 43,067 $ 3,036,576 $ 3,079,643 Real estate: Commercial - investor owned 768 6,700 7,468 1,661,747 1,669,215 Commercial - owner occupied 312 3,987 4,299 1,513,456 1,517,755 Construction and land development 400 — 400 510,101 510,501 Residential 2,371 1,090 3,461 299,586 303,047 Other 486 237 723 207,897 208,620 Total $ 30,313 $ 29,105 $ 59,418 $ 7,229,363 $ 7,288,781
Summary of Recorded Investment by Risk Category of Portfolio Loans by Portfolio Class and Category	The recorded investment by risk category of the loans by class at March 31, 2021, which is based upon the most recent analysis performed is as follows: Term Loans by Origination Year (in thousands) 2021 2020 2019 2018 2017 Prior Revolving Loans Converted to Term Loans Revolving Loans Total Commercial and industrial Pass (1-6) $ 510,640 $ 1,044,599 $ 403,420 $ 196,752 $ 121,210 $ 65,492 $ 8,432 $ 515,327 $ 2,865,872 Watch (7) 20,506 34,164 8,303 15,706 4,378 15,002 191 57,994 156,244 Classified (8-9) 3,731 6,220 9,270 2,823 354 1,761 407 19,277 43,843 Total Commercial and industrial $ 534,877 $ 1,084,983 $ 420,993 $ 215,281 $ 125,942 $ 82,255 $ 9,030 $ 592,598 $ 3,065,959 Commercial real estate-investor owned Pass (1-6) $ 125,834 $ 471,216 $ 351,386 $ 195,605 $ 129,903 $ 252,747 $ 3,712 $ 38,880 $ 1,569,283 Watch (7) 2,782 32,554 13,017 6,588 — 24,282 — — 79,223 Classified (8-9) — 6,012 5,300 6,651 — 2,746 — — 20,709 Total Commercial real estate-investor owned $ 128,616 $ 509,782 $ 369,703 $ 208,844 $ 129,903 $ 279,775 $ 3,712 $ 38,880 $ 1,669,215 Commercial real estate-owner occupied Pass (1-6) $ 88,848 $ 422,455 $ 253,188 $ 205,203 $ 161,983 $ 258,470 $ — $ 42,003 $ 1,432,150 Watch (7) 2,111 8,967 5,212 17,006 6,130 9,732 — 1,752 50,910 Classified (8-9) 383 1,794 7,595 5,976 7,726 11,158 — 63 34,695 Total Commercial real estate-owner occupied $ 91,342 $ 433,216 $ 265,995 $ 228,185 $ 175,839 $ 279,360 $ — $ 43,818 $ 1,517,755 Construction real estate Pass (1-6) $ 76,142 $ 180,898 $ 120,004 $ 30,559 $ 7,843 $ 15,954 $ — $ 24,405 $ 455,805 Watch (7) 16,333 62 85 20,748 11,287 2,468 — — 50,983 Classified (8-9) — 55 3,030 499 — 29 — 100 3,713 Total Construction real estate $ 92,475 $ 181,015 $ 123,119 $ 51,806 $ 19,130 $ 18,451 $ — $ 24,505 $ 510,501 Residential real estate Pass (1-6) $ 15,166 $ 56,188 $ 23,567 $ 15,421 $ 14,844 $ 109,575 $ 112 $ 57,997 $ 292,870 Watch (7) — 313 801 513 — 1,725 — 379 3,731 Classified (8-9) 220 887 717 77 14 3,543 — 72 5,530 Total residential real estate $ 15,386 $ 57,388 $ 25,085 $ 16,011 $ 14,858 $ 114,843 $ 112 $ 58,448 $ 302,131 Other Pass (1-6) $ 33,630 $ 56,052 $ 21,753 $ 27,503 $ 9,290 $ 25,300 $ — $ 31,640 $ 205,168 Watch (7) — — 1 7 — 2,588 — 5 2,601 Classified (8-9) — — 16 18 1 23 — 1 59 Total Other $ 33,630 $ 56,052 $ 21,770 $ 27,528 $ 9,291 $ 27,911 $ — $ 31,646 $ 207,828 In the table above, loan originations in 2021 and 2020 with a classification of watch or classified primarily represent renewals or modifications initially underwritten and originated in prior years. For certain loans, primarily credit cards, the Company evaluates credit quality based on the aging status. The following table presents the recorded investment on loans based on payment activity: March 31, 2021 (in thousands) Performing Non Performing Total Commercial and industrial $ 13,682 $ 2 $ 13,684 Real estate: Residential 916 — 916 Other 771 21 792 Total $ 15,369 $ 23 $ 15,392

Commitments (Tables)

Commitments (Tables)	3 Months Ended
	Mar. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Schedule of Commitments	The contractual amounts of off-balance-sheet financial instruments are as follows: (in thousands) March 31, 2021 December 31, 2020 Commitments to extend credit $ 2,043,850 $ 1,946,068 Letters of credit 58,093 50,971

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	3 Months Ended
	Mar. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Schedule of Derivative Instruments in Statement of Financial Position, Fair Value	Notional Amount Derivative Assets Derivative Liabilities (in thousands) March 31, 2021 December 31, 2020 March 31, 2021 December 31, 2020 March 31, 2021 December 31, 2020 Derivatives Designated as Hedging Instruments: Interest rate swap $ 61,962 $ 61,962 $ — $ — $ 4,488 $ 5,987 Derivatives not Designated as Hedging Instruments: Interest rate swap $ 1,007,417 $ 1,026,016 $ 20,271 $ 28,703 $ 20,311 $ 28,980 Derivative assets are classified on the balance sheet in other assets. Derivative liabilities are classified on the balance sheet in other liabilities. The table below presents a gross presentation, the effects of offsetting, and a net presentation of the Company’s financial instruments that are subject to offsetting. The gross amounts of assets or liabilities can be reconciled to the tabular disclosure of fair value. The fair value table above provides the location that financial assets and liabilities are presented on the Balance Sheet. As of March 31, 2021 Gross Amounts Not Offset in the Statement of Financial Position (in thousands) Gross Amounts Recognized Gross Amounts Offset in the Statement of Financial Position Net Amounts of Assets presented in the Statement of Financial Position Financial Instruments Fair Value Collateral Posted Net Amount Assets: Interest rate swap $ 20,271 $ — $ 20,271 $ 1,322 $ — $ 18,949 Liabilities: Interest rate swap $ 24,799 $ — $ 24,799 $ 1,322 $ 23,090 $ 387 Securities sold under agreements to repurchase 202,246 — 202,246 — 202,246 — As of December 31, 2020 Gross Amounts Not Offset in the Statement of Financial Position (in thousands) Gross Amounts Recognized Gross Amounts Offset in the Statement of Financial Position Net Amounts of Assets presented in the Statement of Financial Position Financial Instruments Fair Value Collateral Posted Net Amount Assets: Interest rate swap $ 28,703 $ — $ 28,703 $ 2 $ — $ 28,701 Liabilities: Interest rate swap $ 34,967 $ — $ 34,967 $ 2 $ 34,903 $ 62 Securities sold under agreements to repurchase 271,081 — 271,081 — 271,081 —

