Hills Bancorporation (HBIA) 10-K 4 Mar 22 2021 FY Annual report Financial data

Document and Entity Information

Document and Entity Information - USD ($)	12 Months Ended
	Dec. 31, 2021	Feb. 28, 2022	Jun. 30, 2021
Cover [Abstract]
Document Type	10-K
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	0-12668
Entity Registrant Name	Hills Bancorporation
Entity Incorporation, State or Country Code	IA
Entity Tax Identification Number	42-1208067
Entity Address, Address Line One	131 E. Main Street, PO Box 160
Entity Address, City or Town	Hills
Entity Address, State or Province	IA
Entity Address, Postal Zip Code	52235
City Area Code	319
Local Phone Number	679-2291
Title of 12(g) Security	No par value common stock
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 Smaller Reporting Company	false
Entity Emerging Growth Company	false
ICFR Auditor Attestation Flag	true
Entity Shell Company	false
Entity Public Float			$ 531,250,033
Entity Common Stock, Shares Outstanding (in shares)		9,283,096
Documents Incorporated by Reference	Portions of the Proxy Statement dated March 18, 2022 for the Annual Meeting of the Shareholders of the Registrant to be held April 18, 2022 (the Proxy Statement) are incorporated by reference in Part III of this Form 10-K.
Entity Central Index Key	0000732417
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Amendment Flag	false

Audit Information

Audit Information	12 Months Ended
	Dec. 31, 2021
Audit Information [Abstract]
Auditor Name	BKD, LLP
Auditor Location	Springfield, Missouri
Auditor Firm ID	686

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
ASSETS
Cash and cash equivalents	$ 781,918	$ 574,310
Investment securities available for sale at fair value (amortized cost 2021 $549,386; 2020 $396,670) (Notes 1, 2 and 13)	551,354	408,372
Stock of Federal Home Loan Bank	4,546	8,172
Loans held for sale	5,716	43,947
Loans, net of allowance for credit losses (2021 $35,470; 2020 $37,070) (Notes 1, 3, and 12)	2,625,062	2,674,012
Property and equipment, net (Note 4)	34,290	35,878
Tax credit real estate	9,815	7,273
Accrued interest receivable	11,437	12,177
Deferred income taxes, net (Notes 1 and 10)	9,125	6,088
Goodwill	2,500	2,500
Other assets	8,799	9,633
Total Assets	4,044,562	3,782,362
Liabilities
Noninterest-bearing deposits	633,101	532,190
Interest-bearing deposits (Note 6)	2,900,893	2,660,378
Total deposits	3,533,994	3,192,568
Other borrowings, federal funds purchased	249	0
Federal Home Loan Bank borrowings (Note 7)	0	105,000
Accrued interest payable	1,165	1,733
Allowance for credit losses on off-balance sheet credit exposures	3,850	0
Other liabilities	16,841	19,656
Total Liabilities	3,556,099	3,318,957
Commitments and Contingencies (Notes 9 and 15)
Redeemable Common Stock Held By Employee Stock Ownership Plan (ESOP) (Note 9)	50,013	47,329
Stockholders' Equity (Note 11)
Common stock, no par value; authorized 20,000,000 shares; issued 2021 10,329,493 shares; 2020 10,330,242 shares	0	0
Paid in capital	60,938	60,233
Retained earnings	474,392	439,831
Accumulated other comprehensive gain (Note 8)	1,477	8,782
Treasury stock at cost (2021 1,029,853 shares; 2020 999,247 shares)	(48,344)	(45,441)
Total Stockholders' Equity	488,463	463,405
Less maximum cash obligation related to ESOP shares (Note 9)	50,013	47,329
Total Stockholders' Equity Less Maximum Cash Obligations Related To ESOP Shares	438,450	416,076
Total Liabilities & Stockholders' Equity	$ 4,044,562	$ 3,782,362

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
ASSETS
Investment securities available for sale, amortized cost	$ 549,386	$ 396,670
Loans, allowance for loan losses	$ 35,470	$ 37,070
STOCKHOLDERS' EQUITY
Common stock, no par value (in dollars per share)	$ 0	$ 0
Common stock, authorized (in shares)	20,000,000	20,000,000
Common stock, issued (in shares)	10,329,493	10,330,242
Treasury stock at cost (in shares)	1,029,853	999,247

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Interest income:
Loans, including fees	$ 113,648	$ 120,196	$ 121,269
Investment securities:
Taxable	3,604	3,512	3,239
Nontaxable	3,854	3,876	3,844
Federal funds sold	983	945	3,980
Total interest income	122,089	128,529	132,332
Interest expense:
Deposits	14,712	21,553	28,540
FHLB borrowings	2,915	5,399	6,333
Total interest expense	17,627	26,952	34,873
Net interest income	104,462	101,577	97,459
Credit loss (benefit) expense (Note 3)	(5,507)	4,358	(2,880)
Net interest income after credit loss (benefit) expense	109,969	97,219	100,339
Noninterest income:
Net gain on sale of loans	7,588	6,678	3,539
Other noninterest income	581	1,187	1,426
Gain (loss) on sale of investment securities	0	10	(28)
Total other income	33,464	28,336	24,792
Noninterest expenses:
Salaries and employee benefits	42,458	40,621	36,709
Occupancy	4,152	4,343	4,336
Furniture and equipment	7,276	7,357	6,795
Office supplies and postage	1,739	1,799	1,841
Advertising and business development	2,132	2,082	2,595
Outside services	12,592	11,069	10,360
FDIC insurance assessment	1,043	856	194
Other noninterest expenses	9,949	7,504	4,434
Total other expenses	81,341	75,631	67,264
Income before income taxes	62,092	49,924	57,867
Income taxes (Note 10)	14,007	11,277	12,549
Net income	$ 48,085	$ 38,647	$ 45,318
Earnings per share:
Basic (in dollars per share)	$ 5.16	$ 4.12	$ 4.85
Diluted (in dollars per share)	$ 5.16	$ 4.12	$ 4.85
Trust fees
Noninterest income:
Fee income	$ 13,521	$ 10,275	$ 9,579
Service charges and fees
Noninterest income:
Fee income	$ 11,774	$ 10,186	$ 10,276

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Statement of Comprehensive Income [Abstract]
Net income	$ 48,085	$ 38,647	$ 45,318
Securities:
Net change in unrealized (loss) gain on securities available for sale	(9,734)	7,478	6,940
Reclassification adjustment for net (gains) losses realized in net income	0	(10)	28
Income taxes	2,429	(1,864)	(1,738)
Other comprehensive (loss) income on securities available for sale	(7,305)	5,604	5,230
Derivatives used in cash flow hedging relationships:
Net change in unrealized loss on derivatives	0	(335)	(753)
Reclassification adjustment for losses realized in net income	0	2,684	0
Income taxes	0	(586)	188
Other comprehensive income (loss) on cash flow hedges	0	1,763	(565)
Other comprehensive (loss) income, net of tax	(7,305)	7,367	4,665
Comprehensive income	$ 40,780	$ 46,014	$ 49,983

CONSOLIDATED STATEMENTS OF STOC

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY - USD ($) $ in Thousands	Total	Cumulative Effect, Period Of Adoption, Adjustment	Cumulative Effect, Period of Adoption, Adjusted Balance	Paid In Capital [Member]	Paid In Capital [Member]Cumulative Effect, Period of Adoption, Adjusted Balance	Retained Earnings [Member]	Retained Earnings [Member]Cumulative Effect, Period Of Adoption, Adjustment	Retained Earnings [Member]Cumulative Effect, Period of Adoption, Adjusted Balance	Accumulated Other Comprehensive Income (Loss) [Member]	Accumulated Other Comprehensive Income (Loss) [Member]Cumulative Effect, Period of Adoption, Adjusted Balance	Treasury Stock [Member]	Treasury Stock [Member]Cumulative Effect, Period of Adoption, Adjusted Balance	Maximum Cash Obligation Related To ESOP Shares [Member]	Maximum Cash Obligation Related To ESOP Shares [Member]Cumulative Effect, Period of Adoption, Adjusted Balance
Beginning Balance at Dec. 31, 2018	$ 334,882			$ 52,122		$ 371,848			$ (3,250)		$ (36,968)		$ (48,870)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of 101,912, 110,337 and 24,513 shares of common stock for the years ending 2019, 2020, and 2021, respectively	6,221			3,549		0			0		2,672		0
Issuance of 7,720, 7,449 and 7,334 shares of common stock under the employee stock purchase plan for the years ending 2019, 2020, and 2021, respectively	434			434		0			0		0		0
Unearned restricted stock compensation	86			86		0			0		0		0
Forfeiture of 5,255, 4,863 and 8,083 shares of common stock for the years ending 2019, 2020, and 2021, respectively	(262)			(262)		0			0		0		0
Share-based compensation	14			14		0			0		0		0
Change related to ESOP shares	(2,956)			0		0			0		0		(2,956)
Net income	45,318			0		45,318			0		0		0
Cash dividends ($0.82, $0.89, and $0.94 per share) for the years ending 2019, 2020, and 2021, respectively	(7,657)			0		(7,657)			0		0		0
Purchase of 89,124, 133,622, and 55,119 shares of common stock for the years ending 2019, 2020, and 2021, respectively	(5,534)			0		0			0		(5,534)		0
Other comprehensive income (loss)	4,665			0		0			4,665		0		0
Ending Balance at Dec. 31, 2019	375,211			55,943		409,509			1,415		(39,830)		(51,826)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of 101,912, 110,337 and 24,513 shares of common stock for the years ending 2019, 2020, and 2021, respectively	7,116			4,177		0			0		2,939		0
Issuance of 7,720, 7,449 and 7,334 shares of common stock under the employee stock purchase plan for the years ending 2019, 2020, and 2021, respectively	413			413		0			0		0		0
Unearned restricted stock compensation	(68)			(68)		0			0		0		0
Forfeiture of 5,255, 4,863 and 8,083 shares of common stock for the years ending 2019, 2020, and 2021, respectively	(257)			(257)		0			0		0		0
Share-based compensation	25			25		0			0		0		0
Change related to ESOP shares	4,497			0		0			0		0		4,497
Net income	38,647			0		38,647			0		0		0
Cash dividends ($0.82, $0.89, and $0.94 per share) for the years ending 2019, 2020, and 2021, respectively	(8,325)			0		(8,325)			0		0		0
Purchase of 89,124, 133,622, and 55,119 shares of common stock for the years ending 2019, 2020, and 2021, respectively	(8,550)			0		0			0		(8,550)		0
Other comprehensive income (loss)	7,367			0		0			7,367		0		0
Ending Balance at Dec. 31, 2020	416,076	$ (4,751)	$ 411,325	60,233	$ 60,233	439,831	$ (4,751)	$ 435,080	8,782	$ 8,782	(45,441)	$ (45,441)	(47,329)	$ (47,329)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of 101,912, 110,337 and 24,513 shares of common stock for the years ending 2019, 2020, and 2021, respectively	1,618			952		0			0		666		0
Issuance of 7,720, 7,449 and 7,334 shares of common stock under the employee stock purchase plan for the years ending 2019, 2020, and 2021, respectively	427			427		0			0		0		0
Unearned restricted stock compensation	(244)			(244)		0			0		0		0
Forfeiture of 5,255, 4,863 and 8,083 shares of common stock for the years ending 2019, 2020, and 2021, respectively	(455)			(455)		0			0		0		0
Share-based compensation	25			25		0			0		0		0
Change related to ESOP shares	(2,684)			0		0			0		0		(2,684)
Net income	48,085			0		48,085			0		0		0
Cash dividends ($0.82, $0.89, and $0.94 per share) for the years ending 2019, 2020, and 2021, respectively	(8,773)			0		(8,773)			0		0		0
Purchase of 89,124, 133,622, and 55,119 shares of common stock for the years ending 2019, 2020, and 2021, respectively	(3,569)			0		0			0		(3,569)		0
Other comprehensive income (loss)	(7,305)			0		0			(7,305)		0		0
Ending Balance at Dec. 31, 2021	$ 438,450			$ 60,938		$ 474,392			$ 1,477		$ (48,344)		$ (50,013)

