Allegiance Bancshares (ABTX) 10-Q 29 Apr 22 2022 Q1 Quarterly report Financial data

Cover Page

Cover Page - shares	3 Months Ended
	Mar. 31, 2022	Apr. 26, 2022
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2022
Document Transition Report	false
Entity File Number	001-37585
Entity Registrant Name	Allegiance Bancshares, Inc.
Entity Incorporation, State or Country Code	TX
Entity Tax Identification Number	26-3564100
Entity Address, Address Line One	8847 West Sam Houston Parkway, N.
Entity Address, Address Line Two	Suite 200
Entity Address, City or Town	Houston
Entity Address, State or Province	TX
Entity Address, Postal Zip Code	77040
City Area Code	281
Local Phone Number	894-3200
Title of 12(b) Security	Common Stock, par value, $1.00 per share
Trading Symbol	ABTX
Security Exchange Name	NASDAQ
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Common Stock, Shares Outstanding		20,378,054
Entity Central Index Key	0001642081
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q1
Amendment Flag	false

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
ASSETS
Cash and due from banks	$ 26,629	$ 23,961
Interest-bearing deposits at other financial institutions	672,755	733,548
Total cash and cash equivalents	699,384	757,509
Fair Value	1,790,707	1,773,765
Loans held for investment	4,283,514	4,220,486
Less: allowance for credit losses on loans	49,215	47,940
Loans, net	4,234,299	4,172,546
Accrued interest receivable	31,505	33,392
Premises and equipment, net	62,168	63,708
Federal Home Loan Bank stock	9,376	9,358
Bank owned life insurance	28,374	28,240
Goodwill	223,642	223,642
Core deposit intangibles, net	13,907	14,658
Other assets	56,001	28,136
TOTAL ASSETS	7,149,363	7,104,954
Deposits:
Noninterest-bearing	2,353,604	2,243,085
Interest-bearing
Demand	1,070,855	869,984
Money market and savings	1,552,853	1,643,745
Certificates and other time	1,185,015	1,290,825
Total interest-bearing deposits	3,808,723	3,804,554
Total deposits	6,162,327	6,047,639
Accrued interest payable	3,086	1,753
Borrowed funds	89,959	89,956
Subordinated debt	108,978	108,847
Other liabilities	33,073	40,291
Total liabilities	6,397,423	6,288,486
COMMITMENTS AND CONTINGENCIES (See Note 13)
SHAREHOLDERS’ EQUITY:
Preferred stock, $1 par value; 1,000,000 shares authorized; no shares issued or outstanding	0	0
Common stock, $1 par value; 80,000,000 shares authorized; 20,378,116 shares issued and outstanding at March 31, 2022 and 20,337,220 shares issued and outstanding at December 31, 2021	20,378	20,337
Capital surplus	512,284	510,797
Retained earnings	282,896	267,092
Accumulated other comprehensive (loss) income	(63,618)	18,242
Total shareholders’ equity	751,940	816,468
TOTAL LIABILITIES AND SHAREHOLDERS’ EQUITY	$ 7,149,363	$ 7,104,954

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parentheticals) - $ / shares	Mar. 31, 2022	Dec. 31, 2021
Statement of Financial Position [Abstract]
Preferred stock, par value (in dollars per share)	$ 1	$ 1
Preferred stock, shares authorized (in shares)	1,000,000	1,000,000
Preferred stock, shares issued (in shares)	0	0
Preferred stock, shares outstanding (in shares)	0	0
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	80,000,000	80,000,000
Common stock, shares issued (in shares)	20,378,116	20,337,220
Common stock, shares outstanding (in shares)	20,378,116	20,337,220

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
INTEREST INCOME:
Loans, including fees	$ 52,370	$ 57,991
Securities:
Taxable	5,068	2,402
Tax-exempt	2,525	2,394
Deposits in other financial institutions	340	41
Total interest income	60,303	62,828
INTEREST EXPENSE:
Demand, money market and savings deposits	1,347	1,484
Certificates and other time deposits	2,156	3,665
Borrowed funds	186	539
Subordinated debt	1,442	1,442
Total interest expense	5,131	7,130
NET INTEREST INCOME	55,172	55,698
Provision for credit losses	1,814	639
Net interest income after provision for credit losses	53,358	55,059
NONINTEREST INCOME:
Gain on sale of securities	0	49
Loss on sale of other real estate and other repossessed assets	0	(176)
Bank owned life insurance income	133	139
Debit card and ATM card income	819	630
Other	2,423	623
Total noninterest income	4,018	1,736
NONINTEREST EXPENSE:
Salaries and employee benefits	22,728	22,452
Net occupancy and equipment	2,205	2,390
Depreciation	1,033	1,034
Data processing and software amortization	2,498	2,200
Professional fees	138	789
Regulatory assessments and FDIC insurance	1,261	807
Core deposit intangibles amortization	751	824
Communications	341	321
Advertising	462	298
Other real estate expense	59	113
Acquisition and merger-related expenses	451	0
Other	2,590	3,691
Total noninterest expense	34,517	34,919
INCOME BEFORE INCOME TAXES	22,859	21,876
Provision for income taxes	4,202	3,866
NET INCOME	$ 18,657	$ 18,010
EARNINGS PER SHARE:
Basic (in dollars per share)	$ 0.92	$ 0.89
Diluted (in dollars per share)	0.91	0.89
DIVIDENDS PER SHARE (in dollars per share)	$ 0.14	$ 0.12
Nonsufficient funds fees
NONINTEREST INCOME:
Revenue from contract with customer	$ 116	$ 83
Service charges on deposit accounts
NONINTEREST INCOME:
Revenue from contract with customer	$ 527	$ 388

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 18,657	$ 18,010
Unrealized loss on securities:
Change in unrealized holding (loss) gain on available for sale securities during the period	(103,621)	(14,710)
Reclassification of gain realized through the sale of securities	0	(49)
Unrealized gain on cash flow hedge:
Change in fair value of cash flow hedge	0	1,824
Total other comprehensive loss	(103,621)	(12,935)
Deferred tax benefit related to other comprehensive loss	21,761	2,717
Other comprehensive loss, net of tax	(81,860)	(10,218)
Comprehensive (loss) income	$ (63,203)	$ 7,792

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN SHAREHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Common Stock	Capital Surplus	Retained Earnings	Accumulated Other Comprehensive Income (Loss)
Balance (in shares) at Dec. 31, 2020		20,208,323
Balance at Dec. 31, 2020	$ 758,669	$ 20,208	$ 508,794	$ 195,236	$ 34,431
Net income	18,010			18,010
Other comprehensive loss	(10,218)				(10,218)
Cash dividends declared	(2,412)			(2,412)
Common stock issued in connection with the exercise of stock options and restricted stock awards (in shares)		135,854
Common stock issued in connection with the exercise of stock options and restricted stock awards	1,327	$ 136	1,191
Repurchase of common stock (in shares)		(161,206)
Repurchase of common stock	(5,659)	$ (161)	(5,498)
Stock based compensation expense	820		820
Balance (in shares) at Mar. 31, 2021		20,182,971
Balance at Mar. 31, 2021	760,537	$ 20,183	505,307	210,834	24,213
Balance (in shares) at Dec. 31, 2021		20,337,220
Balance at Dec. 31, 2021	816,468	$ 20,337	510,797	267,092	18,242
Net income	18,657			18,657
Other comprehensive loss	(81,860)				(81,860)
Cash dividends declared	(2,853)			(2,853)
Common stock issued in connection with the exercise of stock options and restricted stock awards (in shares)		40,896
Common stock issued in connection with the exercise of stock options and restricted stock awards	569	$ 41	528
Stock based compensation expense	959		959
Balance (in shares) at Mar. 31, 2022		20,378,116
Balance at Mar. 31, 2022	$ 751,940	$ 20,378	$ 512,284	$ 282,896	$ (63,618)

CONSOLIDATED STATEMENTS OF CH_2

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parentheticals) - $ / shares	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Stockholders' Equity [Abstract]
Per share amount of cash dividends declared (in dollars per share)	$ 0.14	$ 0.12

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 18,657	$ 18,010
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and core deposit intangibles amortization	1,784	1,858
Provision for credit losses	1,814	639
Deferred income tax expense (benefit)	47	(1,899)
Net amortization of premium on investments	2,797	1,471
Excess tax benefit from stock based compensation	(149)	(251)
Bank owned life insurance income	(133)	(139)
Net accretion of discount on loans	(77)	(97)
Net amortization of discount on subordinated debt	29	28
Net accretion of discount on certificates of deposit	(16)	(58)
Loss on sale of other real estate and other repossessed assets	0	176
Loss on write-downs of premises, equipment and other real estate	0	1,317
Net gain on sale of securities	0	(49)
Federal Home Loan Bank stock dividends	(18)	(19)
Stock based compensation expense	959	820
Net change in operating leases	767	712
Increase in accrued interest receivable and other assets	(26,190)	(8,012)
Increase in accrued interest payable and other liabilities	15,785	6,739
Net cash provided by operating activities	16,056	21,246
CASH FLOWS FROM INVESTING ACTIVITIES:
Proceeds from maturities and principal paydowns of available for sale securities	640,437	1,012,785
Proceeds from sales and calls of available for sale securities	0	4,898
Purchase of available for sale securities	(763,586)	(1,048,261)
Net change in total loans	(63,268)	(167,253)
Purchase of bank premises and equipment	(184)	(916)
Proceeds from sale of bank premises, equipment and other real estate	0	8,044
Net cash used in investing activities	(186,601)	(190,703)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase in noninterest-bearing deposits	110,519	209,554
Net increase in interest-bearing deposits	4,185	176,211
Net paydown in borrowings under credit agreement	0	(8,000)
Dividends paid to common shareholders	(2,853)	(2,412)
Proceeds from the issuance of common stock and stock option exercises	569	1,327
Repurchase of common stock	0	(5,659)
Net cash provided by financing activities	112,420	371,021
NET CHANGE IN CASH AND CASH EQUIVALENTS	(58,125)	201,564
CASH AND CASH EQUIVALENTS, BEGINNING OF PERIOD	757,509	422,766
CASH AND CASH EQUIVALENTS, END OF PERIOD	699,384	624,330
SUPPLEMENTAL CASH FLOW INFORMATION:
Interest paid	3,798	5,969
Cash paid for operating lease liabilities	892	870
SUPPLEMENTAL NONCASH DISCLOSURE:
Lease right-of-use asset obtained in exchange for lessee operating lease liabilities	76	502
Bank-financed sales of other real estate	$ 0	$ 8,125

NATURE OF OPERATIONS AND SUMMAR

NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING AND REPORTING POLICIES	3 Months Ended
	Mar. 31, 2022
Accounting Policies [Abstract]
NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING AND REPORTING POLICIES	NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING AND REPORTING POLICIES Nature of Operations -Allegiance Bancshares, Inc. (“Allegiance”) and its wholly-owned subsidiary, Allegiance Bank, (the “Bank”, and together with Allegiance, collectively referred to as the “Company”) provide commercial and retail loans and commercial banking services. The Company derives substantially all of its revenues and income from the operation of the Bank. The Company is focused on delivering a wide variety of relationship-driven commercial banking products and community-oriented services tailored to meet the needs of small to medium-sized businesses, professionals and individual customers. The Company operated 27 full-service banking locations in the Houston region, which it defines as the Houston-The Woodlands-Sugar Land and Beaumont-Port Arthur metropolitan statistical areas, with 26 bank offices in the Houston metropolitan area and one bank office location in Beaumont, just outside of the Houston metropolitan area as of March 31, 2022. The Bank provides its customers with a variety of banking services including checking accounts, savings accounts and certificates of deposit, and its primary lending products are commercial, personal, automobile, mortgage and home improvement loans. The Bank also offers safe deposit boxes, automated teller machines, drive-through services and 24-hour depository facilities. Basis of Presentation -The accompanying unaudited condensed consolidated financial statements of the Company have been prepared in accordance with U.S. generally accepted accounting principles ("GAAP") for interim financial information and in accordance with guidance provided by the Securities and Exchange Commission. Accordingly, the condensed consolidated financial statements do not include all of the information and footnotes required by GAAP for complete financial statements. The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates. In the opinion of management, the accompanying unaudited condensed consolidated financial statements reflect all adjustments considered necessary for a fair presentation of the financial position, results of operations and cash flows of the Company on a consolidated basis, and all such adjustments are of a normal recurring nature. Transactions between the Company and the Bank have been eliminated. The condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and footnotes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2021. Operating results for the three months ended March 31, 2022 are not necessarily indicative of the results that may be expected for the year ending December 31, 2022. Pending Merger of Equals On November 8, 2021, Allegiance and CBTX, Inc., jointly announced that they entered into a definitive merger agreement pursuant to which the companies will combine in an all-stock merger of equals. CBTX reported total assets of $4.49 billion as of December 31, 2021. Under the terms of the definitive merger agreement, Allegiance shareholders will receive 1.4184 shares of CBTX, Inc. common stock for each share of Allegiance common stock they own. Following the completion of the merger, we estimate that former Allegiance shareholders will own approximately 54% and former CBTX, Inc. shareholders will own approximately 46% of the combined company. The companies have submitted the required regulatory filings and, subject to satisfaction or in some cases waiver of the closing conditions, including approval of the merger agreement by both companies’ shareholders, the parties anticipate closing in the second quarter of the year. Each company has scheduled a special meeting for May 24, 2022 at which its respective shareholders will consider and vote on the merger agreement and other related matters. Significant Accounting and Reporting Policies The Company’s significant accounting and reporting policies can be found in Note 1 of the Company’s annual financial statements included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2021. New Accounting Standards Newly Issued But Not Yet Effective Accounting Standards ASU 2022-02, "Financial Instruments – Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures." ASU 2022-02 eliminates the TDR accounting model for creditors that have already adopted Topic 326, which is commonly referred to as the current expected credit loss ("CECL") model. The FASB’s decision to eliminate the TDR accounting model is in response to

GOODWILL AND CORE DEPOSIT INTAN

GOODWILL AND CORE DEPOSIT INTANGIBLE ASSETS	3 Months Ended
	Mar. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
GOODWILL AND CORE DEPOSIT INTANGIBLE ASSETS	GOODWILL AND CORE DEPOSIT INTANGIBLE ASSETS Changes in the carrying amount of the Company’s goodwill and core deposit intangible assets were as follows: Goodwill Core Deposit (Dollars in thousands) Balance as of December 31, 2020 $ 223,642 $ 17,954 Amortization — (3,296) Balance as of December 31, 2021 223,642 14,658 Amortization — (751) Balance as of March 31, 2022 $ 223,642 $ 13,907 Goodwill is recorded on the acquisition date of an entity. During the measurement period, the Company may record subsequent adjustments to goodwill for provisional amounts recorded at the acquisition date. Management performs an evaluation annually, and more frequently if a triggering event occurs, of whether any impairment of the goodwill and other intangible assets has occurred. If any such impairment is determined, a write-down is recorded. As of March 31, 2022, there were no impairments recorded on goodwill and other intangible assets. The estimated aggregate future amortization expense for core deposit intangible assets remaining as of March 31, 2022 is as follows (dollars in thousands): Remaining 2022 $ 2,252 2023 2,323 2024 2,188 2025 2,061 2026 1,941 Thereafter 3,142 Total $ 13,907

SECURITIES

SECURITIES	3 Months Ended
	Mar. 31, 2022
Investments, Debt and Equity Securities [Abstract]
SECURITIES	SECURITIES The amortized cost and fair value of investment securities were as follows: March 31, 2022 Amortized Gross Gross Fair (Dollars in thousands) Available for Sale U.S. government and agency securities $ 424,171 $ 300 $ (11,376) $ 413,095 Municipal securities 470,404 7,449 (18,150) 459,703 Agency mortgage-backed pass-through securities 322,883 102 (22,119) 300,866 Agency collateralized mortgage obligations 518,067 81 (34,030) 484,118 Corporate bonds and other 135,701 1,157 (3,933) 132,925 Total $ 1,871,226 $ 9,089 $ (89,608) $ 1,790,707 December 31, 2021 Amortized Gross Gross Fair (Dollars in thousands) Available for Sale U.S. government and agency securities $ 401,811 $ 414 $ (1,674) $ 400,551 Municipal securities 468,164 30,483 (1,547) 497,100 Agency mortgage-backed pass-through securities 307,097 2,075 (6,576) 302,596 Agency collateralized mortgage obligations 443,277 2,026 (4,247) 441,056 Corporate bonds and other 130,314 2,922 (774) 132,462 Total $ 1,750,663 $ 37,920 $ (14,818) $ 1,773,765 As of March 31, 2022, no allowance for credit losses has been recognized on available for sale securities in an unrealized loss position as management does not believe any of the securities are impaired due to reasons of credit quality. This is based upon the Company’s analysis of the underlying risk characteristics, including credit ratings, and other qualitative factors related to its available for sale securities and in consideration of our historical credit loss experience and internal forecasts. The issuers of these securities continue to make timely principal and interest payments under the contractual terms of the securities. Furthermore, management does not have the intent to sell any of the securities classified as available for sale in the table above and believes that it is more likely than not that we will not have to sell any such securities before a recovery of cost. The unrealized losses are due to increases in market interest rates over the yields available at the time the underlying securities were purchased. The fair value is expected to recover as the securities approach their maturity date or repricing date or if market yields for such investments decline. The amortized cost and fair value of investment securities at March 31, 2022, by contractual maturity, are shown below. Expected maturities may differ from contractual maturities if borrowers have the right to call or prepay obligations at any time with or without call or prepayment penalties. Amortized Fair (Dollars in thousands) Due in one year or less $ 5,817 $ 5,867 Due after one year through five years 261,665 251,280 Due after five years through ten years 158,863 157,109 Due after ten years 603,931 591,467 Subtotal 1,030,276 1,005,723 Agency mortgage-backed pass-through securities and collateralized mortgage obligations 840,950 784,984 Total $ 1,871,226 $ 1,790,707 Securities with unrealized losses segregated by length of time such securities have been in a continuous loss position are as follows: March 31, 2022 Less than 12 Months More than 12 Months Total Estimated Unrealized Estimated Unrealized Estimated Unrealized (Dollars in thousands) Available for Sale U.S. government and agency securities $ 360,995 $ (11,376) $ — $ — $ 360,995 $ (11,376) Municipal securities 223,001 (15,908) 14,746 (2,242) 237,747 (18,150) Agency mortgage-backed pass-through securities 248,653 (17,462) 38,031 (4,657) 286,684 (22,119) Agency collateralized mortgage obligations 462,888 (33,458) 12,725 (572) 475,613 (34,030) Corporate bonds and other 71,447 (3,933) — — 71,447 (3,933) Total $ 1,366,984 $ (82,137) $ 65,502 $ (7,471) $ 1,432,486 $ (89,608) December 31, 2021 Less than 12 Months More than 12 Months Total Estimated Unrealized Estimated Unrealized Estimated Unrealized (Dollars in thousands) Available for Sale U.S. government and agency securities $ 340,161 $ (1,674) $ — $ — $ 340,161 $ (1,674) Municipal securities 70,019 (1,185) 10,435 (362) 80,454 (1,547) Agency mortgage-backed pass-through securities 219,610 (5,675) 21,627 (901) 241,237 (6,576) Agency collateralized mortgage obligations 328,300 (3,994) 13,820 (253) 342,120 (4,247) Corporate bonds and other 38,210 (774) — — 38,210 (774) Total $ 996,300 $ (13,302) $ 45,882 $ (1,516) $ 1,042,182 $ (14,818) There were no sales of securities for the three months ended March 31, 2022. The Company sold $4.9 million of securities recording gross gains of $49 thousand for the three months ended March 31, 2021. At March 31, 2022 and December 31, 2021, the Company did not own securities of any one issuer, other than the U.S. government and its agencies, in an amount greater than 10% of consolidated shareholders’ equity at such respective dates. The carrying value of pledged securities was $460.7 million at March 31, 2022 and $258.8 million at December 31, 2021, respectively. The majority of the securities were pledged to collateralize public fund deposits.