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2021
Fair Value Disclosures [Abstract]
Summary of Financial Instruments Measured at Fair Value on a Recurring Basis	The following table summarizes financial instruments measured at fair value on a recurring basis segregated by the level of the valuation inputs within the fair value hierarchy utilized to measure fair value: March 31, 2021 (in thousands) Quoted Prices in Significant Significant Total Fair Assets Securities available for sale Obligations of U.S. Government-sponsored enterprises $ — $ 23,445 $ — $ 23,445 Obligations of states and political subdivisions — 403,557 — 403,557 Agency mortgage-backed securities — 492,081 — 492,081 U.S. Treasury bills — 11,409 — 11,409 Corporate debt securities — 15,168 — 15,168 Total securities available for sale — 945,660 — 945,660 Derivatives — 20,271 — 20,271 Total assets $ — $ 965,931 $ — $ 965,931 Liabilities Derivatives $ — $ 24,799 $ — $ 24,799 Total liabilities $ — $ 24,799 $ — $ 24,799 December 31, 2020 (in thousands) Quoted Prices in Significant Significant Total Fair Assets Securities available for sale Obligations of U.S. Government-sponsored enterprises $ — $ 15,161 $ — $ 15,161 Obligations of states and political subdivisions — 344,232 — 344,232 Residential mortgage-backed securities — 526,572 — 526,572 Corporate debt securities — 14,998 — 14,998 U.S. Treasury bills — 11,466 — 11,466 Total securities available-for-sale — 912,429 — 912,429 Derivative financial instruments — 28,703 — 28,703 Total assets $ — $ 941,132 $ — $ 941,132 Liabilities Derivatives $ — $ 34,967 $ — $ 34,967 Total liabilities $ — $ 34,967 $ — $ 34,967
Summary of Financial Instruments and Non-Financial Assets Measured at Fair Value on a Non-Recurring Basis	These include assets measured at the lower of cost or fair value that were recognized at fair value below cost at the end of the period. March 31, 2021 (in thousands) Total Fair Value Quoted Prices in Active Significant Significant Nonaccrual loans (1) $ 2,503 $ — $ — $ 2,503 (1) The amounts represent only balances measured at fair value during the period and still held as of the reporting date. The following table presents the losses recorded in relation to assets measured on a nonrecurring basis and still held as of the reporting date. Three months ended (in thousands) March 31, 2021 March 31, 2020 Nonaccrual loans $ 1,742 $ 11 Other real estate — 777 Total $ 1,742 $ 788
Summary of Carrying Amount and Fair Values of Financial Instruments Reported on the Balance Sheets	Following is a summary of the carrying amounts and fair values of certain financial instruments: March 31, 2021 December 31, 2020 (in thousands) Carrying Amount Estimated fair value Level Carrying Amount Estimated fair value Level Balance sheet assets Securities held-to-maturity, net $ 467,059 $ 470,099 Level 2 $ 487,610 $ 501,523 Level 2 Other investments 51,099 51,099 Level 2 48,764 48,764 Level 2 Loans held for sale 8,531 8,531 Level 2 13,564 13,564 Level 2 Loans, net 7,157,254 7,099,662 Level 3 7,088,264 7,067,562 Level 3 State tax credits, held for sale 34,287 37,802 Level 3 36,853 39,925 Level 3 Balance sheet liabilities Certificates of deposit $ 521,351 $ 525,000 Level 3 $ 550,095 $ 553,946 Level 3 Subordinated debentures and notes 203,778 193,071 Level 2 203,637 192,889 Level 2 FHLB advances 50,000 51,694 Level 2 50,000 51,871 Level 2 Other borrowings and notes payable 229,389 229,389 Level 2 301,081 301,081 Level 2

SHAREHOLDERS_ EQUITY AND COMP_2

SHAREHOLDERS’ EQUITY AND COMPENSATION PLANS (Tables)	3 Months Ended
	Mar. 31, 2021
Equity [Abstract]
Schedule of Accumulated Other Comprehensive Income (Loss)	The following tables present the changes in accumulated other comprehensive income after-tax by component: Three months ended March 31, 2021 (in thousands) Net Unrealized Gain (Loss) on Available-for-Sale Debt Securities Unamortized Gain (Loss) on Held-to-Maturity Securities Net Unrealized Loss on Cash Flow Hedges Total Balance, December 31, 2020 $ 22,320 $ 19,308 $ (4,508) $ 37,120 Net change $ (10,920) $ (1,149) $ 1,126 $ (10,943) Balance, March 31, 2021 $ 11,400 $ 18,159 $ (3,382) $ 26,177 Three months ended March 31, 2020 (in thousands) Net Unrealized Gain (Loss) on Available-for-Sale Debt Securities Unamortized Gain (Loss) on Held-to-Maturity Securities Net Unrealized Loss on Cash Flow Hedges Total Balance, December 31, 2019 $ 14,977 $ 4,934 $ (2,162) $ 17,749 Net change $ 10,561 $ (156) $ (5,057) $ 5,348 Balance, March 31, 2020 $ 25,538 $ 4,778 $ (7,219) $ 23,097
Schedule of Pre-tax and After-tax Changes in the Components of Other Comprehensive Income	The following tables present the pre-tax and after-tax changes in the components of other comprehensive income: Three months ended March 31, (in thousands) 2021 2020 Pre-tax Tax effect After-tax Pre-tax Tax effect After-tax Change in unrealized gain (loss) on available-for-sale debt securities $ (14,541) $ (3,621) $ (10,920) $ 14,029 $ 3,465 $ 10,564 Reclassification adjustment for realized gain on sale of available-for-sale debt securities (a) — — — (4) (1) (3) Reclassification of gain on held-to-maturity securities (b) (1,530) (381) (1,149) (207) (51) (156) Change in unrealized gain (loss) on cash flow hedges arising during the period 1,128 281 847 (6,879) (1,699) (5,180) Reclassification of loss on cash flow hedges (b) 372 93 279 163 40 123 Total other comprehensive income $ (14,571) $ (3,628) $ (10,943) $ 7,102 $ 1,754 $ 5,348 (a) The pre-tax amount is reported in noninterest income/expense in the Consolidated Statements of Operations (b) The pre-tax amount is reported in interest income/expense in the Consolidated Statements of Operations
Schedule of Stock Options Roll Forward	During the three months ended March 31, 2021, employee stock options were granted under the Amended and Restated 2018 Stock Incentive Plan. Various information related to the stock options is shown below. Employee Stock Options Weighted Average Life Weighted Average Price Shares Exercisable Weighted Average Exercise Price Options Outstanding, December 31, 2020 — Options granted 111,804 9.9 $ 43.81 — $ — Options Outstanding, March 31, 2021 111,804

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Earnings Per Share [Abstract]
Net income as reported	$ 29,926	$ 12,868
Weighted average common shares outstanding (in shares)	31,247,000	26,473,000
Additional dilutive common stock equivalents (in shares)	59,000	66,000
Weighted average diluted common shares outstanding (in shares)	31,306,000	26,539,000
Basic earnings per common share (in dollars per share)	$ 0.96	$ 0.49
Diluted earnings per common share (in dollars per share)	$ 0.96	$ 0.48
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount	222,000	62,000