CONSOLIDATED STATEMENTS OF ST_2

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Parenthetical) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of common stock (in shares)	24,513	110,337	101,912
Issuance of common stock purchased under the employee stock purchase plan (in shares)	7,334	7,449	7,720
Forfeiture of common stock (in shares)	8,083	4,863	5,255
Cash dividends (in dollars per share)	$ 0.94	$ 0.89	$ 0.82
Purchase of common stock (in shares)	55,119	133,622	89,124

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net income	$ 48,085	$ 38,647	$ 45,318
Adjustments to reconcile net income to net cash and cash equivalents provided by operating activities:
Depreciation	3,052	3,128	3,072
Credit loss (benefit) expense	(5,507)	4,358	(2,880)
Net (gain) loss on sale of investment securities available for sale	0	(10)	28
Share-based compensation	25	25	14
Compensation expensed through issuance of common stock	1,618	1,272	1,133
Forfeiture of common stock	(455)	(257)	(262)
Provision for deferred income taxes	971	(520)	1,301
Net gain on sale of other real estate owned and other repossessed assets	(51)	(120)	(94)
Decrease (increase) in accrued interest receivable	740	265	(658)
Amortization of premium on investment securities, net	1,203	818	441
Decrease (increase) in other assets	392	1,228	(2,681)
Amortization of operating lease right of use assets	397	386	354
(Decrease) increase in accrued interest and other liabilities	(3,627)	(5,527)	650
Loans originated for sale	(429,343)	(475,187)	(299,223)
Proceeds on sales of loans	475,162	446,318	296,346
Net gain on sales of loans	(7,588)	(6,678)	(3,539)
Net cash and cash equivalents provided by operating activities	85,074	8,146	39,320
Cash Flows from Investing Activities
Proceeds from maturities of investment securities available for sale	91,459	85,530	63,301
Proceeds from sale of investment securities available for sale	0	313	12,467
Purchases of investment securities available for sale	(245,378)	(129,359)	(104,539)
Proceeds from sale of stock of FHLB	4,201	0	0
Purchases of stock of FHLB	(575)	0	0
Loans made to customers, net of collections	52,018	(72,138)	(13,024)
Proceeds on sale of other real estate owned and other repossessed assets	55	120	818
Purchases of property and equipment	(1,464)	(1,860)	(3,167)
Net changes from tax credit real estate investment	(4,183)	0	0
Net changes from tax credit real estate investment	1,641	1,007	913
Net cash and cash equivalents used in investing activities	(102,226)	(116,387)	(43,231)
Cash Flows from Financing Activities
Net increase in deposits	341,426	531,204	240,240
Net increase in short-term borrowings	249	0	0
Net decrease in FHLB borrowings	(105,000)	(80,000)	(30,000)
Borrowings from FRB	1	1	1
Payments on FRB borrowings	(1)	(1)	(1)
Issuance of common stock, net of costs	0	5,844	5,026
Stock options exercised	0	0	62
Purchase of treasury stock	(3,569)	(8,550)	(5,534)
Proceeds from the issuance of common stock through the employee stock purchase plan	427	413	434
Dividends paid	(8,773)	(8,325)	(7,657)
Net cash and cash equivalents used by financing activities	224,760	440,586	202,571
Increase in cash and cash equivalents	207,608	332,345	198,660
Cash and cash equivalents:
Beginning of year	574,310	241,965	43,305
End of year	781,918	574,310	241,965
Cash payments for:
Interest paid to depositors	15,280	22,294	27,878
Interest paid on other obligations	2,915	5,399	6,333
Income taxes paid	9,565	9,874	10,784
Noncash financing activities:
Increase (decrease) in maximum cash obligation related to ESOP shares	2,684	(4,497)	2,956
Transfers to other real estate owned	96	45	712
Sale and financing of other real estate owned	137	0	97
Right of use assets obtained in exchange for operating lease obligations	$ 0	$ 48	$ 3,581

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	12 Months Ended
	Dec. 31, 2021
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income	Accumulated Other Comprehensive Income The components of accumulated other comprehensive income (AOCI), included in stockholders’ equity, are as follows: December 31, 2021 2020 (amounts in thousands) Net unrealized gain on available-for-sale securities $ 1,968 $ 11,702 Net unrealized loss on derivatives used for cash flow hedges — — Tax effect (491) (2,920) Net-of-tax amount $ 1,477 $ 8,782