LOANS AND ALLOWANCE FOR CREDIT

LOANS AND ALLOWANCE FOR CREDIT LOSSES	3 Months Ended
	Mar. 31, 2022
Receivables [Abstract]
LOANS AND ALLOWANCE FOR CREDIT LOSSES	LOANS AND ALLOWANCE FOR CREDIT LOSSES The loan portfolio balances, net of unearned income and fees, consist of various types of loans primarily made to borrowers located within Texas and are segregated by class of loan as follows: March 31, 2022 December 31, 2021 (Dollars in thousands) Commercial and industrial $ 714,450 $ 693,559 Paycheck Protection Program (PPP) 78,624 145,942 Real estate: Commercial real estate (including multi-family residential) 2,197,502 2,104,621 Commercial real estate construction and land development 453,473 439,125 1-4 family residential (including home equity) 669,306 685,071 Residential construction 136,760 117,901 Consumer and other 33,399 34,267 Total loans 4,283,514 4,220,486 Allowance for credit losses on loans (49,215) (47,940) Loans, net $ 4,234,299 $ 4,172,546 Nonaccrual and Past Due Loans An aging analysis of the recorded investment in past due loans, segregated by class of loans, is included below. The Company defines recorded investment as the outstanding loan balances including net deferred loan fees, and excluding accrued interest receivable of $24.1 million and $26.0 million as of March 31, 2022 and December 31, 2021, respectively, due to immateriality. March 31, 2022 Loans Past Due and Still Accruing Nonaccrual Current Total 30-89 90 or More Total Past (Dollars in thousands) Commercial and industrial $ 3,149 $ — $ 3,149 $ 7,809 $ 703,492 $ 714,450 Paycheck Protection Program (PPP) — — — — 78,624 78,624 Real estate: Commercial real estate (including multi-family residential) 8,391 — 8,391 15,259 2,173,852 2,197,502 Commercial real estate construction and land development 2,611 — 2,611 — 450,862 453,473 1-4 family residential (including home equity) 1,539 — 1,539 3,065 664,702 669,306 Residential construction 2,431 — 2,431 — 134,329 136,760 Consumer and other 28 — 28 142 33,229 33,399 Total loans $ 18,149 $ — $ 18,149 $ 26,275 $ 4,239,090 $ 4,283,514 December 31, 2021 Loans Past Due and Still Accruing Nonaccrual Current Total 30-89 90 or More Total Past (Dollars in thousands) Commercial and industrial $ 1,786 $ — $ 1,786 $ 8,358 $ 683,415 $ 693,559 Paycheck Protection Program (PPP) — — — — 145,942 145,942 Real estate: Commercial real estate (including multi-family residential) 7,689 — 7,689 12,639 2,084,293 2,104,621 Commercial real estate construction and land development 619 — 619 63 438,443 439,125 1-4 family residential (including home equity) 2,422 — 2,422 2,875 679,774 685,071 Residential construction 1,243 — 1,243 — 116,658 117,901 Consumer and other 23 — 23 192 34,052 34,267 Total loans $ 13,782 $ — $ 13,782 $ 24,127 $ 4,182,577 $ 4,220,486 Credit Quality Indicators The Company categorizes loans into risk categories based on relevant information about the ability of borrowers to service their debt. The Company utilizes a risk rating matrix to assign a risk rating to each of its loans. Loans are rated on a scale of 1 to 9. Risk ratings are updated on an ongoing basis and are subject to change by continuous loan monitoring processes including lending management monitoring, executive management and board committee oversight, and independent credit review. As part of the ongoing monitoring of the credit quality of the Company’s loan portfolio and methodology for calculating the allowance for credit losses, management assigns and tracks certain risk ratings to be used as credit quality indicators including trends related to (i) the weighted-average risk grade of loans, (ii) the level of classified loans, (iii) the delinquency status of loans (iv) nonperforming loans and (vi) the general economic conditions in the Houston region. Individual bankers, under the oversight of credit administration, review updated financial information for all pass grade commercial loans to reassess the risk grade on at least an annual basis. When a loan has a risk grade of Pass/Watch (4), it is still considered a pass grade loan; however, it is considered to be on management’s “watch list,” where a significant risk-modifying action is anticipated in the near term. When a loan reaches a set of internally designated criteria, including Substandard-nonperforming (7) or higher, a special assets officer generally will be involved in the monitoring of the loan on an on-going basis. The following is a general description of the risk ratings used: Watch —Loans classified as watch loans may still be of high quality, but have an element of risk added to the credit such as declining payment history, deteriorating financial position of the borrower or a decrease in collateral value. Special Mention —Loans classified as special mention have a potential weakness that deserves management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of the repayment prospects for the loan or of the institution’s credit position at some future date. They are characterized by the distinct possibility that the institution will sustain some loss if the deficiencies are not corrected. Substandard —Loans classified as substandard have well-defined weaknesses on a continuing basis and are inadequately protected by the current net worth and paying capacity of the borrower, declining collateral values, or a continuing downturn in their industry which is reducing their profits to below zero and having a significantly negative impact on their cash flow. These loans so classified are characterized by the distinct possibility that the institution will sustain some loss if the deficiencies are not corrected. Doubtful —Loans classified as doubtful have all the weaknesses inherent in those classified as substandard with the added characteristic that the weaknesses make collection or liquidation in full on the basis of currently existing facts, conditions and values, highly questionable and improbable. Loss —Loans classified as loss are to be charged-off or charged-down when payment is acknowledged to be uncertain or when the timing or value of payments cannot be determined. “Loss” is not intended to imply that the loan or some portion of it will never be paid, nor does it in any way imply that there has been a forgiveness of debt. The following table presents risk ratings by category of loan as of March 31, 2022 and December 31, 2021: As of March 31, 2022 As of December 31, 2021 Term Loans Amortized Cost Basis by Origination Year Revolving Revolving Loans Total Total 2022 2021 2020 2019 2018 Prior (Dollars in thousands) Commercial and industrial Pass $ 43,735 $ 171,146 $ 67,546 $ 37,224 $ 20,599 $ 13,664 $ 296,900 $ 67 $ 650,881 $ 625,843 Watch 978 10,836 3,197 5,461 2,964 1,872 7,212 — 32,520 33,186 Special Mention 23 1,251 312 475 240 319 880 — 3,500 5,724 Substandard 2,963 12,529 3,710 967 1,276 2,374 3,642 — 27,461 28,705 Doubtful — 88 — — — — — — 88 101 Total commercial and industrial loans $ 47,699 $ 195,850 $ 74,765 $ 44,127 $ 25,079 $ 18,229 $ 308,634 $ 67 $ 714,450 $ 693,559 Paycheck Protection Program (PPP) Pass $ — $ 68,546 $ 10,078 $ — $ — $ — $ — $ — $ 78,624 $ 145,942 Watch — — — — — — — — — — Special Mention — — — — — — — — — — Substandard — — — — — — — — — — Doubtful — — — — — — — — — — Total PPP loans $ — $ 68,546 $ 10,078 $ — $ — $ — $ — $ — $ 78,624 $ 145,942 Commercial real estate (including multi-family residential) Pass $ 243,672 $ 731,797 $ 401,058 $ 191,714 $ 123,931 $ 172,675 $ 43,899 $ — $ 1,908,746 $ 1,813,000 Watch 8,561 33,583 23,859 20,571 9,756 40,846 1,354 — 138,530 132,542 Special Mention 1,964 11,311 3,659 6,405 2,191 8,513 747 — 34,790 44,850 Substandard 19,057 24,419 19,953 16,060 18,071 15,379 2,497 — 115,436 114,229 Doubtful — — — — — — — — — — Total commercial real estate (including multi-family residential) loans $ 273,254 $ 801,110 $ 448,529 $ 234,750 $ 153,949 $ 237,413 $ 48,497 $ — $ 2,197,502 $ 2,104,621 Commercial real estate construction and land development Pass $ 59,849 $ 260,532 $ 67,609 $ 17,628 $ 6,221 $ 6,349 $ 12,004 $ — $ 430,192 $ 412,169 Watch 1,228 1,793 3,550 2,607 1,839 649 1,688 — 13,354 17,717 Special Mention — 4,792 158 1,516 357 816 — — 7,639 7,331 Substandard — 1,512 96 215 465 — — — 2,288 1,908 Doubtful — — — — — — — — — — Total commercial real estate construction and land development $ 61,077 $ 268,629 $ 71,413 $ 21,966 $ 8,882 $ 7,814 $ 13,692 $ — $ 453,473 $ 439,125 1-4 family residential (including home equity) Pass $ 50,699 $ 168,960 $ 129,031 $ 75,939 $ 40,462 $ 55,108 $ 95,267 $ 1,581 $ 617,047 $ 632,428 Watch 1,378 6,411 4,741 1,336 4,892 3,842 5,898 352 28,850 30,365 Special Mention 1,017 534 648 1,101 1,471 668 998 — 6,437 5,471 Substandard 919 1,262 2,417 3,824 1,780 4,899 1,871 — 16,972 16,807 Doubtful — — — — — — — — — — Total 1-4 family residential (including home equity) $ 54,013 $ 177,167 $ 136,837 $ 82,200 $ 48,605 $ 64,517 $ 104,034 $ 1,933 $ 669,306 $ 685,071 As of March 31, 2022 As of December 31, 2021 Term Loans Amortized Cost Basis by Origination Year Revolving Loans Revolving Loans 2022 2021 2020 2019 2018 Prior Total Total (Dollars in thousands) Residential construction Pass $ 22,064 $ 90,796 $ 14,169 $ 1,524 $ 3,186 $ 565 $ — $ — $ 132,304 $ 113,943 Watch 2,181 667 — 902 — — — — 3,750 2,981 Special Mention — — — — — — — — — — Substandard 15 691 — — — — — — 706 977 Doubtful — — — — — — — — — — Total residential construction $ 24,260 $ 92,154 $ 14,169 $ 2,426 $ 3,186 $ 565 $ — $ — $ 136,760 $ 117,901 Consumer and other Pass 5,824 19,452 2,493 1,093 748 307 2,983 — 32,900 33,638 Watch — 112 36 141 — — 33 — 322 381 Special Mention — — — — 15 — — — 15 19 Substandard — 1 — 142 10 — 9 — 162 229 Doubtful — — — — — — — — — — Total consumer and other $ 5,824 $ 19,565 $ 2,529 $ 1,376 $ 773 $ 307 $ 3,025 $ — $ 33,399 $ 34,267 Total loans Pass 425,843 1,511,229 691,984 325,122 195,147 248,668 451,053 1,648 3,850,694 3,776,963 Watch 14,326 53,402 35,383 31,018 19,451 47,209 16,185 352 217,326 217,172 Special Mention 3,004 17,888 4,777 9,497 4,274 10,316 2,625 — 52,381 63,395 Substandard 22,954 40,414 26,176 21,208 21,602 22,652 8,019 — 163,025 162,855 Doubtful — 88 — — — — — — 88 101 Total loans $ 466,127 $ 1,623,021 $ 758,320 $ 386,845 $ 240,474 $ 328,845 $ 477,882 $ 2,000 $ 4,283,514 $ 4,220,486 The following table presents the activity in the allowance for credit losses on loans by portfolio type for the three months ended March 31, 2022 and 2021: Commercial and industrial Paycheck Protection Program (PPP) Commercial real estate (including multi-family residential) Commercial real estate construction and land development 1-4 family residential (including home equity) Residential construction Consumer and other Total (Dollars in thousands) Allowance for credit losses on loans: Three Months Ended Balance December 31, 2021 $ 16,629 $ — $ 23,143 $ 6,263 $ 847 $ 975 $ 83 $ 47,940 Provision for credit losses on loans (383) — 1,989 (53) (95) 118 16 1,592 Charge-offs (341) — (255) (63) — — (48) (707) Recoveries 390 — — — — — — 390 Net charge-offs 49 — (255) (63) — — (48) (317) Balance March 31, 2022 $ 16,295 $ — $ 24,877 $ 6,147 $ 752 $ 1,093 $ 51 $ 49,215 Three Months Ended Balance December 31, 2020 $ 17,738 $ — $ 23,934 $ 6,939 $ 3,279 $ 870 $ 413 $ 53,173 Provision for credit losses on loans 1,304 — (155) 683 (1,723) (45) (134) (70) Charge-offs (404) — — — — — — (404) Recoveries 59 — — — — — — 59 Net charge-offs (345) — — — — — — (345) Balance March 31, 2021 $ 18,697 $ — $ 23,779 $ 7,622 $ 1,556 $ 825 $ 279 $ 52,758 Collateral dependent loans are secured by real estate assets, accounts receivable, inventory and equipment. For a collateral dependent loan, the Company’s evaluation process includes a valuation by appraisal or other collateral analysis adjusted for selling costs, when appropriate. This valuation is compared to the remaining outstanding principal balance of the loan. If a loss is determined to be probable, the loss is included in the allowance for credit losses on loans as a specific allocation. The following table presents the amortized cost basis of collateral dependent loans, which are individually evaluated to determine expected credit losses as of March 31, 2022 and December 31, 2021: As of March 31, 2022 Real Estate Business Assets Other Total (Dollars in thousands) Commercial and industrial $ — $ 4,952 $ — $ 4,952 Paycheck Protection Program (PPP) — — — — Real estate: Commercial real estate (including multi-family residential) 5,080 — — 5,080 Commercial real estate construction and land development — — — — 1-4 family residential (including home equity) 4,498 — — 4,498 Residential construction — — — — Consumer and other — — — — Total $ 9,578 $ 4,952 $ — $ 14,530 As of December 31, 2021 Real Estate Business Assets Other Total (Dollars in thousands) Commercial and industrial $ — $ 6,168 $ — $ 6,168 Paycheck Protection Program (PPP) — — — — Real estate: Commercial real estate (including multi-family residential) 5,494 — — 5,494 Commercial real estate construction and land development 63 — — 63 1-4 family residential (including home equity) 4,685 — — 4,685 Residential construction — — — — Consumer and other — — 158 158 Total $ 10,242 $ 6,168 $ 158 $ 16,568 The following table presents additional information regarding nonaccrual loans. No interest income was recognized on nonaccrual loans as of March 31, 2022 and December 31, 2021. As of March 31, 2022 Nonaccrual Loans with No Related Allowance Nonaccrual Loans with Related Allowance Total Nonaccrual Loans (Dollars in thousands) Commercial and industrial $ 3,787 $ 4,022 $ 7,809 Paycheck Protection Program (PPP) — — — Real estate: Commercial real estate (including multi-family residential) 12,540 2,719 15,259 Commercial real estate construction and land development — — — 1-4 family residential (including home equity) 2,046 1,019 3,065 Residential construction — — — Consumer and other 142 — 142 Total loans $ 18,515 $ 7,760 $ 26,275 As of December 31, 2021 Nonaccrual Loans with No Related Allowance Nonaccrual Loans with Related Allowance Total Nonaccrual Loans (Dollars in thousands) Commercial and industrial $ 1,824 $ 6,534 $ 8,358 Paycheck Protection Program (PPP) — — — Real estate: Commercial real estate (including multi-family residential) 9,018 3,621 12,639 Commercial real estate construction and land development 63 — 63 1-4 family residential (including home equity) 2,324 551 2,875 Residential construction — — — Consumer and other 158 34 192 Total loans $ 13,387 $ 10,740 $ 24,127 Troubled Debt Restructurings As of March 31, 2022 and December 31, 2021, the Company had a recorded investment in troubled debt restructurings of $18.8 million and $19.2 million, respectively. The Company allocated $984 thousand and $1.9 million of specific reserves for troubled debt restructurings at March 31, 2022 and December 31, 2021, respectively. The following table presents information regarding loans modified in a troubled debt restructuring during the three months ended March 31, 2022 and 2021: Three Months Ended March 31, 2022 2021 Number of Contracts Pre-Modification of Outstanding Recorded Investment Post Modification of Outstanding Recorded Investment Number of Contracts Pre-Modification of Outstanding Recorded Investment Post Modification of Outstanding Recorded Investment (Dollars in thousands) Troubled Debt Restructurings Commercial and industrial — $ — $ — — $ — $ — Paycheck Protection Program (PPP) — — — — — — Real estate: Commercial real estate (including multi-family residential) 4 1,207 1,207 1 545 545 Commercial real estate construction and land development — — — — — — 1-4 family residential (including home equity) — — — — — — Residential construction — — — — — — Consumer and other — — — — — — Total 4 $ 1,207 $ 1,207 1 $ 545 $ 545 Troubled debt restructurings resulted in no charge-offs during the three months ended March 31, 2022 and 2021, respectively. As of March 31, 2022, there were no loans modified under a troubled debt restructuring during the previous twelve-month period that subsequently defaulted during the three months ended March 31, 2022. As of March 31, 2021, there was one loan for $174 thousand modified under a troubled debt restructuring during the previous twelve-month period that subsequently defaulted during the three months ended March 31, 2021. Default is determined at 90 or more days past due. The modifications primarily related to extending the amortization periods of the loans. The Company did not grant principal reductions on any restructured loans. There were no commitments to lend additional amounts to troubled debt restructured loans for the three months ended March 31, 2022 and 2021. During the three months ended March 31, 2022, the Company added $1.2 million in new troubled debt restructurings, of which $1.2 million was still outstanding on March 31, 2022. During the three months ended March 31, 2021, the Company added $545 thousand in new troubled debt restructurings, of which $545 thousand was still outstanding on March 31, 2021. The Company granted principal and interest deferrals on outstanding loan balances to customers affected by the COVID-19 pandemic. Additionally, upon request and after meeting certain conditions, borrowers could be granted additional payment deferrals subsequent to the first deferral. In addition to the short-term modification program implemented by the Company, Section 4013 of the CARES Act and bank regulatory interagency guidance gave entities temporary relief from the accounting and disclosure requirements for troubled debt restructurings (“TDR”) indicating that a lender could conclude that the modifications are not a TDR if the borrower was less than 30 days past due as of December 31, 2019. As of March 31, 2022, 7 loans with outstanding loan balances of $3.4 million remained on deferral. If the impact of COVID-19 persists, borrower operations do not improve or if other negative events occur, such modified loans could transition to potential problem loans or into problem loans.

LEASES

LEASES	3 Months Ended
	Mar. 31, 2022
Leases [Abstract]
LEASES	LEASESLease payments over the expected term are discounted using the Company’s incremental borrowing rate for borrowings of similar terms. Generally, the Company cannot be reasonably certain about whether or not it will renew a lease until such time as the lease is within the last two years of the existing lease term. When the Company is reasonably certain that a renewal option will be exercised, it measures/remeasures the right-of-use asset and related lease liability using the lease payments specified for the renewal period or, if such amounts are unspecified, the Company generally assumes an increase (evaluated on a case-by-case basis in light of prevailing market conditions) in the lease payment over the final period of the existing lease term. There were no sale and leaseback transactions, leveraged leases or lease transactions with related parties during the three months ended March 31, 2022 and 2021. At March 31, 2022, the Company had 17 leases consisting of branch locations and office space. On the March 31, 2022 balance sheet, the right-of-use asset is classified within premises and equipment and the lease liability is included in other liabilities. The Company also owns certain office facilities which it leases to outside parties under operating lessor leases; however, such leases are not significant. All leases were classified as operating leases. Leases with an initial term of 12 months or less are not recorded on the balance sheet and the related lease expense is recognized on a straight-line basis over the lease term. Certain leases include options to renew, with renewal terms that can extend the lease term from one Supplemental lease information at the dates indicated is as follows: March 31, 2022 December 31, 2021 (Dollars in thousands) Balance Sheet: Operating lease right of use asset classified as premises and equipment $ 9,505 $ 10,196 Operating lease liability classified as other liabilities $ 9,656 $ 10,370 Weighted average lease term, in years 4.88 4.97 Weighted average discount rate 2.61 % 2.62 % Lease costs for the dates indicated is as follows: Three Months Ended March 31, 2022 2021 (Dollars in thousands) Income Statement: Operating lease cost $ 892 $ 873 Short-term lease cost — 15 Sublease income — (18) Total operating lease costs $ 892 $ 870 A maturity analysis of the Company’s lease liabilities is as follows: March 31, 2022 December 31, 2021 (Dollars in thousands) Lease payments due: Within one year $ 2,137 $ 2,951 After one but within two years 2,362 2,350 After two but within three years 1,904 1,892 After three but within four years 1,378 1,366 After four but within five years 907 894 After five years 1,586 1,594 Total lease payments 10,274 11,047 Less: discount on cash flows 618 677 Total lease liability $ 9,656 $ 10,370

FAIR VALUE

FAIR VALUE	3 Months Ended
	Mar. 31, 2022
Fair Value Disclosures [Abstract]
FAIR VALUE	FAIR VALUEThe Company uses fair value measurements to record fair value adjustments to certain assets and to determine fair value disclosures. Fair value represents the exchange price that would be received from selling an asset or paid to transfer a liability, otherwise known as an “exit price,” in the principal or most advantageous market available to the entity in an orderly transaction between market participants on the measurement date. Fair Value Hierarchy Fair value is the exchange price that would be received for an asset or paid to transfer a liability (exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The Company groups financial assets and financial liabilities measured at fair value in three levels, based on the markets in which the assets and liabilities are traded and the reliability of the assumptions used to determine fair value. These levels are: • Level 1—Quoted prices for identical assets or liabilities in active markets that the entity has the ability to access as of the measurement date. • Level 2—Significant other observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data. • Level 3—Significant unobservable inputs that reflect management’s judgment and assumptions that market participants would use in pricing an asset or liability that are supported by little or no market activity. The carrying amounts and estimated fair values of financial instruments that are reported on the balance sheet are as follows: As of March 31, 2022 Estimated Fair Value Carrying Level 1 Level 2 Level 3 Total (Dollars in thousands) Financial assets Cash and cash equivalents $ 699,384 $ 699,384 $ — $ — $ 699,384 Available for sale securities 1,790,707 — 1,790,707 — 1,790,707 Loans held for investment, net of allowance 4,234,299 — — 4,205,514 4,205,514 Accrued interest receivable 31,505 44 7,409 24,052 31,505 Financial liabilities Deposits $ 6,162,327 $ — $ 6,150,816 $ — $ 6,150,816 Accrued interest payable 3,086 — 3,086 — 3,086 Borrowed funds 89,959 — 89,969 — 89,969 Subordinated debt 108,978 — 113,458 — 113,458 As of December 31, 2021 Estimated Fair Value Carrying Level 1 Level 2 Level 3 Total (Dollars in thousands) Financial assets Cash and cash equivalents $ 757,509 $ 757,509 $ — $ — $ 757,509 Available for sale securities 1,773,765 — 1,773,765 — 1,773,765 Loans held for investment, net of allowance 4,172,546 — — 4,143,552 4,143,552 Accrued interest receivable 33,392 6 7,435 25,953 33,394 Financial liabilities Deposits $ 6,047,639 $ — $ 6,046,050 $ — $ 6,046,050 Accrued interest payable 1,753 — 1,753 — 1,753 Borrowed funds 89,956 — 73,699 — 73,699 Subordinated debt 108,847 — 113,355 — 113,355 The following tables present fair values for assets and liabilities measured at fair value on a recurring basis. There were no liabilities measured at fair value on a recurring basis as of March 31, 2022. March 31, 2022 Level 1 Level 2 Level 3 Total (Dollars in thousands) Financial assets Available for sale securities: U.S. government and agency securities $ — $ 413,095 $ — $ 413,095 Municipal securities — 459,703 — 459,703 Agency mortgage-backed pass-through securities — 300,866 — 300,866 Agency collateralized mortgage obligations — 484,118 — 484,118 Corporate bonds and other — 132,925 — 132,925 Total available for sale securities $ — $ 1,790,707 $ — $ 1,790,707 December 31, 2021 Level 1 Level 2 Level 3 Total (Dollars in thousands) Financial assets Available for sale securities: U.S. government and agency securities $ — $ 400,551 $ — $ 400,551 Municipal securities — 497,100 — 497,100 Agency mortgage-backed pass-through securities — 302,596 — 302,596 Agency collateralized mortgage obligations — 441,056 — 441,056 Corporate bonds and other — 132,462 — 132,462 Total available for sale securities $ — $ 1,773,765 $ — $ 1,773,765 There were no transfers between levels during the three months ended March 31, 2022 or 2021. Assets measured at fair value on a nonrecurring basis are summarized in the table below. There were no liabilities measured at fair value on a nonrecurring basis at March 31, 2022 and December 31, 2021. As of March 31, 2022 Level 1 Level 2 Level 3 (Dollars in thousands) Loans: Commercial and industrial $ — $ — $ 7,073 Commercial real estate (including multi- family residential) — — 54,569 Commercial real estate construction and land development — — 192 1-4 family residential (including home equity) — — 2,322 Residential construction — — 538 Branch assets held for sale — — 3,598 $ — $ — $ 68,292 As of December 31, 2021 Level 1 Level 2 Level 3 (Dollars in thousands) Loans: Commercial and industrial $ — $ — $ 6,960 Commercial real estate (including multi- family residential) — — 34,627 Commercial real estate construction and land development — — 72 1-4 family residential (including home equity) — — 2,806 Residential construction — — 500 Branch assets held for sale 2,925 — — $ 2,925 $ — $ 44,965 Individually Evaluated Loans with Specific Allocation of Allowance for Credit Losses on Loans A loan is considered to be a collateral dependent loan when, based on current information and events, the Company expects repayment of the financial assets to be provided substantially through the operation or sale of the collateral and the Company has determined that the borrower is experiencing financial difficulty as of the measurement date. The allowance for credit losses on loans is measured by estimating the fair value of the loan based on the present value of expected cash flows, the market price of the loan, or the underlying fair value of the loan’s collateral. For real estate loans, fair value of the loan’s collateral is generally determined by third-party appraisals or internal evaluations, which are then adjusted for the estimated selling and closing costs related to liquidation of the collateral. For this asset class, the actual valuation methods (income, sales comparable, or cost) vary based on the status of the project or property. For example, land is generally based on the sales comparable method while construction is based on the income and/or sales comparable methods. The unobservable inputs may vary depending on the individual assets with no one of the three methods being the predominant approach. The Company reviews the third-party appraisal for appropriateness and adjusts the value downward to consider selling and closing costs, which typically range from 5% to 10% of the appraised value. For non-real estate loans, fair value of the loan’s collateral may be determined using an appraisal, net book value per the borrower’s financial statements, or aging reports, adjusted or discounted based on management’s historical knowledge, changes in market conditions from the time of the valuation, and management’s expertise and knowledge of the client and client’s business. Other Real Estate Owned and Branch Assets Held for Sale Other real estate owned is comprised of real estate acquired in partial or full satisfaction of loans. Branch assets held for sale are assets that are expected to be sold as a result of the closure of a banking location or land that was acquired for future expansion but for which banking use is no longer contemplated. Other real estate owned and branch assets held for sale are recorded at its estimated fair value less estimated selling and closing costs at the date of transfer. Any excess of the related loan balance over the fair value less expected selling costs is charged to the allowance. Subsequent declines in fair value are reported as adjustments to the carrying amount and are recorded against earnings. The fair value of other real estate owned and branch assets held for sale are determined using third-party appraisals or other indications of value based on recent comparable sales of similar properties or assumptions generally observable in the marketplace. For this asset class, the actual valuation methods (income, sales comparable or cost) vary based on the status of the project or property. For example, land is generally based on the sales comparable method while construction is based on the income and/or sales comparable methods. The unobservable inputs may vary depending on the individual assets with no one of the three methods being the predominant approach. The Company reviews the third party appraisal for appropriateness and adjusts the value downward to consider selling and closing costs, which typically range from 5% to 10% of the appraised value. At March 31, 2022 and December 31, 2021, the balance of other real estate owned was zero.