Investments - Schedule of Avail

Investments - Schedule of Available-for-sale and Held-to-Maturity Securities Reconciliation (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Debt Securities, Held-to-maturity [Abstract]
Amortized Cost	$ 467,508	$ 488,059
Gross Unrealized Gains	5,540	13,960
Gross Unrealized Losses	(2,949)	(496)
Allowance for Credit Losses	449	449
Fair Value	470,099	501,523
Total securities held-to-maturity, net	467,059	487,610
Debt Securities, Available-for-sale [Abstract]
Amortized Cost	930,454	882,682
Gross Unrealized Gains	20,962	30,104
Gross Unrealized Losses	(5,756)	(357)
Fair Value	945,660	912,429
Obligations of U.S. Government-sponsored enterprises
Debt Securities, Available-for-sale [Abstract]
Amortized Cost	23,484	14,978
Gross Unrealized Gains	137	186
Gross Unrealized Losses	(176)	(3)
Fair Value	23,445	15,161
Obligations of states and political subdivisions
Debt Securities, Held-to-maturity [Abstract]
Amortized Cost	244,030	248,324
Gross Unrealized Gains	900	2,814
Gross Unrealized Losses	(2,491)	0
Fair Value	242,439	251,138
Debt Securities, Available-for-sale [Abstract]
Amortized Cost	404,087	335,271
Gross Unrealized Gains	3,132	8,994
Gross Unrealized Losses	(3,662)	(33)
Fair Value	403,557	344,232
Agency mortgage-backed securities
Debt Securities, Held-to-maturity [Abstract]
Amortized Cost	96,777	112,742
Gross Unrealized Gains	1,432	2,295
Gross Unrealized Losses	(458)	(496)
Fair Value	97,751	114,541
Debt Securities, Available-for-sale [Abstract]
Amortized Cost	477,151	506,703
Gross Unrealized Gains	16,841	20,190
Gross Unrealized Losses	(1,911)	(321)
Fair Value	492,081	526,572
U.S. Treasury bills
Debt Securities, Available-for-sale [Abstract]
Amortized Cost	10,982	10,980
Gross Unrealized Gains	427	486
Gross Unrealized Losses	0	0
Fair Value	11,409	11,466
Corporate debt securities
Debt Securities, Held-to-maturity [Abstract]
Amortized Cost	126,701	126,993
Gross Unrealized Gains	3,208	8,851
Gross Unrealized Losses	0	0
Fair Value	129,909	135,844
Debt Securities, Available-for-sale [Abstract]
Amortized Cost	14,750	14,750
Gross Unrealized Gains	425	248
Gross Unrealized Losses	(7)	0
Fair Value	$ 15,168	$ 14,998

Investments - Investments Class

Investments - Investments Classified by Contractual Maturity Date (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Available for sale, Amortized Cost
Due in one year or less	$ 11,176
Due after one year through five years	23,972
Due after five years through ten years	32,875
Due after ten years	385,280
Agency mortgage-backed securities	477,151
Amortized Cost	930,454	$ 882,682
Available for sale, Estimated Fair Value
Due in one year or less	11,316
Due after one year through five years	24,517
Due after five years through ten years	33,175
Due after ten years	384,571
Agency mortgage-backed securities	492,081
Available for sale, fair value	945,660	912,429
Held to maturity, Amortized Cost
Due in one year or less	0
Due after one year through five years	12,733
Due after five years through ten years	132,553
Due after ten years	225,445
Agency mortgage-backed securities	96,777
Amortized Cost	467,508	488,059
Held to maturity, Estimated Fair Value
Due in one year or less	0
Due after one year through five years	13,109
Due after five years through ten years	135,497
Due after ten years	223,742
Agency mortgage-backed securities	97,751
Held to maturity, fair value	$ 470,099	$ 501,523

Investments - Schedule of Unrea

Investments - Schedule of Unrealized Loss on Investments (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	$ 330,309	$ 75,062
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	5,756	357
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Debt Securities, Available-for-sale, Unrealized Loss Position	330,309	75,062
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	5,756	357
Obligations of U.S. Government-sponsored enterprises
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	13,324	4,997
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	176	3
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Debt Securities, Available-for-sale, Unrealized Loss Position	13,324	4,997
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	176	3
Obligations of states and political subdivisions
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	222,901	4,079
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	3,662	33
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Debt Securities, Available-for-sale, Unrealized Loss Position	222,901	4,079
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	3,662	33
Agency mortgage-backed securities
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	89,591	65,986
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	1,911	321
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	0	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0	0
Debt Securities, Available-for-sale, Unrealized Loss Position	89,591	65,986
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	1,911	$ 321
Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months	4,493
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Accumulated Loss	7
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Accumulated Loss	0
Debt Securities, Available-for-sale, Unrealized Loss Position	4,493
Debt Securities, Available-for-sale, Unrealized Loss Position, Accumulated Loss	$ 7

Investments - Narrative (Detail

Investments - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Debt Securities, Available-for-sale, Amortized Cost	$ 930,454		$ 882,682
Securities available for sale	$ 945,660		$ 912,429
Maximum percentage of shareholders' equity security holdings held of one issuer	10.00%		10.00%
Securities pledged	$ 465,900		$ 525,800
Mortgage-backed securities, weighted average life	3 years
Accrued interest receivable, held-to-maturity securities	$ 3,500
Allowance for credit losses on held-to-maturity debt securities	449		449
Proceeds from sales		$ 207
Gross gains realized		$ 4
Other investments, at cost	51,099		48,764
Des Moines
Debt Securities, Available-for-sale [Line Items]
Other investments, at cost	$ 12,000		$ 10,800

Loans - Summary of Portfolio Lo

Loans - Summary of Portfolio Loans by Category (Details) - Portfolio loans, net - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, before unearned loan fees	$ 7,308,905	$ 7,241,074
Unearned loan fees, net	(20,124)	(16,139)
Loans, including unearned loan fees	7,288,781	7,224,935
Commercial and industrial
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, before unearned loan fees	3,096,319	3,100,299
Loans, including unearned loan fees	3,079,643
Commercial - investor owned
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, before unearned loan fees	1,669,215	1,589,419
Loans, including unearned loan fees	1,669,215
Commercial - owner occupied
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, before unearned loan fees	1,517,755	1,498,408
Loans, including unearned loan fees	1,517,755
Construction and land development
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, before unearned loan fees	510,501	546,686
Loans, including unearned loan fees	510,501
Residential
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, before unearned loan fees	303,047	319,179
Loans, including unearned loan fees	303,047
Total real estate loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, before unearned loan fees	4,000,518	3,953,692
Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Loans, before unearned loan fees	212,068	$ 187,083
Loans, including unearned loan fees	$ 208,620

Loans - Summary of Allowance fo

Loans - Summary of Allowance for Loan Losses by Portfolio Class and Category (Details) - Portfolio loans, net - USD ($) $ in Thousands	Dec. 31, 2019	Mar. 31, 2021	Mar. 31, 2020
Allowance for Loan Losses [Roll Forward]
Balance at December 31, 2020		$ 136,671	$ 43,288
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	$ 28,387
Provision for credit losses	(1,680)
Provision for Loan, Lease, and Other Losses		(503)	(21,695)
Charge-offs		(6,474)	(304)
Recoveries		827	801
Balance	43,288	131,527	92,187
Commercial and industrial
Allowance for Loan Losses [Roll Forward]
Balance at December 31, 2020		58,812	27,455
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	6,494
Provision for credit losses	0
Provision for Loan, Lease, and Other Losses		(541)	(11,591)
Charge-offs		(3,739)	(63)
Recoveries		327	504
Balance	27,455	55,941	45,981
CRE - investor owned
Allowance for Loan Losses [Roll Forward]
Balance at December 31, 2020		32,062	5,935
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	10,726
Provision for credit losses	(5)
Provision for Loan, Lease, and Other Losses		(3,381)	(3,224)
Charge-offs		(2,372)	(2)
Recoveries		34	14
Balance	5,935	33,105	19,892
CRE - owner occupied
Allowance for Loan Losses [Roll Forward]
Balance at December 31, 2020		17,012	4,873
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	2,598
Provision for credit losses	(57)
Provision for Loan, Lease, and Other Losses		(3,226)	(1,994)
Charge-offs		(28)	0
Recoveries		9	69
Balance	4,873	20,219	9,477
Construction and land development
Allowance for Loan Losses [Roll Forward]
Balance at December 31, 2020		21,413	2,611
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	5,183
Provision for credit losses	(217)
Provision for Loan, Lease, and Other Losses		7,091	(2,309)
Charge-offs		0	(31)
Recoveries		235	40
Balance	2,611	14,557	9,895
Residential real estate
Allowance for Loan Losses [Roll Forward]
Balance at December 31, 2020		4,585	1,280
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	3,470
Provision for credit losses	(1,401)
Provision for Loan, Lease, and Other Losses		152	(2,011)
Charge-offs		(271)	(122)
Recoveries		143	157
Balance	1,280	4,305	5,395
Other
Allowance for Loan Losses [Roll Forward]
Balance at December 31, 2020		2,787	1,134
Financing Receivable, Allowance for Credit Loss, Period Increase (Decrease)	(84)
Provision for credit losses	0
Provision for Loan, Lease, and Other Losses		(598)	(566)
Charge-offs		(64)	(86)
Recoveries		79	17
Balance	$ 1,134	$ 3,400	$ 1,547

