South Plains Financial (SPFI) 10-K 11 Mar 21 2020 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Mar. 10, 2021	Jun. 30, 2020
Cover [Abstract]
Entity Registrant Name	SOUTH PLAINS FINANCIAL, INC.
Entity Central Index Key	0001163668
Current Fiscal Year End Date	--12-31
Document Type	10-K
Amendment Flag	false
Document Period End Date	Dec. 31, 2020
Document Fiscal Year Focus	2020
Document Fiscal Period Focus	FY
Entity Address, State or Province	TX
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Accelerated Filer
Entity Small Business	true
Entity Emerging Growth Company	true
Entity Ex Transition Period	false
Entity Shell Company	false
Entity Public Float			$ 191.4
Entity Common Stock, Shares Outstanding		18,044,388

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
ASSETS
Cash and due from banks	$ 76,146	$ 56,246
Interest-bearing deposits in banks	224,161	101,853
Cash and cash equivalents	300,307	158,099
Securities available for sale	803,087	707,650
Loans held for sale	111,477	49,035
Loans held for investment	2,221,583	2,143,623
Allowance for loan losses	(45,553)	(24,197)
Accrued interest receivable	15,233	13,924
Premises and equipment, net	60,331	61,873
Bank-owned life insurance	70,731	69,397
Goodwill	19,508	18,757
Intangible assets, net	7,562	8,632
Mortgage servicing rights	9,049	2,054
Deferred tax asset, net	2,461	5,619
Other assets	23,384	22,701
Total assets	3,599,160	3,237,167
Deposits:
Noninterest-bearing	917,322	790,921
Interest-bearing	2,057,029	1,905,936
Total deposits	2,974,351	2,696,857
Short-term borrowings	26,550	37,165
Accrued expenses and other liabilities	31,229	29,098
Notes payable & other borrowings	75,000	95,000
Subordinated debt securities	75,589	26,472
Junior subordinated deferrable interest debentures	46,393	46,393
Total liabilities	3,229,112	2,930,985
Stockholders' equity:
Common stock, $1 par value, 30,000,000 shares authorized; 18,076,364 issued in 2020 and 18,036,115 issued in 2019	18,076	18,036
Additional paid-in capital	141,112	140,492
Retained earnings	189,521	146,696
Accumulated other comprehensive income	21,339	958
Total stockholders' equity	370,048	306,182
Total liabilities and stockholders' equity	$ 3,599,160	$ 3,237,167

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - $ / shares	Dec. 31, 2020	Dec. 31, 2019
Stockholders' equity:
Common stock, par value (in dollars per share)	$ 1	$ 1
Common stock, shares authorized (in shares)	30,000,000	30,000,000
Common stock, shares issued (in shares)	18,076,364	18,036,115

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Interest income:
Loans, including fees	$ 121,733	$ 116,904
Securities:
Taxable	12,267	8,890
Non taxable	3,546	1,018
Federal funds sold and interest-bearing deposits in banks	685	6,130
Total interest income	138,231	132,942
Interest expense:
Deposits	11,894	22,491
Notes payable & other borrowings	662	2,314
Subordinated debt securities	2,223	1,616
Junior subordinated deferrable interest debentures	1,167	1,946
Total interest expense	15,946	28,367
Net interest income	122,285	104,575
Provision for loan losses	25,570	2,799
Net interest income, after provision for loan losses	96,715	101,776
Noninterest income:
Service charges on deposit accounts	7,032	8,129
Income from insurance activities	7,644	7,016
Net gain on sales of loans	63,531	23,521
Bank card services and interchange fees	10,035	8,692
Realized gain on sale of securities	2,318	0
Investment commissions	1,698	1,710
Fiduciary fees	3,185	2,306
Other	6,160	5,259
Total noninterest income	101,603	56,633
Noninterest expense:
Salaries and employee benefits	89,220	75,392
Occupancy and equipment, net	14,658	13,572
Professional services	6,322	7,334
Marketing and development	3,088	3,017
IT and data services	3,574	2,830
Bank card expenses	4,253	3,346
Appraisal expenses	2,782	1,625
Other	17,818	14,592
Total noninterest expense	141,715	121,708
Income before income taxes	56,603	36,701
Income tax expense	11,250	7,481
Net income	$ 45,353	$ 29,220
Earnings per share:
Basic (in dollars per share)	$ 2.51	$ 1.74
Diluted (in dollars per share)	$ 2.47	$ 1.71
Net income	$ 45,353	$ 29,220
Other comprehensive income:
Change in net unrealized gain (loss) on securities available for sale	28,193	4,025
Change in net gain (loss) on cash flow hedges	(76)	0
Reclassification adjustment for (gain) loss included in net income	(2,318)	28
Tax effect	(5,418)	(852)
Other comprehensive income	20,381	3,201
Comprehensive income	$ 65,734	$ 32,421

CONSOLIDATED STATEMENTS OF CHAN

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Less: ESOP Owned Shares [Member]	Total	Cumulative Effect, Period of Adoption, Adjustment [Member]Common Stock [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]Additional Paid-in Capital [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]Retained Earnings [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]Accumulated Other Comprehensive Income (Loss) [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]Less: ESOP Owned Shares [Member]	Cumulative Effect, Period of Adoption, Adjustment [Member]
Balance at Dec. 31, 2018	$ 14,772	$ 80,412	$ 119,834	$ (2,243)	$ (58,195)	$ 154,580
Balance (in shares) at Dec. 31, 2018	14,771,520
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock, net	$ 3,207	48,185	0	0	0	51,392
Issuance of common stock, net (in shares)	3,207,000
Net income	$ 0	0	29,220	0	0	29,220
Cash dividends, common	0	0	(1,079)	0	0	(1,079)
Other comprehensive income, (net of tax)	0	0	0	3,201	0	3,201
Terminated ESOP put option	0	0	0	0	58,195	58,195
Exercise of employee stock options, net of shares for cashless exercise and net of shares for taxes	$ 57	(408)	0	0	0	(351)
Exercise of employee stock options, net of shares for cashless exercise and net of shares for taxes (in shares)	57,595
Stock-based compensation	$ 0	853	0	0	0	853
Share-based liability awards modified to equity awards	0	11,450	0	0	0	11,450
Balance at Dec. 31, 2019	$ 18,036	140,492	146,696	958	0	306,182	$ 0	$ 0	$ (1,279)	$ 0	$ 0	$ (1,279)
Balance (in shares) at Dec. 31, 2019	18,036,115
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	$ 0	0	45,353	0	0	45,353
Cash dividends, common	0	0	(2,528)	0	0	(2,528)
Other comprehensive income, (net of tax)	0	0	0	20,381	0	20,381
Exercise of employee stock options, net of shares for cashless exercise and net of shares for taxes	$ 59	(378)	0	0	0	(319)
Exercise of employee stock options, net of shares for cashless exercise and net of shares for taxes (in shares)	59,284
Repurchases of common stock	$ (19)	(274)	0	0	0	(293)
Repurchases of common stock (in shares)	(19,035)
Stock-based compensation	$ 0	1,272	0	0	0	1,272
Balance at Dec. 31, 2020	$ 18,076	$ 141,112	$ 189,521	$ 21,339	$ 0	$ 370,048
Balance (in shares) at Dec. 31, 2020	18,076,364

CONSOLIDATED STATEMENTS OF CH_2

CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
CONSOLIDATED STATEMENTS OF CHANGES IN STOCKHOLDERS' EQUITY [Abstract]
Cash dividends, common (in dollars per share)	$ 0.14	$ 0.06
Exercise of employee stock options, shares for cashless exercise (in shares)	69,855	111,011
Exercise of employee stock options, shares for taxes (in shares)	17,762	18,894

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net income	$ 45,353	$ 29,220
Adjustments to reconcile net income to net cash from operating activities:
Provision for loan losses	25,570	2,799
Depreciation and amortization	6,575	5,225
Accretion and amortization	3,166	252
Other (gains) losses, net	(2,539)	40
Net gain on sales of loans	(63,531)	(23,521)
Proceeds from sales of loans held for sale	1,434,173	652,216
Loans originated for sale	(1,442,913)	(640,680)
Earnings on bank-owned life insurance	(1,334)	(1,293)
Stock based compensation	1,272	853
Change in valuation of mortgage servicing rights	2,834	548
Net change in:
Accrued interest receivable and other assets	(4,610)	321
Accrued expenses and other liabilities	1,611	4,504
Net cash from operating activities	5,627	30,484
Activity in securities available for sale:
Purchases	(279,727)	(489,032)
Sales	94,514	52,495
Maturities, prepayments, and calls	114,850	139,255
Loan originations and principal collections, net	(84,991)	5,572
Cash paid for acquisition	(687)	0
Net cash received in business combinations	0	78,171
Goodwill adjustment related to litigation settlement	460	0
Purchases of premises and equipment, net	(3,310)	(3,997)
Proceeds from sales of premises and equipment	222	208
Proceeds from sales of foreclosed assets	2,441	3,835
Net cash from investing activities	(156,228)	(213,493)
Cash flows from financing activities:
Net change in deposits	277,494	33,227
Net change in short-term borrowings	(10,615)	19,460
Proceeds from common stock issuance, net	0	51,392
Proceeds from subordinated debt issuance, net	49,070	0
Payments to tax authorities for stock-based compensation	(319)	(351)
Proceeds from notes payable and other borrowings	75,000	0
Payments made on notes payable and other borrowings	(95,000)	(7,530)
Cash dividends on common stock	(2,528)	(1,079)
Payments to repurchase common stock	(293)	0
Net cash from financing activities	292,809	95,119
Net change in cash and cash equivalents	142,208	(87,890)
Beginning cash and cash equivalents	158,099	245,989
Ending cash and cash equivalents	300,307	158,099
Supplemental disclosures of cash flow information:
Interest paid on deposits and borrowed funds	16,116	28,125
Income taxes paid	13,513	6,474
Supplemental schedule of noncash activities:
Loans transferred to foreclosed assets	1,867	2,452
Business combination measurement period adjustment	1,211	0
Additions to mortgage servicing rights	$ 9,829	$ 1,332

SUMMARY OF SIGNIFICANT ACCOUNTI

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	12 Months Ended
	Dec. 31, 2020
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	1. SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Nature of Operations Wholly Owned, Consolidated Subsidiaries: City Bank Bank subsidiary Windmark Insurance Agency, Inc. Non-bank subsidiary Ruidoso Retail, Inc. Non-bank subsidiary CB Provence, LLC Non-bank subsidiary CBT Brushy Creek, LLC Non-bank subsidiary CBT Properties, LLC Non-bank subsidiary Wholly Owned, Equity Method Subsidiaries: South Plains Financial Capital Trusts (SPFCT) III-V Non-bank subsidiaries Basis of Presentation and Consolidation The Company’s CFS are prepared and presented in accordance with generally accepted accounting principles (“GAAP”) in the U.S. Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) The Company evaluated subsequent events for potential recognition and/or disclosure through the date the CFS were available to be issued. Use of Estimates Change in Capital Structure The Company completed a 29-to-1 stock split of the Company’s outstanding shares of common stock for shareholders of record as of March 11, 2019. The stock split was payable in the form of a dividend on or about March 11, 2019. Shareholders received 29 additional shares for each share held as of the record date. All share and per share amounts in the CFS have been retroactively adjusted to reflect this stock split for all periods presented. Stock Offering Concentration of Credit Risk Risks and Uncertainties Comprehensive Income Cash and Cash Equivalents Securities When the fair value of a security is below its amortized cost, additional analysis is performed to determine whether an other-than-temporary impairment condition exists. The analysis considers (i) whether there is intent to sell securities prior to recovery and/or maturity, (ii) whether it is more likely than not that securities will have to be sold prior to recovery and/or maturity, and (iii) whether there is a credit loss component to the impairment. Often, the information available to conduct these assessments is limited and rapidly changing, making estimates of fair value subject to judgment. If actual information or conditions are different than estimated, the extent of the impairment of a security may be different than previously estimated, which could have a material effect on the Company’s results of operations and financial condition. Nonmarketable Equity Securities Loans Loans are placed on nonaccrual status when, in management’s opinion, collection of interest is unlikely, which typically occurs when principal or interest payments are more than ninety days past due. When interest accrual is discontinued, all unpaid accrued interest is reversed against interest income. The interest on these loans is accounted for on the cash-basis or cost-recovery method, until qualifying for return to accrual. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured. Allowance for Loan Losses The allowance for loan losses is evaluated on a quarterly basis by management and is based upon management’s review of the collectability of the loans in light of historical experience, the nature and volume of the loan portfolio, adverse situations that may affect the borrower’s ability to repay, estimated value of any underlying collateral, and prevailing economic conditions. This evaluation is inherently subjective, as it requires estimates that are susceptible to significant revision as more information becomes available. The determination of the adequacy of the allowance for loan losses is based on estimates that are particularly susceptible to significant changes in the economic environment and market conditions. In connection with the determination of the estimated losses on loans, management obtains independent appraisals for significant collateral. Loans originated by the bank subsidiary are generally secured by specific items of collateral including real property, crops, livestock, consumer assets, and other business assets. While management uses available information to recognize losses on loans, further reductions in the carrying amounts of loans may be necessary based on various factors. In addition, regulatory agencies, as an integral part of their examination process, periodically review the estimated losses on loans. Such agencies may require the bank subsidiary to recognize additional losses based on their judgments about information available to them at the time of their examination. Because of these factors, it is reasonably possible that the estimated losses on loans may change materially in the near term. However, the amount of the change that is reasonably possible cannot be estimated. A loan is considered impaired when, based on current information and events, it is probable that the Company will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. All loans rated substandard or worse and greater than $250,000 are specifically reviewed to determine if they are impaired. Factors considered by management in determining whether a loan is impaired include payment status and the sources, amounts, and probabilities of estimated cash flow available to service debt in relation to amounts due according to contractual terms. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower’s prior payment record, and the amount of the shortfall in relation to the principal and interest owed. Loans that are determined to be impaired are then evaluated to determine estimated impairment, if any. GAAP allows impairment to be measured on a loan-by-loan basis by either the present value of expected future cash flows discounted at the loan’s effective interest rate, the loan’s obtainable market price, or the fair value of the collateral if the loan is collateral dependent. Loans that are not individually determined to be impaired or are not subject to the specific review of impaired status are subject to the general valuation allowance portion of the allowance for loan loss. The Company may modify its loan agreement with a borrower. The modification will be considered a troubled debt restructuring if the following criteria are met: (1) the borrower is experiencing a financial difficulty and (2) the Company makes a concession that it would not otherwise make. Concessions may include debt forgiveness, interest rate change, or maturity extension. Each of these loans is impaired and is evaluated for impairment, with a specific reserve recorded as necessary based on probable losses related to collateral and cash flow. A loan will no longer be required to be reported as restructured in calendar years following the restructure if the interest rate at the time of restructure is greater than or equal to the rate the Company was willing to accept for a new extension of credit with similar risk and the loan is in compliance with its modified terms. Acquired Loans The excess of cash flows expected at acquisition over the estimated fair value is referred to as the accretable discount and is recognized into interest income over the remaining life of the loan. The difference between contractually required payments at acquisition and the cash flows expected to be collected at acquisition is referred to as the nonaccretable discount. These loans are accounted for under ASC 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality. Loans acquired through business combinations that meet the specific criteria of ASC 310-30 are individually evaluated each period to analyze expected cash flows. To the extent that the expected cash flows of a loan have decreased due to credit deterioration, the Company then establishes an allowance. Loans acquired through business combinations that do not meet the specific criteria of ASC 310-30 are accounted for under ASC 310-20. These loans are initially recorded at fair value, and include credit and interest rate marks associated with acquisition accounting adjustments. Purchase premiums or discounts are subsequently amortized as an adjustment to yield over the estimated contractual lives of the loans. There is no allowance for loan losses established at the acquisition date for acquired performing loans. An allowance for loan losses is recorded for any credit deterioration in these loans subsequent to acquisition. Acquired loans that met the criteria for impaired or nonaccrual of interest prior to the acquisition may be considered performing upon acquisition, regardless of whether the customer is contractually delinquent, if the Company expects to fully collect the new carrying value (i.e. fair value) of the loans. As such, the Company may no longer consider the loan to be nonaccrual or nonperforming at the date of acquisition and may accrue interest on these loans, including the impact of any accretable discount. In addition, charge-offs on such loans would be first applied to the nonaccretable difference portion of the fair value adjustment. Mortgage Servicing Rights Under the fair value measurement method, the Company measures servicing rights at fair value at each reporting date and reports change in fair value of servicing assets in earnings in the period in which the changes occur, and are included with other noninterest income on the CFS. The fair values of servicing rights are subject to significant fluctuations as a result of changes in estimated and actual prepayment speeds and default rates and losses. Servicing fee income, which is reported on the CFS as other noninterest income, is recorded for fees earned for servicing loans. The fees are based on a contractual percentage of the outstanding principal; or a fixed amount per loan as recorded when income is earned. Servicing income was immaterial for the years ended December 31, 2020 and 2019. Transfers of Financial Assets Loans Held for Sale Premises and Equipment Foreclosed Assets Bank-Owned Life Insurance Goodwill and Other Intangible Assets Core deposit intangible (“CDI”) is a measure of the value of checking and savings deposit relationships acquired in a business combination. The fair value of the CDI stemming from any given business combination is based on the present value of the expected cost savings attributable to the core deposit funding relative to an alternative source of funding. CDI is amortized over the estimated useful lives of the existing deposit relationships acquired, but does not exceed 10 years. Significantly all CDI is amortized using the sum of the years’ digits method. The remaining other intangible assets consist of customer relationship and employment agreement intangible assets and are amortized over their estimated useful lives of 5 years. The economic disruption and uncertainty surrounding the ongoing COVID-19 pandemic and the recent volatility in the market price of crude oil resulted in a decrease in the Company’s stock price. The Company believed this resulted in a triggering event and required an interim goodwill impairment quantitative analysis at March 31, 2020. Under the new simplified guidance, the Company’s estimated fair value as of March 31, 2020 exceeded its carrying amount, resulting in no impairment charge for the period. Management continued to evaluate the economic conditions at all subsequent reporting periods. Mortgage Banking Derivatives In order to hedge the change in interest rates resulting from the commitments to fund the loans that will be sold through a best efforts contract, the Company enters into forward loans sales commitments for the future delivery of mortgage loans when interest rate locks are entered. At inception, these interest rate locks and the related forward loan sales commitments, adjusted for the expected exercise of the commitment before the loan is funded, are recorded with a zero value. Subsequent changes in fair value are estimated based on changes in mortgage interest rates from the date the interest on the loan is locked. In order to hedge the change in interest rates resulting from all other mortgage commitments to funds loans, the Company enters into forward sales of mortgage-backed securities contracts. At inception, these interest rate locks are recorded at fair value and are adjusted for the expected exercise of the commitment before the loan is funded. Subsequent changes in fair value are estimated based on changes in mortgage interest rates from the date the interest on the loan is locked. Changes in the fair values of these derivatives are included in net gain on sales of loans in the CFS. Derivatives Net cash settlements on derivatives that qualify for hedge accounting are recorded in interest income or interest expense, based on the item being hedged. Net cash settlements on derivatives that do not qualify for hedge accounting are reported in noninterest income. Cash flows on hedges are classified in the cash flow statement the same as the cash flows of the items being hedged. The Company formally documents the relationship between derivatives and hedged items, as well as the risk-management objective and the strategy for undertaking hedge transactions at the inception of the hedging relationship. This documentation includes linking fair value or cash flow hedges to specific assets and liabilities on the balance sheet or to specific firm commitments or forecasted transactions. The Company also formally assesses, both at the hedge’s inception and on an ongoing basis, whether the derivative instruments that are used are highly effective in offsetting changes in fair values or cash flows of the hedged items. The Company discontinues hedge accounting when it determines that the derivative is no longer effective in offsetting changes in the fair value or cash flows of the hedged item, the derivative is settled or terminates, a hedged forecasted transaction is no longer probable, a hedged firm commitment is no longer firm, or treatment of the derivative as a hedge is no longer appropriate or intended. When hedge accounting is discontinued, subsequent changes in fair value of the derivative are recorded as noninterest income. When a fair value hedge is discontinued, the hedged asset or liability is no longer adjusted for changes in fair value and the existing basis adjustment is amortized or accreted over the remaining life of the asset or liability. When a cash flow hedge is discontinued but the hedged cash flows or forecasted transactions are still expected to occur, gains or losses that were accumulated in other comprehensive income are amortized into earnings over the same periods which the hedged transactions will affect earnings. Revenue Recognition – ASU 2014-09 Revenue from Contracts with Customers (Topic 606) The majority of the Company’s revenues come from interest income and other sources, including loans, securities and derivatives, that are outside the scope of ASC 606. The Company’s services that fall within the scope of Topic 606 are presented within Noninterest Income and are recognized as revenue as the Company satisfies its obligation to the customer. Services within the scope of Topic 606 include service charges on deposit accounts, bank card services and interchange fees, investment commissions, fiduciary fees, and the sale of OREO. However, the recognition of these revenue streams did not change significantly upon the adoption of Topic 606. Substantially all of the Company’s revenue is generated from contracts with customers. Noninterest income streams within the scope of Topic 606 are discussed below. Service Charges on Deposit Accounts The Company earns fees from its deposit customers for transaction-based, account maintenance, and overdraft services. Transaction-based fees, which include services such as stop payment charges, statement rendering, and ACH fees, are recognized at the time the transaction is executed as that is the point in time the Company fulfills the customer’s request. Account maintenance fees, which relate primarily to monthly maintenance, are earned over the course of a month, representing the period over which the Company satisfies the performance obligation. Overdraft fees are recognized at the point in time that the overdraft occurs. Service charges on deposits are withdrawn from the customer’s account balance. Bank Card Services and Interchange Fees The Company earns bank card service and interchange fees from debit and credit cardholder transactions conducted through card payment networks. Interchange fees from cardholder transactions represent a percentage of the underlying transaction value and are recognized daily, concurrently with the transaction processing services provided to the cardholder. Bank card services income mainly represents fees charged to merchants to process their debit and credit card transactions, in addition to account management fees and service fees such as ATM use fees and are recognized at the time the transaction is executed. Investment Commissions and Fiduciary Trust Fees The Company earns investment commissions and fiduciary trust fees from its contracts with trust customers to manage assets for investment, and/or to transact on their accounts. These fees are primarily earned over time as the Company provides the contracted monthly or quarterly services and are generally assessed based on a tiered scale of the market value of assets under management (AUM) at month-end. Fees that are transaction based, including trade execution services, are recognized at the point in time that the transaction is executed, i.e., the trade date. Other related services provided include financial planning services and the fees the Company earns, which are based on a fixed fee schedule, are recognized when the services are rendered. In addition, certain trust customers have contracted with the Company to provide trust dissolution services, which are based on a unitary management fee treated as a single performance obligation. The Company’s performance obligation is satisfied over time based on the customer simultaneously receiving and consuming the benefits of the Company’s service. The unitary management fee is treated as variable consideration and is evaluated and included in the transaction price at the end of each reporting period (quarterly). Revenue is recognized based on a reasonable time based measure of progress towards the Company’s complete satisfaction of the performance obligation at the end of each respective reporting period, with the unearned amount based on progress measure being included in deferred contract liability. This variable consideration and the amount of revenue recognized is evaluated quarterly until the Company has entirely fulfilled its performance obligation, at which time the remaining unearned revenue is recognized. Gains/Losses on Sales of OREO The Company records a gain or loss from the sale of OREO when control of the property transfers to the buyer, which generally occurs at the time of an executed deed. When the Company finances the sale of OREO to the buyer, the Company assesses whether the buyer is committed to perform their obligations under the contract and whether collectability of the transaction price is probable. Once these criteria are met, the OREO asset is derecognized and the gain or loss on sale is recorded upon the transfer of control of the property to the buyer. In determining the gain or loss on the sale, the Company adjusts the transaction price and related gain (loss) on sale if a significant financing component is present. Contract Balances A contract asset balance occurs when an entity performs a service for a customer before the customer pays consideration (resulting in a contract receivable) or before payment is due (resulting in a contract asset). A contract liability balance is an entity’s obligation to transfer a service to a customer for which the entity has already received payment (or payment is due) from the customer. The Company’s noninterest revenue streams are largely based on transactional activity, or standard month-end revenue accruals. Consideration is often received immediately or shortly after the Company satisfies its performance obligation and revenue is recognized. The Company does not typically enter into long-term revenue contracts with customers, and therefore, does not experience significant contract balances. The Company did not have any significant contract balances at December 31, 2020 and 2019. Contract Acquisition Costs In connection with the adoption of Topic 606, an entity is required to capitalize, and subsequently amortize into expense, certain incremental costs of obtaining a contract with a customer if these costs are expected to be recovered. The incremental costs of obtaining a contract are those costs that an entity incurs to obtain a contract with a customer that it would not have incurred if the contract had not been obtained (for example, sales commission). The Company utilizes the practical expedient which allows entities to immediately expense contract acquisition costs when the asset that would have resulted from capitalizing these costs would have been amortized in one year or less. Upon adoption of Topic 606, the Company did not capitalize any contract acquisition cost. Insurance Activities The Company’s primary source of revenues for insurance activities are commissions from underwriting enterprises, based on a percentage of premiums paid by clients. These commissions and fees revenues are substantially recognized at a point in time on the effective date of the associated policies when control of the policy transfers to the client. Commissions are fixed at the contract effective date and generally are based on a percentage of premiums for insurance coverage. Commissions depend upon a large number of factors, including the type of risk being placed, the particular underwriting enterprise’s demand, the expected loss experience of the particular risk of coverage, and historical benchmarks surrounding the level of effort necessary for us to place and service the insurance contract. Stock-Based Compensation Advertising Income Taxes A tax position is recognized as a benefit only if it is “more likely than not” that the tax position would be sustained in a tax examination, with a tax examination being presumed to occur. The amount recognized is the largest amount of tax benefit that is greater than 50% likely of being realized on examination. For tax positions not meeting the “more likely than not” test, no tax benefit is recorded. The State of Texas franchise tax is an income tax for financial reporting purposes under GAAP and the Company and its subsidiaries are subject to the modified tax as a combined group. Earnings per Share Fair Values of Financial Instruments Trust Assets Segment Information Reclassification Change in Accounting Principle Recent Accounting Pronouncements Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) ASU 2021-01, Reference Rate Reform (Topic 848) ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting. ASU 2019-12, Income Taxes, Simplifying the Accounting for Income Taxes (Topic 740). ASU 2017-04, Intangibles - Goodwill and Other (Topic 350). ASU 2016-13 Financial Instruments - Credit Losses (Topic 326). ASU 2016-02 Leases (Topic 842).