DEPOSITS

DEPOSITS	3 Months Ended
	Mar. 31, 2022
Deposit Liabilities [Abstract]
DEPOSITS	DEPOSITSTime deposits that met or exceeded the Federal Deposit Insurance Corporation insurance limit of $250 thousand at March 31, 2022 and December 31, 2021 were $625.2 million and $707.5 million, respectively. Scheduled maturities of time deposits for the next five years are as follows (dollars in thousands): Within one year $ 951,588 After one but within two years 121,161 After two but within three years 48,699 After three but within four years 27,255 After four but within five years 36,312 Total $ 1,185,015 The Company had $303.7 million and $306.4 million of brokered deposits as of March 31, 2022 and December 31, 2021, respectively. There were no concentrations of deposits with any one depositor at March 31, 2022 and December 31, 2021.

DERIVATIVE INSTRUMENTS

DERIVATIVE INSTRUMENTS	3 Months Ended
	Mar. 31, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVE INSTRUMENTS	DERIVATIVE INSTRUMENTS The Company entered into a financial derivative in 2020. Financial derivatives are reported at fair value in other assets or other liabilities. The accounting for changes in the fair value of a derivative depends on whether it has been designated and qualifies as part of a hedging relationship. Derivatives designated as cash flow hedges For derivative instruments that are designated and qualify as a cash flow hedge, the aggregate fair value of the derivative instrument is recorded in other assets or other liabilities with any gain or loss related to changes in fair value recorded in accumulated other comprehensive income, net of tax. The gain or loss is reclassified into earnings in the same period during which the hedged asset or liability affects earnings and is presented in the same income statement line item as the earnings effect of the hedged asset or liability. The Company uses forward cash flow hedges in an effort to manage future interest rate exposure on liabilities. The hedging strategy converts the variable interest rate on liabilities to a fixed interest rate and is used in an effort to protect the Company from floating interest rate variability. During the second quarter of 2021, the Company terminated the interest rate swap designated as a cash flow hedge prior to its maturity date resulting in a net gain of approximately $225 thousand recognized into other noninterest expenses as the forecasted transaction will not occur. The Company did not have any derivatives designated as cash flow hedges outstanding at March 31, 2022. The effects of the Company’s cash flow hedge relationship on the statement of comprehensive income during the three months ended March 31, 2022 and 2021 were as follows, before tax: Amount of Gain Recognized in Other Comprehensive Loss Three Months Ended March 31, 2022 2021 (Dollars in thousands) Liability derivatives Interest rate swaps $ — $ 1,824

BORROWINGS AND BORROWING CAPACI

BORROWINGS AND BORROWING CAPACITY	3 Months Ended
	Mar. 31, 2022
Debt Disclosure [Abstract]
BORROWINGS AND BORROWING CAPACITY	BORROWINGS AND BORROWING CAPACITYThe Company has an available line of credit with the Federal Home Loan Bank (“FHLB”) of Dallas, which allows the Company to borrow on a collateralized basis. FHLB advances are used to manage liquidity as needed. The advances are secured by a blanket lien on certain loans. Maturing advances are replaced by drawing on available cash, making additional borrowings or through increased customer deposits. At March 31, 2022, the Company had a total borrowing capacity of $2.54 billion, of which $1.12 billion was available and $1.42 billion was outstanding. FHLB advances of $90.0 million were outstanding at March 31, 2022, at a weighted average interest rate of 0.74%. Letters of credit were $1.33 billion at March 31, 2022, of which $1.15 billion will expire during the remaining months of 2022, $101.2 million will expire in 2023, $57.9 million will expire in 2024 and $16.0 million will expire in 2025. On December 28, 2018, the Company amended its revolving credit agreement to increase the maximum commitment to advance funds to $45.0 million which reduces annually by $7.5 million beginning in December 2020 and on each December 22nd each year thereafter. The Company is required to repay any outstanding balance in excess of the then-current maximum commitment amount. The revised agreement will mature in December 2025 and is secured by 100% of the capital stock of the Bank. At March 31, 2022, the balance on the revolving credit agreement was zero. The credit agreement contains certain restrictive covenants. At March 31, 2022, the Company believes it was in compliance with all such debt covenants. The interest rate on the debt is the Prime Rate minus 25 basis points, or 3.25% at March 31, 2022, and is paid quarterly.

SUBORDINATED DEBT

SUBORDINATED DEBT	3 Months Ended
	Mar. 31, 2022
Subordinated Borrowings [Abstract]
SUBORDINATED DEBT	SUBORDINATED DEBT Junior Subordinated Debentures On January 1, 2015, the Company acquired F&M Bancshares, Inc. and assumed Farmers & Merchants Capital Trust II and Farmers & Merchants Capital Trust III. Each of these trusts is a capital or statutory business trust organized for the sole purpose of issuing trust securities and investing the proceeds in the Company’s junior subordinated debentures. The preferred trust securities of each trust represent preferred beneficial interests in the assets of the respective trusts and are subject to mandatory redemption upon payment of the junior subordinated debentures held by the trust. The common securities of each trust are wholly owned by the Company. Each trust’s ability to pay amounts due on the trust preferred securities is solely dependent upon the Company making payment on the related junior subordinated debentures. The debentures, which are the only assets of each trust, are subordinate and junior in right of payment to all of the Company’s present and future senior indebtedness. The Company has fully and unconditionally guaranteed each trust’s obligations under the trust securities issued by such trust to the extent not paid or made by such trust, provided such trust has funds available for such obligations. The junior subordinated debentures are included in Tier 1 capital under current regulatory guidelines and interpretations. Under the provisions of each issue of the debentures, the Company has the right to defer payment of interest on the debentures at any time, or from time to time, for periods not exceeding five years. If interest payments on either issue of the debentures are deferred, the distributions on the applicable trust preferred securities and common securities will also be deferred. The Company assumed the junior subordinated debentures with an aggregate original principal amount of $11.3 million and a current carrying value at March 31, 2022 of $9.8 million. At acquisition, the Company recorded a discount of $2.5 million on the debentures. The difference between the carrying value and contractual balance will be recognized as a yield adjustment over the remaining term for the debentures. At March 31, 2022, the Company had $11.3 million outstanding in junior subordinated debentures issued to the Company’s unconsolidated subsidiary trusts. The junior subordinated debentures are included in tier 1 capital under current regulatory guidelines and interpretations. A summary of pertinent information related to the Company’s issues of junior subordinated debentures outstanding at March 31, 2022 is set forth in the table below: Description Issuance Date Trust Preferred Securities Outstanding Interest Rate (1) Junior Subordinated Debt Owed to Trusts Maturity Date (2) (Dollars in thousands) Farmers & Merchants Capital Trust II November 13, 2003 $ 7,500 3 month LIBOR + 3.00% $ 7,732 November 8, 2033 Farmers & Merchants Capital Trust III June 30, 2005 3,500 3 month LIBOR + 1.80% 3,609 July 7, 2035 $ 11,341 (1) The 3-month LIBOR in effect as of March 31, 2022 was 0.83971%. (2) All debentures are currently callable. Subordinated Notes In December 2017, the Bank completed the issuance, through a private placement, of $40.0 million aggregate principal amount of Fixed-to-Floating Rate Subordinated Notes (the "Bank Notes") due December 15, 2027. The Bank Notes were issued at a price equal to 100% of the principal amount, resulting in net proceeds to the Bank of $39.4 million. The Bank Notes bear a fixed interest rate of 5.25% per annum until (but excluding) December 15, 2022, payable semi-annually in arrears. From December 15, 2022, the Bank Notes will bear a floating rate of interest equal to 3-Month LIBOR + 3.03% until the Bank Notes mature on December 15, 2027, or such earlier redemption date, payable quarterly in arrears. The Bank Notes will be redeemable by the Bank, in whole or in part, on or after December 15, 2022 or, in whole but not in part, upon the occurrence of certain specified tax events, capital events or investment company events. Any redemption will be at a redemption price equal to 100% of the principal amount of Bank Notes being redeemed, plus accrued and unpaid interest, and will be subject to, and require, prior regulatory approval. The Bank Notes are not subject to redemption at the option of the holders. In September 2019, the Company completed the issuance of $60.0 million aggregate principal amount of Fixed-to-Floating Rate Subordinated Notes (the "Company Notes") due October 1, 2029. The Company Notes were issued at a price equal to 100% of the principal amount, resulting in net proceeds to the Company of $58.6 million. The Company used the net proceeds from the offering to support its growth and for general corporate purposes. The Company Notes bear a fixed interest rate of 4.70% per annum until (but excluding) October 1, 2024, payable semi-annually in arrears on April 1 and October 1, commencing on April 1, 2020. Thereafter, from October 1, 2024 through the maturity date, October 1, 2029, or earlier redemption date, the Company Notes will bear interest at a floating rate equal to the then-current three-month LIBOR, plus 313 basis points (3.13%) for each quarterly interest period (subject to certain provisions set forth under “Description of the Notes—Interest Rates and Interest Payment Dates” included in the Prospectus Supplement), payable quarterly in arrears on January 1, April 1, July 1 and October 1 of each year. Any redemption will be at a redemption price equal to 100% of the principal amount of Company Notes being redeemed, plus accrued and unpaid interest, and will be subject to, and require, prior regulatory approval. The Company Notes are not subject to redemption at the option of the holders.

INCOME TAXES

INCOME TAXES	3 Months Ended
	Mar. 31, 2022
Income Tax Disclosure [Abstract]
INCOME TAXES	INCOME TAXES The amount of the Company’s federal and state income tax expense is influenced by the amount of pre-tax income, the amount of tax-exempt income and the amount of other nondeductible items. For the three months ended March 31, 2022, income tax expense was $4.2 million, compared with $3.9 million for the three months ended March 31, 2021. The effective income tax rate for the three months ended March 31, 2022 was 18.4%, compared to 17.7% for the three months ended March 31, 2021. Interest and penalties related to tax positions are recognized in the period in which they begin accruing or when the entity claims the position that does not meet the minimum statutory thresholds. The Company does not have any uncertain tax positions and does not have any interest or penalties recorded in the income statement for the three months ended March 31, 2022. The Company is no longer subject to examination by the U.S. Federal Tax Jurisdiction for the years prior to 2018.

STOCK BASED COMPENSATION

STOCK BASED COMPENSATION	3 Months Ended
	Mar. 31, 2022
Share-based Payment Arrangement [Abstract]
STOCK BASED COMPENSATION	STOCK BASED COMPENSATION At March 31, 2022, the Company had two stock-based employee compensation plans with awards outstanding. In connection with the acquisition of Post Oak Bancshares, Inc. on October 1, 2018, the Company assumed the Post Oak Bancshares, Inc. Stock Option Plan, under which no additional awards will be issued. During 2019, the Company’s Board of Directors and shareholders approved the 2019 Amended and Restated Stock Awards and Incentive Plan (the “Plan”) covering certain awards of stock-based compensation to key employees and directors of the Company. Under the Plan, the Company is authorized to issue a maximum aggregate of 3,200,000 shares of stock, up to 1,800,000 of which may be issued through incentive stock options. The Company accounts for stock based employee compensation plans using the fair value-based method of accounting. The Company recognized total stock based compensation expense of $959 thousand for the three months ended March 31, 2022, and $820 thousand for the three months ended March 31, 2021. Stock Options Options to purchase a total of 1,309,231 shares of Company stock have been granted as of March 31, 2022. Options are exercisable for up to 10 years from the date of the grant and, dependent on the terms of the applicable award agreement generally vest four years after the date of grant. The fair value of stock options granted is estimated at the date of grant using the Black-Scholes option-pricing model. A summary of the activity in the stock option plans during the three months ended March 31, 2022 is set forth below: Number of Weighted Weighted Aggregate (Shares in thousands) (In years) (Dollars in thousands) Options outstanding, January 1, 2022 283 $ 22.74 2.90 $ 5,508 Options granted — — Options exercised (33) 20.21 Options forfeited (6) 31.73 Options outstanding, March 31, 2022 244 $ 22.86 2.71 $ 5,330 Options vested and exercisable, March 31, 2022 244 $ 22.86 2.71 $ 5,330 As of March 31, 2022, there was no unrecognized compensation cost related to nonvested stock options granted under the Plan. Restricted Stock Awards During the three months ended March 31, 2022, the Company issued 1,743 shares of restricted stock. The shares of restricted stock generally vest over a period of four years and are considered outstanding at the date of issuance. The Company accounts for shares of restricted stock by recording the fair value of the grant on the award date as compensation expense over the vesting period. A summary of the activity of the nonvested shares of restricted stock during the three months ended March 31, 2022 is as follows: Number of Weighted (Shares in thousands) Nonvested share awards outstanding, January 1, 2022 168 $ 34.23 Share awards granted 2 42.21 Share awards vested (17) 38.46 Unvested share awards forfeited or cancelled (1) 34.63 Nonvested share awards outstanding, March 31, 2022 152 $ 33.86 As of March 31, 2022, there was $3.6 million of total unrecognized compensation cost related to the restricted stock awards which is expected to be recognized over a weighted-average period of 2.28 years. Performance Share Units (“PSUs”) PSUs are earned subject to certain performance goals being met after the two-year performance period and will be settled in shares of Allegiance Common Stock following a one-year service period. There were no PSUs awarded during the three months ended March 31, 2022. The Company awarded 56,255 PSUs during the three months ended March 31, 2021. The grant date fair value of the PSUs is based on the probable outcome of the applicable performance conditions and is calculated at target based on a combination of the closing market price of our common stock on the grant date and a Monte Carlo simulated fair value in accordance with ASC 718. At March 31, 2022, there was $1.6 million of unrecognized compensation expense related to the PSUs, which is expected to be recognized over a weighted-average period of 1.76 years.

OFF-BALANCE SHEET ARRANGEMENTS,

OFF-BALANCE SHEET ARRANGEMENTS, COMMITMENTS AND CONTINGENCIES	3 Months Ended
	Mar. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
OFF-BALANCE SHEET ARRANGEMENTS, COMMITMENTS AND CONTINGENCIES	OFF-BALANCE SHEET ARRANGEMENTS, COMMITMENTS AND CONTINGENCIESIn the normal course of business, the Company enters into various transactions, which, in accordance with accounting principles generally accepted in the United States, are not included in the Company’s consolidated balance sheets. The Company enters into these transactions to meet the financing needs of its customers. These transactions include commitments to extend credit and standby and commercial letters of credit, which involve to varying degrees elements of credit risk and interest rate risk in excess of the amounts recognized in the consolidated balance sheets. The Company uses the same credit policies in making commitments and conditional obligations as it does for on balance sheet instruments. The contractual amounts of financial instruments with off-balance sheet risk are as follows: March 31, 2022 December 31, 2021 Fixed Variable Fixed Variable (Dollars in thousands) Commitments to extend credit $ 534,330 $ 632,875 $ 484,441 $ 607,106 Standby letters of credit 7,992 13,718 8,536 12,624 Total $ 542,322 $ 646,593 $ 492,977 $ 619,730 Commitments to extend credit include lines of credit as well as commitments to make new loans. Commitments to make loans are generally made for an approval period of 120 days or fewer. As of March 31, 2022, the funded fixed rate loan commitments had interest rates ranging from 1.00% to 13.49% with a weighted average maturity and rate of 3.70 years and 4.72% , respectively. As of December 31, 2021, the funded fixed rate loan commitments had interest rates ranging from 1.00% to 13.49% with a weighted average maturity and rate of 3.71 years and 4.68% , respectively. Allowance for Credit Losses on Unfunded Commitments . In addition to the allowance for credit losses on loans, the Company has established an allowance for credit losses on unfunded commitments, classified in other liabilities and adjusted as a provision for credit loss expense. The allowance represents estimates of expected credit losses over the contractual period in which there is exposure to credit risk via a contractual obligation to extend credit, unless that obligation is unconditionally cancellable by the Company. The estimate includes consideration of the likelihood that funding will occur and an estimate of expected credit losses on the commitments expected to fund. The estimate of commitments expected to fund is informed by historical analysis looking at utilization rates. The expected credit loss rates applied to the commitments expected to fund is informed by the general valuation allowance utilized for outstanding balances with the same underlying assumptions and drivers. The allowance for credit losses on unfunded commitments as of March 31, 2022 and December 31, 2021 was $5.5 million and $5.3 million, respectively. This reserve is maintained at a level management believes to be sufficient to absorb losses arising from unfunded loan commitments. The following table details activity in the allowance for credit losses on unfunded commitments (dollars in thousands): Balance at December 31, 2021 $ 5,298 Provision for credit losses on unfunded commitments 222 Balance at March 31, 2022 $ 5,520 Balance at December 31, 2020 $ 4,697 Provision for credit losses on unfunded commitments 709 Balance at March 31, 2021 $ 5,406 Litigation From time to time, the Company is subject to claims and litigation arising in the ordinary course of business. In the opinion of management, the Company is not party to any legal proceedings the resolution of which it believes would have a material adverse effect on the Company’s business, prospects, financial condition, liquidity, results of operation, cash flows or capital levels. However, one or more unfavorable outcomes in any claim or litigation against the Company could have a material adverse effect for the period in which such claim or litigation is resolved. In addition, regardless of their merits or their ultimate outcomes, such matters are costly, divert management’s attention and may materially adversely affect the Company’s reputation, even if resolved in its favor. The Company intends to defend itself vigorously against any future claims or litigation.

REGULATORY CAPITAL MATTERS

REGULATORY CAPITAL MATTERS	3 Months Ended
	Mar. 31, 2022
Regulatory Capital Matters [Abstract]
REGULATORY CAPITAL MATTERS	REGULATORY CAPITAL MATTERSThe Company and the Bank are subject to various regulatory capital requirements administered by the federal banking agencies. Capital adequacy guidelines, and for banks, prompt corrective action regulations, involve quantitative measures of assets, liabilities and certain off balance sheet items calculated under regulatory accounting practices. Capital amounts and classifications are also subject to qualitative judgments by regulators about components, risk weightings and other factors. Failure to meet minimum capital requirements can cause regulators to initiate actions that, if undertaken, could have a direct material effect on the Company’s consolidated financial statements. The final rules implementing Basel Committee on Banking Supervision's capital guideline for U.S. Banks (Basel III Rules) were fully phased in when the capital conservation buffer reached 2.5%. Management believes as of March 31, 2022 and December 31, 2021, the Company and the Bank met all capital adequacy requirements to which they were then subject. Prompt corrective action regulations provide five classifications: well capitalized, adequately capitalized, undercapitalized, significantly undercapitalized, and critically undercapitalized, although these terms are not used to represent overall financial condition. If less than well capitalized, regulatory approval is required to accept brokered deposits. If undercapitalized, capital distributions are limited, as is asset growth and expansion, and capital restoration plans are required. The following is a summary of the Company’s and the Bank’s actual and required capital ratios as of March 31, 2022 and December 31, 2021: Actual Minimum Required for Capital Adequacy Purposes Minimum Required Plus Capital Conservation Buffer To Be Categorized As Well-Capitalized Under Amount Ratio Amount Ratio Amount Ratio Amount Ratio (Dollars in thousands) ALLEGIANCE BANCSHARES, INC. (Consolidated) As of March 31, 2022 Total Capital (to risk weighted assets) $ 741,722 15.76 % $ 376,611 8.00 % $ 494,302 10.50 % N/A N/A Common Equity Tier 1 Capital (to risk weighted assets) 578,009 12.28 % 211,844 4.50 % 329,535 7.00 % N/A N/A Tier 1 Capital (to risk weighted assets) 587,790 12.49 % 282,458 6.00 % 400,149 8.50 % N/A N/A Tier 1 Capital (to average tangible assets) 587,790 8.37 % 280,972 4.00 % 280,972 4.00 % N/A N/A As of December 31, 2021 Total Capital (to risk weighted assets) $ 722,010 16.08 % $ 359,214 8.00 % $ 471,468 10.50 % N/A N/A Common Equity Tier 1 Capital (to risk weighted assets) 559,926 12.47 % 202,058 4.50 % 314,312 7.00 % N/A N/A Tier 1 Capital (to risk weighted assets) 569,678 12.69 % 269,410 6.00 % 381,665 8.50 % N/A N/A Tier 1 Capital (to average tangible assets) 569,678 8.53 % 267,286 4.00 % 267,286 4.00 % N/A N/A ALLEGIANCE BANK As of March 31, 2022 Total Capital (to risk weighted assets) $ 681,690 14.50 % $ 376,164 8.00 % $ 493,715 10.50 % $ 470,205 10.00 % Common Equity Tier 1 Capital (to risk weighted assets) 587,047 12.48 % 211,592 4.50 % 329,144 7.00 % 305,633 6.50 % Tier 1 Capital (to risk weighted assets) 587,047 12.48 % 282,123 6.00 % 399,674 8.50 % 376,164 8.00 % Tier 1 Capital (to average tangible assets) 587,047 8.37 % 280,607 4.00 % 280,607 4.00 % 350,758 5.00 % As of December 31, 2021 Total Capital (to risk weighted assets) $ 659,596 14.71 % $ 358,793 8.00 % $ 470,916 10.50 % $ 448,491 10.00 % Common Equity Tier 1 Capital (to risk weighted assets) 566,483 12.63 % 201,821 4.50 % 313,944 7.00 % 291,519 6.50 % Tier 1 Capital (to risk weighted assets) 566,483 12.63 % 269,095 6.00 % 381,217 8.50 % 358,793 8.00 % Tier 1 Capital (to average tangible assets) 566,483 8.49 % 266,944 4.00 % 266,944 4.00 % 333,680 5.00 %

EARNINGS PER COMMON SHARE

EARNINGS PER COMMON SHARE	3 Months Ended
	Mar. 31, 2022
Earnings Per Share [Abstract]
EARNINGS PER COMMON SHARE	EARNINGS PER COMMON SHARE Diluted earnings per common share is computed using the weighted-average number of common shares determined for the basic earnings per common share computation plus the potential dilution that could occur if securities or other contracts to issue common stock were exercised or converted into common stock using the treasury stock method. Outstanding stock options and PSUs issued by the Company represent the only dilutive effect reflected in diluted weighted average shares. Restricted shares are considered outstanding at the date of grant, accounted for as participating securities and included in basic and diluted weighted average common shares outstanding. Performance share units that vest based on the Company’s performance and service conditions that have not been achieved as of the end of the period are not included in basic and diluted weighted average common shares outstanding. Three Months Ended March 31, 2022 2021 Amount Per Share Amount Per Share (Amounts in thousands, except per share data) Net income attributable to shareholders $ 18,657 $ 18,010 Basic: Weighted average shares outstanding 20,363 $ 0.92 20,140 $ 0.89 Diluted: Add incremental shares for: Dilutive effect of stock option exercises and performance share units 163 202 Total 20,526 $ 0.91 20,342 $ 0.89 There were no antidilutive shares as of March 31, 2022 and 2021, respectively.