Loans - Summary of Recorded Inv

Loans - Summary of Recorded Investment in Portfolio Loans by Class and Category Based on Impairment Method (Details) - Portfolio loans, net $ in Thousands	3 Months Ended
	Mar. 31, 2021USD ($)loan	Mar. 31, 2020USD ($)loan	Dec. 31, 2020USD ($)	Jan. 01, 2020USD ($)	Dec. 31, 2019USD ($)
Summary of Recorded Investment in Non-covered Loans by Portfolio Class and Category Based on Impairment Method [Line Items]
Financing Receivable, Modifications, Number of Contracts | loan		3
Financing Receivable, Troubled Debt Restructuring, Postmodification		$ 3,886
Financing Receivable, Troubled Debt Restructuring, Premodification		3,886
Total	$ 131,527	92,187	$ 136,671	$ 69,995	$ 43,288
Loans - Ending balance:
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums	(20,124)		(16,139)
Total	$ 7,308,905		7,241,074
Commercial and industrial
Summary of Recorded Investment in Non-covered Loans by Portfolio Class and Category Based on Impairment Method [Line Items]
Financing Receivable, Modifications, Number of Contracts | loan	1
Financing Receivable, Troubled Debt Restructuring, Postmodification	$ 3,731
Financing Receivable, Troubled Debt Restructuring, Premodification	3,731
Total	55,941	45,981	58,812	33,949	27,455
Loans - Ending balance:
Total	3,096,319		3,100,299
CRE - investor owned
Summary of Recorded Investment in Non-covered Loans by Portfolio Class and Category Based on Impairment Method [Line Items]
Total	33,105	19,892	32,062	16,656	5,935
Loans - Ending balance:
Total	1,669,215		1,589,419
CRE - owner occupied
Summary of Recorded Investment in Non-covered Loans by Portfolio Class and Category Based on Impairment Method [Line Items]
Total	20,219	9,477	17,012	7,414	4,873
Loans - Ending balance:
Total	1,517,755		1,498,408
Construction and land development
Summary of Recorded Investment in Non-covered Loans by Portfolio Class and Category Based on Impairment Method [Line Items]
Total	14,557	$ 9,895	21,413	7,577	2,611
Loans - Ending balance:
Total	510,501		546,686
Residential real estate
Summary of Recorded Investment in Non-covered Loans by Portfolio Class and Category Based on Impairment Method [Line Items]
Financing Receivable, Modifications, Number of Contracts | loan		2
Financing Receivable, Troubled Debt Restructuring, Postmodification		$ 155
Financing Receivable, Troubled Debt Restructuring, Premodification		155
Total	4,305	5,395	4,585	3,349	1,280
Loans - Ending balance:
Total	303,047		319,179
Other
Summary of Recorded Investment in Non-covered Loans by Portfolio Class and Category Based on Impairment Method [Line Items]
Total	3,400	$ 1,547	2,787	$ 1,050	$ 1,134
Loans - Ending balance:
Total	$ 212,068		$ 187,083

Loans - Summary of Portfolio _2

Loans - Summary of Portfolio Loans Individually Evaluated for Impairment by Category (Details) - Portfolio loans, net - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020	Jan. 01, 2020	Dec. 31, 2019
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	$ 13,820
Total Recorded Investment	36,659		$ 38,507
Financing Receivable, Allowance for Credit Loss, Writeoff	(6,474)	$ (304)
Financing Receivable, Allowance for Credit Loss, Recovery	827	801
Financing receivable, allowance for credit loss	131,527	92,187	136,671	$ 69,995	$ 43,288
Commercial and industrial
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	8,239		8,316
Total Recorded Investment	22,508		21,770
Financing Receivable, Allowance for Credit Loss, Writeoff	(3,739)	(63)
Financing Receivable, Allowance for Credit Loss, Recovery	327	504
Financing receivable, allowance for credit loss	55,941	45,981	58,812	33,949	27,455
Commercial - investor owned
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	455		716
Total Recorded Investment	7,379		9,579
Financing Receivable, Allowance for Credit Loss, Writeoff	(2,372)	(2)
Financing Receivable, Allowance for Credit Loss, Recovery	34	14
Financing receivable, allowance for credit loss	33,105	19,892	32,062	16,656	5,935
Commercial - owner occupied
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	2,331		6,024
Total Recorded Investment	2,589		2,940
Financing Receivable, Allowance for Credit Loss, Writeoff	(28)	0
Financing Receivable, Allowance for Credit Loss, Recovery	9	69
Financing receivable, allowance for credit loss	20,219	9,477	17,012	7,414	4,873
Construction and land development
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	0		0
Total Recorded Investment	0
Financing Receivable, Allowance for Credit Loss, Writeoff	0	(31)
Financing Receivable, Allowance for Credit Loss, Recovery	235	40
Financing receivable, allowance for credit loss	14,557	9,895	21,413	7,577	2,611
Residential real estate
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	2,795		3,190
Total Recorded Investment	3,945		4,189
Financing Receivable, Allowance for Credit Loss, Writeoff	(271)	(122)
Financing Receivable, Allowance for Credit Loss, Recovery	143	157
Financing receivable, allowance for credit loss	4,305	5,395	4,585	3,349	1,280
Other
Financing Receivable, Impaired [Line Items]
Recorded Investment With No Allowance	0		18,246
Total Recorded Investment	238		29
Financing Receivable, Allowance for Credit Loss, Writeoff	(64)	(86)
Financing Receivable, Allowance for Credit Loss, Recovery	79	17
Financing receivable, allowance for credit loss	$ 3,400	$ 1,547	$ 2,787	$ 1,050	$ 1,134

Loans - Narrative (Details)