SECURITIES

SECURITIES	12 Months Ended
	Dec. 31, 2020
SECURITIES [Abstract]
SECURITIES	2. SECURITIES The amortized cost and fair value of securities, with gross unrealized gains and losses, at year-end follow: Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value 2020 Available for sale: U.S. government and agencies $ 4,750 $ 3 $ — $ 4,753 State and municipal 261,023 11,704 (120 ) 272,607 Mortgage-backed securities 359,542 14,014 (194 ) 373,362 Collateralized mortgage obligations 107,175 — (460 ) 106,715 Asset-backed and other amortizing securities 31,509 2,063 — 33,572 Other securities 12,000 91 (13 ) 12,078 $ 775,999 $ 27,875 $ (787 ) $ 803,087 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value 2019 Available for sale: U.S. government and agencies $ 4,750 $ 57 $ — $ 4,807 State and municipal 94,512 1,091 (911 ) 94,692 Mortgage-backed securities 463,899 3,727 (3,110 ) 464,516 Collateralized mortgage obligations 107,443 15 (169 ) 107,289 Asset-backed and other amortizing securities 35,833 522 (9 ) 36,346 $ 706,437 $ 5,412 $ (4,199 ) $ 707,650 The amortized cost and fair value of securities at December 31, 2020 are presented below by contractual maturity. Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations. Other securities are shown separately since they are not due at a single maturity date. Available for Sale Amortized Cost Fair Value Within 1 year $ 6,731 $ 6,761 After 1 year through 5 years 3,398 3,585 After 5 years through 10 years 26,079 26,959 After 10 years 241,565 252,133 Other 498,226 513,649 $ 775,999 $ 803,087 At year-end 2020 and 2019, there were no holdings of securities of any one issuer, other than the U.S. Government and its agencies, in an amount greater than 10% of stockholders’ equity. Securities with a carrying value of approximately $292.2 million and $211.3 million at December 31, 2020 and 2019, respectively, were pledged to collateralize public deposits and for other purposes as required or permitted by law. The following table segregates securities with unrealized losses at year-end, by the period they have been in a loss position: Less than 12 Months 12 Months or More Total Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss 2020 U.S. government and agencies $ — $ — $ — $ — $ — $ — State and municipal — 120 — — — 120 Mortgage-backed securities 93,482 194 — — 93,482 194 Collateralized mortgage obligations 106,715 460 — — 106,715 460 Asset-backed and other amortizing securities 3,486 — — — 3,486 — Other securities — 13 — — — 13 $ 203,683 $ 787 $ — $ — $ 203,683 $ 787 2019 U.S. government and agencies $ – $ – $ — $ — $ – $ – State and municipal 58,389 910 387 1 58,776 911 Mortgage-backed securities 284,120 3,071 4,661 40 288,781 3,111 Collateralized mortgage obligations 60,039 168 — — 60,039 168 Asset-backed and other amortizing securities 2,661 9 — — 2,661 9 $ 405,209 $ 4,158 $ 5,048 $ 41 $ 410,257 $ 4,199 There were 11 securities with an unrealized loss at December 31, 2020. Management does not believe that these losses are other than temporary as there is no intent to sell any of these securities before recovery and it is not probable that we will be required to sell any of these securities before recovery, and credit loss, if any, is not material. Any unrealized losses are largely 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 if market yields for such investments decline. Management does not believe any of the securities are impaired due to reasons of credit quality. Accordingly, as of December 31, 2020, management believes the impairments detailed in the table above are temporary and no impairment loss has been realized in the Company’s CFS.

LOANS HELD FOR INVESTMENT

LOANS HELD FOR INVESTMENT	12 Months Ended
	Dec. 31, 2020
LOANS HELD FOR INVESTMENT [Abstract]
LOANS HELD FOR INVESTMENT	3. LOANS HELD FOR INVESTMENT Loans are summarized by category at year-end as follows: 2020 2019 Commercial real estate $ 663,344 $ 658,195 Commercial - specialized 311,686 309,505 Commercial - general 518,309 441,398 Consumer: 1-4 family residential 360,315 362,796 Auto loans 205,840 215,209 Other consumer 67,595 74,000 Construction 94,494 82,520 2,221,583 2,143,623 Allowance for loan losses (45,553 ) (24,197 ) Loans, net $ 2,176,030 $ 2,119,426 The Company has certain lending policies, underwriting standards, and procedures in place that are designed to maximize loan income with an acceptable level of risk. Management reviews and approves these policies, underwriting standards, and procedures on a regular basis and makes changes as appropriate. Management receives frequent reports related to loan originations, quality, concentrations, delinquencies, non-performing, and potential problem loans. Diversification in the loan portfolio is a means of managing risk associated with fluctuations in economic conditions, both by type of loan and geography. Commercial – General and Specialized Commercial Real Estate Construction Consumer The allowance for loan losses was $45.6 million at December 31, 2020, compared to $24.2 million at December 31, 2019. The allowance for loan losses to loans held for investment was 2.05% at December 31, 2020 and 1.13% at December 31, 2019. The increase in the allowance for loan losses at December 31, 2020 compared to December 31, 2019 is a result of economic effects from the ongoing COVID-19 pandemic as well as the decline in oil and gas prices that started in the first quarter of 2020. The full extent of the impact of the COVID-19 pandemic on the economy and the Company’s customers is still unknown at this time. Accordingly, additional provisions for loan losses may be necessary in future periods. The following table details the activity in the allowance for loan losses during 2020 and 2019. Allocation of a portion of the allowance to one category of loans does not preclude its availability to absorb losses in other categories. Beginning Balance Provision for Loan Losses Charge-offs Recoveries Ending Balance 2020 Commercial real estate $ 5,049 $ 13,618 $ (7 ) $ 302 $ 18,962 Commercial - specialized 2,287 4,514 (1,162 ) 121 5,760 Commercial - general 9,609 1,219 (1,811 ) 210 9,227 Consumer: 1-4 family residential 2,093 2,478 (56 ) 131 4,646 Auto loans 3,385 1,814 (1,165 ) 192 4,226 Other consumer 1,341 1,300 (1,358 ) 388 1,671 Construction 433 627 — 1 1,061 Total $ 24,197 $ 25,570 $ (5,559 ) $ 1,345 $ 45,553 2019 Commercial real estate $ 5,579 $ (961 ) $ — $ 431 $ 5,049 Commercial - specialized 2,516 2 (355 ) 124 2,287 Commercial - general 8,173 1,209 (306 ) 533 9,609 Consumer: 1-4 family residential 2,249 219 (436 ) 61 2,093 Auto loans 2,994 1,276 (1,067 ) 182 3,385 Other consumer 1,192 969 (1,034 ) 214 1,341 Construction 423 85 (75 ) — 433 Total $ 23,126 $ 2,799 $ (3,273 ) $ 1,545 $ 24,197 The following table shows the Company’s investment in loans disaggregated based on the method of evaluating impairment: Recorded Investment Allowance for Loan Losses Individually Evaluated Collectively Evaluated Individually Evaluated Collectively Evaluated 2020 Commercial real estate $ 6,273 $ 657,071 $ 580 $ 18,382 Commercial - specialized — 311,686 — 5,760 Commercial - general 4,626 513,683 515 8,712 Consumer: 1-4 family residential 2,122 358,193 — 4,646 Auto loans — 205,840 — 4,226 Other consumer — 67,595 — 1,671 Construction — 94,494 — 1,061 Total $ 13,021 $ 2,208,562 $ 1,095 $ 44,458 2019 Commercial - $ 299 $ 657,896 $ — $ 5,049 Commercial - specialized 573 308,932 — 2,287 Commercial - general 1,396 440,002 525 9,084 Consumer: 1-4 family residential 1,899 360,897 — 2,093 Auto loans — 215,209 — 3,385 Other consumer — 74,000 — 1,341 Construction — 82,520 — 433 Total $ 4,167 $ 2,139,456 $ 525 $ 23,672 Impaired loan information at year-end follows: Unpaid Contractual Principal Balance Recorded Investment With No Allowance Recorded Investment With Allowance Total Recorded Investment Related Allowance Average Recorded Investment 2020 Commercial real estate $ 6,273 $ 3,673 $ 2,600 $ 6,273 $ 580 $ 3,666 Commercial -specialized — — — — — 673 Commercial - general 4,626 3,364 1,262 4,626 515 3,400 Consumer: 1-4 family 2,541 2,122 — 2,122 — 2,155 Auto loans — — — — — — Other consumer — — — — — — Construction — — — — — — Total $ 13,440 $ 9,159 $ 3,862 $ 13,021 $ 1,095 $ 9,894 2019 Commercial real estate $ 754 $ 299 $ — $ 299 $ — $ 1,059 Commercial specialized 573 573 — 573 — 1,345 Commercial general 1,839 — 1,396 1,396 525 2,173 Consumer: 1-4 family 2,318 1,899 — 1,899 — 2,187 Auto loans — — — — — — Other consumer — — — — — — Construction — — — — — — Total $ 5,484 $ 2,771 $ 1,396 $ 4,167 $ 525 $ 6,764 All impaired loans $250,000 and greater were specifically evaluated for impairment. Interest income recognized using a cash-basis method on impaired loans for 2020 and 2019 was not significant. Additional funds committed to be advanced on impaired loans are not significant. The table below provides an age analysis on accruing past-due loans and nonaccrual loans at year-end: 30-89 Days Past Due 90 Days or More Past Due Nonaccrual 2020 Commercial real estate $ 914 $ 34 $ 6,311 Commercial - specialized 241 — 272 Commercial - general 1,891 149 5,489 Consumer: 1-4 Family residential 2,089 906 1,595 Auto loans 738 38 — Other consumer 481 119 51 Construction 206 — — Total $ 6,560 $ 1,246 $ 13,718 2019 Commercial real estate $ 37 $ 116 $ 162 Commercial - specialized 708 — 1,172 Commercial - general 1,747 — 2,254 Consumer: 1-4 Family residential 1,212 932 1,105 Auto loans 1,468 183 — Other consumer 848 121 — Construction 1,159 — — Total $ 7,179 $ 1,352 $ 4,693 The Company grades its loans on a thirteen-point grading scale. These grades fit in one of the following categories: (i) pass, (ii) special mention, (iii) substandard, (iv) doubtful, or (v) loss. Loans categorized as loss are charged-off immediately. The grading of loans reflect a judgment about the risks of default associated with the loan. The Company reviews the grades on loans as part of our on-going monitoring of the credit quality of our loan portfolio. Pass loans have financial factors or nature of collateral that are considered reasonable credit risks in the normal course of lending and encompass several grades that are assigned based on varying levels of risk, ranging from credits that are secured by cash or marketable securities, to watch credits which have all the characteristics of an acceptable credit risk but warrant more than the normal level of monitoring. Special mention loans have potential weaknesses that deserve management’s close attention. If left uncorrected, these potential weaknesses may result in deterioration of repayment prospects for the loans at some future date. Substandard loans are inadequately protected by the current net worth and paying capacity of the borrower or by the collateral pledged, if any. These loans have a well-defined weakness or weaknesses that jeopardize collection and present the distinct possibility that some loss will be sustained if the deficiencies are not corrected. A protracted workout on these credits is a distinct possibility. Prompt corrective action is therefore required to strengthen the Company’s position, and/or to reduce exposure and to assure that adequate remedial measures are taken by the borrower. Credit exposure becomes more likely in such credits and a serious evaluation of the secondary support to the credit is performed. Substandard loans can be accruing or can be nonaccrual depending on the circumstances of the individual loans. Doubtful loans have all the weaknesses inherent in substandard loans with the added characteristics that the weaknesses make collection or liquidation in full on the basis of currently existing facts, conditions, and values highly questionable and improbable. All doubtful loans are on nonaccrual. The following table summarizes the internal classifications of loans at year-end: Pass Special Mention Substandard Doubtful Total 2020 Commercial real estate $ 602,250 $ — $ 61,094 $ — $ 663,344 Commercial - specialized 303,831 — 7,855 — 311,686 Commercial - general 510,543 — 7,766 — 518,309 Consumer: 1-4 family residential 352,930 — 7,385 — 360,315 Auto loans 204,301 — 1,539 — 205,840 Other consumer 67,216 — 379 — 67,595 Construction 94,494 — — — 94,494 Total $ 2,135,565 $ — $ 86,018 $ — $ 2,221,583 2019 Commercial real estate $ 632,641 $ 22,313 $ 3,241 $ — $ 658,195 Commercial - specialized 307,239 — 2,266 — 309,505 Commercial - general 428,155 — 13,243 — 441,398 Consumer: 1-4 family residential 356,422 — 6,374 — 362,796 Auto loans 214,363 — 846 — 215,209 Other consumer 73,716 — 284 — 74,000 Construction 82,520 — — — 82,520 Total $ 2,095,056 $ 22,313 $ 26,254 $ — $ 2,143,623 Under section 4013 of the Coronavirus Aid, Relief, and Economic Security Act (the “CARES Act”), banks may elect to deem that loan modifications do not result in a classification as a troubled debt restructuring (“TDR”) if they are (1) related to the COVID-19 pandemic; (2) executed on a loan that was not more than 30 days past due as of December 31, 2019; and (3) executed between March 1, 2020, and the earlier of (A) 60 days after the date of termination of the national emergency or (B) December 31, 2020. Under section 540 of the Consolidated Appropriations Act, 2021 (the “Act”), section 4013 of the CARES Act was amended. The period for loan modifications was extended to the earlier of (1) January 1, 2022, or (2) 60 days after the date of termination of the national emergency. The Company elected to adopt the provisions of the CARES Act and the Act. Additionally, other short-term modifications made on a good faith basis in response to the COVID-19 pandemic to borrowers who were current prior to any relief are not TDRs under ASC Subtopic 310-40 and the interagency statement released by the federal banking regulators on April 7, 2020 in response to the COVID-19 pandemic (the “Joint Interagency Regulatory Guidance”). This includes short-term (e.g., up to six months) modifications such as payment deferrals, fee waivers, extensions of repayment terms, or delays in payment that are insignificant. Borrowers considered current are those that are less than 30 days past due on their contractual payments at the time a modification program is implemented. In response to the COVID-19 pandemic, the Company implemented a short-term deferral modification program that complies with ASC Subtopic 310-40 and the Joint Interagency Regulatory Guidance. As of December 31, 2020, the Company has an outstanding principal balance of modified loans of $3.0 million in loans that comply with ASC Subtopic 310-40 and the Joint Interagency Regulatory Guidance. These modifications include: $1.0 million in six months of interest-only payments, $300 thousand in 90 day commercial payment deferrals, and $1.7 million in consumer one to four month payment deferrals. The total of all of these short-term modifications represented 0.14% of outstanding loans held for investment at December 31, 2020. Beginning in April 2020, the Company began offering additional COVID-19 related deferral and modification of principal and/or interest payments to selected borrowers on a case-by-case basis that were outside the scope of the short-term deferral modification program. These additional modifications comply with the provisions of section 4013 of the CARES Act and section 501 of the Act. As of December 31, 2020 the Company had 25 loans totaling approximately $61.0 million subject to these deferral and modification agreements, representing 2.75% of outstanding loans held for investment. There were no TDRs during 2020 and 2019.

FORECLOSED ASSETS

FORECLOSED ASSETS	12 Months Ended
	Dec. 31, 2020
FORECLOSED ASSETS [Abstract]
FORECLOSED ASSETS	4. FORECLOSED ASSETS Foreclosed assets activity was as follows: 2020 2019 Beginning balance $ 1,883 $ 2,285 Additions 1,867 3,469 Sales, net (2,397 ) (3,871 ) Current year valuation write-down — — Ending balance $ 1,353 $ 1,883 Activity in the valuation allowance was as follows: 2020 2019 Beginning balance $ — $ 325 Current year valuation write-down — — Reductions from sales — (325 ) Ending balance $ — $ — Net expenses related to foreclosed assets include: 2020 2019 Net gain (loss) on sales $ 40 $ (37 ) Current year valuation write-down — — Operating expenses, net of rental income (75 ) (71 ) Foreclosed assets expense, net $ (35 ) $ (108 )

PREMISES AND EQUIPMENT

PREMISES AND EQUIPMENT	12 Months Ended
	Dec. 31, 2020
PREMISES AND EQUIPMENT [Abstract]
PREMISES AND EQUIPMENT	5. PREMISES AND EQUIPMENT Detail of premises and equipment at year-end follows: 2020 2019 Land $ 10,825 $ 10,825 Buildings and improvements 65,840 63,972 Furniture and equipment 46,443 44,460 Construction in process 29 974 123,137 120,231 Less accumulated depreciation (62,806 ) (58,358 ) Premises and equipment, net $ 60,331 $ 61,873 Depreciation expense was approximately $4.8 million in 2020 and $4.9 million in 2019.

GOODWILL AND INTANGIBLES

GOODWILL AND INTANGIBLES	12 Months Ended
	Dec. 31, 2020
GOODWILL AND INTANGIBLES [Abstract]
GOODWILL AND INTANGIBLES	6. GOODWILL AND INTANGIBLES Goodwill and other intangible assets, which consist of CDI, customer lists, and employment agreements are summarized below: 2020 2019 Beginning goodwill $ 18,757 $ — Arising from business combinations — 18,757 Measurement period acquisition adjustment 751 — Ending goodwill $ 19,508 $ 18,757 Amortized intangible assets: Customer relationship intangibles $ 6,679 $ 6,679 Less: Accumulated amortization (1,396 ) (202 ) 5,283 6,477 Other intangibles 2,309 2,309 Arising from business combinations 663 — Less: Accumulated amortization (693 ) (154 ) 2,279 2,155 Other intangible assets, net $ 7,562 $ 8,632 Amortization expense for other intangibles for the years ended December 31, 2020 and December 31, 2019 totaled $1.7 million and $356 thousand, respectively. The estimated amount of amortization expense for core deposit intangible and other intangible assets to be recognized over the next five years is as follows: CDI Other Intangible Total 2021 $ 1,073 $ 594 $ 1,667 2022 951 595 1,546 2023 830 594 1,424 2024 708 441 1,149 2025 587 55 642

MORTGAGE SERVICING RIGHTS

MORTGAGE SERVICING RIGHTS	12 Months Ended
	Dec. 31, 2020
MORTGAGE SERVICING RIGHTS [Abstract]
MORTGAGE SERVICING RIGHTS	7. MORTGAGE SERVICING RIGHTS The following table reflects the changes in fair value of the Company’s mortgage servicing rights asset included in the Consolidated Balance Sheets, and other information related to the serviced portfolio: 2020 2019 Beginning balance $ 2,054 $ 1,270 Additions 9,829 1,332 Valuation adjustment, net of amortization (2,834 ) (548 ) Ending balance $ 9,049 $ 2,054 2020 2019 Mortgage loans serviced for others $ 1,203,687 $ 247,326 Mortgage servicing right asset as a percentage of serviced mortgage loans 1 % 1 % The following table reflects the ’ 2020 2019 Weighted average constant prepayment rate 4.48 % 5.23 % Weighted average discount rate 9.72 % 10.78 % Weighted average life in years 7.00 10.00

DEPOSITS

DEPOSITS	12 Months Ended
	Dec. 31, 2020
DEPOSITS [Abstract]
DEPOSITS	8. DEPOSITS Time deposits that met or exceeded the FDIC Insurance limit of $250,000 were $147.0 million at December 31, 2020 and 2019, respectively. The scheduled maturities of time deposits at December 31, 2020 follows: 2021 $ 187,976 2022 83,077 2023 45,218 2024 6,293 2025 2,927 Thereafter 10 $ 325,501

BORROWING ARRANGEMENTS

BORROWING ARRANGEMENTS	12 Months Ended
	Dec. 31, 2020
BORROWING ARRANGEMENTS [Abstract]
BORROWING ARRANGEMENTS	9. BORROWING ARRANGEMENTS Short-term borrowings The following table summarizes our short-term borrowings at year-end: 2020 2019 Federal funds purchased $ 26,550 $ 17,165 FHLB advances - short-term — 20,000 Total $ 26,550 $ 37,165 Federal funds purchased are short-term borrowings that generally have one-day maturities. Lines of credit The bank subsidiary has a line of credit with FHLB. The amount of the line is determined by FHLB on a quarterly basis. The line is primarily used to purchase Federal funds or to secure letters of credit to pledge as collateral against certain public deposits. The line is collateralized by a blanket floating lien on all first mortgage loans and commercial real estate loans as well as all FHLB stock, which has a carrying amount of $2.8 million at December 31, 2020. The available capacity of the line was $512.5 million and $394.3 million at December 31, 2020 and 2019, respectively. The bank subsidiary also has a line of credit with the Federal Reserve Bank of Dallas (“FRB”). The amount of the line is determined on a monthly basis by FRB. The line is collateralized by a blanket floating lien on all agriculture, commercial, and consumer loans. The amount of the line was $700.8 million and $547.0 million at December 31, 2020 and 2019, respectively. This line was not used at December 31, 2020 or 2019. The bank subsidiary also has uncollateralized lines of credit with multiple banks. The total amount of the lines was $165.0 million and $135.0 million as of December 31, 2020 and 2019, respectively. These lines were not used at December 31, 2020 or 2019. Notes payable and other borrowings The bank subsidiary has multiple advances from FHLB. The advances are collateralized through the line of credit with FHLB with interest payable monthly and principal due at maturity. The following table is a detail of the advances as of December 31: Issue Date Original Amount of Advance 2020 Balance 2019 Balance Maturity Date Interest Rate at December 31, 2020 2013 $ 20,000 $ — $ 20,000 2020 Fixed; 1.50% 2015 25,000 25,000 25,000 2025 Variable; 0.19% 2015 25,000 25,000 25,000 2025 Variable; 0.19% 2015 25,000 25,000 25,000 2025 Variable; 0.23% $ 95,000 $ 75,000 $ 95,000 In April 2020, City Bank borrowed $75 million from FHLB, on a term of three months, for liquidity needs. The three month advance matured in July 2020 and was repaid. Junior subordinated deferrable interest debentures and Trust preferred securities The Company established grantor trusts (“trusts”) that issued obligated mandatorily redeemable preferred securities (“TPS”); the Company issued junior subordinated deferrable interest debentures (debentures) to the trusts. The trusts are not consolidated and the debentures issued by the Company to the trusts are reflected in the Company’s consolidated balance sheets. The Company records interest expense on the debentures in its CFS. The common capital securities issued by the trusts ($1.4 million) are included in other assets in the Company’s consolidated balance sheets under the equity method of accounting. The amount of the capital securities represents the Company’s maximum exposure to loss. The Company is required by the Board of Governors of the Federal Reserve System (“Federal Reserve”) to maintain certain levels of capital for bank regulatory purposes. The debentures issued by the trusts to the Company, less the common capital securities of the trusts, continue to qualify as Tier 1 capital, subject to limitation to 25% of Tier 1 capital, under guidance issued by the Federal Reserve. Although the trusts are not consolidated in these CFS, the TPS remain outstanding with terms substantially the same as the debentures. The Company’s interest payments on its debentures are the sole source of repayment for the TPS. Additionally, the Company guarantees payment of interest and principal on the TPS. The terms of the debentures and TPS allow for interest to be deferred for up to five years consecutively. During this time, shareholder dividends are not allowed to be paid. The following table is a detail of the debentures and TPS at December 31, 2020: Issue Date Amount of TPS Amount of Debentures Stated Maturity Date of TPS and Debentures (1) Interest Rate of TPS and Debentures (2)(3) South Plains Financial Capital Trust III 2004 $ 10,000 $ 10,310 2034 3 -mo. LIBOR + 265bps; 2.86% South Plains Financial Capital Trust IV 2005 20,000 20,619 2035 3 -mo. LIBOR + 139bps; 1.61% South Plains Financial Capital Trust V 2007 15,000 15,464 2037 3 -mo. LIBOR + 150bps; 1.72% Total $ 45,000 $ 46,393 (1) May be redeemed five years from the issue date, the Company has no current plans to redeem; (2) Interest payable quarterly with principal due at maturity; (3) Rate as of last reset date. Subordinated debt securities In December 2018, the Company issued $26.5 million in subordinated debt securities. $12.4 million of the securities have a maturity date of December 2028 and a weighted average fixed rate of 5.74% for the first five years. The remaining $14.1 million of securities have a maturity date of December 2030 and a weighted average fixed rate of 6.41% for the first seven years. After the fixed rate periods, all securities will float at the Wall Street Journal On September 29, 2020, the Company issued $ 50.0 million in subordinated debt securities. Proceeds were reduced by approximately $926 thousand in debt issuance costs. The securities have a maturity date of September 2030 with a fixed rate of 4.50% for the first five years. After the expiration of the fixed rate period, the securities will semi-annually, are unsecured, and may be called by the Company at any time after the remaining maturity is five years or less. Additionally, these securities qualify for Tier 2 capital treatment, subject to regulatory limitations. As of December 31, 2020, the total amount of subordinated debt securities outstanding was $76.5 million less approximately $833,000 of remaining debt issuance costs for a total balance of $75.6 million.

EMPLOYEE BENEFITS

EMPLOYEE BENEFITS	12 Months Ended
	Dec. 31, 2020
EMPLOYEE BENEFITS [Abstract]
EMPLOYEE BENEFITS	10. EMPLOYEE BENEFITS The Company sponsors the South Plains Financial, Inc. Employee Stock Ownership Plan ( ESOP ). Effective May 9, 2019, the ESOP was restated and amended. The 401(k) related assets, which consisted of participants’ elective and rollover accounts, were transferred to the newly formed City Bank 401(k) Plan. The ESOP covers all employees who have completed one month of service. The ESOP may be leveraged to purchase shares of SPFI stock. Shares are released from collateral and allocated to active employees, in proportion to annual debt service. The Company recognizes any debt of the ESOP as notes payable and the shares pledged as collateral are deducted from the stockholders’ equity as unearned ESOP shares in the accompanying consolidated balance sheets. All ESOP shares were allocated as of December 31, 2020 and 2019. Through 2019, the Company made contributions to the ESOP as approved by the Board of Directors on an annual basis. These contributions, plus dividends received, are used to service any ESOP debt and repurchase allocated shares from participants and terminating vested participants. There were no Company contributions made to the ESOP in 2020, contributions to the ESOP were $1.8 million in 2019. As of December 31, 2020 and 2019, the number of shares held by the ESOP were 2,876,419 and 2,959,826, respectively. During 2019, the Company did not repurchase any shares from ESOP participants prior to the Company’s shares being publicly traded. In accordance with applicable provisions of Code, the terms of the ESOP, for so long as SPFI was a privately held company, ESOP participants would have the right, for a specified period of time, to require SPFI to repurchase shares of its common stock that were distributed to such participants by the ESOP. This repurchase obligation terminated upon the consummation of our initial public offering and listing of our common stock on the NASDAQ Global Select Market in May 2019. However, because we were privately held at December 31, 2018, the value of ESOP- owned shares have been deducted from stockholders’ equity in our consolidated changes in stockholders’ equity statement as of December 31, 2018. For all periods following our initial public offering and continued listing of our common stock on the NASDAQ Global Select Market, the ESOP-owned shares are and will be included in stockholders’ equity. At December 31, 2018, the fair value of all ESOP-owned shares subject to this repurchase obligation totaled $58.2 million. Under the provisions of the 401(k) Plan, participants may elect to contribute pre-tax salary deferrals and direct investment of those salary deferrals among investments offered in the 401(k) Plan. The Company may elect to contribute a safe harbor match equal to 100% of the first 5% of the participants’ compensation contributed. The expense for Company contributions to the 401(k) Plan was $ 1.7 million in 2020 . Employee Health Benefits Non-Qualified Plans Certain Company executives, as determined by the Company’s Board from time-to-time, have post-retirement salary continuation agreements under an Executive Salary Continuation Plan. Retirement ages and retirement salary amounts are specified in each agreement. The Company accrues actuarial estimates of the costs of these benefits over the respective service periods; approximately $12.1 million and $11.4 million was accrued at December 31, 2020 and 2019, respectively. This plan is nonqualified, noncontributory, and unfunded. The charge to income for this plan during 2020 and 2019 was approximately $1.1 million and $1.1 million, respectively.