NATURE OF OPERATIONS AND SUMM_2

NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING AND REPORTING POLICIES (Policies)	3 Months Ended
	Mar. 31, 2022
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation -The accompanying unaudited condensed consolidated financial statements of the Company have been prepared in accordance with U.S. generally accepted accounting principles ("GAAP") for interim financial information and in accordance with guidance provided by the Securities and Exchange Commission. Accordingly, the condensed consolidated financial statements do not include all of the information and footnotes required by GAAP for complete financial statements. The preparation of consolidated financial statements in conformity with GAAP requires management to make estimates and assumptions that affect the amounts reported in the consolidated financial statements and accompanying notes. Actual results could differ from those estimates. In the opinion of management, the accompanying unaudited condensed consolidated financial statements reflect all adjustments considered necessary for a fair presentation of the financial position, results of operations and cash flows of the Company on a consolidated basis, and all such adjustments are of a normal recurring nature. Transactions between the Company and the Bank have been eliminated. The condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and footnotes thereto included in the Company’s Annual Report on Form 10-K for the fiscal year ended December 31, 2021. Operating results for the three months ended March 31, 2022 are not necessarily indicative of the results that may be expected for the year ending December 31, 2022. Pending Merger of Equals On November 8, 2021, Allegiance and CBTX, Inc., jointly announced that they entered into a definitive merger agreement pursuant to which the companies will combine in an all-stock merger of equals. CBTX reported total assets of $4.49 billion as of December 31, 2021. Under the terms of the definitive merger agreement, Allegiance shareholders will receive 1.4184 shares of CBTX, Inc. common stock for each share of Allegiance common stock they own. Following the completion of the merger, we estimate that former Allegiance shareholders will own approximately 54% and former CBTX, Inc. shareholders will own approximately 46% of the combined company. The companies have submitted the required regulatory filings and, subject to satisfaction or in some cases waiver of the closing conditions, including approval of the merger agreement by both companies’ shareholders, the parties anticipate closing in the second quarter of the year. Each company has scheduled a special meeting for May 24, 2022 at which its respective shareholders will consider and vote on the merger agreement and other related matters.
New Accounting Standards	New Accounting Standards Newly Issued But Not Yet Effective Accounting Standards ASU 2022-02, "Financial Instruments – Credit Losses (Topic 326): Troubled Debt Restructurings and Vintage Disclosures." ASU 2022-02 eliminates the TDR accounting model for creditors that have already adopted Topic 326, which is commonly referred to as the current expected credit loss ("CECL") model. The FASB’s decision to eliminate the TDR accounting model is in response to

GOODWILL AND CORE DEPOSIT INT_2

GOODWILL AND CORE DEPOSIT INTANGIBLE ASSETS (Tables)	3 Months Ended
	Mar. 31, 2022
Goodwill and Intangible Assets Disclosure [Abstract]
Schedule of Intangible Assets and Goodwill	Changes in the carrying amount of the Company’s goodwill and core deposit intangible assets were as follows: Goodwill Core Deposit (Dollars in thousands) Balance as of December 31, 2020 $ 223,642 $ 17,954 Amortization — (3,296) Balance as of December 31, 2021 223,642 14,658 Amortization — (751) Balance as of March 31, 2022 $ 223,642 $ 13,907
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense	The estimated aggregate future amortization expense for core deposit intangible assets remaining as of March 31, 2022 is as follows (dollars in thousands): Remaining 2022 $ 2,252 2023 2,323 2024 2,188 2025 2,061 2026 1,941 Thereafter 3,142 Total $ 13,907

SECURITIES (Tables)

SECURITIES (Tables)	3 Months Ended
	Mar. 31, 2022
Investments, Debt and Equity Securities [Abstract]
Available-for-sale Securities	The amortized cost and fair value of investment securities were as follows: March 31, 2022 Amortized Gross Gross Fair (Dollars in thousands) Available for Sale U.S. government and agency securities $ 424,171 $ 300 $ (11,376) $ 413,095 Municipal securities 470,404 7,449 (18,150) 459,703 Agency mortgage-backed pass-through securities 322,883 102 (22,119) 300,866 Agency collateralized mortgage obligations 518,067 81 (34,030) 484,118 Corporate bonds and other 135,701 1,157 (3,933) 132,925 Total $ 1,871,226 $ 9,089 $ (89,608) $ 1,790,707 December 31, 2021 Amortized Gross Gross Fair (Dollars in thousands) Available for Sale U.S. government and agency securities $ 401,811 $ 414 $ (1,674) $ 400,551 Municipal securities 468,164 30,483 (1,547) 497,100 Agency mortgage-backed pass-through securities 307,097 2,075 (6,576) 302,596 Agency collateralized mortgage obligations 443,277 2,026 (4,247) 441,056 Corporate bonds and other 130,314 2,922 (774) 132,462 Total $ 1,750,663 $ 37,920 $ (14,818) $ 1,773,765
Investments Classified by Contractual Maturity Date	The amortized cost and fair value of investment securities at March 31, 2022, by contractual maturity, are shown below. Expected maturities may differ from contractual maturities if borrowers have the right to call or prepay obligations at any time with or without call or prepayment penalties. Amortized Fair (Dollars in thousands) Due in one year or less $ 5,817 $ 5,867 Due after one year through five years 261,665 251,280 Due after five years through ten years 158,863 157,109 Due after ten years 603,931 591,467 Subtotal 1,030,276 1,005,723 Agency mortgage-backed pass-through securities and collateralized mortgage obligations 840,950 784,984 Total $ 1,871,226 $ 1,790,707
Available-for-sale Securities, Continuous Unrealized Loss Position, Fair Value	Securities with unrealized losses segregated by length of time such securities have been in a continuous loss position are as follows: March 31, 2022 Less than 12 Months More than 12 Months Total Estimated Unrealized Estimated Unrealized Estimated Unrealized (Dollars in thousands) Available for Sale U.S. government and agency securities $ 360,995 $ (11,376) $ — $ — $ 360,995 $ (11,376) Municipal securities 223,001 (15,908) 14,746 (2,242) 237,747 (18,150) Agency mortgage-backed pass-through securities 248,653 (17,462) 38,031 (4,657) 286,684 (22,119) Agency collateralized mortgage obligations 462,888 (33,458) 12,725 (572) 475,613 (34,030) Corporate bonds and other 71,447 (3,933) — — 71,447 (3,933) Total $ 1,366,984 $ (82,137) $ 65,502 $ (7,471) $ 1,432,486 $ (89,608) December 31, 2021 Less than 12 Months More than 12 Months Total Estimated Unrealized Estimated Unrealized Estimated Unrealized (Dollars in thousands) Available for Sale U.S. government and agency securities $ 340,161 $ (1,674) $ — $ — $ 340,161 $ (1,674) Municipal securities 70,019 (1,185) 10,435 (362) 80,454 (1,547) Agency mortgage-backed pass-through securities 219,610 (5,675) 21,627 (901) 241,237 (6,576) Agency collateralized mortgage obligations 328,300 (3,994) 13,820 (253) 342,120 (4,247) Corporate bonds and other 38,210 (774) — — 38,210 (774) Total $ 996,300 $ (13,302) $ 45,882 $ (1,516) $ 1,042,182 $ (14,818)

LOANS AND ALLOWANCE FOR CREDI_2

LOANS AND ALLOWANCE FOR CREDIT LOSSES (Tables)	3 Months Ended
	Mar. 31, 2022
Receivables [Abstract]
Schedule of Accounts, Notes, Loans and Financing Receivable	The loan portfolio balances, net of unearned income and fees, consist of various types of loans primarily made to borrowers located within Texas and are segregated by class of loan as follows: March 31, 2022 December 31, 2021 (Dollars in thousands) Commercial and industrial $ 714,450 $ 693,559 Paycheck Protection Program (PPP) 78,624 145,942 Real estate: Commercial real estate (including multi-family residential) 2,197,502 2,104,621 Commercial real estate construction and land development 453,473 439,125 1-4 family residential (including home equity) 669,306 685,071 Residential construction 136,760 117,901 Consumer and other 33,399 34,267 Total loans 4,283,514 4,220,486 Allowance for credit losses on loans (49,215) (47,940) Loans, net $ 4,234,299 $ 4,172,546
Past Due Financing Receivables	An aging analysis of the recorded investment in past due loans, segregated by class of loans, is included below. The Company defines recorded investment as the outstanding loan balances including net deferred loan fees, and excluding accrued interest receivable of $24.1 million and $26.0 million as of March 31, 2022 and December 31, 2021, respectively, due to immateriality. March 31, 2022 Loans Past Due and Still Accruing Nonaccrual Current Total 30-89 90 or More Total Past (Dollars in thousands) Commercial and industrial $ 3,149 $ — $ 3,149 $ 7,809 $ 703,492 $ 714,450 Paycheck Protection Program (PPP) — — — — 78,624 78,624 Real estate: Commercial real estate (including multi-family residential) 8,391 — 8,391 15,259 2,173,852 2,197,502 Commercial real estate construction and land development 2,611 — 2,611 — 450,862 453,473 1-4 family residential (including home equity) 1,539 — 1,539 3,065 664,702 669,306 Residential construction 2,431 — 2,431 — 134,329 136,760 Consumer and other 28 — 28 142 33,229 33,399 Total loans $ 18,149 $ — $ 18,149 $ 26,275 $ 4,239,090 $ 4,283,514 December 31, 2021 Loans Past Due and Still Accruing Nonaccrual Current Total 30-89 90 or More Total Past (Dollars in thousands) Commercial and industrial $ 1,786 $ — $ 1,786 $ 8,358 $ 683,415 $ 693,559 Paycheck Protection Program (PPP) — — — — 145,942 145,942 Real estate: Commercial real estate (including multi-family residential) 7,689 — 7,689 12,639 2,084,293 2,104,621 Commercial real estate construction and land development 619 — 619 63 438,443 439,125 1-4 family residential (including home equity) 2,422 — 2,422 2,875 679,774 685,071 Residential construction 1,243 — 1,243 — 116,658 117,901 Consumer and other 23 — 23 192 34,052 34,267 Total loans $ 13,782 $ — $ 13,782 $ 24,127 $ 4,182,577 $ 4,220,486
Impaired Financing Receivables	The following table presents risk ratings by category of loan as of March 31, 2022 and December 31, 2021: As of March 31, 2022 As of December 31, 2021 Term Loans Amortized Cost Basis by Origination Year Revolving Revolving Loans Total Total 2022 2021 2020 2019 2018 Prior (Dollars in thousands) Commercial and industrial Pass $ 43,735 $ 171,146 $ 67,546 $ 37,224 $ 20,599 $ 13,664 $ 296,900 $ 67 $ 650,881 $ 625,843 Watch 978 10,836 3,197 5,461 2,964 1,872 7,212 — 32,520 33,186 Special Mention 23 1,251 312 475 240 319 880 — 3,500 5,724 Substandard 2,963 12,529 3,710 967 1,276 2,374 3,642 — 27,461 28,705 Doubtful — 88 — — — — — — 88 101 Total commercial and industrial loans $ 47,699 $ 195,850 $ 74,765 $ 44,127 $ 25,079 $ 18,229 $ 308,634 $ 67 $ 714,450 $ 693,559 Paycheck Protection Program (PPP) Pass $ — $ 68,546 $ 10,078 $ — $ — $ — $ — $ — $ 78,624 $ 145,942 Watch — — — — — — — — — — Special Mention — — — — — — — — — — Substandard — — — — — — — — — — Doubtful — — — — — — — — — — Total PPP loans $ — $ 68,546 $ 10,078 $ — $ — $ — $ — $ — $ 78,624 $ 145,942 Commercial real estate (including multi-family residential) Pass $ 243,672 $ 731,797 $ 401,058 $ 191,714 $ 123,931 $ 172,675 $ 43,899 $ — $ 1,908,746 $ 1,813,000 Watch 8,561 33,583 23,859 20,571 9,756 40,846 1,354 — 138,530 132,542 Special Mention 1,964 11,311 3,659 6,405 2,191 8,513 747 — 34,790 44,850 Substandard 19,057 24,419 19,953 16,060 18,071 15,379 2,497 — 115,436 114,229 Doubtful — — — — — — — — — — Total commercial real estate (including multi-family residential) loans $ 273,254 $ 801,110 $ 448,529 $ 234,750 $ 153,949 $ 237,413 $ 48,497 $ — $ 2,197,502 $ 2,104,621 Commercial real estate construction and land development Pass $ 59,849 $ 260,532 $ 67,609 $ 17,628 $ 6,221 $ 6,349 $ 12,004 $ — $ 430,192 $ 412,169 Watch 1,228 1,793 3,550 2,607 1,839 649 1,688 — 13,354 17,717 Special Mention — 4,792 158 1,516 357 816 — — 7,639 7,331 Substandard — 1,512 96 215 465 — — — 2,288 1,908 Doubtful — — — — — — — — — — Total commercial real estate construction and land development $ 61,077 $ 268,629 $ 71,413 $ 21,966 $ 8,882 $ 7,814 $ 13,692 $ — $ 453,473 $ 439,125 1-4 family residential (including home equity) Pass $ 50,699 $ 168,960 $ 129,031 $ 75,939 $ 40,462 $ 55,108 $ 95,267 $ 1,581 $ 617,047 $ 632,428 Watch 1,378 6,411 4,741 1,336 4,892 3,842 5,898 352 28,850 30,365 Special Mention 1,017 534 648 1,101 1,471 668 998 — 6,437 5,471 Substandard 919 1,262 2,417 3,824 1,780 4,899 1,871 — 16,972 16,807 Doubtful — — — — — — — — — — Total 1-4 family residential (including home equity) $ 54,013 $ 177,167 $ 136,837 $ 82,200 $ 48,605 $ 64,517 $ 104,034 $ 1,933 $ 669,306 $ 685,071 As of March 31, 2022 As of December 31, 2021 Term Loans Amortized Cost Basis by Origination Year Revolving Loans Revolving Loans 2022 2021 2020 2019 2018 Prior Total Total (Dollars in thousands) Residential construction Pass $ 22,064 $ 90,796 $ 14,169 $ 1,524 $ 3,186 $ 565 $ — $ — $ 132,304 $ 113,943 Watch 2,181 667 — 902 — — — — 3,750 2,981 Special Mention — — — — — — — — — — Substandard 15 691 — — — — — — 706 977 Doubtful — — — — — — — — — — Total residential construction $ 24,260 $ 92,154 $ 14,169 $ 2,426 $ 3,186 $ 565 $ — $ — $ 136,760 $ 117,901 Consumer and other Pass 5,824 19,452 2,493 1,093 748 307 2,983 — 32,900 33,638 Watch — 112 36 141 — — 33 — 322 381 Special Mention — — — — 15 — — — 15 19 Substandard — 1 — 142 10 — 9 — 162 229 Doubtful — — — — — — — — — — Total consumer and other $ 5,824 $ 19,565 $ 2,529 $ 1,376 $ 773 $ 307 $ 3,025 $ — $ 33,399 $ 34,267 Total loans Pass 425,843 1,511,229 691,984 325,122 195,147 248,668 451,053 1,648 3,850,694 3,776,963 Watch 14,326 53,402 35,383 31,018 19,451 47,209 16,185 352 217,326 217,172 Special Mention 3,004 17,888 4,777 9,497 4,274 10,316 2,625 — 52,381 63,395 Substandard 22,954 40,414 26,176 21,208 21,602 22,652 8,019 — 163,025 162,855 Doubtful — 88 — — — — — — 88 101 Total loans $ 466,127 $ 1,623,021 $ 758,320 $ 386,845 $ 240,474 $ 328,845 $ 477,882 $ 2,000 $ 4,283,514 $ 4,220,486
Allowance for Credit Losses on Financing Receivables	The following table presents the activity in the allowance for credit losses on loans by portfolio type for the three months ended March 31, 2022 and 2021: Commercial and industrial Paycheck Protection Program (PPP) Commercial real estate (including multi-family residential) Commercial real estate construction and land development 1-4 family residential (including home equity) Residential construction Consumer and other Total (Dollars in thousands) Allowance for credit losses on loans: Three Months Ended Balance December 31, 2021 $ 16,629 $ — $ 23,143 $ 6,263 $ 847 $ 975 $ 83 $ 47,940 Provision for credit losses on loans (383) — 1,989 (53) (95) 118 16 1,592 Charge-offs (341) — (255) (63) — — (48) (707) Recoveries 390 — — — — — — 390 Net charge-offs 49 — (255) (63) — — (48) (317) Balance March 31, 2022 $ 16,295 $ — $ 24,877 $ 6,147 $ 752 $ 1,093 $ 51 $ 49,215 Three Months Ended Balance December 31, 2020 $ 17,738 $ — $ 23,934 $ 6,939 $ 3,279 $ 870 $ 413 $ 53,173 Provision for credit losses on loans 1,304 — (155) 683 (1,723) (45) (134) (70) Charge-offs (404) — — — — — — (404) Recoveries 59 — — — — — — 59 Net charge-offs (345) — — — — — — (345) Balance March 31, 2021 $ 18,697 $ — $ 23,779 $ 7,622 $ 1,556 $ 825 $ 279 $ 52,758
Summary of Amortized Cost Basis of Collateral Dependent Loans Individually Evaluated to Determine Expected Credit Losses	The following table presents the amortized cost basis of collateral dependent loans, which are individually evaluated to determine expected credit losses as of March 31, 2022 and December 31, 2021: As of March 31, 2022 Real Estate Business Assets Other Total (Dollars in thousands) Commercial and industrial $ — $ 4,952 $ — $ 4,952 Paycheck Protection Program (PPP) — — — — Real estate: Commercial real estate (including multi-family residential) 5,080 — — 5,080 Commercial real estate construction and land development — — — — 1-4 family residential (including home equity) 4,498 — — 4,498 Residential construction — — — — Consumer and other — — — — Total $ 9,578 $ 4,952 $ — $ 14,530 As of December 31, 2021 Real Estate Business Assets Other Total (Dollars in thousands) Commercial and industrial $ — $ 6,168 $ — $ 6,168 Paycheck Protection Program (PPP) — — — — Real estate: Commercial real estate (including multi-family residential) 5,494 — — 5,494 Commercial real estate construction and land development 63 — — 63 1-4 family residential (including home equity) 4,685 — — 4,685 Residential construction — — — — Consumer and other — — 158 158 Total $ 10,242 $ 6,168 $ 158 $ 16,568
Summary of Nonaccrual Loans	The following table presents additional information regarding nonaccrual loans. No interest income was recognized on nonaccrual loans as of March 31, 2022 and December 31, 2021. As of March 31, 2022 Nonaccrual Loans with No Related Allowance Nonaccrual Loans with Related Allowance Total Nonaccrual Loans (Dollars in thousands) Commercial and industrial $ 3,787 $ 4,022 $ 7,809 Paycheck Protection Program (PPP) — — — Real estate: Commercial real estate (including multi-family residential) 12,540 2,719 15,259 Commercial real estate construction and land development — — — 1-4 family residential (including home equity) 2,046 1,019 3,065 Residential construction — — — Consumer and other 142 — 142 Total loans $ 18,515 $ 7,760 $ 26,275 As of December 31, 2021 Nonaccrual Loans with No Related Allowance Nonaccrual Loans with Related Allowance Total Nonaccrual Loans (Dollars in thousands) Commercial and industrial $ 1,824 $ 6,534 $ 8,358 Paycheck Protection Program (PPP) — — — Real estate: Commercial real estate (including multi-family residential) 9,018 3,621 12,639 Commercial real estate construction and land development 63 — 63 1-4 family residential (including home equity) 2,324 551 2,875 Residential construction — — — Consumer and other 158 34 192 Total loans $ 13,387 $ 10,740 $ 24,127
Troubled Debt Restructurings on Financing Receivables	The following table presents information regarding loans modified in a troubled debt restructuring during the three months ended March 31, 2022 and 2021: Three Months Ended March 31, 2022 2021 Number of Contracts Pre-Modification of Outstanding Recorded Investment Post Modification of Outstanding Recorded Investment Number of Contracts Pre-Modification of Outstanding Recorded Investment Post Modification of Outstanding Recorded Investment (Dollars in thousands) Troubled Debt Restructurings Commercial and industrial — $ — $ — — $ — $ — Paycheck Protection Program (PPP) — — — — — — Real estate: Commercial real estate (including multi-family residential) 4 1,207 1,207 1 545 545 Commercial real estate construction and land development — — — — — — 1-4 family residential (including home equity) — — — — — — Residential construction — — — — — — Consumer and other — — — — — — Total 4 $ 1,207 $ 1,207 1 $ 545 $ 545