Nature of Activities and Signif

Nature of Activities and Significant Accounting Policies	12 Months Ended
	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of Activities and Significant Accounting Policies	Nature of Activities and Significant Accounting Policies Nature of activities : Hills Bancorporation (the "Company") is a holding company engaged in the business of commercial banking. The Company's subsidiary is Hills Bank and Trust Company, Hills, Iowa (the “Bank”), which is wholly-owned. The Bank is a full-service commercial bank extending its services to individuals, businesses, governmental units and institutional customers primarily in the communities of Hills, Iowa City, Coralville, North Liberty, Lisbon, Mount Vernon, Kalona, Wellman, Cedar Rapids, Marion and Washington, Iowa. The Bank competes with other financial institutions and non-financial institutions providing similar financial products. Although the loan activity of the Bank is diversified with commercial and agricultural loans, real estate loans, automobile, installment and other consumer loans, the Bank's credit is concentrated in real estate loans. All of the Company’s operations are considered to be one reportable operating segment. Accounting estimates : The preparation of consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amount of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates. Certain significant estimates : The allowance for credit losses, fair values of securities and other financial instruments, and share-based compensation expense involve certain significant estimates made by management. These estimates are reviewed by management routinely and it is reasonably possible that circumstances that exist at December 31, 2021 may change in the near-term and the effect could be material to the consolidated financial statements. Principles of consolidation : The consolidated financial statements include the accounts of the Company and its subsidiary. All significant intercompany balances and transactions have been eliminated in consolidation. Reclassification of prior year presentation : Certain prior year amounts have been reclassified for consistency with the current year presentation. These reclassifications had no effect on the reported results of operations. Revenue recognition : Accounting Standards Codification ("ASC") 606, Revenue from Contracts with Customers ("ASC 606"), establishes principles for reporting information about the nature, amount, timing and uncertainty of revenue and cash flows arising from the Company’s contracts to provide goods or services to customers. The core principle requires an entity to recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration that it expects to be entitled to receive in exchange for those goods or services recognized as performance obligations are satisfied. The majority of the Company’s revenue-generating transactions are not subject to ASC 606, including revenue generated from financial instruments, such as loans, letters of credit and investment securities as these activities are not subject to the requirements of ASC 606. Interest income on loans and investment securities is recognized on the accrual method in accordance with written contracts. Loan origination fees of mortgage loans originated for sale are recognized when the loans are sold. Descriptions of the Company’s revenue-generating activities that are within the scope of ASC 606 are the following: Service charges and fees on deposit accounts represent general service fees for monthly account maintenance and activity- or transaction-based fees and consist of transaction-based revenue which includes interchange income, time-based revenue (service period), item-based revenue or some other individual attribute-based revenue. Revenue is recognized when the Company’s performance obligation is completed which is generally monthly for account maintenance services or when a transaction has been completed (such as a wire transfer). Payment for such performance obligations are generally received at the time the performance obligations are satisfied. Trust income represents monthly fees due from wealth management customers as consideration for managing the customers' assets. Wealth management and trust services include custody of assets, investment management, fees for trust services and similar fiduciary activities. Revenue is recognized when our performance obligation is completed each month, which is generally the time that payment is received. 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. As of December 31, 2021 and 2020, the Company did not have any significant contract balances. 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. The Company did not capitalize any contract acquisition costs for the years ending December 31, 2021 and 2020. Cash and cash equivalents : The Company considers all investments with original maturities of three months or less to be cash equivalents. At December 31, 2021 and 2020, cash equivalents consisted primarily of deposits with other banks. Investment securities : Available-for-sale ("AFS") securities consist of debt securities not classified as trading or held to maturity. Available-for-sale securities are stated at fair value, and unrealized holding gains and losses, net of the related deferred tax effect, are reported as a separate component of stockholders' equity. There were no trading or held to maturity securities as of December 31, 2021 or 2020. Fair value measurement is based upon quoted market prices in active markets, if available. If quoted prices in active markets are not available, fair value is measured using pricing models or other model-based valuation techniques such as present value of future cash flows, which consider prepayment assumptions and other factors such as credit losses and market liquidity. Unrealized gains and losses are excluded from earnings and reported, net of tax, in other comprehensive income ("OCI"). Premiums on debt securities are amortized to the earliest call date and discounts on debt securities are accreted over the period to maturity of those securities. The method of amortization results in a constant effective yield on those securities (the interest method). Gains and losses on the sale of securities are recorded on the trade date and are determined using the specific identification method. AFS debt securities in unrealized loss positions are evaluated for impairment related to credit losses at least quarterly. For AFS debt securities, a decline in fair value due to credit loss results in recording an allowance for credit losses to the extent the fair value is less than the amortized cost basis. Declines in fair value that have not been recorded through an allowance for credit losses, such as declines due to changes in market interest rates, are recorded through other comprehensive income, net of applicable taxes. Impairment may result from credit deterioration of the issuer or collateral underlying the security. In performing an assessment of whether any decline in fair value is due to a credit loss, all relevant information is considered at the individual security level. For asset-backed securities performance indicators considered related to the underlying assets include default rates, delinquency rates, percentage of nonperforming assets, debt-to-collateral ratios, third-party guarantees, current levels of subordination, vintage, geographic concentration, analyst reports and forecasts, credit ratings and other market data. In assessing whether a credit loss exists, we compare the present value of cash flows expected to be collected from the security with the amortized cost basis of the security. If the present value of cash flows expected to be collected is less than the amortized cost basis for the security, a credit loss exists and an allowance for credit losses is recorded, limited to the amount the fair value is less than amortized cost basis. If we intend to sell a debt security or more likely than not we will be required to sell the security before recovery of its amortized cost basis, the debt security is written down to its fair value and the write down is charged against the allowance for credit losses with any incremental impairment reported in earnings. Accrued interest receivable on AFS debt securities totaled $2.05 million at December 31, 2021 and is excluded from the estimate of credit losses. Stock of the Federal Home Loan Bank is carried at cost. The Company has evaluated the stock and determined there is no impairment. Loans held for sale : Loans held for sale are stated at the lower of aggregate cost or estimated fair value. Loans are sold on a non-recourse basis with servicing released and gains and losses are recognized based on the difference between sales proceeds and the carrying value of the loan. The Company has had very few experiences of repurchasing loans previously sold into the secondary market. A specific reserve was not considered necessary based on the Company’s historical experience with repurchase activity. Loans held for investment : Loans are stated at the amount of unpaid principal, net of deferred loan fees, and reduced by the allowance for credit losses ("ACL"). Accrued interest receivable on loans held for investment totaled $9.29 million at December 31, 2021 and is excluded from the estimate of credit losses. Interest income is accrued on the unpaid principal balance. Nonrefundable loan fees and origination costs are deferred and recognized as a yield adjustment over the life of the related loan. The accrual of interest income on loans is discontinued when, in the opinion of management, there is reasonable doubt as to the borrower's ability to meet payments of interest or principal when they become due, which is generally when a loan is 90 days or more past due. When a loan is placed on nonaccrual status, all previously accrued and unpaid interest is reversed. Loans are returned to an accrual status when all of the principal and interest amounts contractually due are brought current and repayment of the remaining contractual principal and interest is expected. A loan may also return to accrual status if additional collateral is received from the borrower and, in the opinion of management, the financial position of the borrower indicates that there is no longer any reasonable doubt as to the collection of the amount contractually due. Payment received on nonaccrual loans are applied first to principal. Once principal is recovered, any remaining payments received are applied to interest income. As of December 31, 2021, none of the Company’s nonaccrual loans were earning interest on a cash basis. The policy for charging off loans is consistent throughout all loan categories. A loan is charged off based on criteria that includes but is not limited to: delinquency status, financial condition of the entire customer credit line and underlying collateral coverage, economic or external conditions that might impact full repayment of the loan, legal issues, overdrafts, and the customer’s willingness to work with the Company. Allowance for credit losses for loans held for investment : The allowance for credit losses is an estimate of expected losses inherent within the Company's existing loans held for investment portfolio. The allowance for credit losses for loans held for investment, as reported in our consolidated balance sheet, is adjusted by a credit loss expense, which is reported in earnings, and reduced by the charge-off of loan amounts, net of recoveries. The loan loss estimation process involves procedures to appropriately consider the unique characteristics of loan portfolio segments which consist of agricultural, 1 to 4 family first and junior liens, commercial, and consumer lending. These segments are further disaggregated into loan classes, the level at which credit risk is monitored. For each of these pools, the Company generates cash flow projections at the instrument level wherein payment expectations are adjusted for estimated prepayment speed, curtailments, time to recovery, probability of default, and loss given default. The modeling of expected prepayment speeds, curtailment rates, and time to recovery are based on historical internal data. The following provides the credit quality indicators and risk elements that are most relevant and most carefully considered and monitored for each loan portfolio segment. Agricultural - Agricultural operating loans include loans made to finance agricultural production and other loans to farmers and farming operations. Agricultural loans also include mortgage loans secured by farmland. Agricultural operating loans, most of which are secured by crops and machinery, are provided to finance capital improvement and farm operations as well as acquisitions of livestock and machinery. The ability of the borrower to repay may be affected by many factors outside of the borrower’s control including adverse weather conditions, loss of livestock due to disease or other factors, declines in market prices for agricultural products and the impact of government regulations. The ultimate repayment of agricultural operating loans is dependent upon the profitable operation or management of the agricultural entity. Agricultural operating loans generally have a term of one year and may have a fixed or variable rate. Mortgage loans secured by farmland are made to individuals and businesses within the Company's trade area. The primary source of repayment is the cash flow generated by the collateral underlying the loan. The secondary repayment source would be the liquidation of the collateral. Terms for real estate loans secured by farmland range from one to ten years with an amortization period of 25 years or less. Generally, interest rates are fixed for mortgage loans secured by farmland. Key economic forecasts used in estimating expected credit losses for this segment include the Iowa unemployment rate and the Iowa real gross domestic product (GDP). 1 to 4 Family First and Junior Liens - The 1 to 4 family first and junior liens portfolio segment is comprised of the single family and home equity loan classes, which are underwritten after evaluating a borrower's capacity to repay, credit, and collateral. Several factors are considered when assessing a borrower's capacity, including the borrower's employment, income, current debt, assets, and level of equity in the property. Credit refers to how well a borrower manages their current and prior debts as documented by a credit report that provides credit scores and the borrower's current and past information about their credit history. Collateral refers to the type and use of property, occupancy, and market value. Property appraisals are obtained to assist in evaluating collateral. Loan-to-property value and debt-to-income ratios, loan amount, and lien position are also considered in assessing whether to originate a loan. These borrowers are particularly susceptible to downturns in economic trends such as conditions that negatively affect housing prices and demand and levels of unemployment. Key economic forecasts used in estimating expected credit losses for this segment include the Iowa unemployment rate and the all-transactions house price index for Iowa. Commercial - The commercial loan portfolio segment is comprised of the commercial real estate mortgage, multifamily residential mortgage, construction/land development and commercial and financial loan classes, whose underwriting standards consider the factors described for single family and home equity loan classes as well as others when assessing the borrower's and associated guarantors or other related party's financial position. These other factors include assessing liquidity, the level and composition of net worth, leverage, considering all other lender amounts and position, an analysis of cash expected to flow through the obligors including the outflow to other lenders, vacancies and prior experience with the borrower. This information is used to assess adequate financial capacity, profitability, and experience. Ultimate repayment of these loans is sensitive to interest rate changes, general economic conditions, liquidity, and availability of long-term financing. Key economic forecasts used in estimating expected credit losses for this segment include the Iowa unemployment rate, the all-transactions house price index for Iowa and the Iowa real GDP. Consumer Lending - The Bank offers consumer loans to individuals including personal loans and automobile loans. These consumer loans typically have shorter terms, lower balances, higher yields and higher risks of default than real estate-related loans. Consumer loans collections are dependent on the borrower's continuing financial stability and are more likely to be affected by adverse personal circumstances. Collateral for these loans generally includes automobiles, boats, recreational vehicles and real estate. However, depending on the overall financial condition of the borrower, some loans are made on an unsecured basis. The collateral securing these loans may depreciate over time, may be difficult to recover and may fluctuate in value based on condition. Key economic forecasts used in estimating expected credit losses for this segment include the Iowa unemployment rate and the Iowa real GDP. The allowance level is influenced by loan volumes, loan credit quality indicator migration or delinquency status, historic loss experience and other conditions influencing loss expectations, such as reasonable and supportable forecasts of economic conditions. The methodology for estimating the amount of expected credit losses reported in the allowance for credit losses has two basic components: first, a pooled component for estimated expected credit losses for pools of loans that share similar risk characteristics; and second, an asset-specific component involving individual loans that do not share risk characteristics with other loans and the measurement of expected credit losses for such individual loans. Depending on the nature of the pool of financial assets with similar risk characteristics, the Company uses a discounted cash flow method or remaining life method to estimate expected credit losses. Discounted cash flow method : In estimating the component of the allowance for credit losses for loans that share similar risk characteristics with other loans, such loans are segregated into loan classes. Loans are designated into loan classes based on loans pooled by product types and similar risk characteristics or areas of risk concentration. In determining the allowance for credit losses, we derive an estimated credit loss assumption from a model that categorizes loan pools based on loan type and purpose. This model calculates an expected loss percentage for each loan class by considering the probability of default, using life-of-loan analysis periods for all loan segments, and the historical severity of loss, based on the aggregate net lifetime losses incurred per loan class. The default and severity factors used to calculate the allowance for credit losses for loans that share similar risk characteristics with other loans are adjusted for differences between the historical period used to calculate historical default and loss severity rates and expected conditions over the remaining lives of the loans in the portfolio related to: (1) lending policies and procedures; (2) international, national, regional and local economic business conditions and developments that affect the collectability of the portfolio; (3) the nature and volume of the loan portfolio including the terms of the loans; (4) the experience, ability, and depth of the lending management and other relevant staff; (5) the volume and severity of past due and adversely classified or graded loans and the volume of nonaccrual loans; (6) the quality of our loan review system and (7) the value of underlying collateral for collateralized loans. Additional factors include the existence and effect of any concentrations of credit, and changes in the level of such concentrations and the effect of external factors such as competition and legal and regulatory requirements on the level of estimated credit losses in the existing portfolio. Such factors are used to adjust the historical probabilities of default and severity of loss so that they reflect management expectation of future conditions based on a reasonable and supportable forecast. The Company uses regression analysis of historical internal and peer data to determine which variables are best suited to be economic variables utilized when modeling lifetime probability of default and loss given default. This analysis also determines how expected probability of default and loss given default will react to forecasted levels of the economic variables. For all DCF models, management has determined that four quarters represents a reasonable and supportable forecast period and reverts back to a historical loss rate over twelve quarters on a straight-line basis. Other internal and external indicators of economic forecasts are also considered by management when developing the forecast metrics. Remaining life method: Expected credit losses for credit cards and overdrafts are determined through use of the remaining life method. The remaining life method utilizes average annual charge-off rates and remaining life to estimate the allowance for credit losses. This is done by estimating the amount and timing of principal payments expected to be received as payment for the balance outstanding as of the reporting period and applying those principal payments against the balance outstanding as of the reporting period along with the average annual charge-off rate until the expected payments have been fully allocated. Collateral dependent financial assets : For a loan that does not share risk characteristics with other loans, expected credit loss is measured based on net realizable value, that is, the difference between the discounted value of the expected future cash flows, based on the original effective interest rate, and the amortized cost basis of the loan. For these loans, we recognize expected credit loss equal to the amount by which the net realizable value of the loan is less than the amortized cost basis of the loan (which is net of previous charge- offs and deferred loan fees and costs), except when the loan is collateral dependent, that is, when the borrower is experiencing financial difficulty and repayment is expected to be provided substantially through the operation or sale of the collateral. In these cases, expected credit loss is measured as the difference between the amortized cost basis of the loan and the fair value of the collateral. The fair value of the collateral is adjusted for the estimated cost to sell if repayment or satisfaction of a loan is dependent on the sale (rather than only on the operation) of the collateral. The Company’s estimate of the ACL reflects losses expected over the contractual life of the assets, adjusted for estimated prepayments or curtailments. The contractual term does not consider extensions, renewals or modifications unless the Company has identified an expected troubled debt restructure (TDR). A loan that has been modified or renewed is considered a TDR when two conditions are met: 1) the borrower is experiencing financial difficulty and 2) concessions are made for the borrower's benefit that would not otherwise be considered for a borrower or transaction with similar credit risk characteristics. The Company’s ACL reflects all effects of a TDR when an individual asset is specifically identified as a reasonably expected TDR. The Company has determined that a TDR is reasonably expected no later than the point when the lender concludes that modification is the best course of action and it is at least reasonably possible that the troubled borrower will accept some form of concession from the lender to avoid a default. Reasonably expected TDRs and executed non-performing TDRs are evaluated individually to determine the required ACL. TDRs performing in accordance with their modified contractual terms for a reasonable period of time may be included in the Company’s existing pools based on the underlying risk characteristics of the loan to measure the ACL. Allowance for credit losses on off-balance sheet credit exposures, including unfunded loan commitments : The Company maintains a separate allowance for credit losses from off-balance-sheet credit exposures, including unfunded loan commitments, which is disclosed on the balance sheet. Management estimates the amount of expected losses by calculating a commitment usage factor over the contractual period for exposures that are not unconditionally cancellable by the Company and applying the loss factors used in the ACL methodology to the results of the usage calculation to estimate the liability for credit losses related to unfunded commitments for each loan type. No credit loss estimate is reported for off-balance-sheet (OBS) credit exposures that are unconditionally cancellable by the Company, such as credit card receivables, or for undrawn amounts under such arrangements that may be drawn prior to the cancellation of the arrangement. The allowance for credit losses on OBS credit exposures is adjusted as credit loss expense. Categories of OBS credit exposures correspond to the loan portfolio segments described previously. Troubled debt restructurings (“TDR loans”) : A loan is accounted for and reported as a troubled debt restructuring ("TDR") when, for economic or legal reasons, we grant a concession to a borrower experiencing financial difficulty that we would not otherwise consider. These concessions may include rate reductions, principal forgiveness, extension of maturity date and other actions intended to minimize potential losses to the Company. A restructuring that results in only an insignificant delay in payment is not considered a concession. A delay may be considered insignificant if the payments subject to the delay are insignificant relative to the unpaid principal or collateral value and the contractual amount due, or the delay in timing of the restructured payment period is insignificant relative to the frequency of payments, the debt's original contractual maturity or original expected duration. TDRs that are performing and on accrual status as of the date of the modification remain on accrual status. TDRs that are nonperforming as of the date of modification generally remain as nonaccrual until the prospect of future payments in accordance with the modified loan agreement is reasonably assured, generally demonstrated when the borrower maintains compliance with the restructured terms for a predetermined period, normally at least six months. TDRs with temporary below-market concessions remain designated as a TDR regardless of the accrual or performance status until the loan is paid off. However, if the TDR loan has been modified in a subsequent restructure with market terms and the borrower is not currently experiencing financial difficulty, then the loan is no longer classified as a TDR in the quarter following the modification. Management evaluates loans where there is a reasonable expectation at the reporting date that a troubled debt restructuring will be executed with an individual borrower for purposes of estimating the allowance for credit losses. Section 4013 of the CARES Act, “Temporary Relief From Troubled Debt Restructurings,” allows financial institutions the option to temporarily suspend certain requirements under GAAP related to TDRs for a limited period of time during the COVID-19 pandemic. Under Section 4013 of the CARES Act, loan modifications that qualify for such suspension are those where the borrower was not more than 30 days past due as of December 31, 2019. In addition, the loan modification being made in response to the COVID-19 pandemic must include a deferral or delay in the payment of principal or interest, or change in the interest rate on the loan. In March 2020, various regulatory agencies, including the FRB and the FDIC, issued an interagency statement, effective immediately, on loan modifications and reporting for financial institutions working with customers affected by COVID-19. The agencies confirmed with the staff of the FASB that short-term modifications made on a good faith basis in response to COVID-19 to borrowers who were current prior to any relief are not to be considered TDRs. This includes short-term (e.g., six months) modifications, such as payment deferrals, fee waivers, extensions of repayment terms, or other 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. The relief related to TDRs expired on January 1, 2022. See Note 3 for further discussion. Transfers of financial assets : Transfers of financial assets are accounted for as sales, when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (1) the assets have been isolated from the Company, (2) the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets and (3) the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity or the ability to unilaterally cause the holder to return specific assets. Credit related financial instruments : In the ordinary course of business, the Company has entered into commitments to extend credit, including commitments under credit card arrangements, commercial letters of credit and standby letters of credit. Such financial instruments are recorded when they are funded. Tax credit real estate : Tax credit real estate represents three multi-family rental properties, three assisted living rental properties, a multi-tenant rental property for persons with disabilities, and a multi-family senior living rental property, all which are affordable housing projects as of December 31, 2021. The Bank has a 99% or greater limited partnership interest in each limited partnership. The investment in each was completed after the projects had been developed by the general partner. The Company evaluates the recoverability of the carrying value on a regular basis. If the recoverability was determined to be in doubt, a valuation allowance would be established by way of a charge to expense. Depreciation expense is provided on a straight-line basis over the estimated useful life of the assets. Expenditures for normal repairs and maintenance are charged to expense as incurred. The investments in tax credit real estate are recorded for all years presented using the equity method of accounting, with the exception of the investment in the affordable housing project described below. The operations of the properties are not expected to contribute significantly to the Company’s income before income taxes. However, the properties do contribute in the form of income tax credits, which lowers the Company’s effective tax rate. Once established, the credits on each property last for ten years and are passed through from the limited partnerships to the Bank and reduces the consolidated federal tax liability of the Company. In February 2021, the Company provided con