STOCK-BASED COMPENSATION

STOCK-BASED COMPENSATION	12 Months Ended
	Dec. 31, 2020
STOCK-BASED COMPENSATION [Abstract]
STOCK-BASED COMPENSATION	11. STOCK-BASED COMPENSATION Equity Incentive Plan The 2019 Equity Incentive Plan (“Plan”) was approved by the Company’s Board of Directors on January 16, 2019 and by its shareholders on March 6, 2019. The purpose of the Plan is to: (i) attract and retain the best available personnel for positions of substantial responsibility, (ii) provide additional incentive to employees, directors and consultants, and (iii) promote the success of the Company’s business. This Plan permits the grant of incentive stock options, nonstatutory stock options, stock appreciation rights, restricted stock, restricted stock units, performance units, performance shares, and other stock-based awards. The maximum aggregate number of shares of common stock that may be issued pursuant to all awards under the Plan was 2,841,083 at December 31, 2020. The maximum aggregate number of shares that may be issued under the Plan may be increased annually by up to 3% of the total issued and outstanding common shares of the Company at the beginning of each fiscal year. The fair value of each option award is estimated on the date of grant using a closed form option valuation (“Black-Scholes”) model that uses the assumptions noted in the table below. Expected volatilities are based on historical volatilities of the Company’s common stock and similar peer company averages. The Company uses historical data to estimate option exercise and post-vesting termination behavior. The expected term of options granted represents the period of time that options granted are expected to be outstanding, which takes in to account that the options are not transferable. The risk-free interest rate for the expected term of the option is based on U.S. Treasury yield curve in effect at the time of the grant. Options A summary of activity in the Plan during the year ended December 31, 2020 is presented in the table below: Number of Shares Weighted-Average Exercise Price Weighted-Average Remaining Contractual Life in Years Aggregate Intrinsic Value Year Ended December 31, 2020 Outstanding at beginning of year: 1,462,997 $ 13.42 $ 8,212 Granted 248,966 20.93 — Exercised (122,207 ) 10.33 (1,053 ) Forfeited (33,727 ) 17.83 (49 ) Expired (1,135 ) 16.00 (3 ) Balance, December 31, 2020 1,554,894 $ 14.77 5.97 $ 7,107 Exercisable at end of period 986,088 $ 12.39 5.24 $ 6,517 Vested at end of period 986,088 $ 12.39 5.24 $ 6,517 A summary of assumptions used to calculate the fair values of the awards is presented below: December 31, 2020 2019 Expected volatility 27.46 % 24.88% to 31.54% Expected dividend yield 0.70 % 0.70 % Expected term (years) 6.2 years 0.5 - 7.0 years Risk-free interest rate 1.44 % 1.46% to 2.63% Weighted average grant date fair value $ 5.68 $ 7.98 The total intrinsic value of options exercised during the years ended December 31, 2020 and December 31, 2019 was $1.1 million and $1.4 million, respectively. On January 16, 2019, the Company approved the conversion of its previously issued SARs to stock options. There were 1,401,000 outstanding SARs that were converted effective as of May 6, 2019, which are included in the tables above. The fair value of the SARs was $11.5 million at the conversion date. During the modification of these awards from liabilities to equity, the Company accelerated the expiration date, between two and four years, on 750 thousand of the stock options. As a result, the fair value of the stock options after modification was $11.2 million. However, since the fair value of the new equity awards was less than the fair value of the liability awards, no adjustment was made to the Company’s income statement. The $11.5 million was reclassified from liabilities to equity. Restricted Stock Awards and Units A summary of activity in the Plan during the year ended December 31, 2020 is presented in the table below: Number of Shares Weighted-Average Grant Date Fair Value Year Ended December 31, 2020 Outstanding at beginning of year: 81,200 $ 19.46 Granted 5,970 20.93 Exercised (24,694 ) 19.79 Forfeited — — Balance, December 31, 2020 62,476 $ 19.47 Restricted stock units granted under the Plan typically vest over four years, but vesting periods may vary. Compensation expense for these grants will be recognized over the vesting period of the awards based on the fair value of the stock at the issue date. For the years ended December 31, 2020 and December 31, 2019 the Company recorded stock-based compensation expense related to the Plan of $1.3 million and $853 thousand, respectively. The total unrecognized compensation cost for the awards outstanding under the Plan at December 31, 2020 was $3.0 million and will be recognized over a weighted average remaining period of 1.70 years. The total fair value of restricted stock units vested during the year ended December 31, 2020 was $489 thousand. There was no vesting of restricted stock units during the year ended December 31, 2019.

INCOME TAXES

INCOME TAXES	12 Months Ended
	Dec. 31, 2020
INCOME TAXES [Abstract]
INCOME TAXES	12. INCOME TAXES The components of income tax expense (benefit) was as follows: Years Ended December 31, 2020 2019 Current expense Federal $ 12,590 $ 6,923 State 248 224 Deferred expense Federal (1,588 ) 334 Total $ 11,250 $ 7,481 Effective tax rates differ from the federal statutory rate of 21% applied to income before income taxes due to the following: Years Ended December 31, 2020 2019 Federal statutory rate times financial statement income $ 11,887 $ 7,707 Effect of: Tax-exempt income (863 ) (348 ) State taxes, net of federal benefit 196 177 Earnings from bank owned life insurance (280 ) (272 ) Non-deductible expenses 248 190 Other, net 62 27 Total $ 11,250 $ 7,481 Year-end deferred tax assets and liabilities were due to the following: December 31, 2020 2019 Deferred tax assets Allowance for loan loss $ 9,566 $ 5,081 Deferred compensation 5,215 4,669 Other real estate owned 251 251 Nonaccrual loans 59 180 Other 221 162 Total deferred tax assets 15,312 10,343 Deferred tax liabilities Depreciation (2,432 ) (2,417 ) Intangibles (847 ) (924 ) Prepaid expenses (439 ) (419 ) Mortgage servicing rights (1,900 ) (431 ) Unrealized gain on available-for-sale securities (5,688 ) (255 ) Other (1,545 ) (278 ) Total deferred tax liabilities (12,851 ) (4,724 ) Net deferred tax asset $ 2,461 $ 5,619

RELATED-PARTY TRANSACTIONS

RELATED-PARTY TRANSACTIONS	12 Months Ended
	Dec. 31, 2020
RELATED-PARTY TRANSACTIONS [Abstract]
RELATED-PARTY TRANSACTIONS	13. RELATED-PARTY TRANSACTIONS Direct and indirect loans to executive officers, directors, significant stockholders and their related affiliates as of December 31, 2020 and 2019 aggregated approximately $8.9 million and $10.3 million, respectively. There were no charge-offs related to these loans in 2020 or 2019 and advance and repayment activity was routine. Deposits from these related parties in the CFS were not significant.

OFF-BALANCE-SHEET ACTIVITIES, C

OFF-BALANCE-SHEET ACTIVITIES, COMMITMENTS AND CONTINGENCIES	12 Months Ended
	Dec. 31, 2020
OFF-BALANCE-SHEET ACTIVITIES, COMMITMENTS AND CONTINGENCIES [Abstract]
OFF-BALANCE-SHEET ACTIVITIES, COMMITMENTS AND CONTINGENCIES	14. OFF-BALANCE-SHEET ACTIVITIES, COMMITMENTS AND CONTINGENCIES Financial instruments with off-balance-sheet risk The Company’s exposure to credit loss is represented by the contractual amount of these commitments. The Company follows the same credit policies in making commitments as it does for recorded instruments. Financial instruments whose contract amounts represent credit risk outstanding at year-end follow: 2020 2019 Commitments to grant loans and unfunded commitments under lines of credit $ 417,798 $ 409,969 Standby letters-of-credit 10,481 10,748 Commitments to extend credit are agreements to lend to a customer as long as there is no violation of any condition established in the contract. Commitments generally have fixed expiration dates or other termination clauses and may require payment of a fee. The commitments for lines of credit may expire without being drawn upon. Therefore, the total commitment amounts do not necessarily represent future cash requirements. The amount of collateral obtained, if it is deemed necessary by the Company, is based on management’s credit evaluation of the customer. Standby letters-of-credit are conditional commitments issued by the Company to guarantee the performance of a customer to a third party. Those letters-of-credit are primarily issued to support public and private borrowing arrangements. Essentially all letters-of-credit issued have expiration dates within one year. The credit risk involved in issuing letters-of-credit is essentially the same as that involved in extending loan facilities to customers. The Company requires collateral supporting those commitments if deemed necessary. Litigation FHLB Letters of Credit Lease Commitments 2021 $ 1,644 2022 1,517 2023 1,257 2024 929 2025 675 Thereafter 4,613 $ 10,635

CAPITAL AND REGULATORY MATTERS

CAPITAL AND REGULATORY MATTERS	12 Months Ended
	Dec. 31, 2020
CAPITAL AND REGULATORY MATTERS [Abstract]
CAPITAL AND REGULATORY MATTERS	15. CAPITAL AND REGULATORY MATTERS The Company and its bank subsidiary are subject to various regulatory capital requirements administered by its banking regulators. Failure to meet minimum capital requirements can initiate certain mandatory and possibly additional discretionary actions by regulators that, if undertaken, could have a direct material effect on the Company’s and its bank subsidiary’s financial statements. Under capital guidelines and the regulatory framework for prompt corrective action, the Company and its bank subsidiary must meet specific capital guidelines that involve quantitative measures of their assets, liabilities, and certain off-balance-sheet items as calculated under regulatory accounting practices. The capital amounts and classification are also subject to qualitative judgments by the regulators about components, risk weightings, and other factors. Prompt corrective action provisions are not applicable to bank holding companies. In July 2013, the Federal Reserve published final rules for the adoption of the Basel III regulatory capital framework (Basel III). Basel III, among other things, (i) introduces a new capital measure called Common Equity Tier 1 (“CET1”), (ii) specifies that Tier 1 capital consists of CET1 and Additional Tier 1 Capital instruments meeting specified requirements, (iii) defines Common Equity Tier 1 narrowly by requiring that most deductions/adjustments to regulatory capital measures be made to CET1 and not to the other components of capital and (iv) expands the scope of the deductions/adjustments as compared to existing regulations. Basel III became effective for the Company and its bank subsidiary on January 1, 2016 with certain transition provisions fully phased-in on January 1, 2019. The Company was in compliance with the fully phased in requirements at December 31, 2020. Quantitative measures established by regulation to ensure capital adequacy require the Company and its bank subsidiary to maintain minimum amounts and ratios (set forth in the following table) of total and Tier 1 capital (as defined in the regulations) to risk-weighted assets (as defined) and of Tier 1 capital (as defined) to average assets (as defined). Management believes, as of December 31, 2020 and 2019, that the Company and its bank subsidiary met all capital adequacy requirements to which they are subject. As of December 31, 2020, the bank subsidiary was well capitalized under the regulatory framework for prompt corrective action. To be categorized as well capitalized, an institution must maintain minimum total risk-based, Tier 1 risk-based, and Tier 1 leverage ratios as set forth in the following tables. There are no conditions or events since December 31, 2020 that management believes have changed the bank subsidiary’s category. The Company and its bank subsidiary’s actual capital amounts and ratios follow: Actual Minimum Required Under BASEL III Fully Phased-In To Be Well Capitalized Under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio December 31, 2020: Total Capital to Risk Weighted Assets: Consolidated $ 473,425 19.08 % $ 260,531 10.50 % N/A N/A City Bank 404,138 16.29 % 260,481 10.50 % $ 248,077 10.00 % Tier I Capital to Risk Weighted Assets: Consolidated 366,639 14.78 % 210,906 8.50 % N/A N/A City Bank 372,947 15.03 % 210,866 8.50 % 198,462 8.00 % Common Tier 1 (CET1): Consolidated 321,639 12.96 % 173,688 7.00 % N/A N/A City Bank 372,947 15.03 % 173,654 7.00 % 161,250 6.50 % Tier I Capital to Average Assets: Consolidated 366,639 10.24 % 144,347 4.00 % N/A N/A City Bank 372,947 10.42 % 144,282 4.00 % 178,999 5.00 % December 31, 2019: Total Capital to Risk Weighted Assets: Consolidated $ 373,684 14.88 % $ 263,769 10.50 % N/A N/A City Bank 368,322 14.67 % 263,702 10.50 % $ 251,145 10.00 % Tier I Capital to Risk Weighted Assets: Consolidated 322,835 12.85 % 213,527 8.50 % N/A N/A City Bank 343,945 13.70 % 213,473 8.50 % 200,916 8.00 % Common Tier 1 (CET1): Consolidated 277,835 11.06 % 175,846 7.00 % N/A N/A City Bank 343,945 13.70 % 175,801 7.00 % 163,244 6.50 % Tier I Capital to Average Assets: Consolidated 322,835 10.74 % 120,219 4.00 % N/A N/A City Bank 343,945 11.45 % 121,235 4.00 % 150,175 5.00 % State banking regulations place certain restrictions on dividends paid by banks to their shareholders. Dividends paid by the Company’s bank subsidiary would be prohibited if the effect thereof would cause the bank subsidiary’s capital to be reduced below applicable minimum capital requirements.

DERIVATIVES

DERIVATIVES	12 Months Ended
	Dec. 31, 2020
DERIVATIVES [Abstract]
DERIVATIVES	16. DERIVATIVES The Company utilizes interest rate swap agreements as part of its asset-liability management strategy to help manage its interest-rate risk position. The notional amount of the interest rate swaps does not represent amounts exchanged by the parties. The amount exchanged is determined by reference to the notional amount and the other terms of the individual interest rate swap agreements. The following table reflects the changes in fair value hedges included in the Consolidated Statements of Comprehensive Income as of December 31: Interest Rate Contracts Location 2020 2019 Change in fair value on interest rate swaps hedging fixed rate loans Interest income $ (576 ) $ (520 ) Change in fair value on fixed rate loans - hedged item Interest income $ 580 $ 511 The following table reflects the fair value hedges included in the Consolidated Balance Sheets as of December 31: 2020 2019 Notional Amount Fair Value Notional Amount Fair Value Included in other liabilities: Interest rate swaps related to fixed rate loans $ 10,178 $ 927 $ 10,557 $ 351 The following table reflects the cash flow hedges included in the consolidated balance sheets: 2020 2019 Notional Amount Fair Value Notional Amount Fair Value Included in other liabilities: Cash flow swaps related to state and municipal securities $ 68,485 $ 1,643 $ — $ — Included in other assets: Cash flow swaps related to state and municipal securities $ 55,275 $ 1,618 $ — $ — Mortgage banking derivatives The net gains (losses) relating to free standing derivative instruments used for risk management are summarized below as of December 31: Location 2020 2019 Forward contracts related to mortgage loans held for sale Net gain (loss) on sales of loans $ (754 ) $ 672 Interest rate lock commitments Net gain (loss) on sales of loans $ 3,409 $ (249 ) The following table reflects the amount and fair value of mortgage banking derivatives in the Consolidated Balance Sheets as of December 31: 2020 2019 Notional Amount Fair Value Notional Amount Fair Value Included in other assets: Forward contracts related to mortgage loans held for sale $ — $ — $ — $ — Interest rate lock commitments 210,716 5,115 52,875 814 Total included in other assets $ 210,716 $ 5,115 $ 52,875 $ 814 Included in other liabilities: Forward contracts related to mortgage loans held for sale $ 203,669 $ 1,787 $ 58,948 $ 141 Interest rate lock commitments — — — — Total included in other liabilities $ 203,669 $ 1,787 $ 58,948 $ 141

PARENT COMPANY ONLY CONDENSED F

PARENT COMPANY ONLY CONDENSED FINANCIAL INFORMATION	12 Months Ended
	Dec. 31, 2020
PARENT COMPANY ONLY CONDENSED FINANCIAL INFORMATION [Abstract]
PARENT COMPANY ONLY CONDENSED FINANCIAL INFORMATION	17. PARENT COMPANY ONLY CONDENSED FINANCIAL INFORMATION Condensed financial information of South Plains Financial, Inc. follows: CONDENSED BALANCE SHEETS December 31, 2020 2019 ASSETS (In thousands except per share data) Cash and cash equivalents $ 67,890 $ 4,181 Investment in banking subsidiary 421,355 372,292 Investment in other subsidiary 51 51 Other assets 4,248 3,906 Total assets $ 493,544 $ 380,430 LIABILITIES AND STOCKHOLDERS’ EQUITY Debt $ 121,982 $ 72,865 Accrued expenses and other liabilities 1,514 1,383 Stockholders’ equity 370,048 306,182 Total liabilities and stockholders’ equity $ 493,544 $ 380,430 CONDENSED STATEMENTS OF INCOME Years Ended December 31, 2020 2019 Dividends $ 20,500 $ 10,000 Other income 115 64 ESOP Contribution — (1,800 ) Interest expense (3,390 ) (3,562 ) Other expense (1,572 ) (2,221 ) Income before income tax and undistributed subsidiary income 15,653 2,481 Income tax (benefit) (1,018 ) (1,498 ) Equity in undistributed subsidiary income 28,682 25,241 Net Income $ 45,353 $ 29,220 CONDENSED STATEMENTS OF CASH FLOWS Years Ended December 31, 2020 2019 Cash flows from operating activities: Net income $ 45,353 $ 29,220 Adjustments: Equity in undistributed subsidiary income (28,682 ) (25,241 ) Amortization of debt issuance costs 47 — Stock based compensation 1,272 853 Change in other assets (342 ) (1,601 ) Change in other liabilities 131 541 Release of unearned ESOP shares — — Net cash from operating activities 17,779 3,772 Cash flows from investing activities: Cash paid in business combination — (76,100 ) Net cash from investing activities — (76,100 ) Cash flows from financing activities: Proceeds from long-term borrowings 49,070 — Repayments of long-term borrowings — (7,530 ) Issuance of common stock — 51,392 Payments to tax authorities for stock-based compensation (319 ) (351 ) Payments to repurchase common stock (293 ) — Share based liability conversion — 11,450 Cash dividends on common stock (2,528 ) (1,079 ) Net cash from financing activities 45,930 53,882 Net change in cash and cash equivalents 63,709 (18,446 ) Beginning cash and cash equivalents 4,181 22,627 Ending cash and cash equivalents $ 67,890 $ 4,181

EARNINGS PER SHARE

EARNINGS PER SHARE	12 Months Ended
	Dec. 31, 2020
EARNINGS PER SHARE [Abstract]
EARNINGS PER SHARE	18. EARNINGS PER SHARE The factors used in the earnings per share computation follow: December 31, 2020 2019 Net income $ 45,353 $ 29,220 Weighted average common shares outstanding - basic 18,054,373 16,818,697 Weighted average common shares outstanding - diluted 18,339,033 17,040,550 Basic earnings per share $ 2.51 $ 1.74 Diluted earnings per share $ 2.47 $ 1.71

SEGMENT INFORMATION

SEGMENT INFORMATION	12 Months Ended
	Dec. 31, 2020
SEGMENT INFORMATION [Abstract]
SEGMENT INFORMATION	19. SEGMENT INFORMATION Financial results by reportable segment are detailed below: Banking Insurance Consolidated 2020 Net interest income $ 122,285 $ — $ 122,285 Provision for loan loss (25,570 ) — (25,570 ) Noninterest income 94,010 7,593 101,603 Noninterest expense (135,985 ) (5,730 ) (141,715 ) Income before income taxes 54,740 1,863 56,603 Income tax (expense) benefit (10,804 ) (446 ) (11,250 ) Net income $ 43,936 $ 1,417 $ 45,353 Total assets $ 3,584,828 $ 14,332 $ 3,599,160 Banking Insurance Consolidated 2019 Net interest income (expense) $ 104,575 $ — $ 104,575 Provision for loan loss (2,799 ) — (2,799 ) Noninterest income 49,834 6,799 56,633 Noninterest expense (117,160 ) (4,548 ) (121,708 ) Income before income taxes 34,450 2,251 36,701 Income tax (expense) benefit (7,097 ) (384 ) (7,481 ) Net income $ 27,353 $ 1,867 $ 29,220 Total assets $ 3,224,396 $ 12,771 $ 3,237,167

ACCUMULATED OTHER COMPREHENSIVE

ACCUMULATED OTHER COMPREHENSIVE INCOME	12 Months Ended
	Dec. 31, 2020
ACCUMULATED OTHER COMPREHENSIVE INCOME [Abstract]
ACCUMULATED OTHER COMPREHENSIVE INCOME	20. ACCUMULATED OTHER COMPREHENSIVE INCOME The following table details the changes in accumulated other comprehensive income (loss) by component, net of tax: Gains and (Losses) on Cash Flow hedges Unrealized Gains and (Losses) on Securities Available for Sale Total 2020 Beginning balance $ — $ 958 $ 958 Other comprehensive income (loss) before reclassification (60 ) 22,272 22,212 Amounts reclassified from other comprehensive — (1,831 ) (1,831 ) Net current period other comprehensive income (60 ) 20,441 20,381 Ending balance $ (60 ) $ 21,399 $ 21,339 2019 Beginning balance $ — $ (2,243 ) $ (2,243 ) Other comprehensive income before reclassification — 3,179 3,179 Amounts reclassified from other comprehensive — 22 22 Net current period other comprehensive income — 3,201 3,201 Ending balance $ — $ 958 $ 958 Amounts reclassified are shown on the Consolidated Statements of Comprehensive Income.

FAIR VALUE DISCLOSURES

FAIR VALUE DISCLOSURES	12 Months Ended
	Dec. 31, 2020
FAIR VALUE DISCLOSURES [Abstract]
FAIR VALUE DISCLOSURES	21. FAIR VALUE DISCLOSURES Fair value is the price that would be received to sell an asset or paid to transfer a liability in an orderly transaction between market participants. A fair value measurement assumes that the transaction to sell the asset or transfer the liability occurs in the principal market for the asset or liability or, in the absence of a principal market, the most advantageous market for the asset or liability. The price in the principal (or most advantageous) market used to measure the fair value of the asset or liability is not adjusted for transaction costs. An orderly transaction is a transaction that assumes exposure to the market for a period prior to the measurement date to allow for marketing activities that are usual and customary for transactions involving such assets and liabilities; it is not a forced transaction. Market participants are buyers and sellers in the principal market that are (i) independent, (ii) knowledgeable, (iii) able to transact and (iv) willing to transact. Valuation techniques that are consistent with the market approach, the income approach and/or the cost approach are required by GAAP. The market approach uses prices and other relevant information generated by market transactions involving identical or comparable assets and liabilities. The income approach uses valuation techniques to convert future amounts, such as cash flows or earnings, to a single present amount on a discounted basis. The cost approach is based on the amount that currently would be required to replace the service capacity of an asset. Valuation techniques should be consistently applied. Inputs to valuation techniques refer to the assumptions that market participants would use in pricing the asset or liability. Inputs may be observable, meaning those that reflect the assumptions market participants would use in pricing the asset or liability developed based on market data obtained from independent sources, or unobservable, meaning those that reflect the reporting entity’s own assumptions about the assumptions market participants would use in pricing the asset or liability developed based on the best information available in the circumstances. The fair value hierarchy for valuation inputs gives the highest priority to quoted prices in active markets for identical assets or liabilities and the lowest priority to unobservable inputs. The fair value hierarchy is as follows: ● Level 1 Inputs ● Level 2 Inputs ● Level 3 Inputs The following table summarizes fair value measurements as of December 31: Level 1 Level 2 Level 3 Total 2020 Assets (liabilities) measured at fair value on a recurring basis: Securities available for sale: U.S. government and agencies $ — $ 4,753 $ — $ 4,753 State and municipal — 272,607 — 272,607 Mortgage-backed securities — 373,362 — 373,362 Collateralized mortgage obligations — 106,715 — 106,715 Asset-backed and other amortizing securities — 33,572 — 33,572 Other securities — 12,078 — 12,078 Loans held for sale (mandatory) — 80,174 — 80,174 Mortgage servicing rights — — 9,049 9,049 Asset derivatives — 6,734 — 6,734 Liability derivatives — (4,357 ) — (4,357 ) Assets measured at fair value on a non-recurring basis: Impaired loans — — 11,926 11,926 Other real estate owned — — 1,353 1,353 Level 1 Level 2 Level 3 Total 2019 Assets (liabilities) measured at fair value on a recurring basis: Securities available for sale: U.S. government and agencies $ — $ 4,807 $ — $ 4,807 State and municipal — 94,692 — 94,692 Mortgage-backed securities — 464,516 — 464,516 Collateralized mortgage obligations — 107,289 — 107,289 Asset-backed and other amortizing securities — 36,346 — 36,346 Loans held for sale (mandatory) — 32,809 — 32,809 Mortgage servicing rights — - 2,054 2,054 Asset derivatives — 814 — 814 Liability derivatives — (492 ) — (492 ) Assets measured at fair value on a non-recurring basis: Impaired loans — — 3,642 3,642 Other real estate owned — — 1,883 1,883 Securities Loans held for sale (mandatory) Mortgage servicing rights Derivatives Impaired loans Foreclosed assets Loans held for sale (best efforts) The following table presents quantitative information about non-recurring Level 3 fair value measurements at December 31: Fair Value Valuation Techniques Unobservable Inputs Range of Discounts 2020 Impaired loans $ 11,926 Third party appraisals or inspections Collateral discounts and selling costs 0% -100 % Other real estate owned 1,353 Third party appraisals or inspections Collateral discounts and selling costs 15% -66 % Mortgage servicing rights 9,049 Discounted cash flows Conditional prepayment rate 4.48 % Discount rate 9.72 % 2019 Impaired loans $ 3,642 Third party appraisals or inspections Collateral discounts and selling costs 0% -100 % Other real estate owned 1,883 Third party appraisals or inspections Collateral discounts and selling costs 15% -66 % Mortgage servicing rights 2,054 Discounted cash flows Conditional prepayment rate 5.23 % Discount rate 10.78 % The following table summarizes carrying value measurements as of December 31: Carrying Amount Level 1 Level 2 Level 3 Total 2020 Financial assets: Cash and cash equivalents $ 300,307 $ 300,307 $ — $ — $ 300,307 Loans, net 2,176,030 — — 2,179,573 2,179,573 Accrued interest receivable 15,233 — 15,233 — 15,233 Bank-owned life insurance 70,731 — 70,731 — 70,731 Financial liabilities: Deposits 2,974,351 2,649,830 329,609 — 2,979,439 Accrued interest payable 2,113 — 2,113 — 2,113 Notes payable & other borrowings 75,000 — 75,000 — 75,000 Junior subordinated deferrable interest debentures 46,393 — 45,690 — 45,690 Subordinated debt securities 75,589 — 76,889 — 76,889 Carrying Amount Level 1 Level 2 Level 3 Total 2019 Financial assets: Cash and cash equivalents $ 158,099 $ 158,099 $ — $ — $ 158,099 Loans, net 2,119,426 — — 2,123,289 2,123,289 Accrued interest receivable 13,924 — 13,924 — 13,924 Bank-owned life insurance 69,397 — 69,397 — 69,397 Financial liabilities: Deposits 2,696,857 2,354,999 346,194 — 2,701,193 Accrued interest payable 2,283 — 2,283 — 2,283 Notes payable & other borrowings 95,000 — 95,000 — 95,000 Junior subordinated deferrable interest debentures 46,393 — 46,393 — 46,393 Subordinated debt securities 26,472 — 26,472 — 26,472

BUSINESS COMBINATIONS

BUSINESS COMBINATIONS	12 Months Ended
	Dec. 31, 2020
BUSINESS COMBINATIONS [Abstract]
BUSINESS COMBINATIONS	22. BUSINESS COMBINATIONS In September 2019, Windmark acquired the operating assets of a crop insurance agency in Texas for $2.8 million. Windmark recorded $193 thousand for goodwill, which represents the excess of the cash paid compared to the fair market value of identifiable assets acquired. Fair value of the assets acquired and liabilities assumed in this transaction as of the closing date are as follows: Cash paid $ 2,800 Assets acquired: Premises and equipment, net $ 8 Customer list 1,800 Other intangible assets 509 Other assets 290 Total assets acquired $ 2,607 Goodwill recorded in acquisition $ 193 In June 2020, Windmark acquired the operating assets of a crop insurance agency in Nebraska for $687 thousand. Fair value of the assets acquired in this transaction as of the closing date are as follows: Cash paid $ 687 Assets acquired: Premises and equipment, net $ 24 Customer list 512 Other intangible assets 151 Total assets acquired $ 687 Goodwill recorded in acquisition $ — The Company is still evaluating the fair values of other assets and other liabilities, additional adjustments may be recorded during the measurement period, but no later than one year from the closing date of the transaction. The Company will reflect measurement period adjustments, if any, in the period in which the adjustments are recognized, which may result in further adjustments to the values presented in the above table. The Company expects to finalize these values by June 30, 2021. West Texas State Bank In November 2019, the Company completed its acquisition of West Texas State Bank (“WTSB”). This transaction resulted in six additional branches. The Company paid the shareholders of WTSB $76.1 million in cash, for all outstanding stock of WTSB and resulted in 100% ownership interest. The Company recognized total goodwill of $19.3 million which is calculated as the excess of both the consideration exchanged and liabilities assumed compared to the fair market value of identifiable assets acquired. None of the goodwill recognized is expected to be deductible for income tax purposes. The Company incurred expenses related to the acquisition of approximately $955 thousand for the year ended December 31, 2019, which are included in noninterest expense in the Consolidated Statements of Comprehensive Income. Non-credit impaired loans had a fair value of $196.2 million at the acquisition date and contractual balance of $198.4 million. As of the acquisition date, the Company expects that an insignificant amount of the contractual balance of these loans will be uncollectible. The difference of $2.2 million will be recognized into interest income as an adjustment to yield over the life of the loans. Purchased credit impaired loans were insignificant. Fair values of the assets acquired and liabilities assumed in this transaction as of the closing date are as follows: Cash paid $ 76,100 Assets acquired: Cash and cash equivalents $ 77,903 Interest-bearing time deposits in banks 52,700 Federal funds purchased 26,468 Securities available for sale 68,398 Loans held for investment 195,228 Bank-owned life insurance 10,932 Premises and equipment, net 4,132 Accrued interest receivable 1,114 Core deposit intangible 6,679 Other assets 2,648 Total assets acquired $ 446,202 Liabilities assumed Deposits $ 386,176 Accrued interest payable 55 Deferred tax liability 762 Other liabilities 2,424 Total liabilities assumed $ 389,417 Net assets acquired $ 56,785 Goodwill recorded in acquisition $ 19,315 During 2020, the Company made measurement period adjustments to reflect facts and circumstances in existence as of the closing date of the acquisition. These adjustments primarily included a $751 thousand increase in goodwill, a $900 thousand decrease in loans, and a $460 thousand decrease in other liabilities. The amount of income recorded in current period earnings that would have been recorded in the previous reporting period had the adjustment been recognized as of the acquisition date is not significant.