Loans - Narrative (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2021USD ($)	Mar. 31, 2020USD ($)loan	Dec. 31, 2020USD ($)	Jan. 01, 2020USD ($)	Dec. 31, 2019USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, Purchased with Credit Deterioration, Discount (Premium)	$ 17,700
Loans and Leases Receivable, Deferred Income	4,200
Federal Home Loan Bank, Advances, General Debt Obligations, Maximum Amount Available	2,700,000		$ 2,500,000
Financing Receivable, Paycheck Protection Program	754,400		709,900
Financing Receivable, Paycheck Protection Program, Net of Deferred Fees	737,700
Financing Receivable, Paycheck Protection Program, Unearned Fees	16,700
financing receivable, paycheck protection program, net of deferred fees			698,600
financing recievable, paycheck protection program, unearned fees			11,300
net premium, acquired loans			16,100
Financing Receivable, Amount Still in Deferral Status	21,100
Other Assets [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Accrued interest receivable	30,700
Non-Covered Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Post-Modification Outstanding Recorded Balance		$ 3,886
Financing Receivable, Modifications, Number of Contracts | loan		3
Restructuring Reserve	3,320		3,559
Financing Receivable, before Allowance for Credit Loss	7,308,905		7,241,074
Financing receivable, allowance for credit loss	131,527	$ 92,187	136,671	$ 69,995	$ 43,288
Non-Covered Loans | Enterprise Value Lending Portfolio Niche Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, allowance for credit loss	19,700
Non-Covered Loans | Other
Accounts, Notes, Loans and Financing Receivable [Line Items]
Restructuring Reserve	0		0
Financing Receivable, before Allowance for Credit Loss	212,068		187,083
Financing receivable, allowance for credit loss	3,400	$ 1,547	$ 2,787	$ 1,050	$ 1,134
Non-Covered Loans | Agriculture Portfolio Niche Segment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, allowance for credit loss	19,000
Cumulative Effect, Period Of Adoption, Adjustment | Non-Covered Loans
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing receivable, allowance for credit loss	$ 5,400

Loans - Summary of Recorded I_2

Loans - Summary of Recorded Investment in Impaired Portfolio Loans by Category (Details) - Non-Covered Loans $ in Thousands	3 Months Ended
	Mar. 31, 2021USD ($)loan	Mar. 31, 2020loan	Dec. 31, 2020USD ($)
Financing Receivable, Past Due [Line Items]
Total Recorded Investment	$ 36,659		$ 38,507
Recorded Investment With No Allowance	13,820
Financing Receivable, Modifications, Number of Contracts | loan		3
Nonaccrual	32,225		34,818
Restructured, accruing	3,320		3,559
Impaired Financing Receivables, Recorded Investment, 90 Days Past Due and Still Accruing	1,114		130
Commercial and industrial
Financing Receivable, Past Due [Line Items]
Total Recorded Investment	22,508		21,770
Recorded Investment With No Allowance	$ 8,239		8,316
Financing Receivable, Modifications, Number of Contracts | loan	1
Nonaccrual	$ 18,372		18,158
Restructured, accruing	3,243		3,482
Impaired Financing Receivables, Recorded Investment, 90 Days Past Due and Still Accruing	893		130
Commercial - investor owned
Financing Receivable, Past Due [Line Items]
Total Recorded Investment	7,379		9,579
Recorded Investment With No Allowance	455		716
Nonaccrual	7,379		9,579
Restructured, accruing	0		0
Impaired Financing Receivables, Recorded Investment, 90 Days Past Due and Still Accruing	0		0
Commercial - owner occupied
Financing Receivable, Past Due [Line Items]
Total Recorded Investment	2,589		2,940
Recorded Investment With No Allowance	2,331		6,024
Nonaccrual	2,589		2,940
Restructured, accruing	0		0
Impaired Financing Receivables, Recorded Investment, 90 Days Past Due and Still Accruing	0		0
Construction and land development
Financing Receivable, Past Due [Line Items]
Total Recorded Investment	0
Recorded Investment With No Allowance	0		0
Nonaccrual	0
Restructured, accruing	0
Impaired Financing Receivables, Recorded Investment, 90 Days Past Due and Still Accruing	0
Residential real estate
Financing Receivable, Past Due [Line Items]
Total Recorded Investment	3,945		4,189
Recorded Investment With No Allowance	2,795		3,190
Financing Receivable, Modifications, Number of Contracts | loan		2
Nonaccrual	3,868		4,112
Restructured, accruing	77		77
Impaired Financing Receivables, Recorded Investment, 90 Days Past Due and Still Accruing	0		0
Other
Financing Receivable, Past Due [Line Items]
Total Recorded Investment	238		29
Recorded Investment With No Allowance	0		18,246
Nonaccrual	17		29
Restructured, accruing	0		0
Impaired Financing Receivables, Recorded Investment, 90 Days Past Due and Still Accruing	$ 221		$ 0

Loans - Summary of Recorded I_3

Loans - Summary of Recorded Investment by Category for Portfolio Loans Restructured (Details) - Non-Covered Loans $ in Thousands	3 Months Ended
	Mar. 31, 2021USD ($)loan	Mar. 31, 2020USD ($)loan
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		3
Pre-Modification Outstanding Recorded Balance		$ 3,886
Post-Modification Outstanding Recorded Balance		$ 3,886
Commercial and industrial
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan	1
Pre-Modification Outstanding Recorded Balance	$ 3,731
Post-Modification Outstanding Recorded Balance	$ 3,731
Residential real estate
Financing Receivable, Troubled Debt Restructuring [Line Items]
Number of Loans | loan		2
Pre-Modification Outstanding Recorded Balance		$ 155
Post-Modification Outstanding Recorded Balance		$ 155

Loans - Summary of Aging of Rec

Loans - Summary of Aging of Recorded Investment in Past Due Portfolio Loans by Portfolio Class and Category (Details) - Non-Covered Loans - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Past Due [Line Items]
Total Past Due	$ 59,418
Current	7,229,363
Loans, including unearned loan fees	7,288,781	$ 7,224,935
Commercial and industrial
Financing Receivable, Past Due [Line Items]
Total Past Due	43,067
Current	3,036,576
Loans, including unearned loan fees	3,079,643
CRE - investor owned
Financing Receivable, Past Due [Line Items]
Total Past Due	7,468
Current	1,661,747
Loans, including unearned loan fees	1,669,215
CRE - owner occupied
Financing Receivable, Past Due [Line Items]
Total Past Due	4,299
Current	1,513,456
Loans, including unearned loan fees	1,517,755
Construction and land development
Financing Receivable, Past Due [Line Items]
Total Past Due	400
Current	510,101
Loans, including unearned loan fees	510,501
Residential real estate
Financing Receivable, Past Due [Line Items]
Total Past Due	3,461
Current	299,586
Loans, including unearned loan fees	303,047
Other
Financing Receivable, Past Due [Line Items]
Total Past Due	723
Current	207,897
Loans, including unearned loan fees	208,620
Financial Asset, 30 to 89 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total Past Due	30,313
Financial Asset, 30 to 89 Days Past Due [Member] | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Total Past Due	25,976
Financial Asset, 30 to 89 Days Past Due [Member] | CRE - investor owned
Financing Receivable, Past Due [Line Items]
Total Past Due	768
Financial Asset, 30 to 89 Days Past Due [Member] | CRE - owner occupied
Financing Receivable, Past Due [Line Items]
Total Past Due	312
Financial Asset, 30 to 89 Days Past Due [Member] | Construction and land development
Financing Receivable, Past Due [Line Items]
Total Past Due	400
Financial Asset, 30 to 89 Days Past Due [Member] | Residential real estate
Financing Receivable, Past Due [Line Items]
Total Past Due	2,371
Financial Asset, 30 to 89 Days Past Due [Member] | Other
Financing Receivable, Past Due [Line Items]
Total Past Due	486
Financial Asset, Equal to or Greater than 90 Days Past Due [Member]
Financing Receivable, Past Due [Line Items]
Total Past Due	29,105
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Commercial and industrial
Financing Receivable, Past Due [Line Items]
Total Past Due	17,091
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | CRE - investor owned
Financing Receivable, Past Due [Line Items]
Total Past Due	6,700
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | CRE - owner occupied
Financing Receivable, Past Due [Line Items]
Total Past Due	3,987
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Construction and land development
Financing Receivable, Past Due [Line Items]
Total Past Due	0
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Residential real estate
Financing Receivable, Past Due [Line Items]
Total Past Due	1,090
Financial Asset, Equal to or Greater than 90 Days Past Due [Member] | Other
Financing Receivable, Past Due [Line Items]
Total Past Due	$ 237