LEASES (Tables)

LEASES (Tables)	3 Months Ended
	Mar. 31, 2022
Leases [Abstract]
Supplemental Lease Information	Supplemental lease information at the dates indicated is as follows: March 31, 2022 December 31, 2021 (Dollars in thousands) Balance Sheet: Operating lease right of use asset classified as premises and equipment $ 9,505 $ 10,196 Operating lease liability classified as other liabilities $ 9,656 $ 10,370 Weighted average lease term, in years 4.88 4.97 Weighted average discount rate 2.61 % 2.62 %
Summary of Lease Costs	Lease costs for the dates indicated is as follows: Three Months Ended March 31, 2022 2021 (Dollars in thousands) Income Statement: Operating lease cost $ 892 $ 873 Short-term lease cost — 15 Sublease income — (18) Total operating lease costs $ 892 $ 870
Maturity Analysis of Lease Liabilities	A maturity analysis of the Company’s lease liabilities is as follows: March 31, 2022 December 31, 2021 (Dollars in thousands) Lease payments due: Within one year $ 2,137 $ 2,951 After one but within two years 2,362 2,350 After two but within three years 1,904 1,892 After three but within four years 1,378 1,366 After four but within five years 907 894 After five years 1,586 1,594 Total lease payments 10,274 11,047 Less: discount on cash flows 618 677 Total lease liability $ 9,656 $ 10,370

FAIR VALUE (Tables)

FAIR VALUE (Tables)	3 Months Ended
	Mar. 31, 2022
Fair Value Disclosures [Abstract]
Fair Value, by Balance Sheet Grouping	The carrying amounts and estimated fair values of financial instruments that are reported on the balance sheet are as follows: As of March 31, 2022 Estimated Fair Value Carrying Level 1 Level 2 Level 3 Total (Dollars in thousands) Financial assets Cash and cash equivalents $ 699,384 $ 699,384 $ — $ — $ 699,384 Available for sale securities 1,790,707 — 1,790,707 — 1,790,707 Loans held for investment, net of allowance 4,234,299 — — 4,205,514 4,205,514 Accrued interest receivable 31,505 44 7,409 24,052 31,505 Financial liabilities Deposits $ 6,162,327 $ — $ 6,150,816 $ — $ 6,150,816 Accrued interest payable 3,086 — 3,086 — 3,086 Borrowed funds 89,959 — 89,969 — 89,969 Subordinated debt 108,978 — 113,458 — 113,458 As of December 31, 2021 Estimated Fair Value Carrying Level 1 Level 2 Level 3 Total (Dollars in thousands) Financial assets Cash and cash equivalents $ 757,509 $ 757,509 $ — $ — $ 757,509 Available for sale securities 1,773,765 — 1,773,765 — 1,773,765 Loans held for investment, net of allowance 4,172,546 — — 4,143,552 4,143,552 Accrued interest receivable 33,392 6 7,435 25,953 33,394 Financial liabilities Deposits $ 6,047,639 $ — $ 6,046,050 $ — $ 6,046,050 Accrued interest payable 1,753 — 1,753 — 1,753 Borrowed funds 89,956 — 73,699 — 73,699 Subordinated debt 108,847 — 113,355 — 113,355
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following tables present fair values for assets and liabilities measured at fair value on a recurring basis. There were no liabilities measured at fair value on a recurring basis as of March 31, 2022. March 31, 2022 Level 1 Level 2 Level 3 Total (Dollars in thousands) Financial assets Available for sale securities: U.S. government and agency securities $ — $ 413,095 $ — $ 413,095 Municipal securities — 459,703 — 459,703 Agency mortgage-backed pass-through securities — 300,866 — 300,866 Agency collateralized mortgage obligations — 484,118 — 484,118 Corporate bonds and other — 132,925 — 132,925 Total available for sale securities $ — $ 1,790,707 $ — $ 1,790,707 December 31, 2021 Level 1 Level 2 Level 3 Total (Dollars in thousands) Financial assets Available for sale securities: U.S. government and agency securities $ — $ 400,551 $ — $ 400,551 Municipal securities — 497,100 — 497,100 Agency mortgage-backed pass-through securities — 302,596 — 302,596 Agency collateralized mortgage obligations — 441,056 — 441,056 Corporate bonds and other — 132,462 — 132,462 Total available for sale securities $ — $ 1,773,765 $ — $ 1,773,765
Fair Value Measurements, Nonrecurring	Assets measured at fair value on a nonrecurring basis are summarized in the table below. There were no liabilities measured at fair value on a nonrecurring basis at March 31, 2022 and December 31, 2021. As of March 31, 2022 Level 1 Level 2 Level 3 (Dollars in thousands) Loans: Commercial and industrial $ — $ — $ 7,073 Commercial real estate (including multi- family residential) — — 54,569 Commercial real estate construction and land development — — 192 1-4 family residential (including home equity) — — 2,322 Residential construction — — 538 Branch assets held for sale — — 3,598 $ — $ — $ 68,292 As of December 31, 2021 Level 1 Level 2 Level 3 (Dollars in thousands) Loans: Commercial and industrial $ — $ — $ 6,960 Commercial real estate (including multi- family residential) — — 34,627 Commercial real estate construction and land development — — 72 1-4 family residential (including home equity) — — 2,806 Residential construction — — 500 Branch assets held for sale 2,925 — — $ 2,925 $ — $ 44,965

DEPOSITS (Tables)

DEPOSITS (Tables)	3 Months Ended
	Mar. 31, 2022
Deposit Liabilities [Abstract]
Schedule of Maturities of Time Deposits	Scheduled maturities of time deposits for the next five years are as follows (dollars in thousands): Within one year $ 951,588 After one but within two years 121,161 After two but within three years 48,699 After three but within four years 27,255 After four but within five years 36,312 Total $ 1,185,015

DERIVATIVE INSTRUMENTS (Tables)

DERIVATIVE INSTRUMENTS (Tables)	3 Months Ended
	Mar. 31, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Effect of Cash Flow Hedge Relationship on Statement of Comprehensive Income	The effects of the Company’s cash flow hedge relationship on the statement of comprehensive income during the three months ended March 31, 2022 and 2021 were as follows, before tax: Amount of Gain Recognized in Other Comprehensive Loss Three Months Ended March 31, 2022 2021 (Dollars in thousands) Liability derivatives Interest rate swaps $ — $ 1,824

SUBORDINATED DEBT (Tables)

SUBORDINATED DEBT (Tables)	3 Months Ended
	Mar. 31, 2022
Subordinated Borrowings [Abstract]
Schedule of Subordinated Borrowing	A summary of pertinent information related to the Company’s issues of junior subordinated debentures outstanding at March 31, 2022 is set forth in the table below: Description Issuance Date Trust Preferred Securities Outstanding Interest Rate (1) Junior Subordinated Debt Owed to Trusts Maturity Date (2) (Dollars in thousands) Farmers & Merchants Capital Trust II November 13, 2003 $ 7,500 3 month LIBOR + 3.00% $ 7,732 November 8, 2033 Farmers & Merchants Capital Trust III June 30, 2005 3,500 3 month LIBOR + 1.80% 3,609 July 7, 2035 $ 11,341 (1) The 3-month LIBOR in effect as of March 31, 2022 was 0.83971%. (2) All debentures are currently callable.

STOCK BASED COMPENSATION (Table

STOCK BASED COMPENSATION (Tables)	3 Months Ended
	Mar. 31, 2022
Share-based Payment Arrangement [Abstract]
Schedule of Share-based Compensation, Stock Options, Activity	A summary of the activity in the stock option plans during the three months ended March 31, 2022 is set forth below: Number of Weighted Weighted Aggregate (Shares in thousands) (In years) (Dollars in thousands) Options outstanding, January 1, 2022 283 $ 22.74 2.90 $ 5,508 Options granted — — Options exercised (33) 20.21 Options forfeited (6) 31.73 Options outstanding, March 31, 2022 244 $ 22.86 2.71 $ 5,330 Options vested and exercisable, March 31, 2022 244 $ 22.86 2.71 $ 5,330
Schedule of Share-based Compensation, Restricted Stock Units Award Activity	A summary of the activity of the nonvested shares of restricted stock during the three months ended March 31, 2022 is as follows: Number of Weighted (Shares in thousands) Nonvested share awards outstanding, January 1, 2022 168 $ 34.23 Share awards granted 2 42.21 Share awards vested (17) 38.46 Unvested share awards forfeited or cancelled (1) 34.63 Nonvested share awards outstanding, March 31, 2022 152 $ 33.86

OFF-BALANCE SHEET ARRANGEMENT_2

OFF-BALANCE SHEET ARRANGEMENTS, COMMITMENTS AND CONTINGENCIES (Tables)	3 Months Ended
	Mar. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Schedule of Fair Value, Off-balance Sheet Risks	The contractual amounts of financial instruments with off-balance sheet risk are as follows: March 31, 2022 December 31, 2021 Fixed Variable Fixed Variable (Dollars in thousands) Commitments to extend credit $ 534,330 $ 632,875 $ 484,441 $ 607,106 Standby letters of credit 7,992 13,718 8,536 12,624 Total $ 542,322 $ 646,593 $ 492,977 $ 619,730
Summary of Activity in Allowance for Credit Losses on Unfunded Commitments	The following table details activity in the allowance for credit losses on unfunded commitments (dollars in thousands): Balance at December 31, 2021 $ 5,298 Provision for credit losses on unfunded commitments 222 Balance at March 31, 2022 $ 5,520 Balance at December 31, 2020 $ 4,697 Provision for credit losses on unfunded commitments 709 Balance at March 31, 2021 $ 5,406

REGULATORY CAPITAL MATTERS (Tab

REGULATORY CAPITAL MATTERS (Tables)	3 Months Ended
	Mar. 31, 2022
Regulatory Capital Matters [Abstract]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations	The following is a summary of the Company’s and the Bank’s actual and required capital ratios as of March 31, 2022 and December 31, 2021: Actual Minimum Required for Capital Adequacy Purposes Minimum Required Plus Capital Conservation Buffer To Be Categorized As Well-Capitalized Under Amount Ratio Amount Ratio Amount Ratio Amount Ratio (Dollars in thousands) ALLEGIANCE BANCSHARES, INC. (Consolidated) As of March 31, 2022 Total Capital (to risk weighted assets) $ 741,722 15.76 % $ 376,611 8.00 % $ 494,302 10.50 % N/A N/A Common Equity Tier 1 Capital (to risk weighted assets) 578,009 12.28 % 211,844 4.50 % 329,535 7.00 % N/A N/A Tier 1 Capital (to risk weighted assets) 587,790 12.49 % 282,458 6.00 % 400,149 8.50 % N/A N/A Tier 1 Capital (to average tangible assets) 587,790 8.37 % 280,972 4.00 % 280,972 4.00 % N/A N/A As of December 31, 2021 Total Capital (to risk weighted assets) $ 722,010 16.08 % $ 359,214 8.00 % $ 471,468 10.50 % N/A N/A Common Equity Tier 1 Capital (to risk weighted assets) 559,926 12.47 % 202,058 4.50 % 314,312 7.00 % N/A N/A Tier 1 Capital (to risk weighted assets) 569,678 12.69 % 269,410 6.00 % 381,665 8.50 % N/A N/A Tier 1 Capital (to average tangible assets) 569,678 8.53 % 267,286 4.00 % 267,286 4.00 % N/A N/A ALLEGIANCE BANK As of March 31, 2022 Total Capital (to risk weighted assets) $ 681,690 14.50 % $ 376,164 8.00 % $ 493,715 10.50 % $ 470,205 10.00 % Common Equity Tier 1 Capital (to risk weighted assets) 587,047 12.48 % 211,592 4.50 % 329,144 7.00 % 305,633 6.50 % Tier 1 Capital (to risk weighted assets) 587,047 12.48 % 282,123 6.00 % 399,674 8.50 % 376,164 8.00 % Tier 1 Capital (to average tangible assets) 587,047 8.37 % 280,607 4.00 % 280,607 4.00 % 350,758 5.00 % As of December 31, 2021 Total Capital (to risk weighted assets) $ 659,596 14.71 % $ 358,793 8.00 % $ 470,916 10.50 % $ 448,491 10.00 % Common Equity Tier 1 Capital (to risk weighted assets) 566,483 12.63 % 201,821 4.50 % 313,944 7.00 % 291,519 6.50 % Tier 1 Capital (to risk weighted assets) 566,483 12.63 % 269,095 6.00 % 381,217 8.50 % 358,793 8.00 % Tier 1 Capital (to average tangible assets) 566,483 8.49 % 266,944 4.00 % 266,944 4.00 % 333,680 5.00 %

EARNINGS PER COMMON SHARE (Tabl

EARNINGS PER COMMON SHARE (Tables)	3 Months Ended
	Mar. 31, 2022
Earnings Per Share [Abstract]
Schedule of Earnings Per Share, Basic and Diluted	Three Months Ended March 31, 2022 2021 Amount Per Share Amount Per Share (Amounts in thousands, except per share data) Net income attributable to shareholders $ 18,657 $ 18,010 Basic: Weighted average shares outstanding 20,363 $ 0.92 20,140 $ 0.89 Diluted: Add incremental shares for: Dilutive effect of stock option exercises and performance share units 163 202 Total 20,526 $ 0.91 20,342 $ 0.89

NATURE OF OPERATIONS AND SUMM_3

NATURE OF OPERATIONS AND SUMMARY OF SIGNIFICANT ACCOUNTING AND REPORTING POLICIES (Details) $ in Thousands	Nov. 08, 2021USD ($)shares	Mar. 31, 2022USD ($)office	Dec. 31, 2021USD ($)
New Accounting Pronouncement Early Adoption [Line Items]
Number of offices in which entity operates		27
Number of banks in which entity operates		26
Assets | $		$ 7,149,363	$ 7,104,954
Merger, shares consideration received | shares	1.4184
CBTX Shareholders
New Accounting Pronouncement Early Adoption [Line Items]
Assets | $	$ 4,490,000
Merger, percent of shares ownership	46.00%
Allegiance Shareholders
New Accounting Pronouncement Early Adoption [Line Items]
Merger, percent of shares ownership	54.00%
Beaumont
New Accounting Pronouncement Early Adoption [Line Items]
Number of offices in which entity operates		1

GOODWILL AND CORE DEPOSIT INT_3

GOODWILL AND CORE DEPOSIT INTANGIBLE ASSETS - Changes in Carrying Amount of Goodwill and Intangibles (Details) - USD ($) $ in Thousands	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Goodwill
Balance, beginning	$ 223,642	$ 223,642	$ 223,642
Balance, ending	223,642		223,642
Core Deposit Intangibles
Balance, beginning	14,658
Amortization	(751)	(824)
Balance, ending	13,907		14,658
Core Deposit Intangibles
Core Deposit Intangibles
Balance, beginning	14,658	$ 17,954	17,954
Amortization	(751)		(3,296)
Balance, ending	$ 13,907		$ 14,658

GOODWILL AND CORE DEPOSIT INT_4

GOODWILL AND CORE DEPOSIT INTANGIBLE ASSETS - Narrative (Details)	3 Months Ended
	Mar. 31, 2022USD ($)
Goodwill and Intangible Assets Disclosure [Abstract]
Goodwill and other intangible assets impairment	$ 0

GOODWILL AND CORE DEPOSIT INT_5

GOODWILL AND CORE DEPOSIT INTANGIBLE ASSETS - Estimated Aggregate Future Amortization Expense for Core Deposit Intangibles (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Goodwill and Intangible Assets Disclosure [Abstract]
Remaining 2022	$ 2,252
2023	2,323
2024	2,188
2025	2,061
2026	1,941
Thereafter	3,142
Total	$ 13,907	$ 14,658

SECURITIES - Amortized Cost and

SECURITIES - Amortized Cost and Fair Value of Investment Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 1,871,226	$ 1,750,663
Gross Unrealized Gains	9,089	37,920
Gross Unrealized Losses	(89,608)	(14,818)
Fair Value	1,790,707	1,773,765
U.S. government and agency securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	424,171	401,811
Gross Unrealized Gains	300	414
Gross Unrealized Losses	(11,376)	(1,674)
Fair Value	413,095	400,551
Municipal securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	470,404	468,164
Gross Unrealized Gains	7,449	30,483
Gross Unrealized Losses	(18,150)	(1,547)
Fair Value	459,703	497,100
Agency mortgage-backed pass-through securities
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	322,883	307,097
Gross Unrealized Gains	102	2,075
Gross Unrealized Losses	(22,119)	(6,576)
Fair Value	300,866	302,596
Agency collateralized mortgage obligations
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	518,067	443,277
Gross Unrealized Gains	81	2,026
Gross Unrealized Losses	(34,030)	(4,247)
Fair Value	484,118	441,056
Corporate bonds and other
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	135,701	130,314
Gross Unrealized Gains	1,157	2,922
Gross Unrealized Losses	(3,933)	(774)
Fair Value	$ 132,925	$ 132,462

SECURITIES - Amortized Cost a_2

SECURITIES - Amortized Cost and Fair Value of Investment Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Amortized Cost
Due in one year or less	$ 5,817
Due after one year through five years	261,665
Due after five years through ten years	158,863
Due after ten years	603,931
Subtotal	1,030,276
Agency mortgage-backed pass-through securities and collateralized mortgage obligations	840,950
Amortized Cost	1,871,226	$ 1,750,663
Fair Value
Due in one year or less	5,867
Due after one year through five years	251,280
Due after five years through ten years	157,109
Due after ten years	591,467
Subtotal	1,005,723
Agency mortgage-backed pass-through securities and collateralized mortgage obligations	784,984
Fair Value	$ 1,790,707	$ 1,773,765

SECURITIES - Securities in a Co

SECURITIES - Securities in a Continuous Unrealized Loss Position (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Debt Securities, Available-for-sale [Line Items]
Securities in a Continuous Unrealized Loss Position, Less than 12 months, Estimated Fair Value	$ 1,366,984	$ 996,300
Securities in a Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(82,137)	(13,302)
Securities in a Continuous Unrealized Loss Position, More than 12 Months, Estimated Fair Value	65,502	45,882
Securities in a Continuous Unrealized Loss Position, More than 12 Months Unrealized Losses	(7,471)	(1,516)
Securities in a Continuous Unrealized Loss Position, Total Estimated Fair Value	1,432,486	1,042,182
Securities in a Continuous Unrealized Loss Position, Total Unrealized Losses	(89,608)	(14,818)
U.S. government and agency securities
Debt Securities, Available-for-sale [Line Items]
Securities in a Continuous Unrealized Loss Position, Less than 12 months, Estimated Fair Value	360,995	340,161
Securities in a Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(11,376)	(1,674)
Securities in a Continuous Unrealized Loss Position, More than 12 Months, Estimated Fair Value	0	0
Securities in a Continuous Unrealized Loss Position, More than 12 Months Unrealized Losses	0	0
Securities in a Continuous Unrealized Loss Position, Total Estimated Fair Value	360,995	340,161
Securities in a Continuous Unrealized Loss Position, Total Unrealized Losses	(11,376)	(1,674)
Municipal securities
Debt Securities, Available-for-sale [Line Items]
Securities in a Continuous Unrealized Loss Position, Less than 12 months, Estimated Fair Value	223,001	70,019
Securities in a Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(15,908)	(1,185)
Securities in a Continuous Unrealized Loss Position, More than 12 Months, Estimated Fair Value	14,746	10,435
Securities in a Continuous Unrealized Loss Position, More than 12 Months Unrealized Losses	(2,242)	(362)
Securities in a Continuous Unrealized Loss Position, Total Estimated Fair Value	237,747	80,454
Securities in a Continuous Unrealized Loss Position, Total Unrealized Losses	(18,150)	(1,547)
Agency mortgage-backed pass-through securities
Debt Securities, Available-for-sale [Line Items]
Securities in a Continuous Unrealized Loss Position, Less than 12 months, Estimated Fair Value	248,653	219,610
Securities in a Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(17,462)	(5,675)
Securities in a Continuous Unrealized Loss Position, More than 12 Months, Estimated Fair Value	38,031	21,627
Securities in a Continuous Unrealized Loss Position, More than 12 Months Unrealized Losses	(4,657)	(901)
Securities in a Continuous Unrealized Loss Position, Total Estimated Fair Value	286,684	241,237
Securities in a Continuous Unrealized Loss Position, Total Unrealized Losses	(22,119)	(6,576)
Agency collateralized mortgage obligations
Debt Securities, Available-for-sale [Line Items]
Securities in a Continuous Unrealized Loss Position, Less than 12 months, Estimated Fair Value	462,888	328,300
Securities in a Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(33,458)	(3,994)
Securities in a Continuous Unrealized Loss Position, More than 12 Months, Estimated Fair Value	12,725	13,820
Securities in a Continuous Unrealized Loss Position, More than 12 Months Unrealized Losses	(572)	(253)
Securities in a Continuous Unrealized Loss Position, Total Estimated Fair Value	475,613	342,120
Securities in a Continuous Unrealized Loss Position, Total Unrealized Losses	(34,030)	(4,247)
Corporate bonds and other
Debt Securities, Available-for-sale [Line Items]
Securities in a Continuous Unrealized Loss Position, Less than 12 months, Estimated Fair Value	71,447	38,210
Securities in a Continuous Unrealized Loss Position, Less than 12 Months, Unrealized Losses	(3,933)	(774)
Securities in a Continuous Unrealized Loss Position, More than 12 Months, Estimated Fair Value	0	0
Securities in a Continuous Unrealized Loss Position, More than 12 Months Unrealized Losses	0	0
Securities in a Continuous Unrealized Loss Position, Total Estimated Fair Value	71,447	38,210
Securities in a Continuous Unrealized Loss Position, Total Unrealized Losses	$ (3,933)	$ (774)

SECURITIES - Narrative (Details

SECURITIES - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Allowance for credit losses for available for sale securities	$ 0
Proceeds from sales of available for sale securities	0	$ 4,900,000
Realized gains		$ 49,000
Security owned and pledged as collateral	$ 460,700,000		$ 258,800,000