Investment Securities

Investment Securities	12 Months Ended
	Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Investment Securities	Investment Securities The carrying values of investment securities at December 31, 2021 and December 31, 2020 are summarized in the following table (Amounts in Thousands): December 31, 2021 December 31, 2020 Amount Percent Amount Percent Securities available for sale U.S. Treasury $ 243,925 44.24 % $ 148,646 36.40 % Other securities (FHLB, FHLMC and FNMA) 34,467 6.25 % 35,160 8.61 % State and political subdivisions 263,516 47.80 % 224,566 54.99 % Mortgage-backed securities and collateralized mortgage obligations 9,446 1.71 % — — % Total securities available for sale $ 551,354 100.00 % $ 408,372 100.00 % Investment securities have been classified in the consolidated balance sheets according to management’s intent. Available-for-sale securities consist of debt securities not classified as trading or held to maturity. Available-for-sale securities are stated at fair value, and unrealized holding gains and losses, net of the related deferred tax effect, are reported as a separate component of stockholders’ equity. Municipal bonds are comprised of general obligation bonds and revenue bonds issued by various municipal corporations. As of December 31, 2021 and 2020, all securities held were rated investment grade based upon external ratings where available and, where not available, based upon management knowledge of the local issuers and their financial situations. The Company had no securities designated as trading or held to maturity in its portfolio at December 31, 2021 or 2020. The carrying amount of available-for-sale securities and their approximate fair values were as follows (Amounts in Thousands): Amortized Gross Gross Allowance for Credit Losses Estimated December 31, 2021: U.S. Treasury $ 244,192 $ 2,011 $ (2,278) $ — $ 243,925 Other securities (FHLB, FHLMC and FNMA) 35,353 — (886) — 34,467 State and political subdivisions 260,266 4,420 (1,170) — 263,516 Mortgage-backed securities and collateralized mortgage obligations 9,575 — (129) — 9,446 Total $ 549,386 $ 6,431 $ (4,463) $ — $ 551,354 December 31, 2020: U.S. Treasury $ 143,467 $ 5,179 $ — $ — $ 148,646 Other securities (FHLB, FHLMC and FNMA) 35,195 35 (70) — 35,160 State and political subdivisions 218,008 6,674 (116) — 224,566 Total $ 396,670 $ 11,888 $ (186) $ — $ 408,372 The amortized cost and estimated fair value of available-for-sale securities classified according to their contractual maturities at December 31, 2021, were as follows (Amounts in Thousands). Amortized Fair Due in one year or less $ 68,862 $ 69,235 Due after one year through five years 308,895 309,142 Due after five years through ten years 113,536 115,364 Due over ten years 48,518 48,167 $ 539,811 $ 541,908 Mortgage-backed securities and collateralized mortgage obligations 9,575 9,446 $ 549,386 $ 551,354 Expected maturities of MBS may differ from contractual maturities because the mortgages underlying the securities may be called or prepaid without any penalties. Therefore, these securities are not included in the maturity categories in the above summary. As of December 31, 2021, investment securities with a carrying value of $10.03 million were pledged to collateralize other borrowings. As of December 31, 2021, 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. Sales proceeds and gross realized gains and losses on available-for-sale securities were as follows (in thousands): December 31, 2021 December 31, 2020 Sales proceeds $ — $ 313 Gross realized gains — 10 Gross realized losses — — The following table shows the Company’s investments’ gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at December 31, 2021 and 2020 (Amounts in Thousands): Less than 12 months 12 months or more Total 2021 Description # Fair Value Unrealized Loss % # Fair Value Unrealized Loss % # Fair Value Unrealized Loss % of Securities U.S. Treasury 55 $ 136,867 $ (2,203) 1.61 % 1 $ 2,416 $ (75) 3.10 % 56 $ 139,283 $ (2,278) 1.64 % Other securities (FHLB, FHLMC and FNMA) 5 12,484 (303) 2.43 % 9 21,984 (583) 2.65 % 14 34,468 (886) 2.57 % State and political subdivisions 231 70,542 (1,055) 1.50 % 14 9,248 (115) 1.24 % 245 79,790 (1,170) 1.47 % Mortgage-backed securities and collateralized mortgage obligations 4 9,446 (129) 1.37 % — — — — % 4 9,446 (129) 1.37 % 295 $ 229,339 (3,690) 1.61 % 24 $ 33,648 $ (773) 2.30 % 319 $ 262,987 $ (4,463) 1.70 % Less than 12 months 12 months or more Total 2020 Description # Fair Value Unrealized Loss % # Fair Value Unrealized Loss % # Fair Value Unrealized Loss % of Securities U.S. Treasury — $ — $ — — % — $ — $ — — % — $ — $ — — % Other securities (FHLB, FHLMC and FNMA) 8 20,019 (70) 0.35 % — — — — % 8 20,019 (70) 0.35 % State and political subdivisions 35 14,168 (110) 0.78 % 4 370 (6) 1.62 % 39 14,538 (116) 0.80 % 43 $ 34,187 $ (180) 0.53 % 4 $ 370 $ (6) 1.62 % 47 $ 34,557 $ (186) 0.54 % The Company considered the following information in reaching the conclusion that the impairments disclosed in the table above are temporary and not other-than-temporary impairments. None of the unrealized losses in the above table was due to the deterioration in the credit quality of any of the issues that might result in the non-collection of contractual principal and interest. The unrealized losses are due to changes in interest rates. The Company has not recognized any unrealized loss in income because management does not have the intent to sell the securities included in the previous table. Management has concluded that it is more likely than not that the Company will not be required to sell these securities prior to recovery of the amortized cost basis. The securities are of high credit quality (investment grade credit ratings) and principal and interest payments are made timely with no payments past due as of December 31, 2021. The fair value is expected to recover as the securities approach maturity. The U.S. Treasury and other securities are issued and guaranteed by U.S. government-sponsored entities and agencies. The mortgage-backed securities and collateralized mortgage obligations have implied U.S. government guarantees of the agency securities. The Company evaluates if a credit loss exists by monitoring to ensure it has adequate credit support considering the nature of the investment, number and significance of investments in an unrealized loss position, collectability or delinquency issues, the underlying financial statements of the issuers, credit ratings and subsequent changes thereto, and other available relevant information. Considering the above factors, management has determined that no allowance for credit losses is necessary for the securities portfolio as of December 31, 2021.