Loans - Summary of Term Loans b

Loans - Summary of Term Loans by Origination Year (Details) $ in Thousands	Mar. 31, 2021USD ($)
Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
2020	$ 534,877
2019	1,084,983
2018	420,993
2017	215,281
2016	125,942
Prior	82,255
Financing Receivable, Converted	9,030
Revolving Loans	592,598
Total	3,065,959
Commercial and industrial | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	510,640
2019	1,044,599
2018	403,420
2017	196,752
2016	121,210
Prior	65,492
Financing Receivable, Converted	8,432
Revolving Loans	515,327
Total	2,865,872
Commercial and industrial | Watch (7)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	20,506
2019	34,164
2018	8,303
2017	15,706
2016	4,378
Prior	15,002
Financing Receivable, Converted	191
Revolving Loans	57,994
Total	156,244
Commercial and industrial | Classified (8 & 9)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	3,731
2019	6,220
2018	9,270
2017	2,823
2016	354
Prior	1,761
Financing Receivable, Converted	407
Revolving Loans	19,277
Total	43,843
Commercial Real Estate-Investor Owned Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	128,616
2019	509,782
2018	369,703
2017	208,844
2016	129,903
Prior	279,775
Financing Receivable, Converted	3,712
Revolving Loans	38,880
Total	1,669,215
Commercial Real Estate-Investor Owned Portfolio Segment [Member] | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	125,834
2019	471,216
2018	351,386
2017	195,605
2016	129,903
Prior	252,747
Financing Receivable, Converted	3,712
Revolving Loans	38,880
Total	1,569,283
Commercial Real Estate-Investor Owned Portfolio Segment [Member] | Watch (7)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	2,782
2019	32,554
2018	13,017
2017	6,588
2016	0
Prior	24,282
Financing Receivable, Converted	0
Revolving Loans	0
Total	79,223
Commercial Real Estate-Investor Owned Portfolio Segment [Member] | Classified (8 & 9)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	6,012
2018	5,300
2017	6,651
2016	0
Prior	2,746
Financing Receivable, Converted	0
Revolving Loans	0
Total	20,709
Commercial Real Estate-Owner Occupied Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	91,342
2019	433,216
2018	265,995
2017	228,185
2016	175,839
Prior	279,360
Financing Receivable, Converted	0
Revolving Loans	43,818
Total	1,517,755
Commercial Real Estate-Owner Occupied Portfolio Segment [Member] | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	88,848
2019	422,455
2018	253,188
2017	205,203
2016	161,983
Prior	258,470
Financing Receivable, Converted	0
Revolving Loans	42,003
Total	1,432,150
Commercial Real Estate-Owner Occupied Portfolio Segment [Member] | Watch (7)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	2,111
2019	8,967
2018	5,212
2017	17,006
2016	6,130
Prior	9,732
Financing Receivable, Converted	0
Revolving Loans	1,752
Total	50,910
Commercial Real Estate-Owner Occupied Portfolio Segment [Member] | Classified (8 & 9)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	383
2019	1,794
2018	7,595
2017	5,976
2016	7,726
Prior	11,158
Financing Receivable, Converted	0
Revolving Loans	63
Total	34,695
Construction Real Estate Portfolio Segment [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
2020	92,475
2019	181,015
2018	123,119
2017	51,806
2016	19,130
Prior	18,451
Financing Receivable, Converted	0
Revolving Loans	24,505
Total	510,501
Construction Real Estate Portfolio Segment [Member] | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	76,142
2019	180,898
2018	120,004
2017	30,559
2016	7,843
Prior	15,954
Financing Receivable, Converted	0
Revolving Loans	24,405
Total	455,805
Construction Real Estate Portfolio Segment [Member] | Watch (7)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	16,333
2019	62
2018	85
2017	20,748
2016	11,287
Prior	2,468
Financing Receivable, Converted	0
Revolving Loans	0
Total	50,983
Construction Real Estate Portfolio Segment [Member] | Classified (8 & 9)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	55
2018	3,030
2017	499
2016	0
Prior	29
Financing Receivable, Converted	0
Revolving Loans	100
Total	3,713
Residential Portfolio Segment
Financing Receivable, Credit Quality Indicator [Line Items]
2020	15,386
2019	57,388
2018	25,085
2017	16,011
2016	14,858
Prior	114,843
Financing Receivable, Converted	112
Revolving Loans	58,448
Total	302,131
Residential Portfolio Segment | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	15,166
2019	56,188
2018	23,567
2017	15,421
2016	14,844
Prior	109,575
Financing Receivable, Converted	112
Revolving Loans	57,997
Total	292,870
Residential Portfolio Segment | Watch (7)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	313
2018	801
2017	513
2016	0
Prior	1,725
Financing Receivable, Converted	0
Revolving Loans	379
Total	3,731
Residential Portfolio Segment | Classified (8 & 9)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	220
2019	887
2018	717
2017	77
2016	14
Prior	3,543
Financing Receivable, Converted	0
Revolving Loans	72
Total	5,530
Other
Financing Receivable, Credit Quality Indicator [Line Items]
2020	33,630
2019	56,052
2018	21,770
2017	27,528
2016	9,291
Prior	27,911
Financing Receivable, Converted	0
Revolving Loans	31,646
Total	207,828
Other | Pass (1-6)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	33,630
2019	56,052
2018	21,753
2017	27,503
2016	9,290
Prior	25,300
Financing Receivable, Converted	0
Revolving Loans	31,640
Total	205,168
Other | Watch (7)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	1
2017	7
2016	0
Prior	2,588
Financing Receivable, Converted	0
Revolving Loans	5
Total	2,601
Other | Classified (8 & 9)
Financing Receivable, Credit Quality Indicator [Line Items]
2020	0
2019	0
2018	16
2017	18
2016	1
Prior	23
Financing Receivable, Converted	0
Revolving Loans	1
Total	$ 59

Loans - Summary of Performing a

Loans - Summary of Performing and Non Performing Loans (Details) $ in Thousands	Mar. 31, 2021USD ($)
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	$ 15,392
Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	15,369
Non Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	23
Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	13,684
Commercial and industrial | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	13,682
Commercial and industrial | Non Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	2
Residential Portfolio Segment
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	916
Residential Portfolio Segment | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	916
Residential Portfolio Segment | Non Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	0
Other
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	792
Other | Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	771
Other | Non Performing
Financing Receivable, Credit Quality Indicator [Line Items]
Investment on loans by payment activity	$ 21

Loans - Summary of Recorded I_4

Loans - Summary of Recorded Investment by Risk Category of Portfolio Loans by Portfolio Class and Category (Details) - Non-Covered Loans - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	$ 36,659	$ 38,507
Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	20,279
Residential Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	3,891
Blanket Lien
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	3,064
Other Collateral
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	215
Commercial and industrial
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	22,508	21,770
Commercial and industrial | Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	10,737
Commercial and industrial | Residential Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	0
Commercial and industrial | Blanket Lien
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	3,064
Commercial and industrial | Other Collateral
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	0
CRE - investor owned
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	7,379	9,579
CRE - investor owned | Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	7,155
CRE - investor owned | Residential Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	0
CRE - investor owned | Blanket Lien
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	0
CRE - investor owned | Other Collateral
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	0
CRE - owner occupied
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	2,589	2,940
CRE - owner occupied | Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	2,387
CRE - owner occupied | Residential Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	0
CRE - owner occupied | Blanket Lien
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	0
CRE - owner occupied | Other Collateral
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	0
Construction and land development
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	0
Residential real estate
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	3,945	4,189
Residential real estate | Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	0
Residential real estate | Residential Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	3,891
Residential real estate | Blanket Lien
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	0
Residential real estate | Other Collateral
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	0
Other
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	238	$ 29
Other | Commercial Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	0
Other | Residential Real Estate [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	0
Other | Blanket Lien
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	0
Other | Other Collateral
Financing Receivable, Credit Quality Indicator [Line Items]
Loans, before unearned loan fees	$ 215