LOANS AND ALLOWANCE FOR CREDI_3

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Loan Portfolio (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Dec. 31, 2020
Accounts Notes And Loans Receivable [Line Items]
Loans held for investment	$ 4,283,514	$ 4,220,486
Allowance for credit losses on loans	(49,215)	(47,940)	$ (52,758)	$ (53,173)
Loans, net	4,234,299	4,172,546
Commercial and industrial
Accounts Notes And Loans Receivable [Line Items]
Loans held for investment	714,450	693,559
Allowance for credit losses on loans	(16,295)	(16,629)	(18,697)	(17,738)
Paycheck Protection Program (PPP)
Accounts Notes And Loans Receivable [Line Items]
Loans held for investment	78,624	145,942
Allowance for credit losses on loans	0	0	0	0
Real estate: | Commercial real estate (including multi-family residential)
Accounts Notes And Loans Receivable [Line Items]
Loans held for investment	2,197,502	2,104,621
Allowance for credit losses on loans	(24,877)	(23,143)	(23,779)	(23,934)
Real estate: | Commercial real estate construction and land development
Accounts Notes And Loans Receivable [Line Items]
Loans held for investment	453,473	439,125
Allowance for credit losses on loans	(6,147)	(6,263)	(7,622)	(6,939)
Real estate: | 1-4 family residential (including home equity)
Accounts Notes And Loans Receivable [Line Items]
Loans held for investment	669,306	685,071
Allowance for credit losses on loans	(752)	(847)	(1,556)	(3,279)
Real estate: | Residential construction
Accounts Notes And Loans Receivable [Line Items]
Loans held for investment	136,760	117,901
Allowance for credit losses on loans	(1,093)	(975)	(825)	(870)
Consumer and other
Accounts Notes And Loans Receivable [Line Items]
Loans held for investment	33,399	34,267
Allowance for credit losses on loans	$ (51)	$ (83)	$ (279)	$ (413)

LOANS AND ALLOWANCE FOR CREDI_4

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Narrative (Details)	3 Months Ended
	Mar. 31, 2022USD ($)contractLoan	Mar. 31, 2021USD ($)contract	Dec. 31, 2021USD ($)
Accounts Notes And Loans Receivable [Line Items]
Accrued interest receivable	$ 24,100,000		$ 26,000,000
Recorded investment	18,800,000		19,200,000
Financing receivable, troubled debt restructuring, allowance for credit loss	984,000		$ 1,900,000
Troubled debt restructuring, write-down	$ 0	$ 0
Number of defaults on loan that were modified as troubled debt restructuring during the preceding 12 months | contract	0	1
Troubled debt restructuring, addition		$ 174,000
Modification of outstanding recorded investment	$ 1,207,000	545,000
COVID-19
Accounts Notes And Loans Receivable [Line Items]
Number of loans deferral due to CARES Act | Loan	7
Outstanding loan balances deferrals due to CARES Act	$ 3,400,000
Troubled debt restructurings added in reporting period
Accounts Notes And Loans Receivable [Line Items]
Recorded investment	$ 1,200,000	$ 545,000

LOANS AND ALLOWANCE FOR CREDI_5

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Aging Analysis of the Recorded Investment in Past Due Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Accounts Notes And Loans Receivable [Line Items]
Loans	$ 4,283,514	$ 4,220,486
Nonaccrual Loans	26,275	24,127
30-89 Days
Accounts Notes And Loans Receivable [Line Items]
Loans	18,149	13,782
90 or More Days
Accounts Notes And Loans Receivable [Line Items]
Loans	0	0
Total Past Due Loans
Accounts Notes And Loans Receivable [Line Items]
Loans	18,149	13,782
Current Loans
Accounts Notes And Loans Receivable [Line Items]
Loans	4,239,090	4,182,577
Commercial and industrial
Accounts Notes And Loans Receivable [Line Items]
Loans	714,450	693,559
Nonaccrual Loans	7,809	8,358
Commercial and industrial | 30-89 Days
Accounts Notes And Loans Receivable [Line Items]
Loans	3,149	1,786
Commercial and industrial | 90 or More Days
Accounts Notes And Loans Receivable [Line Items]
Loans	0	0
Commercial and industrial | Total Past Due Loans
Accounts Notes And Loans Receivable [Line Items]
Loans	3,149	1,786
Commercial and industrial | Current Loans
Accounts Notes And Loans Receivable [Line Items]
Loans	703,492	683,415
Paycheck Protection Program (PPP)
Accounts Notes And Loans Receivable [Line Items]
Loans	78,624	145,942
Nonaccrual Loans	0	0
Paycheck Protection Program (PPP) | 30-89 Days
Accounts Notes And Loans Receivable [Line Items]
Loans	0	0
Paycheck Protection Program (PPP) | 90 or More Days
Accounts Notes And Loans Receivable [Line Items]
Loans	0	0
Paycheck Protection Program (PPP) | Total Past Due Loans
Accounts Notes And Loans Receivable [Line Items]
Loans	0	0
Paycheck Protection Program (PPP) | Current Loans
Accounts Notes And Loans Receivable [Line Items]
Loans	78,624	145,942
Real estate: | Commercial real estate (including multi-family residential)
Accounts Notes And Loans Receivable [Line Items]
Loans	2,197,502	2,104,621
Nonaccrual Loans	15,259	12,639
Real estate: | Commercial real estate (including multi-family residential) | 30-89 Days
Accounts Notes And Loans Receivable [Line Items]
Loans	8,391	7,689
Real estate: | Commercial real estate (including multi-family residential) | 90 or More Days
Accounts Notes And Loans Receivable [Line Items]
Loans	0	0
Real estate: | Commercial real estate (including multi-family residential) | Total Past Due Loans
Accounts Notes And Loans Receivable [Line Items]
Loans	8,391	7,689
Real estate: | Commercial real estate (including multi-family residential) | Current Loans
Accounts Notes And Loans Receivable [Line Items]
Loans	2,173,852	2,084,293
Real estate: | Commercial real estate construction and land development
Accounts Notes And Loans Receivable [Line Items]
Loans	453,473	439,125
Nonaccrual Loans	0	63
Real estate: | Commercial real estate construction and land development | 30-89 Days
Accounts Notes And Loans Receivable [Line Items]
Loans	2,611	619
Real estate: | Commercial real estate construction and land development | 90 or More Days
Accounts Notes And Loans Receivable [Line Items]
Loans	0	0
Real estate: | Commercial real estate construction and land development | Total Past Due Loans
Accounts Notes And Loans Receivable [Line Items]
Loans	2,611	619
Real estate: | Commercial real estate construction and land development | Current Loans
Accounts Notes And Loans Receivable [Line Items]
Loans	450,862	438,443
Real estate: | 1-4 family residential (including home equity)
Accounts Notes And Loans Receivable [Line Items]
Loans	669,306	685,071
Nonaccrual Loans	3,065	2,875
Real estate: | 1-4 family residential (including home equity) | 30-89 Days
Accounts Notes And Loans Receivable [Line Items]
Loans	1,539	2,422
Real estate: | 1-4 family residential (including home equity) | 90 or More Days
Accounts Notes And Loans Receivable [Line Items]
Loans	0	0
Real estate: | 1-4 family residential (including home equity) | Total Past Due Loans
Accounts Notes And Loans Receivable [Line Items]
Loans	1,539	2,422
Real estate: | 1-4 family residential (including home equity) | Current Loans
Accounts Notes And Loans Receivable [Line Items]
Loans	664,702	679,774
Real estate: | Residential construction
Accounts Notes And Loans Receivable [Line Items]
Loans	136,760	117,901
Nonaccrual Loans	0	0
Real estate: | Residential construction | 30-89 Days
Accounts Notes And Loans Receivable [Line Items]
Loans	2,431	1,243
Real estate: | Residential construction | 90 or More Days
Accounts Notes And Loans Receivable [Line Items]
Loans	0	0
Real estate: | Residential construction | Total Past Due Loans
Accounts Notes And Loans Receivable [Line Items]
Loans	2,431	1,243
Real estate: | Residential construction | Current Loans
Accounts Notes And Loans Receivable [Line Items]
Loans	134,329	116,658
Consumer and other
Accounts Notes And Loans Receivable [Line Items]
Loans	33,399	34,267
Nonaccrual Loans	142	192
Consumer and other | 30-89 Days
Accounts Notes And Loans Receivable [Line Items]
Loans	28	23
Consumer and other | 90 or More Days
Accounts Notes And Loans Receivable [Line Items]
Loans	0	0
Consumer and other | Total Past Due Loans
Accounts Notes And Loans Receivable [Line Items]
Loans	28	23
Consumer and other | Current Loans
Accounts Notes And Loans Receivable [Line Items]
Loans	$ 33,229	$ 34,052

LOANS AND ALLOWANCE FOR CREDI_6

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Risk Ratings by Category of Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	$ 466,127
Term Loans Amortized Cost Basis by Origination Year, 2021	1,623,021
Term Loans Amortized Cost Basis by Origination Year, 2020	758,320
Term Loans Amortized Cost Basis by Origination Year, 2019	386,845
Term Loans Amortized Cost Basis by Origination Year, 2018	240,474
Term Loans Amortized Cost Basis by Origination Year, prior	328,845
Revolving Loans	477,882
Revolving Loans Converted to Term Loans	2,000
Total loans	4,283,514	$ 4,220,486
Pass
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	425,843
Term Loans Amortized Cost Basis by Origination Year, 2021	1,511,229
Term Loans Amortized Cost Basis by Origination Year, 2020	691,984
Term Loans Amortized Cost Basis by Origination Year, 2019	325,122
Term Loans Amortized Cost Basis by Origination Year, 2018	195,147
Term Loans Amortized Cost Basis by Origination Year, prior	248,668
Revolving Loans	451,053
Revolving Loans Converted to Term Loans	1,648
Total loans	3,850,694	3,776,963
Watch
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	14,326
Term Loans Amortized Cost Basis by Origination Year, 2021	53,402
Term Loans Amortized Cost Basis by Origination Year, 2020	35,383
Term Loans Amortized Cost Basis by Origination Year, 2019	31,018
Term Loans Amortized Cost Basis by Origination Year, 2018	19,451
Term Loans Amortized Cost Basis by Origination Year, prior	47,209
Revolving Loans	16,185
Revolving Loans Converted to Term Loans	352
Total loans	217,326	217,172
Special Mention
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	3,004
Term Loans Amortized Cost Basis by Origination Year, 2021	17,888
Term Loans Amortized Cost Basis by Origination Year, 2020	4,777
Term Loans Amortized Cost Basis by Origination Year, 2019	9,497
Term Loans Amortized Cost Basis by Origination Year, 2018	4,274
Term Loans Amortized Cost Basis by Origination Year, prior	10,316
Revolving Loans	2,625
Revolving Loans Converted to Term Loans	0
Total loans	52,381	63,395
Substandard
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	22,954
Term Loans Amortized Cost Basis by Origination Year, 2021	40,414
Term Loans Amortized Cost Basis by Origination Year, 2020	26,176
Term Loans Amortized Cost Basis by Origination Year, 2019	21,208
Term Loans Amortized Cost Basis by Origination Year, 2018	21,602
Term Loans Amortized Cost Basis by Origination Year, prior	22,652
Revolving Loans	8,019
Revolving Loans Converted to Term Loans	0
Total loans	163,025	162,855
Doubtful
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	0
Term Loans Amortized Cost Basis by Origination Year, 2021	88
Term Loans Amortized Cost Basis by Origination Year, 2020	0
Term Loans Amortized Cost Basis by Origination Year, 2019	0
Term Loans Amortized Cost Basis by Origination Year, 2018	0
Term Loans Amortized Cost Basis by Origination Year, prior	0
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total loans	88	101
Commercial and industrial
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	47,699
Term Loans Amortized Cost Basis by Origination Year, 2021	195,850
Term Loans Amortized Cost Basis by Origination Year, 2020	74,765
Term Loans Amortized Cost Basis by Origination Year, 2019	44,127
Term Loans Amortized Cost Basis by Origination Year, 2018	25,079
Term Loans Amortized Cost Basis by Origination Year, prior	18,229
Revolving Loans	308,634
Revolving Loans Converted to Term Loans	67
Total loans	714,450	693,559
Commercial and industrial | Pass
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	43,735
Term Loans Amortized Cost Basis by Origination Year, 2021	171,146
Term Loans Amortized Cost Basis by Origination Year, 2020	67,546
Term Loans Amortized Cost Basis by Origination Year, 2019	37,224
Term Loans Amortized Cost Basis by Origination Year, 2018	20,599
Term Loans Amortized Cost Basis by Origination Year, prior	13,664
Revolving Loans	296,900
Revolving Loans Converted to Term Loans	67
Total loans	650,881	625,843
Commercial and industrial | Watch
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	978
Term Loans Amortized Cost Basis by Origination Year, 2021	10,836
Term Loans Amortized Cost Basis by Origination Year, 2020	3,197
Term Loans Amortized Cost Basis by Origination Year, 2019	5,461
Term Loans Amortized Cost Basis by Origination Year, 2018	2,964
Term Loans Amortized Cost Basis by Origination Year, prior	1,872
Revolving Loans	7,212
Revolving Loans Converted to Term Loans	0
Total loans	32,520	33,186
Commercial and industrial | Special Mention
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	23
Term Loans Amortized Cost Basis by Origination Year, 2021	1,251
Term Loans Amortized Cost Basis by Origination Year, 2020	312
Term Loans Amortized Cost Basis by Origination Year, 2019	475
Term Loans Amortized Cost Basis by Origination Year, 2018	240
Term Loans Amortized Cost Basis by Origination Year, prior	319
Revolving Loans	880
Revolving Loans Converted to Term Loans	0
Total loans	3,500	5,724
Commercial and industrial | Substandard
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	2,963
Term Loans Amortized Cost Basis by Origination Year, 2021	12,529
Term Loans Amortized Cost Basis by Origination Year, 2020	3,710
Term Loans Amortized Cost Basis by Origination Year, 2019	967
Term Loans Amortized Cost Basis by Origination Year, 2018	1,276
Term Loans Amortized Cost Basis by Origination Year, prior	2,374
Revolving Loans	3,642
Revolving Loans Converted to Term Loans	0
Total loans	27,461	28,705
Commercial and industrial | Doubtful
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	0
Term Loans Amortized Cost Basis by Origination Year, 2021	88
Term Loans Amortized Cost Basis by Origination Year, 2020	0
Term Loans Amortized Cost Basis by Origination Year, 2019	0
Term Loans Amortized Cost Basis by Origination Year, 2018	0
Term Loans Amortized Cost Basis by Origination Year, prior	0
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total loans	88	101
Paycheck Protection Program (PPP)
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	0
Term Loans Amortized Cost Basis by Origination Year, 2021	68,546
Term Loans Amortized Cost Basis by Origination Year, 2020	10,078
Term Loans Amortized Cost Basis by Origination Year, 2019	0
Term Loans Amortized Cost Basis by Origination Year, 2018	0
Term Loans Amortized Cost Basis by Origination Year, prior	0
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total loans	78,624	145,942
Paycheck Protection Program (PPP) | Pass
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	0
Term Loans Amortized Cost Basis by Origination Year, 2021	68,546
Term Loans Amortized Cost Basis by Origination Year, 2020	10,078
Term Loans Amortized Cost Basis by Origination Year, 2019	0
Term Loans Amortized Cost Basis by Origination Year, 2018	0
Term Loans Amortized Cost Basis by Origination Year, prior	0
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total loans	78,624	145,942
Paycheck Protection Program (PPP) | Watch
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	0
Term Loans Amortized Cost Basis by Origination Year, 2021	0
Term Loans Amortized Cost Basis by Origination Year, 2020	0
Term Loans Amortized Cost Basis by Origination Year, 2019	0
Term Loans Amortized Cost Basis by Origination Year, 2018	0
Term Loans Amortized Cost Basis by Origination Year, prior	0
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total loans	0	0
Paycheck Protection Program (PPP) | Special Mention
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	0
Term Loans Amortized Cost Basis by Origination Year, 2021	0
Term Loans Amortized Cost Basis by Origination Year, 2020	0
Term Loans Amortized Cost Basis by Origination Year, 2019	0
Term Loans Amortized Cost Basis by Origination Year, 2018	0
Term Loans Amortized Cost Basis by Origination Year, prior	0
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total loans	0	0
Paycheck Protection Program (PPP) | Substandard
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	0
Term Loans Amortized Cost Basis by Origination Year, 2021	0
Term Loans Amortized Cost Basis by Origination Year, 2020	0
Term Loans Amortized Cost Basis by Origination Year, 2019	0
Term Loans Amortized Cost Basis by Origination Year, 2018	0
Term Loans Amortized Cost Basis by Origination Year, prior	0
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total loans	0	0
Paycheck Protection Program (PPP) | Doubtful
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	0
Term Loans Amortized Cost Basis by Origination Year, 2021	0
Term Loans Amortized Cost Basis by Origination Year, 2020	0
Term Loans Amortized Cost Basis by Origination Year, 2019	0
Term Loans Amortized Cost Basis by Origination Year, 2018	0
Term Loans Amortized Cost Basis by Origination Year, prior	0
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total loans	0	0
Real estate: | Commercial real estate (including multi-family residential)
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	273,254
Term Loans Amortized Cost Basis by Origination Year, 2021	801,110
Term Loans Amortized Cost Basis by Origination Year, 2020	448,529
Term Loans Amortized Cost Basis by Origination Year, 2019	234,750
Term Loans Amortized Cost Basis by Origination Year, 2018	153,949
Term Loans Amortized Cost Basis by Origination Year, prior	237,413
Revolving Loans	48,497
Revolving Loans Converted to Term Loans	0
Total loans	2,197,502	2,104,621
Real estate: | Commercial real estate (including multi-family residential) | Pass
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	243,672
Term Loans Amortized Cost Basis by Origination Year, 2021	731,797
Term Loans Amortized Cost Basis by Origination Year, 2020	401,058
Term Loans Amortized Cost Basis by Origination Year, 2019	191,714
Term Loans Amortized Cost Basis by Origination Year, 2018	123,931
Term Loans Amortized Cost Basis by Origination Year, prior	172,675
Revolving Loans	43,899
Revolving Loans Converted to Term Loans	0
Total loans	1,908,746	1,813,000
Real estate: | Commercial real estate (including multi-family residential) | Watch
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	8,561
Term Loans Amortized Cost Basis by Origination Year, 2021	33,583
Term Loans Amortized Cost Basis by Origination Year, 2020	23,859
Term Loans Amortized Cost Basis by Origination Year, 2019	20,571
Term Loans Amortized Cost Basis by Origination Year, 2018	9,756
Term Loans Amortized Cost Basis by Origination Year, prior	40,846
Revolving Loans	1,354
Revolving Loans Converted to Term Loans	0
Total loans	138,530	132,542
Real estate: | Commercial real estate (including multi-family residential) | Special Mention
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	1,964
Term Loans Amortized Cost Basis by Origination Year, 2021	11,311
Term Loans Amortized Cost Basis by Origination Year, 2020	3,659
Term Loans Amortized Cost Basis by Origination Year, 2019	6,405
Term Loans Amortized Cost Basis by Origination Year, 2018	2,191
Term Loans Amortized Cost Basis by Origination Year, prior	8,513
Revolving Loans	747
Revolving Loans Converted to Term Loans	0
Total loans	34,790	44,850
Real estate: | Commercial real estate (including multi-family residential) | Substandard
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	19,057
Term Loans Amortized Cost Basis by Origination Year, 2021	24,419
Term Loans Amortized Cost Basis by Origination Year, 2020	19,953
Term Loans Amortized Cost Basis by Origination Year, 2019	16,060
Term Loans Amortized Cost Basis by Origination Year, 2018	18,071
Term Loans Amortized Cost Basis by Origination Year, prior	15,379
Revolving Loans	2,497
Revolving Loans Converted to Term Loans	0
Total loans	115,436	114,229
Real estate: | Commercial real estate (including multi-family residential) | Doubtful
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	0
Term Loans Amortized Cost Basis by Origination Year, 2021	0
Term Loans Amortized Cost Basis by Origination Year, 2020	0
Term Loans Amortized Cost Basis by Origination Year, 2019	0
Term Loans Amortized Cost Basis by Origination Year, 2018	0
Term Loans Amortized Cost Basis by Origination Year, prior	0
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total loans	0	0
Real estate: | Commercial real estate construction and land development
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	61,077
Term Loans Amortized Cost Basis by Origination Year, 2021	268,629
Term Loans Amortized Cost Basis by Origination Year, 2020	71,413
Term Loans Amortized Cost Basis by Origination Year, 2019	21,966
Term Loans Amortized Cost Basis by Origination Year, 2018	8,882
Term Loans Amortized Cost Basis by Origination Year, prior	7,814
Revolving Loans	13,692
Revolving Loans Converted to Term Loans	0
Total loans	453,473	439,125
Real estate: | Commercial real estate construction and land development | Pass
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	59,849
Term Loans Amortized Cost Basis by Origination Year, 2021	260,532
Term Loans Amortized Cost Basis by Origination Year, 2020	67,609
Term Loans Amortized Cost Basis by Origination Year, 2019	17,628
Term Loans Amortized Cost Basis by Origination Year, 2018	6,221
Term Loans Amortized Cost Basis by Origination Year, prior	6,349
Revolving Loans	12,004
Revolving Loans Converted to Term Loans	0
Total loans	430,192	412,169
Real estate: | Commercial real estate construction and land development | Watch
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	1,228
Term Loans Amortized Cost Basis by Origination Year, 2021	1,793
Term Loans Amortized Cost Basis by Origination Year, 2020	3,550
Term Loans Amortized Cost Basis by Origination Year, 2019	2,607
Term Loans Amortized Cost Basis by Origination Year, 2018	1,839
Term Loans Amortized Cost Basis by Origination Year, prior	649
Revolving Loans	1,688
Revolving Loans Converted to Term Loans	0
Total loans	13,354	17,717
Real estate: | Commercial real estate construction and land development | Special Mention
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	0
Term Loans Amortized Cost Basis by Origination Year, 2021	4,792
Term Loans Amortized Cost Basis by Origination Year, 2020	158
Term Loans Amortized Cost Basis by Origination Year, 2019	1,516
Term Loans Amortized Cost Basis by Origination Year, 2018	357
Term Loans Amortized Cost Basis by Origination Year, prior	816
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total loans	7,639	7,331
Real estate: | Commercial real estate construction and land development | Substandard
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	0
Term Loans Amortized Cost Basis by Origination Year, 2021	1,512
Term Loans Amortized Cost Basis by Origination Year, 2020	96
Term Loans Amortized Cost Basis by Origination Year, 2019	215
Term Loans Amortized Cost Basis by Origination Year, 2018	465
Term Loans Amortized Cost Basis by Origination Year, prior	0
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total loans	2,288	1,908
Real estate: | Commercial real estate construction and land development | Doubtful
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	0
Term Loans Amortized Cost Basis by Origination Year, 2021	0
Term Loans Amortized Cost Basis by Origination Year, 2020	0
Term Loans Amortized Cost Basis by Origination Year, 2019	0
Term Loans Amortized Cost Basis by Origination Year, 2018	0
Term Loans Amortized Cost Basis by Origination Year, prior	0
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total loans	0	0
Real estate: | 1-4 family residential (including home equity)
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	54,013
Term Loans Amortized Cost Basis by Origination Year, 2021	177,167
Term Loans Amortized Cost Basis by Origination Year, 2020	136,837
Term Loans Amortized Cost Basis by Origination Year, 2019	82,200
Term Loans Amortized Cost Basis by Origination Year, 2018	48,605
Term Loans Amortized Cost Basis by Origination Year, prior	64,517
Revolving Loans	104,034
Revolving Loans Converted to Term Loans	1,933
Total loans	669,306	685,071
Real estate: | 1-4 family residential (including home equity) | Pass
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	50,699
Term Loans Amortized Cost Basis by Origination Year, 2021	168,960
Term Loans Amortized Cost Basis by Origination Year, 2020	129,031
Term Loans Amortized Cost Basis by Origination Year, 2019	75,939
Term Loans Amortized Cost Basis by Origination Year, 2018	40,462
Term Loans Amortized Cost Basis by Origination Year, prior	55,108
Revolving Loans	95,267
Revolving Loans Converted to Term Loans	1,581
Total loans	617,047	632,428
Real estate: | 1-4 family residential (including home equity) | Watch
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	1,378
Term Loans Amortized Cost Basis by Origination Year, 2021	6,411
Term Loans Amortized Cost Basis by Origination Year, 2020	4,741
Term Loans Amortized Cost Basis by Origination Year, 2019	1,336
Term Loans Amortized Cost Basis by Origination Year, 2018	4,892
Term Loans Amortized Cost Basis by Origination Year, prior	3,842
Revolving Loans	5,898
Revolving Loans Converted to Term Loans	352
Total loans	28,850	30,365
Real estate: | 1-4 family residential (including home equity) | Special Mention
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	1,017
Term Loans Amortized Cost Basis by Origination Year, 2021	534
Term Loans Amortized Cost Basis by Origination Year, 2020	648
Term Loans Amortized Cost Basis by Origination Year, 2019	1,101
Term Loans Amortized Cost Basis by Origination Year, 2018	1,471
Term Loans Amortized Cost Basis by Origination Year, prior	668
Revolving Loans	998
Revolving Loans Converted to Term Loans	0
Total loans	6,437	5,471
Real estate: | 1-4 family residential (including home equity) | Substandard
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	919
Term Loans Amortized Cost Basis by Origination Year, 2021	1,262
Term Loans Amortized Cost Basis by Origination Year, 2020	2,417
Term Loans Amortized Cost Basis by Origination Year, 2019	3,824
Term Loans Amortized Cost Basis by Origination Year, 2018	1,780
Term Loans Amortized Cost Basis by Origination Year, prior	4,899
Revolving Loans	1,871
Revolving Loans Converted to Term Loans	0
Total loans	16,972	16,807
Real estate: | 1-4 family residential (including home equity) | Doubtful
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	0
Term Loans Amortized Cost Basis by Origination Year, 2021	0
Term Loans Amortized Cost Basis by Origination Year, 2020	0
Term Loans Amortized Cost Basis by Origination Year, 2019	0
Term Loans Amortized Cost Basis by Origination Year, 2018	0
Term Loans Amortized Cost Basis by Origination Year, prior	0
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total loans	0	0
Real estate: | Residential construction
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	24,260
Term Loans Amortized Cost Basis by Origination Year, 2021	92,154
Term Loans Amortized Cost Basis by Origination Year, 2020	14,169
Term Loans Amortized Cost Basis by Origination Year, 2019	2,426
Term Loans Amortized Cost Basis by Origination Year, 2018	3,186
Term Loans Amortized Cost Basis by Origination Year, prior	565
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total loans	136,760	117,901
Real estate: | Residential construction | Pass
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	22,064
Term Loans Amortized Cost Basis by Origination Year, 2021	90,796
Term Loans Amortized Cost Basis by Origination Year, 2020	14,169
Term Loans Amortized Cost Basis by Origination Year, 2019	1,524
Term Loans Amortized Cost Basis by Origination Year, 2018	3,186
Term Loans Amortized Cost Basis by Origination Year, prior	565
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total loans	132,304	113,943
Real estate: | Residential construction | Watch
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	2,181
Term Loans Amortized Cost Basis by Origination Year, 2021	667
Term Loans Amortized Cost Basis by Origination Year, 2020	0
Term Loans Amortized Cost Basis by Origination Year, 2019	902
Term Loans Amortized Cost Basis by Origination Year, 2018	0
Term Loans Amortized Cost Basis by Origination Year, prior	0
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total loans	3,750	2,981
Real estate: | Residential construction | Special Mention
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	0
Term Loans Amortized Cost Basis by Origination Year, 2021	0
Term Loans Amortized Cost Basis by Origination Year, 2020	0
Term Loans Amortized Cost Basis by Origination Year, 2019	0
Term Loans Amortized Cost Basis by Origination Year, 2018	0
Term Loans Amortized Cost Basis by Origination Year, prior	0
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total loans	0	0
Real estate: | Residential construction | Substandard
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	15
Term Loans Amortized Cost Basis by Origination Year, 2021	691
Term Loans Amortized Cost Basis by Origination Year, 2020	0
Term Loans Amortized Cost Basis by Origination Year, 2019	0
Term Loans Amortized Cost Basis by Origination Year, 2018	0
Term Loans Amortized Cost Basis by Origination Year, prior	0
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total loans	706	977
Real estate: | Residential construction | Doubtful
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	0
Term Loans Amortized Cost Basis by Origination Year, 2021	0
Term Loans Amortized Cost Basis by Origination Year, 2020	0
Term Loans Amortized Cost Basis by Origination Year, 2019	0
Term Loans Amortized Cost Basis by Origination Year, 2018	0
Term Loans Amortized Cost Basis by Origination Year, prior	0
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total loans	0	0
Consumer and other
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	5,824
Term Loans Amortized Cost Basis by Origination Year, 2021	19,565
Term Loans Amortized Cost Basis by Origination Year, 2020	2,529
Term Loans Amortized Cost Basis by Origination Year, 2019	1,376
Term Loans Amortized Cost Basis by Origination Year, 2018	773
Term Loans Amortized Cost Basis by Origination Year, prior	307
Revolving Loans	3,025
Revolving Loans Converted to Term Loans	0
Total loans	33,399	34,267
Consumer and other | Pass
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	5,824
Term Loans Amortized Cost Basis by Origination Year, 2021	19,452
Term Loans Amortized Cost Basis by Origination Year, 2020	2,493
Term Loans Amortized Cost Basis by Origination Year, 2019	1,093
Term Loans Amortized Cost Basis by Origination Year, 2018	748
Term Loans Amortized Cost Basis by Origination Year, prior	307
Revolving Loans	2,983
Revolving Loans Converted to Term Loans	0
Total loans	32,900	33,638
Consumer and other | Watch
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	0
Term Loans Amortized Cost Basis by Origination Year, 2021	112
Term Loans Amortized Cost Basis by Origination Year, 2020	36
Term Loans Amortized Cost Basis by Origination Year, 2019	141
Term Loans Amortized Cost Basis by Origination Year, 2018	0
Term Loans Amortized Cost Basis by Origination Year, prior	0
Revolving Loans	33
Revolving Loans Converted to Term Loans	0
Total loans	322	381
Consumer and other | Special Mention
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	0
Term Loans Amortized Cost Basis by Origination Year, 2021	0
Term Loans Amortized Cost Basis by Origination Year, 2020	0
Term Loans Amortized Cost Basis by Origination Year, 2019	0
Term Loans Amortized Cost Basis by Origination Year, 2018	15
Term Loans Amortized Cost Basis by Origination Year, prior	0
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total loans	15	19
Consumer and other | Substandard
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	0
Term Loans Amortized Cost Basis by Origination Year, 2021	1
Term Loans Amortized Cost Basis by Origination Year, 2020	0
Term Loans Amortized Cost Basis by Origination Year, 2019	142
Term Loans Amortized Cost Basis by Origination Year, 2018	10
Term Loans Amortized Cost Basis by Origination Year, prior	0
Revolving Loans	9
Revolving Loans Converted to Term Loans	0
Total loans	162	229
Consumer and other | Doubtful
Accounts Notes And Loans Receivable [Line Items]
Term Loans Amortized Cost Basis by Origination Year, 2022	0
Term Loans Amortized Cost Basis by Origination Year, 2021	0
Term Loans Amortized Cost Basis by Origination Year, 2020	0
Term Loans Amortized Cost Basis by Origination Year, 2019	0
Term Loans Amortized Cost Basis by Origination Year, 2018	0
Term Loans Amortized Cost Basis by Origination Year, prior	0
Revolving Loans	0
Revolving Loans Converted to Term Loans	0
Total loans	$ 0	$ 0