SUMMARY OF SIGNIFICANT ACCOUN_2

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Policies)	12 Months Ended
	Dec. 31, 2020
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]
Nature of Operations	Nature of Operations Wholly Owned, Consolidated Subsidiaries: City Bank Bank subsidiary Windmark Insurance Agency, Inc. Non-bank subsidiary Ruidoso Retail, Inc. Non-bank subsidiary CB Provence, LLC Non-bank subsidiary CBT Brushy Creek, LLC Non-bank subsidiary CBT Properties, LLC Non-bank subsidiary Wholly Owned, Equity Method Subsidiaries: South Plains Financial Capital Trusts (SPFCT) III-V Non-bank subsidiaries
Consolidation	Basis of Presentation and Consolidation
Basis of Presentation	The Company’s CFS are prepared and presented in accordance with generally accepted accounting principles (“GAAP”) in the U.S. Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”)
Subsequent Events	The Company evaluated subsequent events for potential recognition and/or disclosure through the date the CFS were available to be issued.
Use of Estimates	Use of Estimates
Change in Capital Structure	Change in Capital Structure The Company completed a 29-to-1 stock split of the Company’s outstanding shares of common stock for shareholders of record as of March 11, 2019. The stock split was payable in the form of a dividend on or about March 11, 2019. Shareholders received 29 additional shares for each share held as of the record date. All share and per share amounts in the CFS have been retroactively adjusted to reflect this stock split for all periods presented.
Stock Offering	Stock Offering
Concentration of Credit Risk	Concentration of Credit Risk
Risks and Uncertainties	Risks and Uncertainties
Comprehensive Income	Comprehensive Income
Cash and Cash Equivalents	Cash and Cash Equivalents
Securities	Securities When the fair value of a security is below its amortized cost, additional analysis is performed to determine whether an other-than-temporary impairment condition exists. The analysis considers (i) whether there is intent to sell securities prior to recovery and/or maturity, (ii) whether it is more likely than not that securities will have to be sold prior to recovery and/or maturity, and (iii) whether there is a credit loss component to the impairment. Often, the information available to conduct these assessments is limited and rapidly changing, making estimates of fair value subject to judgment. If actual information or conditions are different than estimated, the extent of the impairment of a security may be different than previously estimated, which could have a material effect on the Company’s results of operations and financial condition.
Nonmarketable Equity Securities	Nonmarketable Equity Securities
Loans	Loans Loans are placed on nonaccrual status when, in management’s opinion, collection of interest is unlikely, which typically occurs when principal or interest payments are more than ninety days past due. When interest accrual is discontinued, all unpaid accrued interest is reversed against interest income. The interest on these loans is accounted for on the cash-basis or cost-recovery method, until qualifying for return to accrual. Loans are returned to accrual status when all the principal and interest amounts contractually due are brought current and future payments are reasonably assured.
Allowance for Loan Losses	Allowance for Loan Losses The allowance for loan losses is evaluated on a quarterly basis by management and is based upon management’s review of the collectability of the loans in light of historical experience, the nature and volume of the loan portfolio, adverse situations that may affect the borrower’s ability to repay, estimated value of any underlying collateral, and prevailing economic conditions. This evaluation is inherently subjective, as it requires estimates that are susceptible to significant revision as more information becomes available. The determination of the adequacy of the allowance for loan losses is based on estimates that are particularly susceptible to significant changes in the economic environment and market conditions. In connection with the determination of the estimated losses on loans, management obtains independent appraisals for significant collateral. Loans originated by the bank subsidiary are generally secured by specific items of collateral including real property, crops, livestock, consumer assets, and other business assets. While management uses available information to recognize losses on loans, further reductions in the carrying amounts of loans may be necessary based on various factors. In addition, regulatory agencies, as an integral part of their examination process, periodically review the estimated losses on loans. Such agencies may require the bank subsidiary to recognize additional losses based on their judgments about information available to them at the time of their examination. Because of these factors, it is reasonably possible that the estimated losses on loans may change materially in the near term. However, the amount of the change that is reasonably possible cannot be estimated. A loan is considered impaired when, based on current information and events, it is probable that the Company will be unable to collect the scheduled payments of principal or interest when due according to the contractual terms of the loan agreement. All loans rated substandard or worse and greater than $250,000 are specifically reviewed to determine if they are impaired. Factors considered by management in determining whether a loan is impaired include payment status and the sources, amounts, and probabilities of estimated cash flow available to service debt in relation to amounts due according to contractual terms. Loans that experience insignificant payment delays and payment shortfalls generally are not classified as impaired. Management determines the significance of payment delays and payment shortfalls on a case-by-case basis, taking into consideration all of the circumstances surrounding the loan and the borrower, including the length of the delay, the reasons for the delay, the borrower’s prior payment record, and the amount of the shortfall in relation to the principal and interest owed. Loans that are determined to be impaired are then evaluated to determine estimated impairment, if any. GAAP allows impairment to be measured on a loan-by-loan basis by either the present value of expected future cash flows discounted at the loan’s effective interest rate, the loan’s obtainable market price, or the fair value of the collateral if the loan is collateral dependent. Loans that are not individually determined to be impaired or are not subject to the specific review of impaired status are subject to the general valuation allowance portion of the allowance for loan loss. The Company may modify its loan agreement with a borrower. The modification will be considered a troubled debt restructuring if the following criteria are met: (1) the borrower is experiencing a financial difficulty and (2) the Company makes a concession that it would not otherwise make. Concessions may include debt forgiveness, interest rate change, or maturity extension. Each of these loans is impaired and is evaluated for impairment, with a specific reserve recorded as necessary based on probable losses related to collateral and cash flow. A loan will no longer be required to be reported as restructured in calendar years following the restructure if the interest rate at the time of restructure is greater than or equal to the rate the Company was willing to accept for a new extension of credit with similar risk and the loan is in compliance with its modified terms.
Acquired Loans	Acquired Loans The excess of cash flows expected at acquisition over the estimated fair value is referred to as the accretable discount and is recognized into interest income over the remaining life of the loan. The difference between contractually required payments at acquisition and the cash flows expected to be collected at acquisition is referred to as the nonaccretable discount. These loans are accounted for under ASC 310-30, Loans and Debt Securities Acquired with Deteriorated Credit Quality. Loans acquired through business combinations that meet the specific criteria of ASC 310-30 are individually evaluated each period to analyze expected cash flows. To the extent that the expected cash flows of a loan have decreased due to credit deterioration, the Company then establishes an allowance. Loans acquired through business combinations that do not meet the specific criteria of ASC 310-30 are accounted for under ASC 310-20. These loans are initially recorded at fair value, and include credit and interest rate marks associated with acquisition accounting adjustments. Purchase premiums or discounts are subsequently amortized as an adjustment to yield over the estimated contractual lives of the loans. There is no allowance for loan losses established at the acquisition date for acquired performing loans. An allowance for loan losses is recorded for any credit deterioration in these loans subsequent to acquisition. Acquired loans that met the criteria for impaired or nonaccrual of interest prior to the acquisition may be considered performing upon acquisition, regardless of whether the customer is contractually delinquent, if the Company expects to fully collect the new carrying value (i.e. fair value) of the loans. As such, the Company may no longer consider the loan to be nonaccrual or nonperforming at the date of acquisition and may accrue interest on these loans, including the impact of any accretable discount. In addition, charge-offs on such loans would be first applied to the nonaccretable difference portion of the fair value adjustment.
Mortgage Servicing Rights	Mortgage Servicing Rights Under the fair value measurement method, the Company measures servicing rights at fair value at each reporting date and reports change in fair value of servicing assets in earnings in the period in which the changes occur, and are included with other noninterest income on the CFS. The fair values of servicing rights are subject to significant fluctuations as a result of changes in estimated and actual prepayment speeds and default rates and losses. Servicing fee income, which is reported on the CFS as other noninterest income, is recorded for fees earned for servicing loans. The fees are based on a contractual percentage of the outstanding principal; or a fixed amount per loan as recorded when income is earned. Servicing income was immaterial for the years ended December 31, 2020 and 2019.
Transfers of Financial Assets	Transfers of Financial Assets
Loans Held for Sale	Loans Held for Sale
Premises and Equipment	Premises and Equipment
Foreclosed Assets	Foreclosed Assets
Bank-Owned Life Insurance	Bank-Owned Life Insurance
Goodwill and Other Intangible Assets	Goodwill and Other Intangible Assets Core deposit intangible (“CDI”) is a measure of the value of checking and savings deposit relationships acquired in a business combination. The fair value of the CDI stemming from any given business combination is based on the present value of the expected cost savings attributable to the core deposit funding relative to an alternative source of funding. CDI is amortized over the estimated useful lives of the existing deposit relationships acquired, but does not exceed 10 years. Significantly all CDI is amortized using the sum of the years’ digits method. The remaining other intangible assets consist of customer relationship and employment agreement intangible assets and are amortized over their estimated useful lives of 5 years. The economic disruption and uncertainty surrounding the ongoing COVID-19 pandemic and the recent volatility in the market price of crude oil resulted in a decrease in the Company’s stock price. The Company believed this resulted in a triggering event and required an interim goodwill impairment quantitative analysis at March 31, 2020. Under the new simplified guidance, the Company’s estimated fair value as of March 31, 2020 exceeded its carrying amount, resulting in no impairment charge for the period. Management continued to evaluate the economic conditions at all subsequent reporting periods.
Mortgage Banking Derivatives	Mortgage Banking Derivatives In order to hedge the change in interest rates resulting from the commitments to fund the loans that will be sold through a best efforts contract, the Company enters into forward loans sales commitments for the future delivery of mortgage loans when interest rate locks are entered. At inception, these interest rate locks and the related forward loan sales commitments, adjusted for the expected exercise of the commitment before the loan is funded, are recorded with a zero value. Subsequent changes in fair value are estimated based on changes in mortgage interest rates from the date the interest on the loan is locked. In order to hedge the change in interest rates resulting from all other mortgage commitments to funds loans, the Company enters into forward sales of mortgage-backed securities contracts. At inception, these interest rate locks are recorded at fair value and are adjusted for the expected exercise of the commitment before the loan is funded. Subsequent changes in fair value are estimated based on changes in mortgage interest rates from the date the interest on the loan is locked. Changes in the fair values of these derivatives are included in net gain on sales of loans in the CFS.
Derivatives	Derivatives Net cash settlements on derivatives that qualify for hedge accounting are recorded in interest income or interest expense, based on the item being hedged. Net cash settlements on derivatives that do not qualify for hedge accounting are reported in noninterest income. Cash flows on hedges are classified in the cash flow statement the same as the cash flows of the items being hedged. The Company formally documents the relationship between derivatives and hedged items, as well as the risk-management objective and the strategy for undertaking hedge transactions at the inception of the hedging relationship. This documentation includes linking fair value or cash flow hedges to specific assets and liabilities on the balance sheet or to specific firm commitments or forecasted transactions. The Company also formally assesses, both at the hedge’s inception and on an ongoing basis, whether the derivative instruments that are used are highly effective in offsetting changes in fair values or cash flows of the hedged items. The Company discontinues hedge accounting when it determines that the derivative is no longer effective in offsetting changes in the fair value or cash flows of the hedged item, the derivative is settled or terminates, a hedged forecasted transaction is no longer probable, a hedged firm commitment is no longer firm, or treatment of the derivative as a hedge is no longer appropriate or intended. When hedge accounting is discontinued, subsequent changes in fair value of the derivative are recorded as noninterest income. When a fair value hedge is discontinued, the hedged asset or liability is no longer adjusted for changes in fair value and the existing basis adjustment is amortized or accreted over the remaining life of the asset or liability. When a cash flow hedge is discontinued but the hedged cash flows or forecasted transactions are still expected to occur, gains or losses that were accumulated in other comprehensive income are amortized into earnings over the same periods which the hedged transactions will affect earnings.
Revenue Recognition	Revenue Recognition – ASU 2014-09 Revenue from Contracts with Customers (Topic 606) The majority of the Company’s revenues come from interest income and other sources, including loans, securities and derivatives, that are outside the scope of ASC 606. The Company’s services that fall within the scope of Topic 606 are presented within Noninterest Income and are recognized as revenue as the Company satisfies its obligation to the customer. Services within the scope of Topic 606 include service charges on deposit accounts, bank card services and interchange fees, investment commissions, fiduciary fees, and the sale of OREO. However, the recognition of these revenue streams did not change significantly upon the adoption of Topic 606. Substantially all of the Company’s revenue is generated from contracts with customers. Noninterest income streams within the scope of Topic 606 are discussed below. Service Charges on Deposit Accounts The Company earns fees from its deposit customers for transaction-based, account maintenance, and overdraft services. Transaction-based fees, which include services such as stop payment charges, statement rendering, and ACH fees, are recognized at the time the transaction is executed as that is the point in time the Company fulfills the customer’s request. Account maintenance fees, which relate primarily to monthly maintenance, are earned over the course of a month, representing the period over which the Company satisfies the performance obligation. Overdraft fees are recognized at the point in time that the overdraft occurs. Service charges on deposits are withdrawn from the customer’s account balance. Bank Card Services and Interchange Fees The Company earns bank card service and interchange fees from debit and credit cardholder transactions conducted through card payment networks. Interchange fees from cardholder transactions represent a percentage of the underlying transaction value and are recognized daily, concurrently with the transaction processing services provided to the cardholder. Bank card services income mainly represents fees charged to merchants to process their debit and credit card transactions, in addition to account management fees and service fees such as ATM use fees and are recognized at the time the transaction is executed. Investment Commissions and Fiduciary Trust Fees The Company earns investment commissions and fiduciary trust fees from its contracts with trust customers to manage assets for investment, and/or to transact on their accounts. These fees are primarily earned over time as the Company provides the contracted monthly or quarterly services and are generally assessed based on a tiered scale of the market value of assets under management (AUM) at month-end. Fees that are transaction based, including trade execution services, are recognized at the point in time that the transaction is executed, i.e., the trade date. Other related services provided include financial planning services and the fees the Company earns, which are based on a fixed fee schedule, are recognized when the services are rendered. In addition, certain trust customers have contracted with the Company to provide trust dissolution services, which are based on a unitary management fee treated as a single performance obligation. The Company’s performance obligation is satisfied over time based on the customer simultaneously receiving and consuming the benefits of the Company’s service. The unitary management fee is treated as variable consideration and is evaluated and included in the transaction price at the end of each reporting period (quarterly). Revenue is recognized based on a reasonable time based measure of progress towards the Company’s complete satisfaction of the performance obligation at the end of each respective reporting period, with the unearned amount based on progress measure being included in deferred contract liability. This variable consideration and the amount of revenue recognized is evaluated quarterly until the Company has entirely fulfilled its performance obligation, at which time the remaining unearned revenue is recognized. Gains/Losses on Sales of OREO The Company records a gain or loss from the sale of OREO when control of the property transfers to the buyer, which generally occurs at the time of an executed deed. When the Company finances the sale of OREO to the buyer, the Company assesses whether the buyer is committed to perform their obligations under the contract and whether collectability of the transaction price is probable. Once these criteria are met, the OREO asset is derecognized and the gain or loss on sale is recorded upon the transfer of control of the property to the buyer. In determining the gain or loss on the sale, the Company adjusts the transaction price and related gain (loss) on sale if a significant financing component is present. Contract Balances A contract asset balance occurs when an entity performs a service for a customer before the customer pays consideration (resulting in a contract receivable) or before payment is due (resulting in a contract asset). A contract liability balance is an entity’s obligation to transfer a service to a customer for which the entity has already received payment (or payment is due) from the customer. The Company’s noninterest revenue streams are largely based on transactional activity, or standard month-end revenue accruals. Consideration is often received immediately or shortly after the Company satisfies its performance obligation and revenue is recognized. The Company does not typically enter into long-term revenue contracts with customers, and therefore, does not experience significant contract balances. The Company did not have any significant contract balances at December 31, 2020 and 2019. Contract Acquisition Costs In connection with the adoption of Topic 606, an entity is required to capitalize, and subsequently amortize into expense, certain incremental costs of obtaining a contract with a customer if these costs are expected to be recovered. The incremental costs of obtaining a contract are those costs that an entity incurs to obtain a contract with a customer that it would not have incurred if the contract had not been obtained (for example, sales commission). The Company utilizes the practical expedient which allows entities to immediately expense contract acquisition costs when the asset that would have resulted from capitalizing these costs would have been amortized in one year or less. Upon adoption of Topic 606, the Company did not capitalize any contract acquisition cost. Insurance Activities The Company’s primary source of revenues for insurance activities are commissions from underwriting enterprises, based on a percentage of premiums paid by clients. These commissions and fees revenues are substantially recognized at a point in time on the effective date of the associated policies when control of the policy transfers to the client. Commissions are fixed at the contract effective date and generally are based on a percentage of premiums for insurance coverage. Commissions depend upon a large number of factors, including the type of risk being placed, the particular underwriting enterprise’s demand, the expected loss experience of the particular risk of coverage, and historical benchmarks surrounding the level of effort necessary for us to place and service the insurance contract.
Stock-Based Compensation	Stock-Based Compensation
Advertising	Advertising
Income Taxes	Income Taxes A tax position is recognized as a benefit only if it is “more likely than not” that the tax position would be sustained in a tax examination, with a tax examination being presumed to occur. The amount recognized is the largest amount of tax benefit that is greater than 50% likely of being realized on examination. For tax positions not meeting the “more likely than not” test, no tax benefit is recorded. The State of Texas franchise tax is an income tax for financial reporting purposes under GAAP and the Company and its subsidiaries are subject to the modified tax as a combined group.
Earnings per Share	Earnings per Share
Fair Values of Financial Instruments	Fair Values of Financial Instruments
Trust Assets	Trust Assets
Segment Information	Segment Information
Reclassification	Reclassification
Change in Accounting Principle	Change in Accounting Principle
Recent Accounting Pronouncements	Recent Accounting Pronouncements Financial Accounting Standards Board (“FASB”) Accounting Standards Codification (“ASC”) ASU 2021-01, Reference Rate Reform (Topic 848) ASU 2020-04, Reference Rate Reform (Topic 848): Facilitation of the Effects of Reference Rate Reform on Financial Reporting. ASU 2019-12, Income Taxes, Simplifying the Accounting for Income Taxes (Topic 740). ASU 2017-04, Intangibles - Goodwill and Other (Topic 350). ASU 2016-13 Financial Instruments - Credit Losses (Topic 326). ASU 2016-02 Leases (Topic 842).

SUMMARY OF SIGNIFICANT ACCOUN_3

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Tables)	12 Months Ended
	Dec. 31, 2020
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES [Abstract]
Subsidiaries Information	Subsidiaries of SPFI follow: Wholly Owned, Consolidated Subsidiaries: City Bank Bank subsidiary Windmark Insurance Agency, Inc. Non-bank subsidiary Ruidoso Retail, Inc. Non-bank subsidiary CB Provence, LLC Non-bank subsidiary CBT Brushy Creek, LLC Non-bank subsidiary CBT Properties, LLC Non-bank subsidiary Wholly Owned, Equity Method Subsidiaries: South Plains Financial Capital Trusts (SPFCT) III-V Non-bank subsidiaries

SECURITIES (Tables)

SECURITIES (Tables)	12 Months Ended
	Dec. 31, 2020
SECURITIES [Abstract]
Amortized Cost and Fair Value of Securities, with Gross Unrealized Gains and Losses	The amortized cost and fair value of securities, with gross unrealized gains and losses, at year-end follow: Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value 2020 Available for sale: U.S. government and agencies $ 4,750 $ 3 $ — $ 4,753 State and municipal 261,023 11,704 (120 ) 272,607 Mortgage-backed securities 359,542 14,014 (194 ) 373,362 Collateralized mortgage obligations 107,175 — (460 ) 106,715 Asset-backed and other amortizing securities 31,509 2,063 — 33,572 Other securities 12,000 91 (13 ) 12,078 $ 775,999 $ 27,875 $ (787 ) $ 803,087 Amortized Cost Gross Unrealized Gains Gross Unrealized Losses Fair Value 2019 Available for sale: U.S. government and agencies $ 4,750 $ 57 $ — $ 4,807 State and municipal 94,512 1,091 (911 ) 94,692 Mortgage-backed securities 463,899 3,727 (3,110 ) 464,516 Collateralized mortgage obligations 107,443 15 (169 ) 107,289 Asset-backed and other amortizing securities 35,833 522 (9 ) 36,346 $ 706,437 $ 5,412 $ (4,199 ) $ 707,650
Amortized Cost and Fair Value of Securities by Contractual Maturity	The amortized cost and fair value of securities at December 31, 2020 are presented below by contractual maturity. Expected maturities may differ from contractual maturities because issuers may have the right to call or prepay obligations. Other securities are shown separately since they are not due at a single maturity date. Available for Sale Amortized Cost Fair Value Within 1 year $ 6,731 $ 6,761 After 1 year through 5 years 3,398 3,585 After 5 years through 10 years 26,079 26,959 After 10 years 241,565 252,133 Other 498,226 513,649 $ 775,999 $ 803,087
Securities with Unrealized Losses Segregated by the Period in a Loss Position	The following table segregates securities with unrealized losses at year-end, by the period they have been in a loss position: Less than 12 Months 12 Months or More Total Fair Value Unrealized Loss Fair Value Unrealized Loss Fair Value Unrealized Loss 2020 U.S. government and agencies $ — $ — $ — $ — $ — $ — State and municipal — 120 — — — 120 Mortgage-backed securities 93,482 194 — — 93,482 194 Collateralized mortgage obligations 106,715 460 — — 106,715 460 Asset-backed and other amortizing securities 3,486 — — — 3,486 — Other securities — 13 — — — 13 $ 203,683 $ 787 $ — $ — $ 203,683 $ 787 2019 U.S. government and agencies $ – $ – $ — $ — $ – $ – State and municipal 58,389 910 387 1 58,776 911 Mortgage-backed securities 284,120 3,071 4,661 40 288,781 3,111 Collateralized mortgage obligations 60,039 168 — — 60,039 168 Asset-backed and other amortizing securities 2,661 9 — — 2,661 9 $ 405,209 $ 4,158 $ 5,048 $ 41 $ 410,257 $ 4,199