Commitments (Details)

Commitments (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Dec. 31, 2020
Unadvanced Commitment on Impaired Loan
Schedule of Commitments [Line Items]
Estimated losses attributable to unadvanced commitments on impaired loans	$ 5,350	$ 5,720
Commitments to extend credit
Schedule of Commitments [Line Items]
Off-balance sheet financial instruments, contractual amounts	2,043,850	1,946,068
Commitments to extend credit | Fixed Rate Loan Commitment
Schedule of Commitments [Line Items]
Off-balance sheet financial instruments, contractual amounts	178,500	160,600
Letters of credit
Schedule of Commitments [Line Items]
Off-balance sheet financial instruments, contractual amounts	$ 58,093	$ 50,971
Letters of credit | Maximum
Schedule of Commitments [Line Items]
Remaining term	4 years 9 months
Letters of credit | Minimum
Schedule of Commitments [Line Items]
Remaining term	1 month

Derivative Financial Instrume_3

Derivative Financial Instruments (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2020
Securities Sold under Agreements to Repurchase [Abstract]
Gross Amounts Recognized		$ 202,246	$ 271,081
Gross Amounts Offset in the Statement of Financial Position		0	0
Net Amounts of Liabilities presented in the Statement of Financial Position		202,246	271,081
Financial Instruments		0	0
Fair Value Collateral Posted		202,246	271,081
Net Amount		0	0
Fair value of derivatives in a net liability position		25,600
Posted collateral		23,800
Interest rate swap
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Asset derivatives (other assets), fair value		20,271	28,703
Liability derivatives (other liabilities), fair value		24,799	34,967
Derivative Asset [Abstract]
Gross Amounts Offset in the Statement of Financial Position		0	0
Derivative financial instruments		20,271	28,703
Financial Instruments		1,322	2
Fair Value Collateral Posted		0	0
Net Amount		18,949	28,701
Derivative Liability [Abstract]
Gross Amounts Offset in the Statement of Financial Position		0	0
Net Amounts of Liabilities presented in the Statement of Financial Position		24,799	34,967
Financial Instruments		1,322	2
Fair Value Collateral Posted		23,090	34,903
Net Amount		387	62
Derivatives Designated as Hedging Instruments: | Other Assets [Member] | Interest rate swap
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Derivative Asset, Notional Amount		61,962	61,962
Asset derivatives (other assets), fair value		0	0
Derivatives Designated as Hedging Instruments: | Other Liabilities [Member] | Interest rate swap
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Liability derivatives (other liabilities), fair value		4,488	5,987
Derivatives not Designated as Hedging Instruments: | Other Assets [Member] | Interest rate swap
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Derivative Asset, Notional Amount		1,007,417	1,026,016
Asset derivatives (other assets), fair value		20,271	28,703
Derivatives not Designated as Hedging Instruments: | Other Liabilities [Member] | Interest rate swap
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Liability derivatives (other liabilities), fair value		$ 20,311	$ 28,980
Cash Flow Hedging | Cash Flow Hedge 1
Derivative [Line Items]
Derivative, fixed rate		2.60%
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Derivative Asset, Notional Amount		$ 15,465
Cash Flow Hedging | Cash Flow Hedge 2
Derivative [Line Items]
Derivative, fixed rate		2.60%
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Derivative Asset, Notional Amount		$ 14,433
Cash Flow Hedging | Cash Flow Hedge 3
Derivative [Line Items]
Derivative, fixed rate		2.64%
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Derivative Asset, Notional Amount		$ 18,558
Cash Flow Hedging | Cash Flow Hedge 4
Derivative [Line Items]
Derivative, fixed rate		2.64%
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Derivative Asset, Notional Amount		$ 13,506
Cash Flow Hedging | Subordinated Debt [Member]
Derivative [Line Items]
Derivative, Variable Interest Rate		2.62%
Derivative Assets (Liabilities), at Fair Value, Net, by Balance Sheet Classification [Abstract]
Derivative Asset, Notional Amount		$ 62,000
Scenario, Forecast | Cash Flow Hedging
Derivative [Line Items]
Amount of Gain or (Loss) Reclassified from Accumulated OCI into Income	$ 1,500

Fair Value Measurements - Summa

Fair Value Measurements - Summary of Financial Instruments Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Assets
Securities available for sale	$ 945,660	$ 912,429
Estimate of Fair Value Measurement [Member]
Assets
State tax credits held for sale	37,802	39,925
Obligations of U.S. Government-sponsored enterprises
Assets
Securities available for sale	23,445	15,161
Obligations of states and political subdivisions
Assets
Securities available for sale	403,557	344,232
Agency mortgage-backed securities
Assets
Securities available for sale	492,081	526,572
U.S. Treasury bills
Assets
Securities available for sale	11,409	11,466
Corporate debt securities
Assets
Securities available for sale	15,168	14,998
Recurring basis | Estimate of Fair Value Measurement [Member]
Assets
Securities available for sale	945,660	912,429
Derivatives	20,271	28,703
Total assets	965,931	941,132
Liabilities
Derivatives	24,799	34,967
Total liabilities	24,799	34,967
Recurring basis | Obligations of U.S. Government-sponsored enterprises | Estimate of Fair Value Measurement [Member]
Assets
Securities available for sale	23,445	15,161
Recurring basis | Obligations of states and political subdivisions | Estimate of Fair Value Measurement [Member]
Assets
Securities available for sale	403,557	344,232
Recurring basis | Agency mortgage-backed securities | Estimate of Fair Value Measurement [Member]
Assets
Securities available for sale	492,081	526,572
Recurring basis | U.S. Treasury bills | Estimate of Fair Value Measurement [Member]
Assets
Securities available for sale	11,409	11,466
Recurring basis | Corporate debt securities | Estimate of Fair Value Measurement [Member]
Assets
Securities available for sale	15,168	14,998
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1)
Assets
Securities available for sale	0	0
Derivatives	0	0
Total assets	0	0
Liabilities
Derivatives	0	0
Total liabilities	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Obligations of U.S. Government-sponsored enterprises
Assets
Securities available for sale	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Obligations of states and political subdivisions
Assets
Securities available for sale	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Agency mortgage-backed securities
Assets
Securities available for sale	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | U.S. Treasury bills
Assets
Securities available for sale	0	0
Recurring basis | Quoted Prices in Active Markets for Identical Assets (Level 1) | Corporate debt securities
Assets
Securities available for sale	0	0
Recurring basis | Significant Other Observable Inputs (Level 2)
Assets
Securities available for sale	945,660	912,429
Derivatives	20,271	28,703
Total assets	965,931	941,132
Liabilities
Derivatives	24,799	34,967
Total liabilities	24,799	34,967
Recurring basis | Significant Other Observable Inputs (Level 2) | Obligations of U.S. Government-sponsored enterprises
Assets
Securities available for sale	23,445	15,161
Recurring basis | Significant Other Observable Inputs (Level 2) | Obligations of states and political subdivisions
Assets
Securities available for sale	403,557	344,232
Recurring basis | Significant Other Observable Inputs (Level 2) | Agency mortgage-backed securities
Assets
Securities available for sale	492,081	526,572
Recurring basis | Significant Other Observable Inputs (Level 2) | U.S. Treasury bills
Assets
Securities available for sale	11,409	11,466
Recurring basis | Significant Other Observable Inputs (Level 2) | Corporate debt securities
Assets
Securities available for sale	15,168	14,998
Recurring basis | Significant Unobservable Inputs (Level 3)
Assets
Securities available for sale	0	0
Derivatives	0	0
Total assets	0	0
Liabilities
Derivatives	0	0
Total liabilities	0	0
Recurring basis | Significant Unobservable Inputs (Level 3) | Obligations of U.S. Government-sponsored enterprises
Assets
Securities available for sale	0	0
Recurring basis | Significant Unobservable Inputs (Level 3) | Obligations of states and political subdivisions
Assets
Securities available for sale	0	0
Recurring basis | Significant Unobservable Inputs (Level 3) | Agency mortgage-backed securities
Assets
Securities available for sale	0	0
Recurring basis | Significant Unobservable Inputs (Level 3) | U.S. Treasury bills
Assets
Securities available for sale	0	0
Recurring basis | Significant Unobservable Inputs (Level 3) | Corporate debt securities
Assets
Securities available for sale	$ 0	$ 0