LOANS AND ALLOWANCE FOR CREDI_7

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Allowance for Loan Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Allowance for credit losses on loans:
Balance, beginning of period	$ 47,940	$ 53,173
Provision for credit losses on loans	1,592	(70)
Charge-offs	(707)	(404)
Recoveries	390	59
Net charge-offs	(317)	(345)
Balance, end of period	49,215	52,758
Commercial and industrial
Allowance for credit losses on loans:
Balance, beginning of period	16,629	17,738
Provision for credit losses on loans	(383)	1,304
Charge-offs	(341)	(404)
Recoveries	390	59
Net charge-offs	49	(345)
Balance, end of period	16,295	18,697
Paycheck Protection Program (PPP)
Allowance for credit losses on loans:
Balance, beginning of period	0	0
Provision for credit losses on loans	0	0
Charge-offs	0	0
Recoveries	0	0
Net charge-offs	0	0
Balance, end of period	0	0
Real estate: | Commercial real estate (including multi-family residential)
Allowance for credit losses on loans:
Balance, beginning of period	23,143	23,934
Provision for credit losses on loans	1,989	(155)
Charge-offs	(255)	0
Recoveries	0	0
Net charge-offs	(255)	0
Balance, end of period	24,877	23,779
Real estate: | Commercial real estate construction and land development
Allowance for credit losses on loans:
Balance, beginning of period	6,263	6,939
Provision for credit losses on loans	(53)	683
Charge-offs	(63)	0
Recoveries	0	0
Net charge-offs	(63)	0
Balance, end of period	6,147	7,622
Real estate: | 1-4 family residential (including home equity)
Allowance for credit losses on loans:
Balance, beginning of period	847	3,279
Provision for credit losses on loans	(95)	(1,723)
Charge-offs	0	0
Recoveries	0	0
Net charge-offs	0	0
Balance, end of period	752	1,556
Real estate: | Residential construction
Allowance for credit losses on loans:
Balance, beginning of period	975	870
Provision for credit losses on loans	118	(45)
Charge-offs	0	0
Recoveries	0	0
Net charge-offs	0	0
Balance, end of period	1,093	825
Consumer and other
Allowance for credit losses on loans:
Balance, beginning of period	83	413
Provision for credit losses on loans	16	(134)
Charge-offs	(48)	0
Recoveries	0	0
Net charge-offs	(48)	0
Balance, end of period	$ 51	$ 279

LOANS AND ALLOWANCE FOR CREDI_8

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Summary of Amortized Cost Basis of Collateral Dependent Loans Individually Evaluated to Determine Expected Credit Losses (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Financing Receivable Allowance For Credit Losses [Line Items]
Finance receivables allowance of credit losses	$ 14,530	$ 16,568
Real Estate
Financing Receivable Allowance For Credit Losses [Line Items]
Finance receivables allowance of credit losses	9,578	10,242
Business Assets
Financing Receivable Allowance For Credit Losses [Line Items]
Finance receivables allowance of credit losses	4,952	6,168
Other
Financing Receivable Allowance For Credit Losses [Line Items]
Finance receivables allowance of credit losses	0	158
Commercial and industrial
Financing Receivable Allowance For Credit Losses [Line Items]
Finance receivables allowance of credit losses	4,952	6,168
Commercial and industrial | Real Estate
Financing Receivable Allowance For Credit Losses [Line Items]
Finance receivables allowance of credit losses	0	0
Commercial and industrial | Business Assets
Financing Receivable Allowance For Credit Losses [Line Items]
Finance receivables allowance of credit losses	4,952	6,168
Commercial and industrial | Other
Financing Receivable Allowance For Credit Losses [Line Items]
Finance receivables allowance of credit losses	0	0
Paycheck Protection Program (PPP)
Financing Receivable Allowance For Credit Losses [Line Items]
Finance receivables allowance of credit losses	0	0
Paycheck Protection Program (PPP) | Real Estate
Financing Receivable Allowance For Credit Losses [Line Items]
Finance receivables allowance of credit losses	0	0
Paycheck Protection Program (PPP) | Business Assets
Financing Receivable Allowance For Credit Losses [Line Items]
Finance receivables allowance of credit losses	0	0
Paycheck Protection Program (PPP) | Other
Financing Receivable Allowance For Credit Losses [Line Items]
Finance receivables allowance of credit losses	0	0
Real estate: | Commercial real estate (including multi-family residential)
Financing Receivable Allowance For Credit Losses [Line Items]
Finance receivables allowance of credit losses	5,080	5,494
Real estate: | Commercial real estate (including multi-family residential) | Real Estate
Financing Receivable Allowance For Credit Losses [Line Items]
Finance receivables allowance of credit losses	5,080	5,494
Real estate: | Commercial real estate (including multi-family residential) | Business Assets
Financing Receivable Allowance For Credit Losses [Line Items]
Finance receivables allowance of credit losses	0	0
Real estate: | Commercial real estate (including multi-family residential) | Other
Financing Receivable Allowance For Credit Losses [Line Items]
Finance receivables allowance of credit losses	0	0
Real estate: | Commercial real estate construction and land development
Financing Receivable Allowance For Credit Losses [Line Items]
Finance receivables allowance of credit losses	0	63
Real estate: | Commercial real estate construction and land development | Real Estate
Financing Receivable Allowance For Credit Losses [Line Items]
Finance receivables allowance of credit losses	0	63
Real estate: | Commercial real estate construction and land development | Business Assets
Financing Receivable Allowance For Credit Losses [Line Items]
Finance receivables allowance of credit losses	0	0
Real estate: | Commercial real estate construction and land development | Other
Financing Receivable Allowance For Credit Losses [Line Items]
Finance receivables allowance of credit losses	0	0
Real estate: | 1-4 family residential (including home equity)
Financing Receivable Allowance For Credit Losses [Line Items]
Finance receivables allowance of credit losses	4,498	4,685
Real estate: | 1-4 family residential (including home equity) | Real Estate
Financing Receivable Allowance For Credit Losses [Line Items]
Finance receivables allowance of credit losses	4,498	4,685
Real estate: | 1-4 family residential (including home equity) | Business Assets
Financing Receivable Allowance For Credit Losses [Line Items]
Finance receivables allowance of credit losses	0	0
Real estate: | 1-4 family residential (including home equity) | Other
Financing Receivable Allowance For Credit Losses [Line Items]
Finance receivables allowance of credit losses	0	0
Real estate: | Residential construction
Financing Receivable Allowance For Credit Losses [Line Items]
Finance receivables allowance of credit losses	0	0
Real estate: | Residential construction | Real Estate
Financing Receivable Allowance For Credit Losses [Line Items]
Finance receivables allowance of credit losses	0	0
Real estate: | Residential construction | Business Assets
Financing Receivable Allowance For Credit Losses [Line Items]
Finance receivables allowance of credit losses	0	0
Real estate: | Residential construction | Other
Financing Receivable Allowance For Credit Losses [Line Items]
Finance receivables allowance of credit losses	0	0
Consumer and other
Financing Receivable Allowance For Credit Losses [Line Items]
Finance receivables allowance of credit losses	0	158
Consumer and other | Real Estate
Financing Receivable Allowance For Credit Losses [Line Items]
Finance receivables allowance of credit losses	0	0
Consumer and other | Business Assets
Financing Receivable Allowance For Credit Losses [Line Items]
Finance receivables allowance of credit losses	0	0
Consumer and other | Other
Financing Receivable Allowance For Credit Losses [Line Items]
Finance receivables allowance of credit losses	$ 0	$ 158

LOANS AND ALLOWANCE FOR CREDI_9

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Summary of Nonaccrual Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Financing Receivable Nonaccrual Status [Line Items]
Nonaccrual Loans with No Related Allowance	$ 18,515	$ 13,387
Nonaccrual Loans with Related Allowance	7,760	10,740
Total Nonaccrual Loans	26,275	24,127
Commercial and industrial
Financing Receivable Nonaccrual Status [Line Items]
Nonaccrual Loans with No Related Allowance	3,787	1,824
Nonaccrual Loans with Related Allowance	4,022	6,534
Total Nonaccrual Loans	7,809	8,358
Paycheck Protection Program (PPP)
Financing Receivable Nonaccrual Status [Line Items]
Nonaccrual Loans with No Related Allowance	0	0
Nonaccrual Loans with Related Allowance	0	0
Total Nonaccrual Loans	0	0
Real estate: | Commercial real estate (including multi-family residential)
Financing Receivable Nonaccrual Status [Line Items]
Nonaccrual Loans with No Related Allowance	12,540	9,018
Nonaccrual Loans with Related Allowance	2,719	3,621
Total Nonaccrual Loans	15,259	12,639
Real estate: | Commercial real estate construction and land development
Financing Receivable Nonaccrual Status [Line Items]
Nonaccrual Loans with No Related Allowance	0	63
Nonaccrual Loans with Related Allowance	0	0
Total Nonaccrual Loans	0	63
Real estate: | 1-4 family residential (including home equity)
Financing Receivable Nonaccrual Status [Line Items]
Nonaccrual Loans with No Related Allowance	2,046	2,324
Nonaccrual Loans with Related Allowance	1,019	551
Total Nonaccrual Loans	3,065	2,875
Real estate: | Residential construction
Financing Receivable Nonaccrual Status [Line Items]
Nonaccrual Loans with No Related Allowance	0	0
Nonaccrual Loans with Related Allowance	0	0
Total Nonaccrual Loans	0	0
Consumer and other
Financing Receivable Nonaccrual Status [Line Items]
Nonaccrual Loans with No Related Allowance	142	158
Nonaccrual Loans with Related Allowance	0	34
Total Nonaccrual Loans	$ 142	$ 192

LOANS AND ALLOWANCE FOR CRED_10

LOANS AND ALLOWANCE FOR CREDIT LOSSES - Loans Modified in a Troubled Debt Restructuring (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022USD ($)contract	Mar. 31, 2021USD ($)contract
Accounts Notes And Loans Receivable [Line Items]
Number of Contracts | contract	4	1
Pre-Modification of Outstanding Recorded Investment	$ 1,207	$ 545
Post Modification of Outstanding Recorded Investment	$ 1,207	$ 545
Commercial and industrial
Accounts Notes And Loans Receivable [Line Items]
Number of Contracts | contract	0	0
Pre-Modification of Outstanding Recorded Investment	$ 0	$ 0
Post Modification of Outstanding Recorded Investment	$ 0	$ 0
Paycheck Protection Program (PPP)
Accounts Notes And Loans Receivable [Line Items]
Number of Contracts | contract	0	0
Pre-Modification of Outstanding Recorded Investment	$ 0	$ 0
Post Modification of Outstanding Recorded Investment	$ 0	$ 0
Real estate: | Commercial real estate (including multi-family residential)
Accounts Notes And Loans Receivable [Line Items]
Number of Contracts | contract	4	1
Pre-Modification of Outstanding Recorded Investment	$ 1,207	$ 545
Post Modification of Outstanding Recorded Investment	$ 1,207	$ 545
Real estate: | Commercial real estate construction and land development
Accounts Notes And Loans Receivable [Line Items]
Number of Contracts | contract	0	0
Pre-Modification of Outstanding Recorded Investment	$ 0	$ 0
Post Modification of Outstanding Recorded Investment	$ 0	$ 0
Real estate: | 1-4 family residential (including home equity)
Accounts Notes And Loans Receivable [Line Items]
Number of Contracts | contract	0	0
Pre-Modification of Outstanding Recorded Investment	$ 0	$ 0
Post Modification of Outstanding Recorded Investment	$ 0	$ 0
Real estate: | Residential construction
Accounts Notes And Loans Receivable [Line Items]
Number of Contracts | contract	0	0
Pre-Modification of Outstanding Recorded Investment	$ 0	$ 0
Post Modification of Outstanding Recorded Investment	$ 0	$ 0
Consumer and other
Accounts Notes And Loans Receivable [Line Items]
Number of Contracts | contract	0	0
Pre-Modification of Outstanding Recorded Investment	$ 0	$ 0
Post Modification of Outstanding Recorded Investment	$ 0	$ 0

LEASES - Narrative (Details)

LEASES - Narrative (Details)	3 Months Ended
	Mar. 31, 2022lease
Lessee Lease Description [Line Items]
Number of leased branch locations and office space along with equipment	17
Maximum
Lessee Lease Description [Line Items]
Operating lease renewal term	5 years
Minimum
Lessee Lease Description [Line Items]
Operating lease renewal term	1 year

LEASES - Supplemental Lease Inf

LEASES - Supplemental Lease Information (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Balance Sheet:
Operating lease right of use asset classified as premises and equipment	$ 9,505	$ 10,196
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Premises and equipment, net	Premises and equipment, net
Operating lease liability classified as other liabilities	$ 9,656	$ 10,370
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Other liabilities	Other liabilities
Weighted average lease term, in years	4 years 10 months 17 days	4 years 11 months 19 days
Weighted average discount rate	2.61%	2.62%

LEASES - Summary of Lease Costs

LEASES - Summary of Lease Costs (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Statement:
Operating lease cost	$ 892	$ 873
Short-term lease cost	0	15
Sublease income	0	(18)
Total operating lease costs	$ 892	$ 870

LEASES - Maturity Analysis of L

LEASES - Maturity Analysis of Lease Liabilities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Lease payments due:
Within one year	$ 2,137	$ 2,951
After one but within two years	2,362	2,350
After two but within three years	1,904	1,892
After three but within four years	1,378	1,366
After four but within five years	907	894
After five years	1,586	1,594
Total lease payments	10,274	11,047
Less: discount on cash flows	618	677
Operating lease liability classified as other liabilities	$ 9,656	$ 10,370