LOANS HELD FOR INVESTMENT (Tabl

LOANS HELD FOR INVESTMENT (Tables)	12 Months Ended
	Dec. 31, 2020
LOANS HELD FOR INVESTMENT [Abstract]
Summary of Loans Held for Investment by Category	Loans are summarized by category at year-end as follows: 2020 2019 Commercial real estate $ 663,344 $ 658,195 Commercial - specialized 311,686 309,505 Commercial - general 518,309 441,398 Consumer: 1-4 family residential 360,315 362,796 Auto loans 205,840 215,209 Other consumer 67,595 74,000 Construction 94,494 82,520 2,221,583 2,143,623 Allowance for loan losses (45,553 ) (24,197 ) Loans, net $ 2,176,030 $ 2,119,426
Activity in Allowance for Loan Losses and Investment in Loans Disaggregated Based on Method of Evaluating Impairment	The following table details the activity in the allowance for loan losses during 2020 and 2019. Allocation of a portion of the allowance to one category of loans does not preclude its availability to absorb losses in other categories. Beginning Balance Provision for Loan Losses Charge-offs Recoveries Ending Balance 2020 Commercial real estate $ 5,049 $ 13,618 $ (7 ) $ 302 $ 18,962 Commercial - specialized 2,287 4,514 (1,162 ) 121 5,760 Commercial - general 9,609 1,219 (1,811 ) 210 9,227 Consumer: 1-4 family residential 2,093 2,478 (56 ) 131 4,646 Auto loans 3,385 1,814 (1,165 ) 192 4,226 Other consumer 1,341 1,300 (1,358 ) 388 1,671 Construction 433 627 — 1 1,061 Total $ 24,197 $ 25,570 $ (5,559 ) $ 1,345 $ 45,553 2019 Commercial real estate $ 5,579 $ (961 ) $ — $ 431 $ 5,049 Commercial - specialized 2,516 2 (355 ) 124 2,287 Commercial - general 8,173 1,209 (306 ) 533 9,609 Consumer: 1-4 family residential 2,249 219 (436 ) 61 2,093 Auto loans 2,994 1,276 (1,067 ) 182 3,385 Other consumer 1,192 969 (1,034 ) 214 1,341 Construction 423 85 (75 ) — 433 Total $ 23,126 $ 2,799 $ (3,273 ) $ 1,545 $ 24,197 The following table shows the Company’s investment in loans disaggregated based on the method of evaluating impairment: Recorded Investment Allowance for Loan Losses Individually Evaluated Collectively Evaluated Individually Evaluated Collectively Evaluated 2020 Commercial real estate $ 6,273 $ 657,071 $ 580 $ 18,382 Commercial - specialized — 311,686 — 5,760 Commercial - general 4,626 513,683 515 8,712 Consumer: 1-4 family residential 2,122 358,193 — 4,646 Auto loans — 205,840 — 4,226 Other consumer — 67,595 — 1,671 Construction — 94,494 — 1,061 Total $ 13,021 $ 2,208,562 $ 1,095 $ 44,458 2019 Commercial - $ 299 $ 657,896 $ — $ 5,049 Commercial - specialized 573 308,932 — 2,287 Commercial - general 1,396 440,002 525 9,084 Consumer: 1-4 family residential 1,899 360,897 — 2,093 Auto loans — 215,209 — 3,385 Other consumer — 74,000 — 1,341 Construction — 82,520 — 433 Total $ 4,167 $ 2,139,456 $ 525 $ 23,672
Impaired Loan Information	Impaired loan information at year-end follows: Unpaid Contractual Principal Balance Recorded Investment With No Allowance Recorded Investment With Allowance Total Recorded Investment Related Allowance Average Recorded Investment 2020 Commercial real estate $ 6,273 $ 3,673 $ 2,600 $ 6,273 $ 580 $ 3,666 Commercial -specialized — — — — — 673 Commercial - general 4,626 3,364 1,262 4,626 515 3,400 Consumer: 1-4 family 2,541 2,122 — 2,122 — 2,155 Auto loans — — — — — — Other consumer — — — — — — Construction — — — — — — Total $ 13,440 $ 9,159 $ 3,862 $ 13,021 $ 1,095 $ 9,894 2019 Commercial real estate $ 754 $ 299 $ — $ 299 $ — $ 1,059 Commercial specialized 573 573 — 573 — 1,345 Commercial general 1,839 — 1,396 1,396 525 2,173 Consumer: 1-4 family 2,318 1,899 — 1,899 — 2,187 Auto loans — — — — — — Other consumer — — — — — — Construction — — — — — — Total $ 5,484 $ 2,771 $ 1,396 $ 4,167 $ 525 $ 6,764
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans	The table below provides an age analysis on accruing past-due loans and nonaccrual loans at year-end: 30-89 Days Past Due 90 Days or More Past Due Nonaccrual 2020 Commercial real estate $ 914 $ 34 $ 6,311 Commercial - specialized 241 — 272 Commercial - general 1,891 149 5,489 Consumer: 1-4 Family residential 2,089 906 1,595 Auto loans 738 38 — Other consumer 481 119 51 Construction 206 — — Total $ 6,560 $ 1,246 $ 13,718 2019 Commercial real estate $ 37 $ 116 $ 162 Commercial - specialized 708 — 1,172 Commercial - general 1,747 — 2,254 Consumer: 1-4 Family residential 1,212 932 1,105 Auto loans 1,468 183 — Other consumer 848 121 — Construction 1,159 — — Total $ 7,179 $ 1,352 $ 4,693
Summary of Internal Classifications of Loans	The following table summarizes the internal classifications of loans at year-end: Pass Special Mention Substandard Doubtful Total 2020 Commercial real estate $ 602,250 $ — $ 61,094 $ — $ 663,344 Commercial - specialized 303,831 — 7,855 — 311,686 Commercial - general 510,543 — 7,766 — 518,309 Consumer: 1-4 family residential 352,930 — 7,385 — 360,315 Auto loans 204,301 — 1,539 — 205,840 Other consumer 67,216 — 379 — 67,595 Construction 94,494 — — — 94,494 Total $ 2,135,565 $ — $ 86,018 $ — $ 2,221,583 2019 Commercial real estate $ 632,641 $ 22,313 $ 3,241 $ — $ 658,195 Commercial - specialized 307,239 — 2,266 — 309,505 Commercial - general 428,155 — 13,243 — 441,398 Consumer: 1-4 family residential 356,422 — 6,374 — 362,796 Auto loans 214,363 — 846 — 215,209 Other consumer 73,716 — 284 — 74,000 Construction 82,520 — — — 82,520 Total $ 2,095,056 $ 22,313 $ 26,254 $ — $ 2,143,623

FORECLOSED ASSETS (Tables)

FORECLOSED ASSETS (Tables)	12 Months Ended
	Dec. 31, 2020
FORECLOSED ASSETS [Abstract]
Foreclosed Assets Activity	Foreclosed assets activity was as follows: 2020 2019 Beginning balance $ 1,883 $ 2,285 Additions 1,867 3,469 Sales, net (2,397 ) (3,871 ) Current year valuation write-down — — Ending balance $ 1,353 $ 1,883
Activity in Valuation Allowance	Activity in the valuation allowance was as follows: 2020 2019 Beginning balance $ — $ 325 Current year valuation write-down — — Reductions from sales — (325 ) Ending balance $ — $ —
Net Expenses Related to Foreclosed Assets	Net expenses related to foreclosed assets include: 2020 2019 Net gain (loss) on sales $ 40 $ (37 ) Current year valuation write-down — — Operating expenses, net of rental income (75 ) (71 ) Foreclosed assets expense, net $ (35 ) $ (108 )

PREMISES AND EQUIPMENT (Tables)

PREMISES AND EQUIPMENT (Tables)	12 Months Ended
	Dec. 31, 2020
PREMISES AND EQUIPMENT [Abstract]
Premises and Equipment	Detail of premises and equipment at year-end follows: 2020 2019 Land $ 10,825 $ 10,825 Buildings and improvements 65,840 63,972 Furniture and equipment 46,443 44,460 Construction in process 29 974 123,137 120,231 Less accumulated depreciation (62,806 ) (58,358 ) Premises and equipment, net $ 60,331 $ 61,873

GOODWILL AND INTANGIBLES (Table

GOODWILL AND INTANGIBLES (Tables)	12 Months Ended
	Dec. 31, 2020
GOODWILL AND INTANGIBLES [Abstract]
Goodwill and Other Intangible Assets	Goodwill and other intangible assets, which consist of CDI, customer lists, and employment agreements are summarized below: 2020 2019 Beginning goodwill $ 18,757 $ — Arising from business combinations — 18,757 Measurement period acquisition adjustment 751 — Ending goodwill $ 19,508 $ 18,757 Amortized intangible assets: Customer relationship intangibles $ 6,679 $ 6,679 Less: Accumulated amortization (1,396 ) (202 ) 5,283 6,477 Other intangibles 2,309 2,309 Arising from business combinations 663 — Less: Accumulated amortization (693 ) (154 ) 2,279 2,155 Other intangible assets, net $ 7,562 $ 8,632
Estimated Amount of Amortization Expense to Be Recognized over Next Five Years	The estimated amount of amortization expense for core deposit intangible and other intangible assets to be recognized over the next five years is as follows: CDI Other Intangible Total 2021 $ 1,073 $ 594 $ 1,667 2022 951 595 1,546 2023 830 594 1,424 2024 708 441 1,149 2025 587 55 642

MORTGAGE SERVICING RIGHTS (Tabl

MORTGAGE SERVICING RIGHTS (Tables)	12 Months Ended
	Dec. 31, 2020
MORTGAGE SERVICING RIGHTS [Abstract]
Change in Fair Value of Mortgage Servicing Rights Asset and Other Information	The following table reflects the changes in fair value of the Company’s mortgage servicing rights asset included in the Consolidated Balance Sheets, and other information related to the serviced portfolio: 2020 2019 Beginning balance $ 2,054 $ 1,270 Additions 9,829 1,332 Valuation adjustment, net of amortization (2,834 ) (548 ) Ending balance $ 9,049 $ 2,054 2020 2019 Mortgage loans serviced for others $ 1,203,687 $ 247,326 Mortgage servicing right asset as a percentage of serviced mortgage loans 1 % 1 %
Key Assumptions Used in Measuring Fair Value of Mortgage Servicing Rights	The following table reflects the ’ 2020 2019 Weighted average constant prepayment rate 4.48 % 5.23 % Weighted average discount rate 9.72 % 10.78 % Weighted average life in years 7.00 10.00

DEPOSITS (Tables)

DEPOSITS (Tables)	12 Months Ended
	Dec. 31, 2020
DEPOSITS [Abstract]
Maturities of Time Deposits	The scheduled maturities of time deposits at December 31, 2020 follows: 2021 $ 187,976 2022 83,077 2023 45,218 2024 6,293 2025 2,927 Thereafter 10 $ 325,501

BORROWING ARRANGEMENTS (Tables)

BORROWING ARRANGEMENTS (Tables)	12 Months Ended
	Dec. 31, 2020
BORROWING ARRANGEMENTS [Abstract]
Short-Term Borrowings	The following table summarizes our short-term borrowings at year-end: 2020 2019 Federal funds purchased $ 26,550 $ 17,165 FHLB advances - short-term — 20,000 Total $ 26,550 $ 37,165
FHLB Advances	The following table is a detail of the advances as of December 31: Issue Date Original Amount of Advance 2020 Balance 2019 Balance Maturity Date Interest Rate at December 31, 2020 2013 $ 20,000 $ — $ 20,000 2020 Fixed; 1.50% 2015 25,000 25,000 25,000 2025 Variable; 0.19% 2015 25,000 25,000 25,000 2025 Variable; 0.19% 2015 25,000 25,000 25,000 2025 Variable; 0.23% $ 95,000 $ 75,000 $ 95,000
Debentures and Trust Preferred Securities	The following table is a detail of the debentures and TPS at December 31, 2020: Issue Date Amount of TPS Amount of Debentures Stated Maturity Date of TPS and Debentures (1) Interest Rate of TPS and Debentures (2)(3) South Plains Financial Capital Trust III 2004 $ 10,000 $ 10,310 2034 3 -mo. LIBOR + 265bps; 2.86% South Plains Financial Capital Trust IV 2005 20,000 20,619 2035 3 -mo. LIBOR + 139bps; 1.61% South Plains Financial Capital Trust V 2007 15,000 15,464 2037 3 -mo. LIBOR + 150bps; 1.72% Total $ 45,000 $ 46,393 (1) May be redeemed five years from the issue date, the Company has no current plans to redeem; (2) Interest payable quarterly with principal due at maturity; (3) Rate as of last reset date.

STOCK-BASED COMPENSATION (Table

STOCK-BASED COMPENSATION (Tables)	12 Months Ended
	Dec. 31, 2020
STOCK-BASED COMPENSATION [Abstract]
Summary of Stock Option Activity	A summary of activity in the Plan during the year ended December 31, 2020 is presented in the table below: Number of Shares Weighted-Average Exercise Price Weighted-Average Remaining Contractual Life in Years Aggregate Intrinsic Value Year Ended December 31, 2020 Outstanding at beginning of year: 1,462,997 $ 13.42 $ 8,212 Granted 248,966 20.93 — Exercised (122,207 ) 10.33 (1,053 ) Forfeited (33,727 ) 17.83 (49 ) Expired (1,135 ) 16.00 (3 ) Balance, December 31, 2020 1,554,894 $ 14.77 5.97 $ 7,107 Exercisable at end of period 986,088 $ 12.39 5.24 $ 6,517 Vested at end of period 986,088 $ 12.39 5.24 $ 6,517
Summary of Assumptions Used to Calculate Fair Value of Awards	A summary of assumptions used to calculate the fair values of the awards is presented below: December 31, 2020 2019 Expected volatility 27.46 % 24.88% to 31.54% Expected dividend yield 0.70 % 0.70 % Expected term (years) 6.2 years 0.5 - 7.0 years Risk-free interest rate 1.44 % 1.46% to 2.63% Weighted average grant date fair value $ 5.68 $ 7.98
Summary of Activity of Restricted Stock Units	A summary of activity in the Plan during the year ended December 31, 2020 is presented in the table below: Number of Shares Weighted-Average Grant Date Fair Value Year Ended December 31, 2020 Outstanding at beginning of year: 81,200 $ 19.46 Granted 5,970 20.93 Exercised (24,694 ) 19.79 Forfeited — — Balance, December 31, 2020 62,476 $ 19.47

INCOME TAXES (Tables)

INCOME TAXES (Tables)	12 Months Ended
	Dec. 31, 2020
INCOME TAXES [Abstract]
Components of Income Tax Expense (Benefit)	The components of income tax expense (benefit) was as follows: Years Ended December 31, 2020 2019 Current expense Federal $ 12,590 $ 6,923 State 248 224 Deferred expense Federal (1,588 ) 334 Total $ 11,250 $ 7,481
Effective Income Tax Rate Reconciliation	Effective tax rates differ from the federal statutory rate of 21% applied to income before income taxes due to the following: Years Ended December 31, 2020 2019 Federal statutory rate times financial statement income $ 11,887 $ 7,707 Effect of: Tax-exempt income (863 ) (348 ) State taxes, net of federal benefit 196 177 Earnings from bank owned life insurance (280 ) (272 ) Non-deductible expenses 248 190 Other, net 62 27 Total $ 11,250 $ 7,481
Deferred Tax Assets and Liabilities	Year-end deferred tax assets and liabilities were due to the following: December 31, 2020 2019 Deferred tax assets Allowance for loan loss $ 9,566 $ 5,081 Deferred compensation 5,215 4,669 Other real estate owned 251 251 Nonaccrual loans 59 180 Other 221 162 Total deferred tax assets 15,312 10,343 Deferred tax liabilities Depreciation (2,432 ) (2,417 ) Intangibles (847 ) (924 ) Prepaid expenses (439 ) (419 ) Mortgage servicing rights (1,900 ) (431 ) Unrealized gain on available-for-sale securities (5,688 ) (255 ) Other (1,545 ) (278 ) Total deferred tax liabilities (12,851 ) (4,724 ) Net deferred tax asset $ 2,461 $ 5,619

OFF-BALANCE-SHEET ACTIVITIES,_2

OFF-BALANCE-SHEET ACTIVITIES, COMMITMENTS AND CONTINGENCIES (Tables)	12 Months Ended
	Dec. 31, 2020
OFF-BALANCE-SHEET ACTIVITIES, COMMITMENTS AND CONTINGENCIES [Abstract]
Financial Instrument Whose Contract Amounts Represent Credit Risk Outstanding	Financial instruments whose contract amounts represent credit risk outstanding at year-end follow: 2020 2019 Commitments to grant loans and unfunded commitments under lines of credit $ 417,798 $ 409,969 Standby letters-of-credit 10,481 10,748
Future Minimum Lease Payments Due under Non-Cancelable Operating Leases	Future minimum lease payments due under non-cancelable operating leases as of December 31, 2020 are as follows: 2021 $ 1,644 2022 1,517 2023 1,257 2024 929 2025 675 Thereafter 4,613 $ 10,635

CAPITAL AND REGULATORY MATTERS

CAPITAL AND REGULATORY MATTERS (Tables)	12 Months Ended
	Dec. 31, 2020
CAPITAL AND REGULATORY MATTERS [Abstract]
Actual Capital Amounts and Ratios	The Company and its bank subsidiary’s actual capital amounts and ratios follow: Actual Minimum Required Under BASEL III Fully Phased-In To Be Well Capitalized Under Prompt Corrective Action Provisions Amount Ratio Amount Ratio Amount Ratio December 31, 2020: Total Capital to Risk Weighted Assets: Consolidated $ 473,425 19.08 % $ 260,531 10.50 % N/A N/A City Bank 404,138 16.29 % 260,481 10.50 % $ 248,077 10.00 % Tier I Capital to Risk Weighted Assets: Consolidated 366,639 14.78 % 210,906 8.50 % N/A N/A City Bank 372,947 15.03 % 210,866 8.50 % 198,462 8.00 % Common Tier 1 (CET1): Consolidated 321,639 12.96 % 173,688 7.00 % N/A N/A City Bank 372,947 15.03 % 173,654 7.00 % 161,250 6.50 % Tier I Capital to Average Assets: Consolidated 366,639 10.24 % 144,347 4.00 % N/A N/A City Bank 372,947 10.42 % 144,282 4.00 % 178,999 5.00 % December 31, 2019: Total Capital to Risk Weighted Assets: Consolidated $ 373,684 14.88 % $ 263,769 10.50 % N/A N/A City Bank 368,322 14.67 % 263,702 10.50 % $ 251,145 10.00 % Tier I Capital to Risk Weighted Assets: Consolidated 322,835 12.85 % 213,527 8.50 % N/A N/A City Bank 343,945 13.70 % 213,473 8.50 % 200,916 8.00 % Common Tier 1 (CET1): Consolidated 277,835 11.06 % 175,846 7.00 % N/A N/A City Bank 343,945 13.70 % 175,801 7.00 % 163,244 6.50 % Tier I Capital to Average Assets: Consolidated 322,835 10.74 % 120,219 4.00 % N/A N/A City Bank 343,945 11.45 % 121,235 4.00 % 150,175 5.00 %

DERIVATIVES (Tables)

DERIVATIVES (Tables)	12 Months Ended
	Dec. 31, 2020
Mortgage Banking [Member]
Derivative [Line Items]
Net Gains (Losses) Relating to Derivative Instruments	The net gains (losses) relating to free standing derivative instruments used for risk management are summarized below as of December 31: Location 2020 2019 Forward contracts related to mortgage loans held for sale Net gain (loss) on sales of loans $ (754 ) $ 672 Interest rate lock commitments Net gain (loss) on sales of loans $ 3,409 $ (249 )
Fair Value of Derivatives in Consolidated Balance Sheets	The following table reflects the amount and fair value of mortgage banking derivatives in the Consolidated Balance Sheets as of December 31: 2020 2019 Notional Amount Fair Value Notional Amount Fair Value Included in other assets: Forward contracts related to mortgage loans held for sale $ — $ — $ — $ — Interest rate lock commitments 210,716 5,115 52,875 814 Total included in other assets $ 210,716 $ 5,115 $ 52,875 $ 814 Included in other liabilities: Forward contracts related to mortgage loans held for sale $ 203,669 $ 1,787 $ 58,948 $ 141 Interest rate lock commitments — — — — Total included in other liabilities $ 203,669 $ 1,787 $ 58,948 $ 141
Fair Value Hedging [Member]
Derivative [Line Items]
Fair Value of Derivatives in Consolidated Balance Sheets	The following table reflects the fair value hedges included in the Consolidated Balance Sheets as of December 31: 2020 2019 Notional Amount Fair Value Notional Amount Fair Value Included in other liabilities: Interest rate swaps related to fixed rate loans $ 10,178 $ 927 $ 10,557 $ 351
Cash Flow Hedging [Member]
Derivative [Line Items]
Fair Value of Derivatives in Consolidated Balance Sheets	The following table reflects the cash flow hedges included in the consolidated balance sheets: 2020 2019 Notional Amount Fair Value Notional Amount Fair Value Included in other liabilities: Cash flow swaps related to state and municipal securities $ 68,485 $ 1,643 $ — $ — Included in other assets: Cash flow swaps related to state and municipal securities $ 55,275 $ 1,618 $ — $ —
Interest Rate Contracts [Member] | Fair Value Hedging [Member]
Derivative [Line Items]
Net Gains (Losses) Relating to Derivative Instruments	The following table reflects the changes in fair value hedges included in the Consolidated Statements of Comprehensive Income as of December 31: Interest Rate Contracts Location 2020 2019 Change in fair value on interest rate swaps hedging fixed rate loans Interest income $ (576 ) $ (520 ) Change in fair value on fixed rate loans - hedged item Interest income $ 580 $ 511

PARENT COMPANY ONLY CONDENSED_2

PARENT COMPANY ONLY CONDENSED FINANCIAL INFORMATION (Tables)	12 Months Ended
	Dec. 31, 2020
PARENT COMPANY ONLY CONDENSED FINANCIAL INFORMATION [Abstract]
Condensed Balance Sheets	CONDENSED BALANCE SHEETS December 31, 2020 2019 ASSETS (In thousands except per share data) Cash and cash equivalents $ 67,890 $ 4,181 Investment in banking subsidiary 421,355 372,292 Investment in other subsidiary 51 51 Other assets 4,248 3,906 Total assets $ 493,544 $ 380,430 LIABILITIES AND STOCKHOLDERS’ EQUITY Debt $ 121,982 $ 72,865 Accrued expenses and other liabilities 1,514 1,383 Stockholders’ equity 370,048 306,182 Total liabilities and stockholders’ equity $ 493,544 $ 380,430
Condensed Statements of Income	CONDENSED STATEMENTS OF INCOME Years Ended December 31, 2020 2019 Dividends $ 20,500 $ 10,000 Other income 115 64 ESOP Contribution — (1,800 ) Interest expense (3,390 ) (3,562 ) Other expense (1,572 ) (2,221 ) Income before income tax and undistributed subsidiary income 15,653 2,481 Income tax (benefit) (1,018 ) (1,498 ) Equity in undistributed subsidiary income 28,682 25,241 Net Income $ 45,353 $ 29,220
Condensed Statements of Cash Flows	CONDENSED STATEMENTS OF CASH FLOWS Years Ended December 31, 2020 2019 Cash flows from operating activities: Net income $ 45,353 $ 29,220 Adjustments: Equity in undistributed subsidiary income (28,682 ) (25,241 ) Amortization of debt issuance costs 47 — Stock based compensation 1,272 853 Change in other assets (342 ) (1,601 ) Change in other liabilities 131 541 Release of unearned ESOP shares — — Net cash from operating activities 17,779 3,772 Cash flows from investing activities: Cash paid in business combination — (76,100 ) Net cash from investing activities — (76,100 ) Cash flows from financing activities: Proceeds from long-term borrowings 49,070 — Repayments of long-term borrowings — (7,530 ) Issuance of common stock — 51,392 Payments to tax authorities for stock-based compensation (319 ) (351 ) Payments to repurchase common stock (293 ) — Share based liability conversion — 11,450 Cash dividends on common stock (2,528 ) (1,079 ) Net cash from financing activities 45,930 53,882 Net change in cash and cash equivalents 63,709 (18,446 ) Beginning cash and cash equivalents 4,181 22,627 Ending cash and cash equivalents $ 67,890 $ 4,181

EARNINGS PER SHARE (Tables)

EARNINGS PER SHARE (Tables)	12 Months Ended
	Dec. 31, 2020
EARNINGS PER SHARE [Abstract]
Factors Used in Earnings Per Share Computation	The factors used in the earnings per share computation follow: December 31, 2020 2019 Net income $ 45,353 $ 29,220 Weighted average common shares outstanding - basic 18,054,373 16,818,697 Weighted average common shares outstanding - diluted 18,339,033 17,040,550 Basic earnings per share $ 2.51 $ 1.74 Diluted earnings per share $ 2.47 $ 1.71

SEGMENT INFORMATION (Tables)

SEGMENT INFORMATION (Tables)	12 Months Ended
	Dec. 31, 2020
SEGMENT INFORMATION [Abstract]
Financial Results by Reportable Segment	Financial results by reportable segment are detailed below: Banking Insurance Consolidated 2020 Net interest income $ 122,285 $ — $ 122,285 Provision for loan loss (25,570 ) — (25,570 ) Noninterest income 94,010 7,593 101,603 Noninterest expense (135,985 ) (5,730 ) (141,715 ) Income before income taxes 54,740 1,863 56,603 Income tax (expense) benefit (10,804 ) (446 ) (11,250 ) Net income $ 43,936 $ 1,417 $ 45,353 Total assets $ 3,584,828 $ 14,332 $ 3,599,160 Banking Insurance Consolidated 2019 Net interest income (expense) $ 104,575 $ — $ 104,575 Provision for loan loss (2,799 ) — (2,799 ) Noninterest income 49,834 6,799 56,633 Noninterest expense (117,160 ) (4,548 ) (121,708 ) Income before income taxes 34,450 2,251 36,701 Income tax (expense) benefit (7,097 ) (384 ) (7,481 ) Net income $ 27,353 $ 1,867 $ 29,220 Total assets $ 3,224,396 $ 12,771 $ 3,237,167

ACCUMULATED OTHER COMPREHENSI_2

ACCUMULATED OTHER COMPREHENSIVE INCOME (Tables)	12 Months Ended
	Dec. 31, 2020
ACCUMULATED OTHER COMPREHENSIVE INCOME [Abstract]
Changes in Accumulated Other Comprehensive Income (Loss) By Component, Net of Tax	The following table details the changes in accumulated other comprehensive income (loss) by component, net of tax: Gains and (Losses) on Cash Flow hedges Unrealized Gains and (Losses) on Securities Available for Sale Total 2020 Beginning balance $ — $ 958 $ 958 Other comprehensive income (loss) before reclassification (60 ) 22,272 22,212 Amounts reclassified from other comprehensive — (1,831 ) (1,831 ) Net current period other comprehensive income (60 ) 20,441 20,381 Ending balance $ (60 ) $ 21,399 $ 21,339 2019 Beginning balance $ — $ (2,243 ) $ (2,243 ) Other comprehensive income before reclassification — 3,179 3,179 Amounts reclassified from other comprehensive — 22 22 Net current period other comprehensive income — 3,201 3,201 Ending balance $ — $ 958 $ 958

FAIR VALUE DISCLOSURES (Tables)

FAIR VALUE DISCLOSURES (Tables)	12 Months Ended
	Dec. 31, 2020
FAIR VALUE DISCLOSURES [Abstract]
Assets (Liabilities) Measured at Fair Value on Recurring and Non-Recurring Basis	The following table summarizes fair value measurements as of December 31: Level 1 Level 2 Level 3 Total 2020 Assets (liabilities) measured at fair value on a recurring basis: Securities available for sale: U.S. government and agencies $ — $ 4,753 $ — $ 4,753 State and municipal — 272,607 — 272,607 Mortgage-backed securities — 373,362 — 373,362 Collateralized mortgage obligations — 106,715 — 106,715 Asset-backed and other amortizing securities — 33,572 — 33,572 Other securities — 12,078 — 12,078 Loans held for sale (mandatory) — 80,174 — 80,174 Mortgage servicing rights — — 9,049 9,049 Asset derivatives — 6,734 — 6,734 Liability derivatives — (4,357 ) — (4,357 ) Assets measured at fair value on a non-recurring basis: Impaired loans — — 11,926 11,926 Other real estate owned — — 1,353 1,353 Level 1 Level 2 Level 3 Total 2019 Assets (liabilities) measured at fair value on a recurring basis: Securities available for sale: U.S. government and agencies $ — $ 4,807 $ — $ 4,807 State and municipal — 94,692 — 94,692 Mortgage-backed securities — 464,516 — 464,516 Collateralized mortgage obligations — 107,289 — 107,289 Asset-backed and other amortizing securities — 36,346 — 36,346 Loans held for sale (mandatory) — 32,809 — 32,809 Mortgage servicing rights — - 2,054 2,054 Asset derivatives — 814 — 814 Liability derivatives — (492 ) — (492 ) Assets measured at fair value on a non-recurring basis: Impaired loans — — 3,642 3,642 Other real estate owned — — 1,883 1,883
Quantitative Information about Non-Recurring Level 3 Fair Value Measurements	The following table presents quantitative information about non-recurring Level 3 fair value measurements at December 31: Fair Value Valuation Techniques Unobservable Inputs Range of Discounts 2020 Impaired loans $ 11,926 Third party appraisals or inspections Collateral discounts and selling costs 0% -100 % Other real estate owned 1,353 Third party appraisals or inspections Collateral discounts and selling costs 15% -66 % Mortgage servicing rights 9,049 Discounted cash flows Conditional prepayment rate 4.48 % Discount rate 9.72 % 2019 Impaired loans $ 3,642 Third party appraisals or inspections Collateral discounts and selling costs 0% -100 % Other real estate owned 1,883 Third party appraisals or inspections Collateral discounts and selling costs 15% -66 % Mortgage servicing rights 2,054 Discounted cash flows Conditional prepayment rate 5.23 % Discount rate 10.78 %
Summary of Carrying Amounts of Financial Instruments	The following table summarizes carrying value measurements as of December 31: Carrying Amount Level 1 Level 2 Level 3 Total 2020 Financial assets: Cash and cash equivalents $ 300,307 $ 300,307 $ — $ — $ 300,307 Loans, net 2,176,030 — — 2,179,573 2,179,573 Accrued interest receivable 15,233 — 15,233 — 15,233 Bank-owned life insurance 70,731 — 70,731 — 70,731 Financial liabilities: Deposits 2,974,351 2,649,830 329,609 — 2,979,439 Accrued interest payable 2,113 — 2,113 — 2,113 Notes payable & other borrowings 75,000 — 75,000 — 75,000 Junior subordinated deferrable interest debentures 46,393 — 45,690 — 45,690 Subordinated debt securities 75,589 — 76,889 — 76,889 Carrying Amount Level 1 Level 2 Level 3 Total 2019 Financial assets: Cash and cash equivalents $ 158,099 $ 158,099 $ — $ — $ 158,099 Loans, net 2,119,426 — — 2,123,289 2,123,289 Accrued interest receivable 13,924 — 13,924 — 13,924 Bank-owned life insurance 69,397 — 69,397 — 69,397 Financial liabilities: Deposits 2,696,857 2,354,999 346,194 — 2,701,193 Accrued interest payable 2,283 — 2,283 — 2,283 Notes payable & other borrowings 95,000 — 95,000 — 95,000 Junior subordinated deferrable interest debentures 46,393 — 46,393 — 46,393 Subordinated debt securities 26,472 — 26,472 — 26,472