Loans

Loans	12 Months Ended
	Dec. 31, 2021
Receivables [Abstract]
Loans	Loans Classes of loans are as follows: December 31, 2021 2020 (Amounts In Thousands) Agricultural $ 106,933 $ 94,842 Commercial and financial 222,002 286,242 Real estate: Construction, 1 to 4 family residential 80,486 71,117 Construction, land development and commercial 127,021 111,913 Mortgage, farmland 232,744 247,142 Mortgage, 1 to 4 family first liens 909,564 892,089 Mortgage, 1 to 4 family junior liens 114,342 127,833 Mortgage, multi-family 382,792 374,014 Mortgage, commercial 401,377 417,139 Loans to individuals 32,687 31,325 Obligations of state and political subdivisions 50,285 56,488 2,660,233 2,710,144 Net unamortized fees and costs 299 938 2,660,532 2,711,082 Less allowance for credit losses (2021) and loan losses (2020) 35,470 37,070 $ 2,625,062 $ 2,674,012 As of December 31, 2021 and 2020, the Company has outstanding balances of $5.34 million and $86.5 million of loans issued under the Paycheck Protection Program (PPP). For the year ended December 31, 2021, the Company recognized $5.81 million of deferred PPP loan fees in interest income and received forgiveness payments totaling $140.1 million from the SBA. For the year ended December 31, 2020, the Company recognized $2.88 million of PPP loan fees in interest income and has received forgiveness payments totaling $40.4 million from the SBA. Changes in the allowance for credit losses, the allowance for credit losses applicable to individually evaluated loans and the related loan balances for the years ended December 31, 2021, 2020 and 2019 are as follows: Agricultural Commercial and Financial Real Estate: Construction Real Estate: Real Estate: Real Estate: Other Total (Amounts In Thousands) 2021 Allowance for credit losses: Beginning balance, prior to adoption of ASC 326 $ 2,508 $ 4,885 $ 2,319 $ 4,173 $ 12,368 $ 9,415 $ 1,402 $ 37,070 Impact of adopting ASC 326 (328) 298 327 763 522 1,396 (232) 2,746 Charge-offs (106) (136) (3) (1) (482) (265) (323) (1,316) Recoveries 142 1,103 94 25 964 263 152 2,743 Credit loss (benefit) expense 45 (1,881) (437) (1,527) (1,874) (311) 212 (5,773) Ending balance $ 2,261 $ 4,269 $ 2,300 $ 3,433 $ 11,498 $ 10,498 $ 1,211 $ 35,470 Ending balance, individually evaluated for credit losses $ 1 $ 189 $ 124 $ — $ 49 $ 1 $ 20 $ 384 Ending balance, collectively evaluated for credit losses $ 2,260 $ 4,080 $ 2,176 $ 3,433 $ 11,449 $ 10,497 $ 1,191 $ 35,086 Loan balances: Ending balance $ 106,933 $ 222,002 $ 207,507 $ 232,744 $ 1,023,906 $ 784,169 $ 82,972 $ 2,660,233 Ending balance, individually evaluated for credit losses $ 788 $ 2,062 $ 603 $ 1,277 $ 6,187 $ 5,696 $ 20 $ 16,633 Ending balance, collectively evaluated for credit losses $ 106,145 $ 219,940 $ 206,904 $ 231,467 $ 1,017,719 $ 778,473 $ 82,952 $ 2,643,600 Agricultural Commercial and Financial Real Estate: Construction Real Estate: Real Estate: Real Estate: Other Total (Amounts In Thousands) 2020 Allowance for loan losses: Beginning balance $ 2,400 $ 4,988 $ 2,599 $ 3,950 $ 10,638 $ 7,859 $ 1,326 $ 33,760 Charge-offs (43) (1,425) (43) (1) (738) (291) (381) (2,922) Recoveries 63 670 118 10 784 49 180 1,874 Provision 88 652 (355) 214 1,684 1,798 277 4,358 Ending balance $ 2,508 $ 4,885 $ 2,319 $ 4,173 $ 12,368 $ 9,415 $ 1,402 $ 37,070 Ending balance, individually evaluated for impairment $ 86 $ 411 $ 7 $ — $ 93 $ 14 $ 51 $ 662 Ending balance, collectively evaluated for impairment $ 2,422 $ 4,474 $ 2,312 $ 4,173 $ 12,275 $ 9,401 $ 1,351 $ 36,408 Loan balances: Ending balance $ 94,842 $ 286,242 $ 183,030 $ 247,142 $ 1,019,922 $ 791,153 $ 87,813 $ 2,710,144 Ending balance, individually evaluated for impairment $ 1,543 $ 2,191 $ 1,266 $ 2,061 $ 7,417 $ 6,200 $ 51 $ 20,729 Ending balance, collectively evaluated for impairment $ 93,299 $ 284,051 $ 181,764 $ 245,081 $ 1,012,505 $ 784,953 $ 87,762 $ 2,689,415 Agricultural Commercial and Financial Real Estate: Construction Real Estate: Real Estate: Real Estate: Other Total (Amounts In Thousands) 2019 Allowance for loan losses: Beginning balance $ 2,789 $ 5,826 $ 3,292 $ 3,972 $ 12,516 $ 8,165 $ 1,250 $ 37,810 Charge-offs (266) (981) (45) (6) (896) (341) (434) (2,969) Recoveries 95 646 8 5 700 180 165 1,799 Provision (218) (503) (656) (21) (1,682) (145) 345 (2,880) Ending balance $ 2,400 $ 4,988 $ 2,599 $ 3,950 $ 10,638 $ 7,859 $ 1,326 $ 33,760 Ending balance, individually evaluated for impairment $ 87 $ 792 $ — $ — $ 111 $ 1 $ 93 $ 1,084 Ending balance, collectively evaluated for impairment $ 2,313 $ 4,196 $ 2,599 $ 3,950 $ 10,527 $ 7,858 $ 1,233 $ 32,676 Loan balances: Ending balance $ 91,317 $ 221,323 $ 188,619 $ 242,730 $ 1,059,969 $ 752,942 $ 82,204 $ 2,639,104 Ending balance, individually evaluated for impairment $ 1,730 $ 2,742 $ 421 $ 4,081 $ 8,670 $ 3,188 $ 93 $ 20,925 Ending balance, collectively evaluated for impairment $ 89,587 $ 218,581 $ 188,198 $ 238,649 $ 1,051,299 $ 749,754 $ 82,111 $ 2,618,179 Changes in the allowance for credit losses for off-balance sheet credit exposures for the year ended December 31, 2021 were as follows: Year Ended December 31, 2021 Agricultural Commercial and Real Estate: Real Estate: Real Estate: Real Estate: Other Total (Amounts In Thousands) Allowance for credit losses for off-balance sheet credit exposures: Beginning balance, prior to adoption of ASC 326 $ — $ — $ — $ — $ — $ — $ — $ — Impact of adopting ASC 326 385 1,585 736 180 471 212 15 3,584 Credit loss (benefit) expense (2) (467) 113 (67) 323 347 19 266 (Charge-offs), net recoveries — — — — — — — — Ending balance $ 383 $ 1,118 $ 849 $ 113 $ 794 $ 559 $ 34 $ 3,850 Credit loss (benefit) expense for off-balance sheet credit exposures is included in credit loss (benefit) expense on the consolidated statement of income for the year ended December 31, 2021. Management regularly reviews loans in the portfolio to assess credit quality indicators and to determine appropriate loan classification and grading in accordance with applicable bank regulations. The Company's risk rating methodology assigns risk ratings ranging from 1 to 6, where a higher rating represents higher risk. The Company differentiates its lending portfolios into loans sharing common risk characteristics for which expected credit loss is measured on a pool basis and loans not sharing common risk characteristics for which credit loss is measured individually. The below are descriptions of the credit quality indicators: Excellent – Excellent rated loans are prime quality loans covered by highly liquid collateral with generous margins or supported by superior current financial conditions reflecting substantial net worth, relative to total credit extended, and based on assets of a stable and non-speculative nature whose values can be readily verified. Identified repayment source or cash flow is abundant and assured. Loans are secured with cash, cash equivalents, or collateral with very low loan to values. The borrower would qualify for unsecured debt and guarantors provide excellent secondary support to the relationship. The borrower has a long-term relationship with Hills Bank, maintains high deposit balances and has an established payment history with Hills Bank and an established business in an established industry. Good – Good rated loans are adequately secured by readily marketable collateral or good financial condition characterized by liquidity, flexibility and sound net worth. Loans are supported by sound primary and secondary payment sources and timely and accurate financial information. The relationship is not quite as strong as a borrower that is assigned an excellent rating but still has a very strong liquidity position, low leverage, and track record of strong performance. These loans have a strong collateral position with limited risk to bank capital. The collateral will not materially lose value in a distressed liquidation. Guarantors provide additional secondary support to mitigate possible bank losses. The borrower has a long-term relationship with Hills Bank with an established track record of payments; loans with shorter remaining loan amortization; deposit balances are consistent; loan payments could be made from cash reserves in the interim period; and source of income is coming from a stable industry. Satisfactory – Satisfactory rated loans are loans to borrowers of average financial means not especially vulnerable to changes in economic or other circumstances, where the major support for the extension is sufficient collateral of a marketable nature, and the primary source of repayment is seen to be clear and adequate. The borrower's financial performance is consistent, ratios and trends are positive and the primary repayment source can clearly be identified and supported with acceptable financial information. The loan relationship could be vulnerable to changes in economic or industry conditions but have the ability to absorb unexpected issues. The loan collateral coverage is considered acceptable and guarantors can provide financial support but net worth might not be as liquid as a 1 or 2 rated relationship. The borrower has an established relationship with Hills Bank. The relationship is making timely loan payments, any operating line is revolving and deposit balances are positive with limited to no overdrafts. Management and industry is considered stable. Monitor – Monitor rated loans are identified by management as warranting special attention for a variety of reasons that may bear on ultimate collectability. This may be due to adverse trends, a particular industry, loan structure, or repayment that is dependent on projections, or a one-time occurrence . The relationship l iquidity levels are minimal and the borrower’s leverage position is brought into question. The primary repayment source is showing signs of being stressed or is not proven. If the borrower performs as planned, the loan will be repaid. The collateral coverage is still considered acceptable but there might be some concern with the type of real estate securing the debt or highly dependent on chattel assets. Some loans may be better secured than others. Guarantors still provide some support but there is not an abundance of financial strength supporting the guaranty. A monitor credit may be appropriate when the borrower is experiencing rapid growth which is impacting liquidity levels and increasing debt levels. Other attributes to consider would include if the business is a start-up or newly acquired, if the relationship has significant financing relationships with other financial institutions, the quality of financial information being received, management depth of the company, and changes to the business model. The track history with Hills Bank has some deficiencies such as slow payments or some overdrafts. Special Mention – Special mention rated loans are supported by a marginal