FAIR VALUE - Carrying Amounts a

FAIR VALUE - Carrying Amounts and Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available for sale securities	$ 1,790,707	$ 1,773,765
Accrued interest receivable	24,100	26,000
Carrying Amount
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	699,384	757,509
Available for sale securities	1,790,707	1,773,765
Loans held for investment, net of allowance	4,234,299	4,172,546
Accrued interest receivable	31,505	33,392
Deposits	6,162,327	6,047,639
Accrued interest payable	3,086	1,753
Borrowed funds	89,959	89,956
Subordinated debt	108,978	108,847
Estimated Fair Value
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	699,384	757,509
Available for sale securities	1,790,707	1,773,765
Loans held for investment, net of allowance	4,205,514	4,143,552
Accrued interest receivable	31,505	33,394
Deposits	6,150,816	6,046,050
Accrued interest payable	3,086	1,753
Borrowed funds	89,969	73,699
Subordinated debt	113,458	113,355
Estimated Fair Value | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	699,384	757,509
Available for sale securities	0	0
Loans held for investment, net of allowance	0	0
Accrued interest receivable	44	6
Deposits	0	0
Accrued interest payable	0	0
Borrowed funds	0	0
Subordinated debt	0	0
Estimated Fair Value | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	0
Available for sale securities	1,790,707	1,773,765
Loans held for investment, net of allowance	0	0
Accrued interest receivable	7,409	7,435
Deposits	6,150,816	6,046,050
Accrued interest payable	3,086	1,753
Borrowed funds	89,969	73,699
Subordinated debt	113,458	113,355
Estimated Fair Value | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and cash equivalents	0	0
Available for sale securities	0	0
Loans held for investment, net of allowance	4,205,514	4,143,552
Accrued interest receivable	24,052	25,953
Deposits	0	0
Accrued interest payable	0	0
Borrowed funds	0	0
Subordinated debt	$ 0	$ 0

FAIR VALUE - Narrative (Details

FAIR VALUE - Narrative (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Real estate acquired through foreclosure	$ 0	$ 0
Collateral Dependent Loans Specific Allocation of Allowance for Credit Losses on Loans | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Percentage of estimated selling and closing costs of collateral	5.00%
Collateral Dependent Loans Specific Allocation of Allowance for Credit Losses on Loans | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Percentage of estimated selling and closing costs of collateral	10.00%
Other Real Estate Owned | Minimum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Percentage of estimated selling and closing costs of collateral	5.00%
Other Real Estate Owned | Maximum
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Percentage of estimated selling and closing costs of collateral	10.00%
Recurring Basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial liabilities	$ 0		$ 0
Nonrecurring Basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Financial liabilities	$ 0	$ 0

FAIR VALUE - Fair Values for As

FAIR VALUE - Fair Values for Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 1,790,707	$ 1,773,765
U.S. government and agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	413,095	400,551
Municipal securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	459,703	497,100
Agency mortgage-backed pass-through securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	300,866	302,596
Agency collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	484,118	441,056
Corporate bonds and other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	132,925	132,462
Recurring Basis
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	1,790,707	1,773,765
Recurring Basis | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Recurring Basis | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	1,790,707	1,773,765
Recurring Basis | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Recurring Basis | U.S. government and agency securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	413,095	400,551
Recurring Basis | U.S. government and agency securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Recurring Basis | U.S. government and agency securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	413,095	400,551
Recurring Basis | U.S. government and agency securities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Recurring Basis | Municipal securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	459,703	497,100
Recurring Basis | Municipal securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Recurring Basis | Municipal securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	459,703	497,100
Recurring Basis | Municipal securities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Recurring Basis | Agency mortgage-backed pass-through securities
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	300,866	302,596
Recurring Basis | Agency mortgage-backed pass-through securities | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Recurring Basis | Agency mortgage-backed pass-through securities | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	300,866	302,596
Recurring Basis | Agency mortgage-backed pass-through securities | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Recurring Basis | Agency collateralized mortgage obligations
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	484,118	441,056
Recurring Basis | Agency collateralized mortgage obligations | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Recurring Basis | Agency collateralized mortgage obligations | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	484,118	441,056
Recurring Basis | Agency collateralized mortgage obligations | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Recurring Basis | Corporate bonds and other
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	132,925	132,462
Recurring Basis | Corporate bonds and other | Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	0	0
Recurring Basis | Corporate bonds and other | Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	132,925	132,462
Recurring Basis | Corporate bonds and other | Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Fair Value	$ 0	$ 0

FAIR VALUE - Assets Measured at

FAIR VALUE - Assets Measured at Fair Value on a Nonrecurring Basis (Details) - Nonrecurring Basis - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Level 1
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Branch assets held for sale	$ 0	$ 2,925
Assets and liabilities are measured at fair value, nonrecurring basis	0	2,925
Level 1 | Commercial real estate construction and land development
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans:	0	0
Level 1 | 1-4 family residential (including home equity)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans:	0	0
Level 1 | Residential construction
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans:	0	0
Level 1 | Commercial and industrial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans:	0	0
Level 1 | Commercial real estate (including multi- family residential)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans:	0	0
Level 2
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Branch assets held for sale	0	0
Assets and liabilities are measured at fair value, nonrecurring basis	0	0
Level 2 | Commercial real estate construction and land development
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans:	0	0
Level 2 | 1-4 family residential (including home equity)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans:	0	0
Level 2 | Residential construction
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans:	0	0
Level 2 | Commercial and industrial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans:	0	0
Level 2 | Commercial real estate (including multi- family residential)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans:	0	0
Level 3
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Branch assets held for sale	3,598	0
Assets and liabilities are measured at fair value, nonrecurring basis	68,292	44,965
Level 3 | Commercial real estate construction and land development
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans:	192	72
Level 3 | 1-4 family residential (including home equity)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans:	2,322	2,806
Level 3 | Residential construction
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans:	538	500
Level 3 | Commercial and industrial
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans:	7,073	6,960
Level 3 | Commercial real estate (including multi- family residential)
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Loans:	$ 54,569	$ 34,627

DEPOSITS - Narrative (Details)

DEPOSITS - Narrative (Details) - USD ($) $ in Millions	Mar. 31, 2022	Dec. 31, 2021
Deposit Liabilities [Abstract]
Time deposits, at or above FDIC insurance limit	$ 625.2	$ 707.5
Brokered deposits	$ 303.7	$ 306.4

DEPOSITS - Time Deposits by Mat

DEPOSITS - Time Deposits by Maturity (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Deposit Liabilities [Abstract]
Within one year	$ 951,588
After one but within two years	121,161
After two but within three years	48,699
After three but within four years	27,255
After four but within five years	36,312
Total	$ 1,185,015	$ 1,290,825

DERIVATIVE INSTRUMENTS - Narrat

DERIVATIVE INSTRUMENTS - Narrative (Details) $ in Thousands	3 Months Ended
	Jun. 30, 2021USD ($)
Interest rate swaps
Derivative Instruments Gain Loss [Line Items]
Gain on sale of derivatives	$ 225

DERIVATIVE INSTRUMENTS - Effect

DERIVATIVE INSTRUMENTS - Effect of Cash Flow Hedge Relationship on Statement of Comprehensive Income (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash Flow Hedging | Designated as Hedging Instrument | Interest rate swaps
Derivative Instruments Gain Loss [Line Items]
Interest rate swaps	$ 0	$ 1,824

BORROWINGS AND BORROWING CAPA_2

BORROWINGS AND BORROWING CAPACITY (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Dec. 28, 2018
Revolving Credit Agreement
Debt Instrument [Line Items]
Outstanding amount	$ 0
Amended Revolving Credit Agreement
Debt Instrument [Line Items]
Percentage of debt secured by capital stock	100.00%
Borrowing Agreement | Prime Rate
Debt Instrument [Line Items]
Basis spread on variable rate	0.25%
Effective interest rate	3.25%
Credit Facility With Another Financial Institution | Amended Revolving Credit Agreement
Debt Instrument [Line Items]
Maximum borrowing capacity		$ 45,000,000
Annual reduction in borrowing capacity		$ 7,500,000
Federal Home Loan Bank of Dallas
Debt Instrument [Line Items]
Maximum borrowing capacity	$ 2,540,000,000
Remaining borrowing capacity	1,120,000,000
Outstanding amount	1,420,000,000
Letters of credit, outstanding amount	1,330,000,000
Federal Home Loan Bank of Dallas | Expire in 2022
Debt Instrument [Line Items]
Letters of credit, outstanding amount	1,150,000,000
Federal Home Loan Bank of Dallas | Expire in 2023
Debt Instrument [Line Items]
Letters of credit, outstanding amount	101,200,000
Federal Home Loan Bank of Dallas | Expire in 2024
Debt Instrument [Line Items]
Letters of credit, outstanding amount	57,900,000
Federal Home Loan Bank of Dallas | Expire In 2025
Debt Instrument [Line Items]
Letters of credit, outstanding amount	16,000,000
Federal Home Loan Bank of Dallas | Short-term Debt
Debt Instrument [Line Items]
Federal Home Loan Bank, advances	$ 90,000,000
Federal Home Loan Bank of Dallas | Short-term Debt | Weighted Average
Debt Instrument [Line Items]
Federal Home Loan Bank, advances, interest rate	0.74%

SUBORDINATED DEBT - Narrative (

SUBORDINATED DEBT - Narrative (Details) - USD ($) $ in Millions	1 Months Ended		3 Months Ended
	Sep. 30, 2019	Dec. 31, 2017	Mar. 31, 2022	Jan. 01, 2015
Subordinated Notes | Fixed-to-Floating Rate Subordinated Notes
Subordinated Borrowing [Line Items]
Debt instrument, face amount	$ 60	$ 40
Issuance price	100.00%	100.00%
Proceeds from issuance of debt	$ 58.6	$ 39.4
Stated percentage	4.70%	5.25%
Redemption price	100.00%	100.00%
Subordinated Notes | Fixed-to-Floating Rate Subordinated Notes | 3 month LIBOR
Subordinated Borrowing [Line Items]
Basis spread on variable rate	3.13%	3.03%
F&M Bancshares. Inc. | Junior Subordinated Debt
Subordinated Borrowing [Line Items]
Debentures, period over which company may defer interest payments			5 years
Debt instrument, face amount				$ 11.3
Debt instrument, carrying value				9.8
Debt instrument, unamortized discount				$ 2.5

SUBORDINATED DEBT - Summary of

SUBORDINATED DEBT - Summary of Pertinent Information Related to Junior Subordinated Debentures (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022USD ($)
Subordinated Borrowing [Line Items]
Junior Subordinated Debt Owed to Trusts	$ 11,341
Junior Subordinated Debt | 3 month LIBOR
Subordinated Borrowing [Line Items]
Effective interest rate	0.83971%
Junior Subordinated Debt | Farmers & Merchants Capital Trust II
Subordinated Borrowing [Line Items]
Trust Preferred Securities Outstanding	$ 7,500
Junior Subordinated Debt Owed to Trusts	$ 7,732
Junior Subordinated Debt | Farmers & Merchants Capital Trust II | 3 month LIBOR
Subordinated Borrowing [Line Items]
Interest Rate	3.00%
Junior Subordinated Debt | Farmers & Merchants Capital Trust III
Subordinated Borrowing [Line Items]
Trust Preferred Securities Outstanding	$ 3,500
Junior Subordinated Debt Owed to Trusts	$ 3,609
Junior Subordinated Debt | Farmers & Merchants Capital Trust III | 3 month LIBOR
Subordinated Borrowing [Line Items]
Interest Rate	1.80%

INCOME TAXES (Details)

INCOME TAXES (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Income Tax Disclosure [Abstract]
Income tax expense	$ 4,202,000	$ 3,866,000
Effective income tax rate reconciliation	18.40%	17.70%
Unrecognized tax benefits, income tax penalties and interest expense	$ 0

STOCK BASED COMPENSATION - Narr

STOCK BASED COMPENSATION - Narrative (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022USD ($)compensationPlanshares	Mar. 31, 2021USD ($)shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of stock-based employee compensation plans | compensationPlan	2
Number of shares authorized (in shares)	3,200,000
Share-based compensation expense | $	$ 959	$ 820
Employee Stock Option
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized (in shares)	1,800,000
Option, cumulative options granted since inception (in shares)	1,309,231
Expiration period	10 years
Award vesting period	4 years
Unrecognized compensation cost | $	$ 0
Restricted Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Option, cumulative options granted since inception (in shares)	1,743
Award vesting period	4 years
Unrecognized compensation cost | $	$ 3,600
Weighted average period over which unrecognized compensation	2 years 3 months 10 days
Share awards granted (in shares)	2,000
Performance Share Units
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period	2 years
Weighted average period over which unrecognized compensation	1 year 9 months 3 days
Service period	1 year
Share awards granted (in shares)	0	56,255
Unrecognized compensation expense | $	$ 1,600

STOCK BASED COMPENSATION - Stoc

STOCK BASED COMPENSATION - Stock Option Plans Activity (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Number of Options
Options outstanding, beginning balance (in shares)	283
Options granted (in shares)	0
Options exercised (in shares)	(33)
Options forfeited (in shares)	(6)
Options outstanding, ending balance (in shares)	244	283
Number of options vested and exercisable (in shares)	244
Weighted Average Exercise Price
Options outstanding, beginning balance (in dollars per share)	$ 22.74
Options granted (in dollars per share)	0
Options exercised (in dollars per share)	20.21
Options forfeited (in dollars per share)	31.73
Options outstanding, ending balance (in dollars per share)	22.86	$ 22.74
Weighted Average Exercise Price, Options vested and exercisable (in dollars per share)	$ 22.86
Weighted Average Remaining Contractual Term, Options outstanding	2 years 8 months 15 days	2 years 10 months 24 days
Weighted Average Remaining Contractual Term, Options vested and exercisable	2 years 8 months 15 days
Aggregate Intrinsic Value, Options outstanding	$ 5,330	$ 5,508
Aggregate Intrinsic Value, Options vested and exercisable	$ 5,330

STOCK BASED COMPENSATION - Summ

STOCK BASED COMPENSATION - Summary of Restricted Stock Activity (Details) - Restricted Stock shares in Thousands	3 Months Ended
	Mar. 31, 2022$ / sharesshares
Number of Shares
Nonvested share awards outstanding, beginning balance (in shares) | shares	168
Share awards granted (in shares) | shares	2
Share awards vested (in shares) | shares	(17)
Unvested share awards forfeited or cancelled (in shares) | shares	(1)
Nonvested share awards outstanding, ending balance (in shares) | shares	152
Weighted Average Grant Date Fair Value
Nonvested share awards outstanding, beginning balance (in dollars per share) | $ / shares	$ 34.23
Share awards granted (in dollars per share) | $ / shares	42.21
Share awards vested (in dollars per share) | $ / shares	38.46
Unvested share awards forfeited or cancelled (in dollars per share) | $ / shares	34.63
Nonvested share awards outstanding, ending balance (in dollars per share) | $ / shares	$ 33.86

OFF-BALANCE SHEET ARRANGEMENT_3

OFF-BALANCE SHEET ARRANGEMENTS, COMMITMENTS AND CONTINGENCIES - Contractual Amounts of Financial Instruments With Off-balance Sheet Risk (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fixed Rate	$ 542,322	$ 492,977
Variable Rate	646,593	619,730
Commitments to extend credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fixed Rate	534,330	484,441
Variable Rate	632,875	607,106
Standby letters of credit
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Fixed Rate	7,992	8,536
Variable Rate	$ 13,718	$ 12,624

OFF-BALANCE SHEET ARRANGEMENT_4

OFF-BALANCE SHEET ARRANGEMENTS, COMMITMENTS AND CONTINGENCIES - Narrative (Details) - USD ($) $ in Millions	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Commitments to make loans, period	120 days
Off-balance-sheet, allowance for credit losses	$ 5.5	$ 5.3
Minimum
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance-sheet fixed rate loan commitments, interest rate	1.00%	1.00%
Off-balance-sheet fixed rate loan commitments, weighted average maturity	3 years 8 months 12 days	3 years 8 months 15 days
Maximum
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance-sheet fixed rate loan commitments, interest rate	13.49%	13.49%
Weighted Average
Fair Value, Off-balance Sheet Risks, Disclosure Information [Line Items]
Off-balance-sheet fixed rate loan commitments, interest rate	4.72%	4.68%

OFF-BALANCE SHEET ARRANGEMENT_5

OFF-BALANCE SHEET ARRANGEMENTS, COMMITMENTS AND CONTINGENCIES - Schedule of Off-Balance Sheet (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Balance, beginning of period	$ 5,298	$ 4,697
Provision for credit losses on unfunded commitments	222	709
Balance, end of period	$ 5,520	$ 5,406

REGULATORY CAPITAL MATTERS - Na

REGULATORY CAPITAL MATTERS - Narrative (Details)	Mar. 31, 2022	Dec. 31, 2021
Regulatory Capital Matters [Abstract]
Capital conservation buffer	2.50%	2.50%

REGULATORY CAPITAL MATTERS - Ac

REGULATORY CAPITAL MATTERS - Actual and Required Capital (Details) $ in Thousands	Mar. 31, 2022USD ($)	Dec. 31, 2021USD ($)
Total Capital
Capital	$ 741,722	$ 722,010
Capital to Risk Weighted Assets	0.1576	0.1608
Capital Required for Capital Adequacy	$ 376,611	$ 359,214
Capital Required for Capital Adequacy to Risk Weighted Assets	0.0800	0.0800
Plus Capital Conservation Buffer	$ 494,302	$ 471,468
Plus Capital Conservation Buffer to Risk Weighted Assets	0.1050	0.1050
Common Equity Tier 1 Capital
Common Equity Tier 1 Risk Based Capital	$ 578,009	$ 559,926
Common Equity Tier 1 Risk Based Capital to Risk Weighted Assets	0.1228	0.1247
Common Equity Tier 1 Risk Based Capital Required for Capital Adequacy	$ 211,844	$ 202,058
Common Equity Tier 1 Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	0.0450	0.0450
Plus Common Equity Tier 1 Risk Based Capital	$ 329,535	$ 314,312
Plus Common Equity Tier 1 Risk Based Capital to Risk Weighted Assets	0.0700	0.0700
Tier 1 Capital
Tier 1 Risk Based Capital	$ 587,790	$ 569,678
Tier 1 Risk Based Capital to Risk Weighted Assets	0.1249	0.1269
Tier 1 Risk Based Capital Required for Capital Adequacy	$ 282,458	$ 269,410
Tier 1 Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	0.0600	0.0600
Plus Tier 1 Risk Based Capital	$ 400,149	$ 381,665
Plus Tier 1 Risk Based Capital to Risk Weighted Assets	0.0850	0.0850
Tier 1 Capital
Tier 1 Leverage Capital	$ 587,790	$ 569,678
Tier 1 Leverage Capital to Average Assets	0.0837	0.0853
Tier 1 Leverage Capital Required for Capital Adequacy	$ 280,972	$ 267,286
Tier 1 Leverage Capital Required for Capital Adequacy to Average Assets	0.0400	0.0400
Plus Tier 1 Leverage Capital	$ 280,972	$ 267,286
Plus Tier 1 Leverage Capital to Average Assets	0.0400	0.0400
Allegiance Bank
Total Capital
Capital	$ 681,690	$ 659,596
Capital to Risk Weighted Assets	0.1450	0.1471
Capital Required for Capital Adequacy	$ 376,164	$ 358,793
Capital Required for Capital Adequacy to Risk Weighted Assets	0.0800	0.0800
Plus Capital Conservation Buffer	$ 493,715	$ 470,916
Plus Capital Conservation Buffer to Risk Weighted Assets	0.1050	0.1050
Capital Required to be Well Capitalized	$ 470,205	$ 448,491
Capital Required to be Well Capitalized to Risk Weighted Assets	0.1000	0.1000
Common Equity Tier 1 Capital
Common Equity Tier 1 Risk Based Capital	$ 587,047	$ 566,483
Common Equity Tier 1 Risk Based Capital to Risk Weighted Assets	0.1248	0.1263
Common Equity Tier 1 Risk Based Capital Required for Capital Adequacy	$ 211,592	$ 201,821
Common Equity Tier 1 Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	0.0450	0.0450
Plus Common Equity Tier 1 Risk Based Capital	$ 329,144	$ 313,944
Plus Common Equity Tier 1 Risk Based Capital to Risk Weighted Assets	0.0700	0.0700
Common Equity Tier 1 Risk Based Capital Required to be Well Capitalized	$ 305,633	$ 291,519
Common Equity Tier 1 Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	0.0650	0.0650
Tier 1 Capital
Tier 1 Risk Based Capital	$ 587,047	$ 566,483
Tier 1 Risk Based Capital to Risk Weighted Assets	0.1248	0.1263
Tier 1 Risk Based Capital Required for Capital Adequacy	$ 282,123	$ 269,095
Tier 1 Risk Based Capital Required for Capital Adequacy to Risk Weighted Assets	0.0600	0.0600
Plus Tier 1 Risk Based Capital	$ 399,674	$ 381,217
Plus Tier 1 Risk Based Capital to Risk Weighted Assets	0.0850	0.0850
Tier 1 Risk Based Capital Required to be Well Capitalized	$ 376,164	$ 358,793
Tier 1 Risk Based Capital Required to be Well Capitalized to Risk Weighted Assets	0.0800	0.0800
Tier 1 Capital
Tier 1 Leverage Capital	$ 587,047	$ 566,483
Tier 1 Leverage Capital to Average Assets	0.0837	0.0849
Tier 1 Leverage Capital Required for Capital Adequacy	$ 280,607	$ 266,944
Tier 1 Leverage Capital Required for Capital Adequacy to Average Assets	0.0400	0.0400
Plus Tier 1 Leverage Capital	$ 280,607	$ 266,944
Plus Tier 1 Leverage Capital to Average Assets	0.0400	0.0400
Tier 1 Leverage Capital Required to be Well Capitalized	$ 350,758	$ 333,680
Tier 1 Leverage Capital Required to be Well Capitalized to Average Assets	0.0500	0.0500

EARNINGS PER COMMON SHARE - Sum

EARNINGS PER COMMON SHARE - Summary of Basic and Diluted Earnings Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Earnings Per Share [Abstract]
Net income attributable to shareholders	$ 18,657	$ 18,010
Basic:
Weighted average shares outstanding (in shares)	20,363	20,140
Weighted average shares outstanding (in dollars per share)	$ 0.92	$ 0.89
Diluted:
Dilutive effect of stock option exercises and performance share units (in shares)	163	202
Total (in shares)	20,526	20,342
Total (in dollars per share)	$ 0.91	$ 0.89

EARNINGS PER COMMON SHARE - Nar

EARNINGS PER COMMON SHARE - Narrative (Details) - shares	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Employee Stock Option
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from computation of earnings per share (in shares)	0	0