BUSINESS COMBINATIONS (Tables)

BUSINESS COMBINATIONS (Tables)	12 Months Ended
	Dec. 31, 2020
West Texas State Bank [Member]
Business Combinations [Abstract]
Fair Value of the Assets Acquired and Liabilities Assumed	Fair values of the assets acquired and liabilities assumed in this transaction as of the closing date are as follows: Cash paid $ 76,100 Assets acquired: Cash and cash equivalents $ 77,903 Interest-bearing time deposits in banks 52,700 Federal funds purchased 26,468 Securities available for sale 68,398 Loans held for investment 195,228 Bank-owned life insurance 10,932 Premises and equipment, net 4,132 Accrued interest receivable 1,114 Core deposit intangible 6,679 Other assets 2,648 Total assets acquired $ 446,202 Liabilities assumed Deposits $ 386,176 Accrued interest payable 55 Deferred tax liability 762 Other liabilities 2,424 Total liabilities assumed $ 389,417 Net assets acquired $ 56,785 Goodwill recorded in acquisition $ 19,315
Windmark Insurance Agency, Inc. [Member] | Crop Insurance Agency in Texas [Member]
Business Combinations [Abstract]
Fair Value of the Assets Acquired and Liabilities Assumed	Fair value of the assets acquired and liabilities assumed in this transaction as of the closing date are as follows: Cash paid $ 2,800 Assets acquired: Premises and equipment, net $ 8 Customer list 1,800 Other intangible assets 509 Other assets 290 Total assets acquired $ 2,607 Goodwill recorded in acquisition $ 193 In June 2020, Windmark acquired the operating assets of a crop insurance agency in Nebraska for $687 thousand. Fair value of the assets acquired in this transaction as of the closing date are as follows: Cash paid $ 687 Assets acquired: Premises and equipment, net $ 24 Customer list 512 Other intangible assets 151 Total assets acquired $ 687 Goodwill recorded in acquisition $ —

SUMMARY OF SIGNIFICANT ACCOUN_4

SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES (Details) $ / shares in Units, $ in Thousands	Mar. 11, 2019$ / sharesshares	May 31, 2019USD ($)$ / sharesshares	Dec. 31, 2020USD ($)Segment$ / sharesshares	Dec. 31, 2019USD ($)$ / sharesshares	Mar. 10, 2019shares	Dec. 31, 2018USD ($)
Change in Capital Structure [Abstract]
Number of shares of common stock authorized (in shares) | shares	30,000,000		30,000,000	30,000,000	1,000,000
Common stock, par value (in dollars per share) | $ / shares	$ 1		$ 1	$ 1
Stock split ratio	29
Loans [Abstract]
Number of days principal or interest payments are past due for loans to be placed on nonaccrual status			90 days
Goodwill and Other Intangible Assets [Abstract]
Impairment loss			$ 0	$ 0
Mortgage Banking Derivatives [Abstract]
Recorded value of interest locks at inception			0
Recorded value of forward loan sales commitments at inception			0
Advertising [Abstract]
Advertising costs			$ 2,600	2,200
Segment Information [Abstract]
Number of reportable segments | Segment			2
Change in Accounting Principle [Abstract]
Cumulative-effect adjustment to retained earnings, net			$ 189,521	$ 146,696
Minimum [Member]
Allowance for Loan Losses [Abstract]
Threshold balance of loan to be specifically reviewed for impairment			$ 250
Cumulative Effect, Period of Adoption, Adjustment [Member]
Change in Accounting Principle [Abstract]
Cumulative-effect adjustment to retained earnings, net						$ 1,300
Cumulative-effect adjustment to retained earnings, before tax						1,600
Cumulative-effect adjustment to retained earnings, tax						340
City Bank [Member] | Bank Subsidiary [Member]
Subsidiaries Information [Abstract]
Wholly Owned, Consolidated Subsidiaries			City Bank
Windmark Insurance Agency, Inc. ("Windmark") [Member] | Non-bank Subsidiary [Member]
Subsidiaries Information [Abstract]
Wholly Owned, Consolidated Subsidiaries			Windmark Insurance Agency, Inc.
Ruidoso Retail, Inc. [Member] | Non-bank Subsidiary [Member]
Subsidiaries Information [Abstract]
Wholly Owned, Consolidated Subsidiaries			Ruidoso Retail, Inc.
CB Provence, LLC [Member] | Non-bank Subsidiary [Member]
Subsidiaries Information [Abstract]
Wholly Owned, Consolidated Subsidiaries			CB Provence, LLC
CBT Brushy Creek, LLC [Member] | Non-bank Subsidiary [Member]
Subsidiaries Information [Abstract]
Wholly Owned, Consolidated Subsidiaries			CBT Brushy Creek, LLC
CBT Properties, LLC [Member] | Non-bank Subsidiary [Member]
Subsidiaries Information [Abstract]
Wholly Owned, Consolidated Subsidiaries			CBT Properties, LLC
South Plains Financial Capital Trusts (SPFCT) III-V [Member] | Non-bank Subsidiary [Member]
Subsidiaries Information [Abstract]
Wholly Owned, Equity Method Subsidiaries			South Plains Financial Capital Trusts (SPFCT) III-V
Core Deposits Intangible [Member] | Maximum [Member]
Goodwill and Other Intangible Assets [Abstract]
Estimated useful lives			10 years
Customer Relationships [Member]
Goodwill and Other Intangible Assets [Abstract]
Estimated useful lives			5 years
Employment Agreements [Member]
Goodwill and Other Intangible Assets [Abstract]
Estimated useful lives			5 years
Initial Public Offering [Member]
Stock Offering [Abstract]
Issuance of common stock, net (in shares) | shares		3,207,000
Common stock sold to underwriters (in shares) | shares		507,000
Offering price (in dollars per share) | $ / shares		$ 17.50
Aggregate gross proceeds from initial public offering		$ 56,100
Aggregate net proceeds from initial public offering		$ 51,400
Building and Improvements [Member] | Maximum [Member]
Premises and Equipment [Abstract]
Useful life			40 years
Furniture and Equipment [Member] | Minimum [Member]
Premises and Equipment [Abstract]
Useful life			3 years
Furniture and Equipment [Member] | Maximum [Member]
Premises and Equipment [Abstract]
Useful life			10 years
Substandard or Worse [Member] | Minimum [Member]
Allowance for Loan Losses [Abstract]
Threshold balance of loan to be specifically reviewed for impairment			$ 250
Stock Appreciation Rights (SARs) [Member]
Change in Accounting Principle [Abstract]
Fair value in excess of recorded intrinsic value						$ 1,600

SECURITIES, Available for Sale

SECURITIES, Available for Sale (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Available for sale [Abstract]
Amortized cost	$ 775,999	$ 706,437
Gross unrealized gains	27,875	5,412
Gross unrealized losses	(787)	(4,199)
Fair value	803,087	707,650
U.S. Government and Agencies [Member]
Available for sale [Abstract]
Amortized cost	4,750	4,750
Gross unrealized gains	3	57
Gross unrealized losses	0	0
Fair value	4,753	4,807
State and Municipal [Member]
Available for sale [Abstract]
Amortized cost	261,023	94,512
Gross unrealized gains	11,704	1,091
Gross unrealized losses	(120)	(911)
Fair value	272,607	94,692
Mortgage-backed Securities [Member]
Available for sale [Abstract]
Amortized cost	359,542	463,899
Gross unrealized gains	14,014	3,727
Gross unrealized losses	(194)	(3,110)
Fair value	373,362	464,516
Collateralized Mortgage Obligations [Member]
Available for sale [Abstract]
Amortized cost	107,175	107,443
Gross unrealized gains	0	15
Gross unrealized losses	(460)	(169)
Fair value	106,715	107,289
Asset-backed and Other Amortizing Securities [Member]
Available for sale [Abstract]
Amortized cost	31,509	35,833
Gross unrealized gains	2,063	522
Gross unrealized losses	0	(9)
Fair value	33,572	$ 36,346
Other Securities [Member]
Available for sale [Abstract]
Amortized cost	12,000
Gross unrealized gains	91
Gross unrealized losses	(13)
Fair value	$ 12,078

SECURITIES, Amortized Cost and

SECURITIES, Amortized Cost and Fair Value of Securities by Contractual Maturity (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Available for Sale, Amortized Cost [Abstract]
Within 1 year	$ 6,731
After 1 year through 5 years	3,398
After 5 years through 10 years	26,079
After 10 years	241,565
Other	498,226
Amortized cost	775,999	$ 706,437
Available for Sale, Fair Value [Abstract]
Within 1 year	6,761
After 1 year through 5 years	3,585
After 5 years through 10 years	26,959
After 10 years	252,133
Other	513,649
Fair value	$ 803,087	$ 707,650

SECURITIES, Securities Transfer

SECURITIES, Securities Transferred and Securities Pledged (Details) $ in Millions	12 Months Ended
	Dec. 31, 2020USD ($)Security	Dec. 31, 2019USD ($)Security
SECURITIES [Abstract]
Holdings of securities of any one issuer, other than the U.S. government and its agencies, in an amount greater than 10% of stockholders' equity | Security	0	0
Carrying value of securities pledged to collateralize public deposits and for other purposes | $	$ 292.2	$ 211.3

SECURITIES, Securities with Unr

SECURITIES, Securities with Unrealized Losses, Available for Sale (Details) $ in Thousands	Dec. 31, 2020USD ($)Security	Dec. 31, 2019USD ($)
Available for sale, Fair Value [Abstract]
Less than 12 months	$ 203,683	$ 405,209
12 months or more	0	5,048
Total	203,683	410,257
Available for sale, Unrealized Loss [Abstract]
Less than 12 months	787	4,158
12 months or more	0	41
Total	$ 787	4,199
Number of securities with an unrealized loss | Security	11
U.S. Government and Agencies [Member]
Available for sale, Fair Value [Abstract]
Less than 12 months	$ 0	0
12 months or more	0	0
Total	0	0
Available for sale, Unrealized Loss [Abstract]
Less than 12 months	0	0
12 months or more	0	0
Total	0	0
State and Municipal [Member]
Available for sale, Fair Value [Abstract]
Less than 12 months	0	58,389
12 months or more	0	387
Total	0	58,776
Available for sale, Unrealized Loss [Abstract]
Less than 12 months	120	910
12 months or more	0	1
Total	120	911
Mortgage-backed Securities [Member]
Available for sale, Fair Value [Abstract]
Less than 12 months	93,482	284,120
12 months or more	0	4,661
Total	93,482	288,781
Available for sale, Unrealized Loss [Abstract]
Less than 12 months	194	3,071
12 months or more	0	40
Total	194	3,111
Collateralized Mortgage Obligations [Member]
Available for sale, Fair Value [Abstract]
Less than 12 months	106,715	60,039
12 months or more	0	0
Total	106,715	60,039
Available for sale, Unrealized Loss [Abstract]
Less than 12 months	460	168
12 months or more	0	0
Total	460	168
Asset-backed and Other Amortizing Securities [Member]
Available for sale, Fair Value [Abstract]
Less than 12 months	3,486	2,661
12 months or more	0	0
Total	3,486	2,661
Available for sale, Unrealized Loss [Abstract]
Less than 12 months	0	9
12 months or more	0	0
Total	0	$ 9
Other Securities [Member]
Available for sale, Fair Value [Abstract]
Less than 12 months	0
12 months or more	0
Total	0
Available for sale, Unrealized Loss [Abstract]
Less than 12 months	13
12 months or more	0
Total	$ 13

LOANS HELD FOR INVESTMENT, Summ

LOANS HELD FOR INVESTMENT, Summary of Loans by Category (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)Category	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Summary of Loans by Category [Abstract]
Loans, gross	$ 2,221,583	$ 2,143,623
Allowance for loan losses	(45,553)	(24,197)	$ (23,126)
Loans, net	2,176,030	2,119,426
Commercial Real Estate [Member]
Summary of Loans by Category [Abstract]
Loans, gross	663,344	658,195
Allowance for loan losses	$ (18,962)	(5,049)	(5,579)
Commercial [Member]
Summary of Loans by Category [Abstract]
Number of sub-categories of loans | Category	2
Commercial [Member] | Specialized [Member]
Summary of Loans by Category [Abstract]
Loans, gross	$ 311,686	309,505
Allowance for loan losses	(5,760)	(2,287)	(2,516)
Commercial [Member] | General [Member]
Summary of Loans by Category [Abstract]
Loans, gross	518,309	441,398
Allowance for loan losses	(9,227)	(9,609)	(8,173)
Consumer [Member] | 1-4 Family Residential [Member]
Summary of Loans by Category [Abstract]
Loans, gross	360,315	362,796
Allowance for loan losses	(4,646)	(2,093)	(2,249)
Consumer [Member] | Auto Loans [Member]
Summary of Loans by Category [Abstract]
Loans, gross	205,840	215,209
Allowance for loan losses	(4,226)	(3,385)	(2,994)
Consumer [Member] | Other Consumer [Member]
Summary of Loans by Category [Abstract]
Loans, gross	67,595	74,000
Allowance for loan losses	(1,671)	(1,341)	(1,192)
Construction [Member]
Summary of Loans by Category [Abstract]
Loans, gross	94,494	82,520
Allowance for loan losses	$ (1,061)	$ (433)	$ (423)

LOANS HELD FOR INVESTMENT, Acti

LOANS HELD FOR INVESTMENT, Activity in Allowance for Loan Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
LOANS HELD FOR INVESTMENT [Abstract]
Percentage of allowance for loan losses to loans held for investment	2.05%	1.13%
Allowance for Loan Losses [Roll Forward]
Beginning Balance	$ 24,197	$ 23,126
Provision for Loan Losses	25,570	2,799
Charge-offs	(5,559)	(3,273)
Recoveries	1,345	1,545
Ending Balance	45,553	24,197
Commercial Real Estate [Member]
Allowance for Loan Losses [Roll Forward]
Beginning Balance	5,049	5,579
Provision for Loan Losses	13,618	(961)
Charge-offs	(7)	0
Recoveries	302	431
Ending Balance	18,962	5,049
Commercial [Member] | Specialized [Member]
Allowance for Loan Losses [Roll Forward]
Beginning Balance	2,287	2,516
Provision for Loan Losses	4,514	2
Charge-offs	(1,162)	(355)
Recoveries	121	124
Ending Balance	5,760	2,287
Commercial [Member] | General [Member]
Allowance for Loan Losses [Roll Forward]
Beginning Balance	9,609	8,173
Provision for Loan Losses	1,219	1,209
Charge-offs	(1,811)	(306)
Recoveries	210	533
Ending Balance	9,227	9,609
Consumer [Member] | 1-4 Family Residential [Member]
Allowance for Loan Losses [Roll Forward]
Beginning Balance	2,093	2,249
Provision for Loan Losses	2,478	219
Charge-offs	(56)	(436)
Recoveries	131	61
Ending Balance	4,646	2,093
Consumer [Member] | Auto Loans [Member]
Allowance for Loan Losses [Roll Forward]
Beginning Balance	3,385	2,994
Provision for Loan Losses	1,814	1,276
Charge-offs	(1,165)	(1,067)
Recoveries	192	182
Ending Balance	4,226	3,385
Consumer [Member] | Other Consumer [Member]
Allowance for Loan Losses [Roll Forward]
Beginning Balance	1,341	1,192
Provision for Loan Losses	1,300	969
Charge-offs	(1,358)	(1,034)
Recoveries	388	214
Ending Balance	1,671	1,341
Construction [Member]
Allowance for Loan Losses [Roll Forward]
Beginning Balance	433	423
Provision for Loan Losses	627	85
Charge-offs	0	(75)
Recoveries	1	0
Ending Balance	$ 1,061	$ 433

LOANS HELD FOR INVESTMENT, Inve

LOANS HELD FOR INVESTMENT, Investment in loans Disaggregated Based on Method of Evaluating Impairment (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Recorded Investment [Abstract]
Individually Evaluated	$ 13,021	$ 4,167
Collectively Evaluated	2,208,562	2,139,456
Allowance for Loan Losses [Abstract]
Individually Evaluated	1,095	525
Collectively Evaluated	44,458	23,672
Commercial Real Estate [Member]
Recorded Investment [Abstract]
Individually Evaluated	6,273	299
Collectively Evaluated	657,071	657,896
Allowance for Loan Losses [Abstract]
Individually Evaluated	580	0
Collectively Evaluated	18,382	5,049
Commercial [Member] | Specialized [Member]
Recorded Investment [Abstract]
Individually Evaluated	0	573
Collectively Evaluated	311,686	308,932
Allowance for Loan Losses [Abstract]
Individually Evaluated	0	0
Collectively Evaluated	5,760	2,287
Commercial [Member] | General [Member]
Recorded Investment [Abstract]
Individually Evaluated	4,626	1,396
Collectively Evaluated	513,683	440,002
Allowance for Loan Losses [Abstract]
Individually Evaluated	515	525
Collectively Evaluated	8,712	9,084
Consumer [Member] | 1-4 Family Residential [Member]
Recorded Investment [Abstract]
Individually Evaluated	2,122	1,899
Collectively Evaluated	358,193	360,897
Allowance for Loan Losses [Abstract]
Individually Evaluated	0	0
Collectively Evaluated	4,646	2,093
Consumer [Member] | Auto Loans [Member]
Recorded Investment [Abstract]
Individually Evaluated	0	0
Collectively Evaluated	205,840	215,209
Allowance for Loan Losses [Abstract]
Individually Evaluated	0	0
Collectively Evaluated	4,226	3,385
Consumer [Member] | Other Consumer [Member]
Recorded Investment [Abstract]
Individually Evaluated	0	0
Collectively Evaluated	67,595	74,000
Allowance for Loan Losses [Abstract]
Individually Evaluated	0	0
Collectively Evaluated	1,671	1,341
Construction [Member]
Recorded Investment [Abstract]
Individually Evaluated	0	0
Collectively Evaluated	94,494	82,520
Allowance for Loan Losses [Abstract]
Individually Evaluated	0	0
Collectively Evaluated	$ 1,061	$ 433

LOANS HELD FOR INVESTMENT, Impa

LOANS HELD FOR INVESTMENT, Impaired Loan Information (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Impaired Loan Information [Abstract]
Unpaid Contractual Principal Balance	$ 13,440	$ 5,484
Recorded Investment [Abstract]
Recorded Investment With No Allowance	9,159	2,771
Recorded Investment With Allowance	3,862	1,396
Total Recorded Investment	13,021	4,167
Related Allowance	1,095	525
Average Recorded Investment	9,894	6,764
Minimum [Member]
Recorded Investment [Abstract]
Threshold balance of loan to be specifically reviewed for impairment	250
Commercial Real Estate [Member]
Impaired Loan Information [Abstract]
Unpaid Contractual Principal Balance	6,273	754
Recorded Investment [Abstract]
Recorded Investment With No Allowance	3,673	299
Recorded Investment With Allowance	2,600	0
Total Recorded Investment	6,273	299
Related Allowance	580	0
Average Recorded Investment	3,666	1,059
Commercial [Member] | Specialized [Member]
Impaired Loan Information [Abstract]
Unpaid Contractual Principal Balance	0	573
Recorded Investment [Abstract]
Recorded Investment With No Allowance	0	573
Recorded Investment With Allowance	0	0
Total Recorded Investment	0	573
Related Allowance	0	0
Average Recorded Investment	673	1,345
Commercial [Member] | General [Member]
Impaired Loan Information [Abstract]
Unpaid Contractual Principal Balance	4,626	1,839
Recorded Investment [Abstract]
Recorded Investment With No Allowance	3,364	0
Recorded Investment With Allowance	1,262	1,396
Total Recorded Investment	4,626	1,396
Related Allowance	515	525
Average Recorded Investment	3,400	2,173
Consumer [Member] | 1-4 Family [Member]
Impaired Loan Information [Abstract]
Unpaid Contractual Principal Balance	2,541	2,318
Recorded Investment [Abstract]
Recorded Investment With No Allowance	2,122	1,899
Recorded Investment With Allowance	0	0
Total Recorded Investment	2,122	1,899
Related Allowance	0	0
Average Recorded Investment	2,155	2,187
Consumer [Member] | Auto Loans [Member]
Impaired Loan Information [Abstract]
Unpaid Contractual Principal Balance	0	0
Recorded Investment [Abstract]
Recorded Investment With No Allowance	0	0
Recorded Investment With Allowance	0	0
Total Recorded Investment	0	0
Related Allowance	0	0
Average Recorded Investment	0	0
Consumer [Member] | Other Consumer [Member]
Impaired Loan Information [Abstract]
Unpaid Contractual Principal Balance	0	0
Recorded Investment [Abstract]
Recorded Investment With No Allowance	0	0
Recorded Investment With Allowance	0	0
Total Recorded Investment	0	0
Related Allowance	0	0
Average Recorded Investment	0	0
Construction [Member]
Impaired Loan Information [Abstract]
Unpaid Contractual Principal Balance	0	0
Recorded Investment [Abstract]
Recorded Investment With No Allowance	0	0
Recorded Investment With Allowance	0	0
Total Recorded Investment	0	0
Related Allowance	0	0
Average Recorded Investment	$ 0	$ 0

LOANS HELD FOR INVESTMENT, Age

LOANS HELD FOR INVESTMENT, Age Analysis on Accruing Past-due Loans and Nonaccrual Loans (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2020USD ($)Point	Dec. 31, 2019USD ($)
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Nonaccrual	$ 13,718	$ 4,693
Number of points on a grading scale for loans | Point	13
30-89 Days Past Due [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	$ 6,560	7,179
90 Days or More Past Due [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	1,246	1,352
Commercial Real Estate [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Nonaccrual	6,311	162
Commercial Real Estate [Member] | 30-89 Days Past Due [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	914	37
Commercial Real Estate [Member] | 90 Days or More Past Due [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	34	116
Commercial [Member] | Specialized [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Nonaccrual	272	1,172
Commercial [Member] | Specialized [Member] | 30-89 Days Past Due [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	241	708
Commercial [Member] | Specialized [Member] | 90 Days or More Past Due [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	0	0
Commercial [Member] | General [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Nonaccrual	5,489	2,254
Commercial [Member] | General [Member] | 30-89 Days Past Due [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	1,891	1,747
Commercial [Member] | General [Member] | 90 Days or More Past Due [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	149	0
Consumer [Member] | 1-4 Family Residential [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Nonaccrual	1,595	1,105
Consumer [Member] | 1-4 Family Residential [Member] | 30-89 Days Past Due [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	2,089	1,212
Consumer [Member] | 1-4 Family Residential [Member] | 90 Days or More Past Due [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	906	932
Consumer [Member] | Auto Loans [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Nonaccrual	0	0
Consumer [Member] | Auto Loans [Member] | 30-89 Days Past Due [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	738	1,468
Consumer [Member] | Auto Loans [Member] | 90 Days or More Past Due [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	38	183
Consumer [Member] | Other Consumer [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Nonaccrual	51	0
Consumer [Member] | Other Consumer [Member] | 30-89 Days Past Due [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	481	848
Consumer [Member] | Other Consumer [Member] | 90 Days or More Past Due [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	119	121
Construction [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Nonaccrual	0	0
Construction [Member] | 30-89 Days Past Due [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	206	1,159
Construction [Member] | 90 Days or More Past Due [Member]
Age Analysis on Accruing Past-due Loans and Nonaccrual Loans [Abstract]
Past Due	$ 0	$ 0

LOANS HELD FOR INVESTMENT, Su_2

LOANS HELD FOR INVESTMENT, Summary of Internal Classifications of Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Loans by Internal Classifications [Abstract]
Loans	$ 2,221,583	$ 2,143,623
Pass [Member]
Loans by Internal Classifications [Abstract]
Loans	2,135,565	2,095,056
Special Mention [Member]
Loans by Internal Classifications [Abstract]
Loans	0	22,313
Substandard [Member]
Loans by Internal Classifications [Abstract]
Loans	86,018	26,254
Doubtful [Member]
Loans by Internal Classifications [Abstract]
Loans	0	0
Commercial Real Estate [Member]
Loans by Internal Classifications [Abstract]
Loans	663,344	658,195
Commercial Real Estate [Member] | Pass [Member]
Loans by Internal Classifications [Abstract]
Loans	602,250	632,641
Commercial Real Estate [Member] | Special Mention [Member]
Loans by Internal Classifications [Abstract]
Loans	0	22,313
Commercial Real Estate [Member] | Substandard [Member]
Loans by Internal Classifications [Abstract]
Loans	61,094	3,241
Commercial Real Estate [Member] | Doubtful [Member]
Loans by Internal Classifications [Abstract]
Loans	0	0
Commercial [Member] | Specialized [Member]
Loans by Internal Classifications [Abstract]
Loans	311,686	309,505
Commercial [Member] | Specialized [Member] | Pass [Member]
Loans by Internal Classifications [Abstract]
Loans	303,831	307,239
Commercial [Member] | Specialized [Member] | Special Mention [Member]
Loans by Internal Classifications [Abstract]
Loans	0	0
Commercial [Member] | Specialized [Member] | Substandard [Member]
Loans by Internal Classifications [Abstract]
Loans	7,855	2,266
Commercial [Member] | Specialized [Member] | Doubtful [Member]
Loans by Internal Classifications [Abstract]
Loans	0	0
Commercial [Member] | General [Member]
Loans by Internal Classifications [Abstract]
Loans	518,309	441,398
Commercial [Member] | General [Member] | Pass [Member]
Loans by Internal Classifications [Abstract]
Loans	510,543	428,155
Commercial [Member] | General [Member] | Special Mention [Member]
Loans by Internal Classifications [Abstract]
Loans	0	0
Commercial [Member] | General [Member] | Substandard [Member]
Loans by Internal Classifications [Abstract]
Loans	7,766	13,243
Commercial [Member] | General [Member] | Doubtful [Member]
Loans by Internal Classifications [Abstract]
Loans	0	0
Consumer [Member] | 1-4 Family Residential [Member]
Loans by Internal Classifications [Abstract]
Loans	360,315	362,796
Consumer [Member] | 1-4 Family Residential [Member] | Pass [Member]
Loans by Internal Classifications [Abstract]
Loans	352,930	356,422
Consumer [Member] | 1-4 Family Residential [Member] | Special Mention [Member]
Loans by Internal Classifications [Abstract]
Loans	0	0
Consumer [Member] | 1-4 Family Residential [Member] | Substandard [Member]
Loans by Internal Classifications [Abstract]
Loans	7,385	6,374
Consumer [Member] | 1-4 Family Residential [Member] | Doubtful [Member]
Loans by Internal Classifications [Abstract]
Loans	0	0
Consumer [Member] | Auto Loans [Member]
Loans by Internal Classifications [Abstract]
Loans	205,840	215,209
Consumer [Member] | Auto Loans [Member] | Pass [Member]
Loans by Internal Classifications [Abstract]
Loans	204,301	214,363
Consumer [Member] | Auto Loans [Member] | Special Mention [Member]
Loans by Internal Classifications [Abstract]
Loans	0	0
Consumer [Member] | Auto Loans [Member] | Substandard [Member]
Loans by Internal Classifications [Abstract]
Loans	1,539	846
Consumer [Member] | Auto Loans [Member] | Doubtful [Member]
Loans by Internal Classifications [Abstract]
Loans	0	0
Consumer [Member] | Other Consumer [Member]
Loans by Internal Classifications [Abstract]
Loans	67,595	74,000
Consumer [Member] | Other Consumer [Member] | Pass [Member]
Loans by Internal Classifications [Abstract]
Loans	67,216	73,716
Consumer [Member] | Other Consumer [Member] | Special Mention [Member]
Loans by Internal Classifications [Abstract]
Loans	0	0
Consumer [Member] | Other Consumer [Member] | Substandard [Member]
Loans by Internal Classifications [Abstract]
Loans	379	284
Consumer [Member] | Other Consumer [Member] | Doubtful [Member]
Loans by Internal Classifications [Abstract]
Loans	0	0
Construction [Member]
Loans by Internal Classifications [Abstract]
Loans	94,494	82,520
Construction [Member] | Pass [Member]
Loans by Internal Classifications [Abstract]
Loans	94,494	82,520
Construction [Member] | Special Mention [Member]
Loans by Internal Classifications [Abstract]
Loans	0	0
Construction [Member] | Substandard [Member]
Loans by Internal Classifications [Abstract]
Loans	0	0
Construction [Member] | Doubtful [Member]
Loans by Internal Classifications [Abstract]
Loans	$ 0	$ 0