payment capacity and are marginally protected by collateral. There are identified weaknesses that if not monitored and corrected may adversely affect the Company’s credit position. A special mention credit would typically have a weakness in one of the general categories (cash flow, collateral position or payment history) but not in all categories. Potential indicators of a special mention would include past due payments, overdrafts, management issues, poor financial performance, industry issues, or the need for additional short-term borrowing. The ability to continue to make payments is in question; there are “red flags” such as past due payments, non- revolving credit lines, overdrafts, and the inability to sell assets. The borrower is experiencing delinquent taxes, legal issues, etc., obtaining financial information has become a challenge, collateral coverage is marginal at best, and the value and condition could be brought into question. Collateral document deficiencies have been noted and if not addressed, could become material. Guarantors provide minimal support for this relationship. The credit may include an action plan or follow up established in the asset quality process. There is a change in the borrower’s communication pattern. Industry issues may be impacting the relationship. Adverse credit scores or history of payment deficiencies could be noted. Substandard – Substandard loans are not adequately supported by the paying capacity of the borrower and may be inadequately collateralized. These loans have a well-defined weakness or weaknesses. Full repayment of the loan(s) according to the original terms and conditions is in question or not expected. For these loans, it is more probable than not that the Company could sustain some loss if the deficiency(ies) is not corrected. There are identified shortfalls in the primary repayment source such as carry over debt, past due payments, and overdrafts. Obtaining quality and timely financial information is a weakness. The loan is under secured with exposure that could impact bank capital. It appears the liquidation of collateral has become the repayment source. The collateral may be difficult to foreclose or have little to no value. Collateral documentation deficiencies have been noted during the review process. Guarantor(s) provide minimal to no support of the relationship. The borrower’s communication with the Bank continues to decrease and the borrower is not addressing the situation. There is some concern about the borrower’s ability and willingness to repay the loans. Problems may be the result of external issues such as economic or industry related issues. The following tables present the credit quality indicators and origination years by type of loan in each category as of December 31, 2021 (amounts in thousands): Agricultural December 31, 2021 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Total Grade: Excellent $ 762 $ 213 $ 30 $ 10 $ — $ — $ 2,312 $ 3,327 Good 1,799 1,767 603 46 52 26 7,593 11,886 Satisfactory 10,335 6,404 1,476 1,770 403 66 26,285 46,739 Monitor 8,125 5,017 998 765 164 253 23,995 39,317 Special Mention 1,662 11 85 — 7 — 2,807 4,572 Substandard 592 69 203 — — — 228 1,092 Total $ 23,275 $ 13,481 $ 3,395 $ 2,591 $ 626 $ 345 $ 63,220 $ 106,933 Commercial and Financial December 31, 2021 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Total Grade: Excellent $ 965 $ 924 $ 4 $ 235 $ 31 $ — $ 3,391 $ 5,550 Good 13,722 5,570 1,105 1,086 276 1,494 20,709 43,962 Satisfactory 44,964 20,847 7,684 3,582 2,106 331 41,832 121,346 Monitor 18,337 8,019 3,591 1,123 297 416 13,368 45,151 Special Mention 603 525 353 70 102 4 174 1,831 Substandard 1,092 670 266 54 92 — 1,988 4,162 Total $ 79,683 $ 36,555 $ 13,003 $ 6,150 $ 2,904 $ 2,245 $ 81,462 $ 222,002 Real Estate: Construction, 1 to 4 Family Residential December 31, 2021 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Total Grade: Excellent $ — $ — $ — $ — $ — $ — $ — $ — Good 212 — — — — — 18,755 18,967 Satisfactory 7,457 94 — — — — 42,988 50,539 Monitor 1,307 — — — — — 9,187 10,494 Special Mention — — — — — — 374 374 Substandard 111 — — — — — 1 112 Total $ 9,087 $ 94 $ — $ — $ — $ — $ 71,305 $ 80,486 Real Estate: Construction, Land Development and Commercial December 31, 2021 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Total Grade: Excellent $ 5,079 $ — $ — $ — $ 143 $ 4 $ — $ 5,226 Good 3,294 1,200 — — 153 242 12,678 17,567 Satisfactory 22,907 4,354 2,356 263 1,081 21 40,048 71,030 Monitor 5,694 547 7 38 74 — 18,832 25,192 Special Mention — — — — — — — — Substandard 7,515 298 193 — — — — 8,006 Total $ 44,489 $ 6,399 $ 2,556 $ 301 $ 1,451 $ 267 $ 71,558 $ 127,021 Real Estate: Mortgage, Farmland December 31, 2021 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Total Grade: Excellent $ — $ 3,568 $ 124 $ 60 $ 80 $ 41 $ 134 $ 4,007 Good 17,827 14,308 2,144 2,460 5,932 3,929 3,844 50,444 Satisfactory 51,639 35,616 4,689 8,358 6,745 8,339 8,242 123,628 Monitor 8,532 16,925 5,518 3,901 2,154 4,866 5,695 47,591 Special Mention 4,031 288 — — 298 190 — 4,807 Substandard 1,283 447 291 47 — 199 — 2,267 Total $ 83,312 $ 71,152 $ 12,766 $ 14,826 $ 15,209 $ 17,564 $ 17,915 $ 232,744 Real Estate: Mortgage, 1 to 4 Family First Liens December 31, 2021 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Total Grade: Excellent $ 462 $ 914 $ 427 $ 19 $ 149 $ 404 $ 1 $ 2,376 Good 9,598 12,300 3,124 3,443 3,091 10,943 2,496 44,995 Satisfactory 233,412 189,247 69,037 65,201 60,906 118,608 8,443 744,854 Monitor 24,908 33,863 5,038 6,527 7,273 12,203 4,066 93,878 Special Mention 1,682 3,422 887 962 1,051 3,168 — 11,172 Substandard 1,571 1,261 1,129 1,609 576 6,142 1 12,289 Total $ 271,633 $ 241,007 $ 79,642 $ 77,761 $ 73,046 $ 151,468 $ 15,007 $ 909,564 Real Estate: Mortgage, 1 to 4 Family Junior Liens December 31, 2021 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Total Grade: Excellent $ — $ 13 $ — $ — $ — $ — $ 6 $ 19 Good 193 611 96 — 108 482 1,374 2,864 Satisfactory 13,684 10,116 5,854 7,309 5,230 6,053 55,496 103,742 Monitor 326 1,233 70 365 140 281 2,801 5,216 Special Mention 103 489 35 56 42 110 142 977 Substandard 77 209 79 441 74 99 545 1,524 Total $ 14,383 $ 12,671 $ 6,134 $ 8,171 $ 5,594 $ 7,025 $ 60,364 $ 114,342 Real Estate: Mortgage, Multi-Family December 31, 2021 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Total Grade: Excellent $ 2,539 $ 4,513 $ — $ — $ — $ 701 $ — $ 7,753 Good 16,931 35,396 1,555 — — 9,289 — 63,171 Satisfactory 107,192 69,287 13,635 2,030 1,561 14,660 14,764 223,129 Monitor 26,088 35,886 176 — 131 1,584 5,669 69,534 Special Mention 640 — 820 — — — — 1,460 Substandard 12,186 — — — — 5,559 — 17,745 Total $ 165,576 $ 145,082 $ 16,186 $ 2,030 $ 1,692 $ 31,793 $ 20,433 $ 382,792 Real Estate: Mortgage, Commercial December 31, 2021 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Total Grade: Excellent $ 597 $ 16,781 $ — $ — $ 3,313 $ 350 $ 1 $ 21,042 Good 20,143 36,773 2,619 1,356 3,811 7,085 9,812 81,599 Satisfactory 75,040 52,653 14,727 12,091 9,707 17,398 16,333 197,949 Monitor 18,664 49,774 3,923 2,202 3,037 8,461 3,387 89,448 Special Mention 5,791 795 303 — 554 337 — 7,780 Substandard 1,528 1,721 — 208 — 102 — 3,559 Total $ 121,763 $ 158,497 $ 21,572 $ 15,857 $ 20,422 $ 33,733 $ 29,533 $ 401,377 Loans to Individuals December 31, 2021 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Total Grade: Excellent $ — $ — $ — $ — $ — $ — $ — $ — Good — — 67 21 5 — 1 94 Satisfactory 12,162 5,606 2,212 967 141 10,867 57 32,012 Monitor 200 160 15 46 3 — 1 425 Special Mention 37 32 29 4 — — 1 103 Substandard 12 24 12 — 1 3 1 53 Total $ 12,411 $ 5,822 $ 2,335 $ 1,038 $ 150 $ 10,870 $ 61 $ 32,687 Obligations of State and Political Subdivisions December 31, 2021 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Total Grade: Excellent $ — $ — $ — $ — $ — $ 6,076 $ — $ 6,076 Good — 1,984 — — — 9,051 — 11,035 Satisfactory 1,009 2,034 1,551 706 11,557 3,634 9,400 29,891 Monitor — 933 203 249 — 1,898 — 3,283 Special Mention — — — — — — — — Substandard — — — — — — — — Total $ 1,009 $ 4,951 $ 1,754 $ 955 $ 11,557 $ 20,659 $ 9,400 $ 50,285 The following table presents the credit quality indicators by type of loans in each category as of December 31, 2020: Agricultural Commercial Real Estate: Real Estate: (Amounts In Thousands) 2020 Grade: Excellent $ 3,761 $ 9,024 $ — $ 227 Good 12,369 62,310 13,675 15,187 Satisfactory 42,015 144,999 41,616 64,301 Monitor 29,381 56,439 13,654 23,368 Special Mention 5,143 8,258 1,857 7,137 Substandard 2,173 5,212 315 1,693 Total $ 94,842 $ 286,242 $ 71,117 $ 111,913 Real Estate: Real Estate: Real Estate: Real Estate: 2020 Grade: Excellent $ 5,706 $ 2,303 $ 204 $ 14,650 Good 41,878 47,233 3,707 57,281 Satisfactory 129,210 701,273 115,731 197,493 Monitor 61,298 114,207 5,153 70,885 Special Mention 6,074 12,890 1,307 15,374 Substandard 2,976 14,183 1,731 18,331 Total $ 247,142 $ 892,089 $ 127,833 $ 374,014 Real Estate: Loans to Obligations of state Total 2020 Grade: Excellent $ 26,940 $ 1 $ 6,752 $ 69,568 Good 92,699 145 13,094 359,578 Satisfactory 196,310 30,487 26,571 1,690,006 Monitor 77,125 479 9,924 461,913 Special Mention 19,731 127 147 78,045 Substandard 4,334 86 — 51,034 Total $ 417,139 $ 31,325 $ 56,488 $ 2,710,144 Past due loans as of December 31, 2021 and 2020 were as follows: 30 - 59 Days 60 - 89 Days 90 Days Total Past Current Total Accruing Loans (Amounts In Thousands) December 31, 2021 Agricultural $ 41 $ — $ 219 $ 260 $ 106,673 $ 106,933 $ 6 Commercial and financial 300 537 468 1,305 220,697 222,002 91 Real estate: Construction, 1 to 4 family residential 276 — — 276 80,210 80,486 — Construction, land development and commercial 194 66 96 356 126,665 127,021 — Mortgage, farmland 503 362 — 865 231,879 232,744 — Mortgage, 1 to 4 family first liens 5,085 864 2,481 8,430 901,134 909,564 104 Mortgage, 1 to 4 family junior liens 246 41 124 411 113,931 114,342 — Mortgage, multi-family 640 — — 640 382,152 382,792 — Mortgage, commercial 466 — 829 1,295 400,082 401,377 — Loans to individuals 177 26 5 208 32,479 32,687 — Obligations of state and political subdivisions 394 — — 394 49,891 50,285 — $ 8,322 $ 1,896 $ 4,222 $ 14,440 $ 2,645,793 $ 2,660,233 $ 201 30 - 59 Days 60 - 89 Days 90 Days Total Past Current Total Accruing Loans (Amounts In Thousands) December 31, 2020 Agricultural $ 438 $ — $ 629 $ 1,067 $ 93,775 $ 94,842 $ 111 Commercial and financial 867 195 140 1,202 285,040 286,242 20 Real estate: Construction, 1 to 4 family residential 190 — 536 726 70,391 71,117 536 Construction, land development and commercial — — — — 111,913 111,913 — Mortgage, farmland 279 28 — 307 246,835 247,142 — Mortgage, 1 to 4 family first liens 4,969 1,342 2,486 8,797 883,292 892,089 342 Mortgage, 1 to 4 family junior liens 436 21 155 612 127,221 127,833 47 Mortgage, multi-family — — — — 374,014 374,014 — Mortgage, commercial 783 — 461 1,244 415,895 417,139 — Loans to individuals 218 59 4 281 31,044 31,325 — Obligations of state and political subdivisions — — — — 56,488 56,488 — $ 8,180 $ 1,645 $ 4,411 $ 14,236 $ 2,695,908 $ 2,710,144 $ 1,056 The Company does not have a significant amount of loans that are past due less than 90 days where there are serious doubts as to the ability of the borrowers to comply with the loan repayment terms. Accruing loans past due 90 days or more decreased $0.86 million from December 31, 2020 to December 31, 2021. As of December 31, 2021 and 2020, accruing loans past due 90 days or more were 0.01% and 0.04% of total loans, respectively. The average balance of the accruing loans past due 90 days or more decreased in 2021 as compared to 2020. The average 90 days or more past due accruing loan balance per loan was $0.03 million as of December 31, 2021 compared to $0.09 million as of December 31, 2020. The loans 90 days or more past due and still accruing are believed to be adequately collateralized. Loans are placed on nonaccrual status when management believes the collection of future principal and interest is not reasonably assured. Certain nonaccrual and TDR loan information by loan type at December 31, 2021 and 2020 was as follows: December 31, 2021 December 31, 2020 Nonaccrual Interest income recognized on non-accrual Accruing loans TDR Nonaccrual Accruing loans TDR (Amounts In Thousands) (Amounts In Thousands) Agricultural $ 221 $ — $ 6 $ 374 $ 1,252 $ 111 $ 85 Commercial and financial 707 — 91 1,085 479 20 1,263 Real estate: Construction, 1 to 4 family residential 111 — — — 315 536 — Construction, land development and commercial 290 — — 202 204 — 211 Mortgage, farmland 251 — — 1,206 446 — 1,616 Mortgage, 1 to 4 family first liens 4,685 — 104 1,364 4,331 342 1,751 Mortgage, 1 to 4 family junior liens 200 — — 20 193 47 20 Mortgage, multi-family — — — 1,460 79 — 1,695 Mortgage, commercial 2,026 — — 2,210 1,550 — 3,610 Loans to individuals — — — — — — — $ 8,491 $ — $ 201 $ 7,921 $ 8,849 $ 1,056 $ 10,251 (1) There were $2.28 million and $2.97 million of TDR loans included within nonaccrual loans as of December 31, 2021 and 2020, respectively. The Company may modify the terms of a loan to maximize the collection of amounts due. In most cases, the modification is a reduction in interest rate, conversion to interest only payments or an extension of the maturity date. The borrower is experiencing financial difficulties or is expected to experience financial difficulties in the near-term, so a concessionary modification is granted to the borrower that would otherwise not be considered. TDR loans accrue interest as long as the borrower complies with the revised terms and conditions and has demonstrated repayment performance at a level commensurate with the modified terms over several payment cycles. Section 4013 of the CARES Act, “Temporary Relief From Troubled Debt Restructurings,” allows financial institutions the option to temporarily suspend certain requirements under GAAP related to TDRs for a limited period of time during the COVID-19 pandemic. As of December 31, 2021, the total amount of the eligible loans in deferral (deferral of principal and/or interest) that met the requirements set forth under the CARES Act and therefore were not considered TDRs was 16 loans, totaling $9.4 million. As of December 31, 2020, there were 13 loans, totaling $9.4 million that met the requirements and were not considered TDRs. Throughout 2020, COVID-19 related payment deferrals provided for customers totaled approximately 14.82% of total loans. As of December 31, 2021 and 2020, COVID-19 related payment deferrals were approximately 0.12% and 1.20% of total loans, respectively. Below is a summary of information for TDR loans as of December 31, 2021 and 2020: December 31, 2021 Number of Recorded Commitments (Dollar Amounts In Thousands) Agricultural 4 $ 586 $ — Commercial and financial 12 1,116 60 Real estate: Construction, 1 to 4 family residential — — — Construction, land development and commercial 1 202 — Mortgage, farmland 5 1,409 — Mortgage, 1 to 4 family first liens 14 1,441 — Mortgage, 1 to 4 family junior liens 1 20 — Mortgage, multi-family 2 1,460 — Mortgage, commercial 11 3,963 — Loans to individuals — — — 50 $ 10,197 $ 60 December 31, 2020 Number of Recorded Commitments (Dollar Amounts In Thousands) Agricultural 6 $ 1,028 $ — Commercial and financial 17 1,743 35 Real estate: Construction, 1 to 4 family residential — — — Construction, land development and commercial 1 211 4 Mortgage, farmland 6 2,009 — Mortgage, 1 to 4 family first liens 17 1,898 — Mortgage, 1 to 4 family junior liens 1 20 — Mortgage, multi-family 2 1,695 — Mortgage, commercial 13 4,621 — Loans to individuals — — — 63 $ 13,225 $ 39 A summary of TDR loans that were modified during the year ended December 31, 2021 and 2020 was as follows: December 31, 2021 Number of Pre-modification Post-modification ( Dollar Amounts In Thousands) Agricultural 1 $ 178 $ 178 Commercial and financial — — — Real estate: Construction, 1 to 4 family residential — — — Construction, land development and commercial — — — Mortgage, farmland 1 319 319 Mortgage, 1 to 4 family first liens 4 112 112 Mortgage, 1 to 4 family junior liens — — — Mortgage, multi-family — — — Mortgage, commercial 1 232 232 Loans to individuals — — — 7 $ 841 $ 841 December 31, 2020 Number of Pre-modification Post-modification ( Dollar Amounts In Thousands) Agricultural 2 $ 93 $ 93 Commercial and financial 7 623 623 Real estate: Construction, 1 to 4 family residential — — — Construction, land development and commercial — — — Mortgage, farmland — — — Mortgage, 1 to 4 family first liens 6 283 283 Mortgage, 1 to 4 family junior liens 1 20 20 Mortgage, multi-family — — — Mortgage, commercial 7 3,635 3,635 Loans to individuals — — — 23 $ 4,654 $ 4,654 . The Company has allocated $0.01 million of allowance for TDR loans and the Company had commitments to lend $0.06 million in additional borrowings to restructured loan customers as of December 30, 2021. The Company allocated $0.25 million of allowance for TDR loans and had commitments to lend $0.04 million in additional borrowings to restructured loan customers as of December 31, 2020. These commitments were in the normal course of business. The additional borrowings were not used to facilitate payments on these loans. The modifications of the terms of loans performed during the years ended December 31, 2021 and 2020 included extensions of the maturity date. There were no TDR loans modified that were in payment default (defined as past due 90 days or more) during the years ended December 31, 2021 and 2020. The following table presents the amortized cost basis of collateral dependent loans, by the primary collateral type, which are individually evaluated to determine expected credit losses, and the related ACL allocated to these loans: Primary Type of Collateral Real Estate Accounts Receivable Equipment Other Total ACL Allocation (Amounts In Thousands) December 31, 2021 Agricultural $ 734 $ — $ 54 $ — $ 788 $ 1 Commercial and financial 1,951 — 111 — 2,062 189 Real estate: Construction, 1 to 4 family residential 111 — — — 111 111 Construction, land development and commercial 492 — — — $ 492 13 Mortgage, farmland 1,277 — — — 1,277 — Mortgage, 1 to 4 family first liens 5,967 — — — $ 5,967 31 Mortgage, 1 to 4 family junior liens 220 — — — 220 18 Mortgage, multi-family 1,460 — — — $ 1,460 — Mortgage, commercial 4,236 — — — 4,236 1 Loans to individuals 20 — — — $ 20 20 Obligations of state and political subdivisions — — — — — — $ 16,468 $ — $ 165 $ — $ 16,633 $ 384 Pre-ASC 326 (CECL) adoption impaired loan information as of December 31, 2020 is as follows: Recorded Unpaid Related Average Interest (Amounts in Thousands) 2020 With no related allowance recorded: Agricultural $ 1,337 $ 1,928 $ — $ 1,518 $ 24 Commercial and financial 1,520 2,907 — 2,054 85 Real estate: Construction, 1 to 4 family residential 315 337 — 475 — Construction, land development and commercial 415 421 — 420 13 Mortgage, farmland 2,061 2,598 — 3,008 120 Mortgage, 1 to 4 family first liens 6,253 8,013 — 6,578 108 Mortgage, 1 to 4 family junior liens 108 350 — 134 — Mortgage, multi-family 1,773 1,898 — 1,795 80 Mortgage, commercial 4,124 4,960 — 4,315 126 Loans to individuals — 47 — — — $ 17,906 $ 23,459 $ — $ 20,297 $ 556 With an allowance recorded: Agricultural $ 206 $ 206 $ 86 $ 141 $ 14 Commercial and financial 671 724 411 755 27 Real estate: Construction, 1 to 4 family residential 536 536 7 486 24 Construction, land development and commercial — — — — — Mortgage, farmland — — — — — Mortgage, 1 to 4 family first liens 924 975 56 955 25 Mortgage, 1 to 4 family junior liens 132 158 37 149 2 Mortgage, multi-family — — — — — Mortgage, commercial 303 304 14 306 3 Loans to individuals 51 51 51 53 3 $ 2,823 $ 2,954 $ 662 $ 2,845 $ 98 Total: Agricultural $ 1,543 $ 2,134 $ 86 $ 1,659 $ 38 Commercial and financial 2,191 3,631 411 2,809 112 Real estate: Construction, 1 to 4 family residential 851 873 7 961 24 Construction, land development and commercial 415 421 — 420 13 Mortgage, farmland 2,061 2,598 — 3,008 120 Mortgage, 1 to 4 family first liens 7,177 8,988 56 7,533 133 Mortgage, 1 to 4 family junior liens 240 508 37 283 2 Mortgage, multi-family 1,773 1,898 — 1,795 80 Mortgage, commercial 4,427 5,264 14 4,621 129 Loans to individuals 51 98 51 53 3 $ 20,729 $ 26,413 $ 662 $ 23,142 $ 654 Information regarding impaired loans as of and for the year ended December 31, 2019 is as follows: Recorded Unpaid Related Average Interest (Amounts in Thousands) 2019 With no related allowance recorded: Agricultural $ 1,596 $ 2,157 $ — $ 1,785 $ 37 Commercial and financial 1,340 2,220 — 1,617 64 Real estate: Construction, 1 to 4 family residential 101 144 — 106 — Construction, land development and commercial 320 336 — 324 18 Mortgage, farmland 4,081 4,613 — 4,144 157 Mortgage, 1 to 4 family first liens 7,157 9,015 — 6,822 51 Mortgage, 1 to 4 family junior liens — 246 — — — Mortgage, multi-family 1,816 1,930 — 1,873 83 Mortgage, commercial 1,302 1,852 — 1,364 26 Loans to individuals — 14 — — — $ 17,713 $ 22,527 $ — $ 18,035 $ 436 With an allowance recorded: Agricultural $ 134 $ 134 $ 87 $ 287 $ 17 Commercial and financial 1,402 1,539 792 1,510 83 Real estate: Construction, 1 to 4 family residential — — — — — Construction, land development and commercial — — — — — Mortgage, farmland — — — — — Mortgage, 1 to 4 family first liens 1,280 1,501 64 1,318 29 Mortgage, 1 to 4 family junior liens 233 233 47 239 6 Mortgage, multi-family — — — — — Mortgage, commercial 70 70 1 73 4 Loans to individuals 93 93 93 62 2 $ 3,212 $ 3,570 $ 1,084 $ 3,489 $ 141 Total: Agricultural $ 1,730 $ 2,291 $ 87 $ 2,072 $ 54 Commercial and financial 2,742 3,759 792 3,127 147 Real estate: Construction, 1 to 4 fam