Fair Value Measurements - Losse

Fair Value Measurements - Losses Recorded in Relation to Assets Measured on a Nonrecurring Basis (Details) - Fair Value, Measurements, Nonrecurring - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Losses recorded in relation to assets measured on a nonrecurring basis	$ 1,742	$ 788
Nonaccrual loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Losses recorded in relation to assets measured on a nonrecurring basis	1,742	11
Other real estate
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Losses recorded in relation to assets measured on a nonrecurring basis	0	$ 777
Quoted Prices in Active Markets for Identical Assets (Level 1) | Nonaccrual loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans receivable, fair value	0
Significant Other Observable Inputs (Level 2) | Nonaccrual loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans receivable, fair value	0
Significant Unobservable Inputs (Level 3) | Nonaccrual loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans receivable, fair value	2,503
Estimate of Fair Value Measurement [Member] | Nonaccrual loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans receivable, fair value	$ 2,503

Fair Value Measurements - Sum_2

Fair Value Measurements - Summary of Carrying Amount and Fair Values of Financial Instruments Reported on the Balance Sheets (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Balance sheet assets
Securities available for sale	$ 945,660	$ 912,429
Securities held-to-maturity, net	467,508	488,059
Carrying Amount
Balance sheet assets
Securities held-to-maturity, net	467,059	487,610
Other investments	51,099	48,764
Loans held for sale	8,531	13,564
Loans, net	7,157,254	7,088,264
State tax credits held for sale	34,287	36,853
Balance sheet liabilities
Certificates of deposit	521,351	550,095
Subordinated debentures and notes	203,778	203,637
FHLB advances	50,000	50,000
Other borrowings and notes payable	229,389	301,081
Estimated fair value
Balance sheet assets
Securities held-to-maturity, net	470,099	501,523
Other investments	51,099	48,764
Loans held for sale	8,531	13,564
Loans, net	7,099,662	7,067,562
State tax credits held for sale	37,802	39,925
Balance sheet liabilities
Certificates of deposit	525,000	553,946
Subordinated debentures and notes	193,071	192,889
FHLB advances	51,694	51,871
Other borrowings and notes payable	$ 229,389	$ 301,081

SHAREHOLDERS_ EQUITY AND COMP_3

SHAREHOLDERS’ EQUITY AND COMPENSATION PLANS - Changes in Accumulated Other Comprehensive Income After-tax By Component (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	$ 1,078,975	$ 867,185
Ending balance	1,092,497	846,436
Net Unrealized Gain (Loss) on Available-for-Sale Debt Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	22,320	14,977
Net change	(10,920)	10,561
Ending balance	11,400	25,538
Unamortized Gain (Loss) on Held-to-Maturity Securities
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	19,308	4,934
Net change	(1,149)	(156)
Ending balance	18,159	4,778
Net Unrealized Loss on Cash Flow Hedges
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	(4,508)	(2,162)
Net change	1,126	(5,057)
Ending balance	(3,382)	(7,219)
Total
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Beginning balance	37,120	17,749
Net change	(10,943)	5,348
Ending balance	$ 26,177	$ 23,097

SHAREHOLDERS_ EQUITY AND COMP_4

SHAREHOLDERS’ EQUITY AND COMPENSATION PLANS - Pre-tax and After-tax Changes in the Components of Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, before Reclassification Adjustments, after Tax [Abstract]
Change in unrealized gain on available-for-sale debt securities, before tax	$ (14,541)	$ 14,029
Change in unrealized gain on available-for-sale debt securities, tax	(3,621)	3,465
Change in unrealized gain on available-for-sale debt securities, after tax	(10,920)	10,564
Other Comprehensive Income (Loss), Securities, Available-for-sale, Adjustment, after Tax [Abstract]
Reclassification adjustment for realized (gain) loss on sale of available-for-sale debt securities, before tax	0	(4)
Reclassification adjustment for realized (gain) loss on sale of available-for-sale debt securities, tax	0	(1)
Reclassification adjustment for realized (gain) loss on sale of available-for-sale debt securities, after tax	0	3
Other Comprehensive Loss, Held-to-maturity Security, OTTI, after Tax and Adjustments [Abstract]
Reclassification of (gain) loss on held-to-maturity securities, before tax	(1,530)	(207)
Reclassification of (gain) loss on held-to-maturity securities, tax	(381)	(51)
Reclassification of (gain) loss on held-to-maturity securities, after tax	(1,149)	(156)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax, Parent [Abstract]
Change in unrealized loss on cash flow hedges arising during the period, before tax	1,128	(6,879)
Change in unrealized loss on cash flow hedges arising during the period, tax	281	(1,699)
Change in unrealized loss on cash flow hedges arising during the period, after tax	847	(5,180)
Other Comprehensive Income (Loss), Cash Flow Hedge, Gain (Loss), after Reclassification and Tax [Abstract]
Reclassification of loss on cash flow hedges, before tax	372	163
Reclassification of loss on cash flow hedges, tax	93	40
Reclassification of loss on cash flow hedges, after tax	(279)	(123)
OCI, Net of Tax [Abstract]
Total other comprehensive income, before tax	(14,571)	7,102
Total other comprehensive income, tax	(3,628)	1,754
Total other comprehensive income (loss), after-tax	$ (10,943)	$ 5,348

SHAREHOLDERS_ EQUITY AND COMP_5

SHAREHOLDERS’ EQUITY AND COMPENSATION PLANS - Schedule of Employee Stock Options Outstanding (Details)	3 Months Ended
	Mar. 31, 2021$ / sharesshares
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]
Options Outstanding, December 31, 2020	0
Options granted	111,804
Options Outstanding, March 31, 2021	111,804
Weighted Average Life	9 years 10 months 24 days
Weighted Average Price | $ / shares	$ 43.81
Shares Exercisable	0
Weighted Average Exercise Price | $ / shares	$ 0

SUBSEQUENT EVENT (Details)

SUBSEQUENT EVENT (Details) - Subsequent Event - First Choice Bancorp $ / shares in Units, $ in Thousands	Apr. 26, 2021USD ($)$ / shares
Subsequent Event [Line Items]
Value of transaction	$ 397,700
Value of transaction (in dollars per share) | $ / shares	$ 33.40
Pro forma basis, combined value of total assets	$ 12,700,000