LOANS HELD FOR INVESTMENT, COVI

LOANS HELD FOR INVESTMENT, COVID-19 Related Deferral and Modification (Details) $ in Millions	12 Months Ended
	Dec. 31, 2020USD ($)Loan	Dec. 31, 2019USD ($)
CARES Act [Abstract]
TDRs	$ 0	$ 0
Covid-19 [Member]
CARES Act [Abstract]
Percentage of loans modified under CARES Act	2.75%
Number of outstanding loans subject to deferral and modification agreements | Loan	25
Amount of outstanding loans subject to deferral and modification agreements	$ 61
Covid-19 [Member] | Short-term Deferral Modification Program [Member]
CARES Act [Abstract]
Amount of outstanding principal balance of loans modified under CARES Act	$ 3
Percentage of loans modified under CARES Act	0.14%
Commercial [Member] | Covid-19 [Member] | Short-term Deferral Modification Program [Member] | Interest-Only Payment [Member]
CARES Act [Abstract]
Amount of outstanding principal balance of loans modified under CARES Act	$ 1
Period of loan modification	6 months
Commercial [Member] | Covid-19 [Member] | Short-term Deferral Modification Program [Member] | Payment Deferrals [Member]
CARES Act [Abstract]
Amount of outstanding principal balance of loans modified under CARES Act	$ 0.3
Period of loan modification	90 days
Consumer [Member] | Covid-19 [Member] | Short-term Deferral Modification Program [Member] | Payment Deferrals [Member]
CARES Act [Abstract]
Amount of outstanding principal balance of loans modified under CARES Act	$ 1.7
Consumer [Member] | Covid-19 [Member] | Short-term Deferral Modification Program [Member] | Payment Deferrals [Member] | Minimum [Member]
CARES Act [Abstract]
Period of loan modification	1 year
Consumer [Member] | Covid-19 [Member] | Short-term Deferral Modification Program [Member] | Payment Deferrals [Member] | Maximum [Member]
CARES Act [Abstract]
Period of loan modification	4 years

FORECLOSED ASSETS, Foreclosed A

FORECLOSED ASSETS, Foreclosed Assets Activity (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Foreclosed Assets [Roll Forward]
Beginning balance	$ 1,883	$ 2,285
Additions	1,867	3,469
Sales, net	(2,397)	(3,871)
Current year valuation write-down	0	0
Ending balance	$ 1,353	$ 1,883

FORECLOSED ASSETS, Activity in

FORECLOSED ASSETS, Activity in Valuation Allowance (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Activity in Valuation Allowance [Roll Forward]
Beginning balance	$ 0	$ 325
Current year valuation write-down	0	0
Reductions from sales	0	(325)
Ending balance	$ 0	$ 0

FORECLOSED ASSETS, Net Expenses

FORECLOSED ASSETS, Net Expenses Related to Foreclosed Assets (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Net expenses related to foreclosed assets [Abstract]
Net gain (loss) on sales	$ 40	$ (37)
Current year valuation write-down	0	0
Operating expenses, net of rental income	(75)	(71)
Foreclosed assets expense, net	$ (35)	$ (108)

PREMISES AND EQUIPMENT (Details

PREMISES AND EQUIPMENT (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Premises and Equipment [Abstract]
Premises and equipment, gross	$ 123,137	$ 120,231
Less accumulated depreciation	(62,806)	(58,358)
Premises and equipment, net	60,331	61,873
Depreciation expense	4,800	4,900
Land [Member]
Premises and Equipment [Abstract]
Premises and equipment, gross	10,825	10,825
Buildings and Improvements [Member]
Premises and Equipment [Abstract]
Premises and equipment, gross	65,840	63,972
Furniture and Equipment [Member]
Premises and Equipment [Abstract]
Premises and equipment, gross	46,443	44,460
Construction in Process [Member]
Premises and Equipment [Abstract]
Premises and equipment, gross	$ 29	$ 974

GOODWILL AND INTANGIBLES (Detai

GOODWILL AND INTANGIBLES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Goodwill and Other Intangible Assets [Abstract]
Beginning goodwill	$ 18,757	$ 0
Arising from business combinations	0	18,757
Measurement period acquisition adjustment	751	0
Ending goodwill	19,508	18,757
Amortized Intangible Assets [Abstract]
Other intangible assets, net	7,562	8,632
Amortization expense of other intangibles	1,700	356
Estimated Amount of Amortization Expense to Be Recognized over Next Five Years [Abstract]
2021	1,667
2022	1,546
2023	1,424
2024	1,149
2025	642
CDI [Member]
Amortized Intangible Assets [Abstract]
Other intangible assets, gross	6,679	6,679
Less: Accumulated amortization	(1,396)	(202)
Other intangible assets, net	5,283	6,477
Estimated Amount of Amortization Expense to Be Recognized over Next Five Years [Abstract]
2021	1,073
2022	951
2023	830
2024	708
2025	587
Other Intangibles [Member]
Amortized Intangible Assets [Abstract]
Other intangible assets, gross	2,309	2,309
Arising from business combinations	663	0
Less: Accumulated amortization	(693)	(154)
Other intangible assets, net	2,279	$ 2,155
Estimated Amount of Amortization Expense to Be Recognized over Next Five Years [Abstract]
2021	594
2022	595
2023	594
2024	441
2025	$ 55

MORTGAGE SERVICING RIGHTS (Deta

MORTGAGE SERVICING RIGHTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Mortgage Servicing Rights Asset [Roll Forward]
Beginning balance	$ 2,054	$ 1,270
Additions	9,829	1,332
Valuation adjustment, net of amortization	(2,834)	(548)
Ending balance	9,049	2,054
Mortgage Servicing Rights Other Information [Abstract]
Mortgage loans serviced for others	$ 1,203,687	$ 247,326
Mortgage servicing right asset as a percentage of serviced mortgage loans	1.00%	1.00%
Key Assumptions Used in Measuring Fair Value of Mortgage Servicing Rights [Abstract]
Weighted average constant prepayment rate	4.48%	5.23%
Weighted average discount rate	9.72%	10.78%
Weighted average life in years	7 years	10 years

DEPOSITS (Details)

DEPOSITS (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
DEPOSITS [Abstract]
Time deposit meeting or exceeding FDIC Insurance limit of $250,000	$ 147,000	$ 147,000
Maturities of Time Deposits [Abstract]
2021	187,976
2022	83,077
2023	45,218
2024	6,293
2025	2,927
Thereafter	10
Total	$ 325,501

BORROWING ARRANGEMENTS, Short-t

BORROWING ARRANGEMENTS, Short-term Borrowings (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Short-term borrowings [Abstract]
Total	$ 26,550	$ 37,165
Federal Funds Purchased [Member]
Short-term borrowings [Abstract]
Total	$ 26,550	17,165
Short-term borrowings, maturity period	1 day
FHLB Advances - Short-Term [Member]
Short-term borrowings [Abstract]
Total	$ 0	$ 20,000

BORROWING ARRANGEMENTS, Lines o

BORROWING ARRANGEMENTS, Lines of Credit (Details) - USD ($) $ in Millions	Dec. 31, 2020	Dec. 31, 2019
Line of Credit Facility [Abstract]
Carrying amount of FHLB stock	$ 2.8
FHLB stock, available borrowing capacity	512.5	$ 394.3
Bank Subsidiary [Member] | Federal Reserve Bank of Dallas (FRB) [Member]
Line of Credit Facility [Abstract]
Line of credit, current borrowing capacity	700.8	547
Bank Subsidiary [Member] | Multiple Banks [Member]
Line of Credit Facility [Abstract]
Line of credit, current borrowing capacity	$ 165	$ 135

BORROWING ARRANGEMENTS, Notes P

BORROWING ARRANGEMENTS, Notes Payable and Other Borrowings (Details) - USD ($) $ in Thousands	1 Months Ended	12 Months Ended
	Jul. 31, 2020	Dec. 31, 2020	Dec. 31, 2019	Apr. 30, 2020
Notes Payable and Other Borrowings [Abstract]
Payments made on notes payable and other borrowings		$ 95,000	$ 7,530
Federal Home Loan Bank Advance [Member]
Detail of Advances from FHLB [Abstract]
Original amount of advances		95,000
Balance		$ 75,000	95,000
Federal Home Loan Bank Advance [Member] | Federal Home Loan Bank Advance One [Member]
Detail of Advances from FHLB [Abstract]
Issue date		2013
Original amount of advances		$ 20,000
Balance		$ 0	20,000
Maturity date		2020
Federal Home Loan Bank Advance [Member] | Federal Home Loan Bank Advance One [Member] | Fixed Rate [Member]
Detail of Advances from FHLB [Abstract]
Interest rate, type		Fixed
Interest rate		1.50%
Federal Home Loan Bank Advance [Member] | Federal Home Loan Bank Advance Two [Member]
Detail of Advances from FHLB [Abstract]
Issue date		2015
Original amount of advances		$ 25,000
Balance		$ 25,000	25,000
Maturity date		2025
Federal Home Loan Bank Advance [Member] | Federal Home Loan Bank Advance Two [Member] | Variable Rate [Member]
Detail of Advances from FHLB [Abstract]
Interest rate, type		Floating
Interest rate		0.19%
Federal Home Loan Bank Advance [Member] | Federal Home Loan Bank Advance Three [Member]
Detail of Advances from FHLB [Abstract]
Issue date		2015
Original amount of advances		$ 25,000
Balance		$ 25,000	25,000
Maturity date		2025
Federal Home Loan Bank Advance [Member] | Federal Home Loan Bank Advance Three [Member] | Variable Rate [Member]
Detail of Advances from FHLB [Abstract]
Interest rate, type		Floating
Interest rate		0.19%
Federal Home Loan Bank Advance [Member] | Federal Home Loan Bank Advance Four [Member]
Detail of Advances from FHLB [Abstract]
Issue date		2015
Original amount of advances		$ 25,000
Balance		$ 25,000	$ 25,000
Maturity date		2025
Federal Home Loan Bank Advance [Member] | Federal Home Loan Bank Advance Four [Member] | Variable Rate [Member]
Detail of Advances from FHLB [Abstract]
Interest rate, type		Floating
Interest rate		0.23%
Short-Term Federal Home Loan Bank Advances [Member]
Notes Payable and Other Borrowings [Abstract]
Amount borrowed from FHLB for liquidity needs				$ 75,000
Debt instrument, term		3 months
Debt instrument, maturity date		Jul. 31, 2020
Payments made on notes payable and other borrowings	$ 75,000

BORROWING ARRANGEMENTS, Junior

BORROWING ARRANGEMENTS, Junior Subordinated Deferrable Interest Debentures and Trust Preferred Securities (Details) - USD ($) $ in Thousands		12 Months Ended
		Dec. 31, 2020	Dec. 31, 2019
Detail of debentures and TPS [Abstract]
Amount of debentures		$ 46,393	$ 46,393
Trust Preferred Securities [Member]
Junior Subordinated Deferrable Interest Debentures and Trust Preferred Securities [Abstract]
Common capital securities issued by the trusts		1,400
Detail of debentures and TPS [Abstract]
Amount of TPS		45,000
Debentures [Member]
Detail of debentures and TPS [Abstract]
Amount of debentures		$ 46,393
Debentures and Trust Preferred Securities [Member] | Maximum [Member]
Junior Subordinated Deferrable Interest Debentures and Trust Preferred Securities [Abstract]
Number of consecutive years during which interest can be deferred		5 years
Detail of debentures and TPS [Abstract]
Period after issue date when debt securities may be redeemed		5 years
South Plains Financial Capital Trust III [Member] | Trust Preferred Securities [Member]
Detail of debentures and TPS [Abstract]
Amount of TPS		$ 10,000
South Plains Financial Capital Trust III [Member] | Debentures [Member]
Detail of debentures and TPS [Abstract]
Amount of debentures		$ 10,310
South Plains Financial Capital Trust III [Member] | Debentures and Trust Preferred Securities [Member]
Detail of debentures and TPS [Abstract]
Issue date		Dec. 31, 2004
Stated maturity date	[1]	Dec. 31, 2034
Interest rate	[2],[3]	2.86%
South Plains Financial Capital Trust III [Member] | Debentures and Trust Preferred Securities [Member] | LIBOR [Member]
Detail of debentures and TPS [Abstract]
Term of variable rate	[2],[3]	3 months
Basis spread on variable rate	[2],[3]	2.65%
South Plains Financial Capital Trust IV [Member] | Trust Preferred Securities [Member]
Detail of debentures and TPS [Abstract]
Amount of TPS		$ 20,000
South Plains Financial Capital Trust IV [Member] | Debentures [Member]
Detail of debentures and TPS [Abstract]
Amount of debentures		$ 20,619
South Plains Financial Capital Trust IV [Member] | Debentures and Trust Preferred Securities [Member]
Detail of debentures and TPS [Abstract]
Issue date		Dec. 31, 2005
Stated maturity date	[1]	Dec. 31, 2035
Interest rate	[2],[3]	1.61%
South Plains Financial Capital Trust IV [Member] | Debentures and Trust Preferred Securities [Member] | LIBOR [Member]
Detail of debentures and TPS [Abstract]
Term of variable rate	[2],[3]	3 months
Basis spread on variable rate	[2],[3]	1.39%
South Plains Financial Capital Trust V [Member] | Trust Preferred Securities [Member]
Detail of debentures and TPS [Abstract]
Amount of TPS		$ 15,000
South Plains Financial Capital Trust V [Member] | Debentures [Member]
Detail of debentures and TPS [Abstract]
Amount of debentures		$ 15,464
South Plains Financial Capital Trust V [Member] | Debentures and Trust Preferred Securities [Member]
Detail of debentures and TPS [Abstract]
Issue date		Dec. 31, 2007
Stated maturity date	[1]	Dec. 31, 2037
Interest rate	[2],[3]	1.72%
South Plains Financial Capital Trust V [Member] | Debentures and Trust Preferred Securities [Member] | LIBOR [Member]
Detail of debentures and TPS [Abstract]
Term of variable rate	[2],[3]	3 months
Basis spread on variable rate	[2],[3]	1.50%
[1]	May be redeemed five years from the issue date, the Company has no current plans to redeem.
[2]	Interest payable quarterly with principal due at maturity.
[3]	Rate as of last reset date.

BORROWING ARRANGEMENTS, Subordi

BORROWING ARRANGEMENTS, Subordinated Debt Securities (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Sep. 29, 2020	Dec. 31, 2019	Dec. 31, 2018
Subordinated Debt Securities [Abstract]
Subordinated debt securities	$ 75,589		$ 26,472
Subordinated Debt [Member]
Subordinated Debt Securities [Abstract]
Debt instrument, face amount	76,500
Debt issuance cost	833
Subordinated debt securities	$ 75,589
Subordinated Debt [Member] | Subordinated Debt Securities Issued in December 2018 [Member]
Subordinated Debt Securities [Abstract]
Debt instrument, face amount				$ 26,500
Subordinated Debt [Member] | Subordinated Debt Securities Issued in December 2018 [Member] | Debt Securities One [Member]
Subordinated Debt Securities [Abstract]
Debt instrument, face amount				$ 12,400
Debt instrument, maturity date	Dec. 31, 2028
Debt instrument, weighted average interest rate				5.74%
Debt instrument, period of fixed interest rate	5 years
Debt instrument, variable interest rate, floor	4.50%
Debt instrument, variable interest rate, ceiling	7.50%
Subordinated Debt [Member] | Subordinated Debt Securities Issued in December 2018 [Member] | Debt Securities One [Member] | Maximum [Member]
Subordinated Debt Securities [Abstract]
Remaining maturity period during which debt can be called	5 years
Subordinated Debt [Member] | Subordinated Debt Securities Issued in December 2018 [Member] | Debt Securities Two [Member]
Subordinated Debt Securities [Abstract]
Debt instrument, face amount				$ 14,100
Debt instrument, maturity date	Dec. 31, 2030
Debt instrument, weighted average interest rate				6.41%
Debt instrument, period of fixed interest rate	7 years
Debt instrument, variable interest rate, floor	4.50%
Debt instrument, variable interest rate, ceiling	7.50%
Subordinated Debt [Member] | Subordinated Debt Securities Issued in December 2018 [Member] | Debt Securities Two [Member] | Maximum [Member]
Subordinated Debt Securities [Abstract]
Remaining maturity period during which debt can be called	5 years
Subordinated Debt [Member] | Subordinated Debt Securities Issued in September 29, 2020 [Member]
Subordinated Debt Securities [Abstract]
Debt instrument, face amount		$ 50,000
Debt issuance cost		$ 926
Debt instrument, maturity date	Sep. 30, 2030
Debt instrument, initial interest rate		4.50%
Debt instrument, period of fixed interest rate	5 years
Subordinated Debt [Member] | Subordinated Debt Securities Issued in September 29, 2020 [Member] | SOFR [Member]
Subordinated Debt Securities [Abstract]
Term of variable rate	3 months
Basis spread on variable rate	4.38%
Subordinated Debt [Member] | Subordinated Debt Securities Issued in September 29, 2020 [Member] | Maximum [Member]
Subordinated Debt Securities [Abstract]
Remaining maturity period during which debt can be called	5 years

EMPLOYEE BENEFITS, Employee Sto

EMPLOYEE BENEFITS, Employee Stock Ownership Plan (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
401K Plan [Member]
EMPLOYEE BENEFITS [Abstract]
Percentage of employer matching contribution for first 5% of participant's contribution	100.00%
Percentage of participant's compensation contributed for employer's 100% matching contribution	5.00%
Expense for contributions to 401 (k) plan	$ 1.7	$ 0
Employee Stock Ownership Plan (ESOP) Plan [Member]
EMPLOYEE BENEFITS [Abstract]
Required service period for an employee to be covered by ESOP plan	1 month
Contributions to ESOP by employer	$ 0	$ 1.8
Shares held by ESOP (in shares)	2,876,419	2,959,826
Shares repurchased from ESOP participants (in shares)		0
Fair value of ESOP shares subject to repurchase obligation			$ 58.2

EMPLOYEE BENEFITS, Employee Hea

EMPLOYEE BENEFITS, Employee Health Benefits (Details) - Employee Health Benefits [Member]	12 Months Ended
	Dec. 31, 2020USD ($)h	Dec. 31, 2019USD ($)
Employee Health Benefits [Abstract]
Waiting period to be eligible for non-officers	60 days
Welfare benefit expense	$ 4,400,000	$ 4,800,000
Accrued benefit obligations	823,000	$ 464,000
Annual limit for stop loss amount per participant	$ 100,000
Minimum [Member]
Employee Health Benefits [Abstract]
Number of working hours required per week to be eligible to cover under self-insured welfare benefit plan | h	30

EMPLOYEE BENEFITS, Non-Qualifie

EMPLOYEE BENEFITS, Non-Qualified Plans (Details) - Nonqualified Plans [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Executive Salary Continuation Plan [Member] | Unfunded Plan [Member]
Non-Qualified Plans [Abstract]
Liabilities for cost of benefits accrued	$ 12,100	$ 11,400
Charges to income for plans	$ 1,100	1,100
Stock Appreciation Rights [Member]
Non-Qualified Plans [Abstract]
Charges to income for plans		$ 610

STOCK-BASED COMPENSATION (Detai

STOCK-BASED COMPENSATION (Details) - 2019 Equity Incentive Plan [Member] - shares	Mar. 06, 2019	Dec. 31, 2020
Equity Incentive Plan [Abstract]
Maximum aggregate number of shares of common stock that may be issued (in shares)		2,841,083
Maximum [Member]
Equity Incentive Plan [Abstract]
Annual increase in number of shares that may be issued	3.00%

STOCK-BASED COMPENSATION, Stock

STOCK-BASED COMPENSATION, Stock Options Activity (Details) - 2019 Equity Incentive Plan [Member] - Stock Option [Member] - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Number of Shares [Roll Forward]
Outstanding at beginning of year (in shares)	1,462,997
Granted (in shares)	248,966
Exercised (in shares)	(122,207)
Forfeited (in shares)	(33,727)
Expired (in shares)	(1,135)
Balance at end of period (in shares)	1,554,894	1,462,997
Exercisable at end of period (in shares)	986,088
Vested at end of period (in shares)	986,088
Weighted-Average Exercise Price [Abstract]
Outstanding at beginning of year (in dollars per share)	$ 13.42
Granted (in dollars per share)	20.93
Exercised (in dollars per share)	10.33
Forfeited (in dollars per share)	17.83
Expired (in dollars per share)	16
Balance at end of period (in dollars per share)	14.77	$ 13.42
Exercisable at end of period (in dollars per share)	12.39
Vested at end of period (in dollars per share)	$ 12.39
Weighted Average Remaining Contractual Life in Years [Abstract]
Outstanding	5 years 11 months 19 days
Exercisable at end of period	5 years 2 months 26 days
Vested at end of period	5 years 2 months 26 days
Aggregate Intrinsic Value [Abstract]
Outstanding at beginning of year	$ 8,212
Granted	0
Exercised	(1,053)	$ (1,400)
Forfeited	(49)
Expired	(3)
Balance at end of period	7,107	$ 8,212
Exercisable at end of period	6,517
Vested at end of period	$ 6,517

STOCK-BASED COMPENSATION, Fair

STOCK-BASED COMPENSATION, Fair Value Assumptions (Details) - USD ($) $ / shares in Units, $ in Thousands	May 06, 2019	Dec. 31, 2020	Dec. 31, 2019
Equity Incentive Plan [Abstract]
Stock option modified from liabilities to equity (in shares)	750,000
Fair value of stock options after modification	$ 11,200
Amount reclassified from liabilities to equity in conversion	11,500
Minimum [Member]
Equity Incentive Plan [Abstract]
Expiration period of options with accelerated vesting due to modification from liabilities to equity		2 years
Maximum [Member]
Equity Incentive Plan [Abstract]
Expiration period of options with accelerated vesting due to modification from liabilities to equity		4 years
Stock Appreciation Rights (SARs) [Member]
Equity Incentive Plan [Abstract]
Fair value of share-based equity awards at conversion date	$ 11,500
Stock Option [Member]
Summary of Assumptions Used to Calculate Fair Value of Awards [Abstract]
Expected volatility		27.46%
Expected dividend yield		0.70%	0.70%
Expected term		6 years 2 months 12 days
Risk-free interest rate		1.44%
Weighted average grant date fair value (in dollars per share)		$ 5.68	$ 7.98
Stock Option [Member] | Minimum [Member]
Summary of Assumptions Used to Calculate Fair Value of Awards [Abstract]
Expected volatility			24.88%
Expected term			6 months
Risk-free interest rate			1.46%
Stock Option [Member] | Maximum [Member]
Summary of Assumptions Used to Calculate Fair Value of Awards [Abstract]
Expected volatility			31.54%
Expected term			7 years
Risk-free interest rate			2.63%
2019 Equity Incentive Plan [Member] | Stock Appreciation Rights (SARs) [Member]
Equity Incentive Plan [Abstract]
Number of outstanding shares converted (in shares)	1,401,000
2019 Equity Incentive Plan [Member] | Stock Option [Member]
Equity Incentive Plan [Abstract]
Intrinsic value of options exercised		$ 1,053	$ 1,400

STOCK-BASED COMPENSATION, Restr

STOCK-BASED COMPENSATION, Restricted Stock Awards and Units (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Weighted-Average Exercise Price [Abstract]
Stock-based compensation expenses	$ 1,272	$ 853
Restricted Stock Units [Member]
Number of Shares [Roll Forward]
Outstanding at beginning of year (in shares)	81,200
Granted (in shares)	5,970
Exercised (in shares)	(24,694)
Forfeited (in shares)	0
Balance at ending of period (in shares)	62,476	81,200
Weighted-Average Exercise Price [Abstract]
Outstanding at beginning of year (in dollars per share)	$ 19.46
Granted (in dollars per share)	20.93
Exercised (in dollars per share)	19.79
Forfeited (in dollars per share)	0
Balance at ending of period (in dollars per share)	$ 19.47	$ 19.46
Award vesting period	4 years
Stock-based compensation expenses	$ 1,300	$ 853
Unrecognized compensation cost	$ 3,000
Weighted average remaining period, recognition of compensation cost	1 year 8 months 12 days
Fair value of restricted stock units vested	$ 489	$ 0

INCOME TAXES, Components of Inc

INCOME TAXES, Components of Income Tax Expense (Benefit) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Current expense [Abstract]
Federal	$ 12,590	$ 6,923
State	248	224
Deferred expense [Abstract]
Federal	(1,588)	334
Total	$ 11,250	$ 7,481

INCOME TAXES, Effective Income

INCOME TAXES, Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
INCOME TAXES [Abstract]
Federal statutory rate	21.00%
Reconciliation of Income Tax Expenses [Abstract]
Federal statutory rate times financial statement income	$ 11,887	$ 7,707
Effect of [Abstract]
Tax-exempt income	(863)	(348)
State taxes, net of federal benefit	196	177
Earnings from bank owned life insurance	(280)	(272)
Non-deductible expenses	248	190
Other, net	62	27
Total	$ 11,250	$ 7,481

INCOME TAXES, Deferred Tax Asse

INCOME TAXES, Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Deferred tax assets [Abstract]
Allowance for loan loss	$ 9,566	$ 5,081
Deferred compensation	5,215	4,669
Other real estate owned	251	251
Nonaccrual loans	59	180
Other	221	162
Total deferred tax assets	15,312	10,343
Deferred tax liabilities [Abstract]
Depreciation	(2,432)	(2,417)
Intangibles	(847)	(924)
Prepaid expenses	(439)	(419)
Mortgage servicing rights	(1,900)	(431)
Unrealized gain on available-for-sale securities	(5,688)	(255)
Other	(1,545)	(278)
Total deferred tax liabilities	(12,851)	(4,724)
Net deferred tax asset	$ 2,461	$ 5,619

RELATED-PARTY TRANSACTIONS (Det

RELATED-PARTY TRANSACTIONS (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
RELATED-PARTY TRANSACTIONS [Abstract]
Direct and indirect loans to related parties, aggregated amount	$ 8.9	$ 10.3
Charge-offs related to related-party loans	$ 0	$ 0

OFF-BALANCE-SHEET ACTIVITIES,_3

OFF-BALANCE-SHEET ACTIVITIES, COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
FHLB Letters of Credit [Abstract]
Letters of credit outstanding balance	$ 199,000	$ 199,000
Lease Commitments [Abstract]
Rent expense for operating leases	2,400	2,000
Rental income	856	891
Future Minimum Lease Payments Due Under Non-Cancelable Operating Leases [Abstract]
2021	1,644
2022	1,517
2023	1,257
2024	929
2025	675
Thereafter	4,613
Total	10,635
Commitments to Grant Loans and Unfunded Commitments Under Lines of Credit [Member]
Financial instruments with off-balance-sheet risk [Abstract]
Financial instruments whose contract amounts represent credit risk outstanding	417,798	409,969
Standby Letters-of-credit [Member]
Financial instruments with off-balance-sheet risk [Abstract]
Financial instruments whose contract amounts represent credit risk outstanding	$ 10,481	$ 10,748

CAPITAL AND REGULATORY MATTER_2

CAPITAL AND REGULATORY MATTERS (Details) $ in Thousands	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)
Consolidated [Member]
Total Capital to Risk Weighted Assets [Abstract]
Actual, Amount	$ 473,425	$ 373,684
Actual, Ratio	0.1908	0.1488
Minimum Required Under BASEL III Fully Phased-In, Amount	$ 260,531	$ 263,769
Minimum Required Under BASEL III Fully Phased-In, Ratio	0.1050	0.1050
Tier I Capital to Risk Weighted Assets [Abstract]
Actual, Amount	$ 366,639	$ 322,835
Actual, Ratio	0.1478	0.1285
Minimum Required Under BASEL III Fully Phased-In, Amount	$ 210,906	$ 213,527
Minimum Required Under BASEL III Fully Phased-In, Ratio	0.0850	0.0850
Common Tier 1 (CET1) [Abstract]
Actual, Amount	$ 321,639	$ 277,835
Actual, Ratio	0.1296	0.1106
Minimum Required Under BASEL III Fully Phased-In, Amount	$ 173,688	$ 175,846
Minimum Required Under BASEL III Fully Phased-In, Ratio	0.0700	0.0700
Tier I Capital to Average Assets [Abstract]
Actual, Amount	$ 366,639	$ 322,835
Actual, Ratio	0.1024	0.1074
Minimum Required Under BASEL III Fully Phased-In, Amount	$ 144,347	$ 120,219
Minimum Required Under BASEL III Fully Phased-In, Ratio	0.0400	0.0400
City Bank [Member]
Total Capital to Risk Weighted Assets [Abstract]
Actual, Amount	$ 404,138	$ 368,322
Actual, Ratio	0.1629	0.1467
Minimum Required Under BASEL III Fully Phased-In, Amount	$ 260,481	$ 263,702
Minimum Required Under BASEL III Fully Phased-In, Ratio	0.1050	0.1050
To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 248,077	$ 251,145
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.1000	0.1000
Tier I Capital to Risk Weighted Assets [Abstract]
Actual, Amount	$ 372,947	$ 343,945
Actual, Ratio	0.1503	0.1370
Minimum Required Under BASEL III Fully Phased-In, Amount	$ 210,866	$ 213,473
Minimum Required Under BASEL III Fully Phased-In, Ratio	0.0850	0.0850
To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 198,462	$ 200,916
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.0800	0.0800
Common Tier 1 (CET1) [Abstract]
Actual, Amount	$ 372,947	$ 343,945
Actual, Ratio	0.1503	0.1370
Minimum Required Under BASEL III Fully Phased-In, Amount	$ 173,654	$ 175,801
Minimum Required Under BASEL III Fully Phased-In, Ratio	0.0700	0.0700
To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 161,250	$ 163,244
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.0650	0.0650
Tier I Capital to Average Assets [Abstract]
Actual, Amount	$ 372,947	$ 343,945
Actual, Ratio	0.1042	0.1145
Minimum Required Under BASEL III Fully Phased-In, Amount	$ 144,282	$ 121,235
Minimum Required Under BASEL III Fully Phased-In, Ratio	0.0400	0.0400
To Be Well Capitalized Under Prompt Corrective Action Provisions, Amount	$ 178,999	$ 150,175
To Be Well Capitalized Under Prompt Corrective Action Provisions, Ratio	0.0500	0.0500

DERIVATIVES (Details)

DERIVATIVES (Details) - Fair Value Hedging [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Interest Income [Member]
Changes in fair value hedges included in Consolidated Statements of Comprehensive Income [Abstract]
Change in fair value on fixed rate loans - hedged item	$ 580	$ 511
Interest Rate Swaps [Member] | Other Liabilities [Member]
Fair value hedges included in Consolidated Balance Sheets [Abstract]
Derivative liability, notional amount	10,178	10,557
Derivative liability, fair value	927	351
Interest Rate Swaps [Member] | Interest Income [Member]
Changes in fair value hedges included in Consolidated Statements of Comprehensive Income [Abstract]
Change in fair value on interest rate swaps hedging fixed rate loans	(576)	(520)
Cash Flow Swaps [Member] | Other Liabilities [Member]
Fair value hedges included in Consolidated Balance Sheets [Abstract]
Derivative liability, notional amount	68,485	0
Derivative liability, fair value	1,643	0
Cash Flow Swaps [Member] | Other Assets [Member]
Fair value hedges included in Consolidated Balance Sheets [Abstract]
Derivative asset, notional amount	55,275	0
Derivative asset, fair value	$ 1,618	$ 0

DERIVATIVES, Mortgage Banking D

DERIVATIVES, Mortgage Banking Derivatives (Details) - Mortgage Banking [Member] - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Other Assets [Member]
Notional amount and fair value of mortgage banking derivatives in Consolidated Balance Sheets [Abstract]
Derivative asset, notional amount	$ 210,716	$ 52,875
Derivative asset, fair value	5,115	814
Other Liabilities [Member]
Notional amount and fair value of mortgage banking derivatives in Consolidated Balance Sheets [Abstract]
Derivative liability, notional amount	203,669	58,948
Derivative liability, fair value	1,787	141
Forward Contracts [Member] | Other Assets [Member]
Notional amount and fair value of mortgage banking derivatives in Consolidated Balance Sheets [Abstract]
Derivative asset, notional amount	0	0
Derivative asset, fair value	0	0
Forward Contracts [Member] | Other Liabilities [Member]
Notional amount and fair value of mortgage banking derivatives in Consolidated Balance Sheets [Abstract]
Derivative liability, notional amount	203,669	58,948
Derivative liability, fair value	1,787	141
Forward Contracts [Member] | Net Gain (Loss) on Sales of Loans [Member]
Derivative instruments impact on results of operations [Abstract]
Gain (loss) on sale of derivative instruments	(754)	672
Interest Rate Lock Commitments [Member] | Other Assets [Member]
Notional amount and fair value of mortgage banking derivatives in Consolidated Balance Sheets [Abstract]
Derivative asset, notional amount	210,716	52,875
Derivative asset, fair value	5,115	814
Interest Rate Lock Commitments [Member] | Other Liabilities [Member]
Notional amount and fair value of mortgage banking derivatives in Consolidated Balance Sheets [Abstract]
Derivative liability, notional amount	0	0
Derivative liability, fair value	0	0
Interest Rate Lock Commitments [Member] | Net Gain (Loss) on Sales of Loans [Member]
Derivative instruments impact on results of operations [Abstract]
Gain (loss) on sale of derivative instruments	$ 3,409	$ (249)

PARENT COMPANY ONLY CONDENSED_3

PARENT COMPANY ONLY CONDENSED FINANCIAL INFORMATION, Condensed Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
ASSETS [Abstract]
Cash and cash equivalents	$ 300,307	$ 158,099
Other assets	23,384	22,701
Total assets	3,599,160	3,237,167
LIABILITIES AND STOCKHOLDERS' EQUITY [Abstract]
Accrued expenses and other liabilities	31,229	29,098
Stockholders' equity	370,048	306,182	$ 154,580
Total liabilities and stockholders' equity	3,599,160	3,237,167
South Plains Financial, Inc. [Member]
ASSETS [Abstract]
Cash and cash equivalents	67,890	4,181
Other assets	4,248	3,906
Total assets	493,544	380,430
LIABILITIES AND STOCKHOLDERS' EQUITY [Abstract]
Debt	121,982	72,865
Accrued expenses and other liabilities	1,514	1,383
Stockholders' equity	370,048	306,182
Total liabilities and stockholders' equity	493,544	380,430
South Plains Financial, Inc. [Member] | Bank Subsidiary [Member]
ASSETS [Abstract]
Investment in subsidiary	421,355	372,292
South Plains Financial, Inc. [Member] | Other Subsidiary [Member]
ASSETS [Abstract]
Investment in subsidiary	$ 51	$ 51

PARENT COMPANY ONLY CONDENSED_4

PARENT COMPANY ONLY CONDENSED FINANCIAL INFORMATION, Condensed Statements of Income (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Income Statement [Abstract]
Interest expense	$ (15,946)	$ (28,367)
Other expense	(17,818)	(14,592)
Income before income taxes	56,603	36,701
Income tax (benefit)	11,250	7,481
Net income	45,353	29,220
South Plains Financial, Inc. [Member]
Income Statement [Abstract]
Dividends	20,500	10,000
Other income	115	64
ESOP Contribution	0	(1,800)
Interest expense	(3,390)	(3,562)
Other expense	(1,572)	(2,221)
Income before income taxes	15,653	2,481
Income tax (benefit)	(1,018)	(1,498)
Equity in undistributed subsidiary income	28,682	25,241
Net income	$ 45,353	$ 29,220

PARENT COMPANY ONLY CONDENSED_5

PARENT COMPANY ONLY CONDENSED FINANCIAL INFORMATION, Condensed Statements of Cash Flows (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities [Abstract]
Net income	$ 45,353	$ 29,220
Adjustments [Abstract]
Stock based compensation	1,272	853
Net cash from operating activities	5,627	30,484
Cash flows from investing activities [Abstract]
Cash paid in business combination	(687)	0
Net cash from investing activities	(156,228)	(213,493)
Cash flows from financing activities [Abstract]
Issuance of common stock	0	51,392
Payments to tax authorities for stock-based compensation	(319)	(351)
Payments to repurchase common stock	(293)	0
Cash dividends on common stock	(2,528)	(1,079)
Net cash from financing activities	292,809	95,119
Net change in cash and cash equivalents	142,208	(87,890)
Beginning cash and cash equivalents	158,099	245,989
Ending cash and cash equivalents	300,307	158,099
South Plains Financial, Inc. [Member]
Cash flows from operating activities [Abstract]
Net income	45,353	29,220
Adjustments [Abstract]
Equity in undistributed subsidiary income	(28,682)	(25,241)
Amortization of debt issuance costs	47	0
Stock based compensation	1,272	853
Change in other assets	(342)	(1,601)
Change in other liabilities	131	541
Release of unearned ESOP shares	0	0
Net cash from operating activities	17,779	3,772
Cash flows from investing activities [Abstract]
Cash paid in business combination	0	(76,100)
Net cash from investing activities	0	(76,100)
Cash flows from financing activities [Abstract]
Proceeds from long-term borrowings	49,070	0
Repayments of long-term borrowings	0	(7,530)
Issuance of common stock	0	51,392
Payments to tax authorities for stock-based compensation	(319)	(351)
Payments to repurchase common stock	(293)	0
Share based liability conversion	0	11,450
Cash dividends on common stock	(2,528)	(1,079)
Net cash from financing activities	45,930	53,882
Net change in cash and cash equivalents	63,709	(18,446)
Beginning cash and cash equivalents	4,181	22,627
Ending cash and cash equivalents	$ 67,890	$ 4,181

EARNINGS PER SHARE (Details)

EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
EARNINGS PER SHARE [Abstract]
Net income	$ 45,353	$ 29,220
Weighted average common shares outstanding - basic (in shares)	18,054,373	16,818,697
Weighted average common shares outstanding - diluted (in shares)	18,339,033	17,040,550
Basic earnings per share (in dollars per share)	$ 2.51	$ 1.74
Diluted earnings per share (in dollars per share)	$ 2.47	$ 1.71

SEGMENT INFORMATION (Details)

SEGMENT INFORMATION (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Financial results by reportable segments [Abstract]
Net interest income (expense)	$ 122,285	$ 104,575
Provision for loan loss	(25,570)	(2,799)
Noninterest income	101,603	56,633
Noninterest expense	(141,715)	(121,708)
Income before income taxes	56,603	36,701
Income tax (expense) benefit	(11,250)	(7,481)
Net income	45,353	29,220
Total assets	3,599,160	3,237,167
Banking [Member] | Operating Segments [Member]
Financial results by reportable segments [Abstract]
Net interest income (expense)	122,285	104,575
Provision for loan loss	(25,570)	(2,799)
Noninterest income	94,010	49,834
Noninterest expense	(135,985)	(117,160)
Income before income taxes	54,740	34,450
Income tax (expense) benefit	(10,804)	(7,097)
Net income	43,936	27,353
Total assets	3,584,828	3,224,396
Insurance [Member] | Operating Segments [Member]
Financial results by reportable segments [Abstract]
Net interest income (expense)	0	0
Provision for loan loss	0	0
Noninterest income	7,593	6,799
Noninterest expense	(5,730)	(4,548)
Income before income taxes	1,863	2,251
Income tax (expense) benefit	(446)	(384)
Net income	1,417	1,867
Total assets	$ 14,332	$ 12,771

ACCUMULATED OTHER COMPREHENSI_3

ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	$ 306,182	$ 154,580
Other comprehensive income (loss) before reclassification	22,212	3,179
Amounts reclassified from other comprehensive	(1,831)	22
Other comprehensive income	20,381	3,201
Balance	370,048	306,182
Accumulated Other Comprehensive Income (Loss) [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	958	(2,243)
Other comprehensive income	20,381	3,201
Balance	21,339	958
Gains and (Losses) on Cash Flow Hedges [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	0	0
Other comprehensive income (loss) before reclassification	(60)	0
Amounts reclassified from other comprehensive	0	0
Other comprehensive income	(60)	0
Balance	(60)	0
Unrealized Gains and (Losses) on Securities Available for Sale [Member]
AOCI Attributable to Parent, Net of Tax [Roll Forward]
Balance	958	(2,243)
Other comprehensive income (loss) before reclassification	22,272	3,179
Amounts reclassified from other comprehensive	(1,831)	22
Other comprehensive income	20,441	3,201
Balance	$ 21,399	$ 958

FAIR VALUE DISCLOSURES, Assets

FAIR VALUE DISCLOSURES, Assets (Liabilities) Measured at Fair Value on Recurring and Non-Recurring Basis (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Securities available for sale [Abstract]
Securities available for sale	$ 803,087	$ 707,650
Mortgage servicing rights	9,049	2,054	$ 1,270
U.S. Government and Agencies [Member]
Securities available for sale [Abstract]
Securities available for sale	4,753	4,807
State and Municipal [Member]
Securities available for sale [Abstract]
Securities available for sale	272,607	94,692
Mortgage-Backed Securities [Member]
Securities available for sale [Abstract]
Securities available for sale	373,362	464,516
Collateralized Mortgage Obligations [Member]
Securities available for sale [Abstract]
Securities available for sale	106,715	107,289
Other Securities [Member]
Securities available for sale [Abstract]
Securities available for sale	12,078
Recurring [Member]
Securities available for sale [Abstract]
Asset-backed and other amortizing securities	33,572	36,346
Loans held for sale (mandatory)	80,174	32,809
Mortgage servicing rights	9,049	2,054
Asset derivatives	6,734	814
Liability derivatives	(4,357)	(492)
Recurring [Member] | U.S. Government and Agencies [Member]
Securities available for sale [Abstract]
Securities available for sale	4,753	4,807
Recurring [Member] | State and Municipal [Member]
Securities available for sale [Abstract]
Securities available for sale	272,607	94,692
Recurring [Member] | Mortgage-Backed Securities [Member]
Securities available for sale [Abstract]
Securities available for sale	373,362	464,516
Recurring [Member] | Collateralized Mortgage Obligations [Member]
Securities available for sale [Abstract]
Securities available for sale	106,715	107,289
Recurring [Member] | Other Securities [Member]
Securities available for sale [Abstract]
Securities available for sale	12,078
Recurring [Member] | Level 1 [Member]
Securities available for sale [Abstract]
Asset-backed and other amortizing securities	0	0
Loans held for sale (mandatory)	0	0
Mortgage servicing rights	0	0
Asset derivatives	0	0
Liability derivatives	0	0
Recurring [Member] | Level 1 [Member] | U.S. Government and Agencies [Member]
Securities available for sale [Abstract]
Securities available for sale	0	0
Recurring [Member] | Level 1 [Member] | State and Municipal [Member]
Securities available for sale [Abstract]
Securities available for sale	0	0
Recurring [Member] | Level 1 [Member] | Mortgage-Backed Securities [Member]
Securities available for sale [Abstract]
Securities available for sale	0	0
Recurring [Member] | Level 1 [Member] | Collateralized Mortgage Obligations [Member]
Securities available for sale [Abstract]
Securities available for sale	0	0
Recurring [Member] | Level 1 [Member] | Other Securities [Member]
Securities available for sale [Abstract]
Securities available for sale	0
Recurring [Member] | Level 2 [Member]
Securities available for sale [Abstract]
Asset-backed and other amortizing securities	33,572	36,346
Loans held for sale (mandatory)	80,174	32,809
Mortgage servicing rights	0	0
Asset derivatives	6,734	814
Liability derivatives	(4,357)	(492)
Recurring [Member] | Level 2 [Member] | U.S. Government and Agencies [Member]
Securities available for sale [Abstract]
Securities available for sale	4,753	4,807
Recurring [Member] | Level 2 [Member] | State and Municipal [Member]
Securities available for sale [Abstract]
Securities available for sale	272,607	94,692
Recurring [Member] | Level 2 [Member] | Mortgage-Backed Securities [Member]
Securities available for sale [Abstract]
Securities available for sale	373,362	464,516
Recurring [Member] | Level 2 [Member] | Collateralized Mortgage Obligations [Member]
Securities available for sale [Abstract]
Securities available for sale	106,715	107,289
Recurring [Member] | Level 2 [Member] | Other Securities [Member]
Securities available for sale [Abstract]
Securities available for sale	12,078
Recurring [Member] | Level 3 [Member]
Securities available for sale [Abstract]
Asset-backed and other amortizing securities	0	0
Loans held for sale (mandatory)	0	0
Mortgage servicing rights	9,049	2,054
Asset derivatives	0	0
Liability derivatives	0	0
Recurring [Member] | Level 3 [Member] | U.S. Government and Agencies [Member]
Securities available for sale [Abstract]
Securities available for sale	0	0
Recurring [Member] | Level 3 [Member] | State and Municipal [Member]
Securities available for sale [Abstract]
Securities available for sale	0	0
Recurring [Member] | Level 3 [Member] | Mortgage-Backed Securities [Member]
Securities available for sale [Abstract]
Securities available for sale	0	0
Recurring [Member] | Level 3 [Member] | Collateralized Mortgage Obligations [Member]
Securities available for sale [Abstract]
Securities available for sale	0	0
Recurring [Member] | Level 3 [Member] | Other Securities [Member]
Securities available for sale [Abstract]
Securities available for sale	0
Nonrecurring [Member]
Assets Measured at Fair Value on a Non-Recurring Basis [Abstract]
Impaired loans	11,926	3,642
Other real estate owned	1,353	1,883
Nonrecurring [Member] | Level 1 [Member]
Assets Measured at Fair Value on a Non-Recurring Basis [Abstract]
Impaired loans	0	0
Other real estate owned	0	0
Nonrecurring [Member] | Level 2 [Member]
Assets Measured at Fair Value on a Non-Recurring Basis [Abstract]
Impaired loans	0	0
Other real estate owned	0	0
Nonrecurring [Member] | Level 3 [Member]
Assets Measured at Fair Value on a Non-Recurring Basis [Abstract]
Impaired loans	11,926	3,642
Other real estate owned	$ 1,353	$ 1,883

FAIR VALUE DISCLOSURES, Quantit

FAIR VALUE DISCLOSURES, Quantitative Information about Non-Recurring Level 3 Fair Value Measurements (Details) $ in Thousands	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Mortgage servicing rights	$ 9,049	$ 2,054	$ 1,270
Third Party Appraisals or Inspections [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Impaired loans	11,926	3,642
Other real estate owned	$ 1,353	$ 1,883
Third Party Appraisals or Inspections [Member] | Collateral Discounts and Selling Costs [Member] | Minimum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Impaired loans, discounts	0	0
Other real estate owned, discounts	0.15	0.15
Third Party Appraisals or Inspections [Member] | Collateral Discounts and Selling Costs [Member] | Maximum [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Impaired loans, discounts	1	1
Other real estate owned, discounts	0.66	0.66
Discounted Cash Flows [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Mortgage servicing rights	$ 9,049	$ 2,054
Discounted Cash Flows [Member] | Conditional Prepayment Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Mortgage servicing rights, discounts	0.0448	0.0523
Discounted Cash Flows [Member] | Discount Rate [Member]
Fair Value Measurement Inputs and Valuation Techniques [Abstract]
Mortgage servicing rights, discounts	0.0972	0.1078

FAIR VALUE DISCLOSURES, Estimat

FAIR VALUE DISCLOSURES, Estimated Fair Values, and Related Carrying Amounts (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Carrying Amount [Member]
Financial assets [Abstract]
Cash and cash equivalents	$ 300,307	$ 158,099
Loans, net	2,176,030	2,119,426
Accrued interest receivable	15,233	13,924
Bank-owned life insurance	70,731	69,397
Financial liabilities [Abstract]
Deposits	2,974,351	2,696,857
Accrued interest payable	2,113	2,283
Notes payable & other borrowings	75,000	95,000
Junior subordinated deferrable interest debentures	46,393	46,393
Subordinated debt securities	75,589	26,472
Fair Value [Member]
Financial assets [Abstract]
Cash and cash equivalents	300,307	158,099
Loans, net	2,179,573	2,123,289
Accrued interest receivable	15,233	13,924
Bank-owned life insurance	70,731	69,397
Financial liabilities [Abstract]
Deposits	2,979,439	2,701,193
Accrued interest payable	2,113	2,283
Notes payable & other borrowings	75,000	95,000
Junior subordinated deferrable interest debentures	45,690	46,393
Subordinated debt securities	76,889	26,472
Level 1 [Member] | Fair Value [Member]
Financial assets [Abstract]
Cash and cash equivalents	300,307	158,099
Loans, net	0	0
Accrued interest receivable	0	0
Bank-owned life insurance	0	0
Financial liabilities [Abstract]
Deposits	2,649,830	2,354,999
Accrued interest payable	0	0
Notes payable & other borrowings	0	0
Junior subordinated deferrable interest debentures	0	0
Subordinated debt securities	0	0
Level 2 [Member] | Fair Value [Member]
Financial assets [Abstract]
Cash and cash equivalents	0	0
Loans, net	0	0
Accrued interest receivable	15,233	13,924
Bank-owned life insurance	70,731	69,397
Financial liabilities [Abstract]
Deposits	329,609	346,194
Accrued interest payable	2,113	2,283
Notes payable & other borrowings	75,000	95,000
Junior subordinated deferrable interest debentures	45,690	46,393
Subordinated debt securities	76,889	26,472
Level 3 [Member] | Fair Value [Member]
Financial assets [Abstract]
Cash and cash equivalents	0	0
Loans, net	2,179,573	2,123,289
Accrued interest receivable	0	0
Bank-owned life insurance	0	0
Financial liabilities [Abstract]
Deposits	0	0
Accrued interest payable	0	0
Notes payable & other borrowings	0	0
Junior subordinated deferrable interest debentures	0	0
Subordinated debt securities	$ 0	$ 0

BUSINESS COMBINATIONS, Windmark

BUSINESS COMBINATIONS, Windmark (Details) - USD ($) $ in Thousands	1 Months Ended		12 Months Ended
	Jun. 30, 2020	Sep. 30, 2019	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Assets Acquired and Liabilities Assumed [Abstract]
Cash paid			$ 687	$ 0
Assets acquired [Abstract]
Goodwill recorded in acquisition			$ 19,508	$ 18,757	$ 0
Windmark Insurance Agency, Inc. [Member] | Crop Insurance Agency in Texas [Member]
Assets Acquired and Liabilities Assumed [Abstract]
Cash paid		$ 2,800
Assets acquired [Abstract]
Premises and equipment, net		8
Other assets		290
Total assets acquired		2,607
Goodwill recorded in acquisition		193
Windmark Insurance Agency, Inc. [Member] | Crop Insurance Agency in Texas [Member] | Customer List [Member]
Assets acquired [Abstract]
Intangible assets		1,800
Windmark Insurance Agency, Inc. [Member] | Crop Insurance Agency in Texas [Member] | Other Intangible Assets [Member]
Assets acquired [Abstract]
Intangible assets		$ 509
Windmark Insurance Agency, Inc. [Member] | Crop Insurance Agency in Nebraska [Member]
Assets Acquired and Liabilities Assumed [Abstract]
Cash paid	$ 687
Assets acquired [Abstract]
Premises and equipment, net	24
Total assets acquired	687
Goodwill recorded in acquisition	0
Windmark Insurance Agency, Inc. [Member] | Crop Insurance Agency in Nebraska [Member] | Customer List [Member]
Assets acquired [Abstract]
Intangible assets	512
Windmark Insurance Agency, Inc. [Member] | Crop Insurance Agency in Nebraska [Member] | Other Intangible Assets [Member]
Assets acquired [Abstract]
Intangible assets	$ 151

BUSINESS COMBINATIONS, West Tex

BUSINESS COMBINATIONS, West Texas State Bank (Details) $ in Thousands	Nov. 12, 2019USD ($)Branch	Dec. 31, 2020USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Business Combinations [Abstract]
Increase in goodwill		$ 751	$ 0
Assets Acquired and Liabilities Assumed [Abstract]
Cash paid		687	0
Liabilities assumed [Abstract]
Goodwill recorded in acquisition		19,508	18,757	$ 0
West Texas State Bank [Member]
Business Combinations [Abstract]
Number of additional branches | Branch	6
Ownership interest	100.00%
Goodwill recognized expected to be deductible for income tax purposes	$ 0
Acquisition expenses			$ 955
Non-credit impaired loans fair value	196,200
Contractual balance of non-credit impaired loans	198,400
Discount on acquired loans being recognized into interest income	2,200
Increase in goodwill		751
Decrease in loans		(900)
Decrease in other liabilities		$ (460)
Assets Acquired and Liabilities Assumed [Abstract]
Cash paid	76,100
Assets acquired [Abstract]
Cash and cash equivalents	77,903
Interest-bearing time deposits in banks	52,700
Federal funds purchased	26,468
Securities available for sale	68,398
Loans held for investment	195,228
Bank-owned life insurance	10,932
Premises and equipment, net	4,132
Accrued interest receivable	1,114
Other assets	2,648
Total assets acquired	446,202
Liabilities assumed [Abstract]
Deposits	386,176
Accrued interest payable	55
Deferred tax liability	762
Other liabilities	2,424
Total liabilities assumed	389,417
Net assets acquired	56,785
Goodwill recorded in acquisition	19,315
West Texas State Bank [Member] | Core Deposit Intangible [Member]
Assets acquired [Abstract]
Intangible assets	$ 6,679