Property and Equipment

Property and Equipment	12 Months Ended
	Dec. 31, 2021
Property, Plant and Equipment [Abstract]
Property and Equipment	Property and Equipment The major classes of property and equipment and the total accumulated depreciation are as follows: December 31, 2021 2020 (Amounts In Thousands) Land $ 11,266 $ 11,266 Buildings and improvements 38,041 37,512 Furniture and equipment 40,989 40,053 90,296 88,831 Less accumulated depreciation 56,006 52,953 Net $ 34,290 $ 35,878

Leases

Leases	12 Months Ended
	Dec. 31, 2021
Leases [Abstract]
Leases	Leases The Bank leases branch offices, parking facilities and certain equipment under operating leases. The leases have remaining lease terms of 1 year to 15 years, some of which include options to extend the leases for up to 10 years, and some of which include options to terminate the leases within 1 year. As the options are reasonably certain to be exercised, they are recognized as part of the right-of-use assets and lease liabilities. For the years ended December 31, 2021 and 2020, total operating lease expense was $0.59 million and $0.56 million, respectively, and is included in occupancy expenses in the consolidated statement of income. Included in this were $0.51 million and $0.47 million of operating lease costs, respectively, $0.03 million and $0.03 million of short term lease costs, respectively, and $0.05 million and $0.06 million of variable lease costs, respectively. For the years ended December 31, 2021 and 2020, cash paid for amounts included in the measurement of operating lease liabilities was $0.51 million and $0.47 million, respectively, and right-of-use assets obtained in exchange for lease obligations was none and $0.05 million, respectively. As of December 31, 2021 and 2020, operating lease right-of-use assets included in other assets were $2.47 million and $2.86 million, respectively. Operating lease liabilities included in other liabilities were $2.53 million and $2.91 million, respectively. The weighted average remaining lease term for operating leases was 9.94 years and 10.27 years, respectively, and the weighted average discount rate for operating leases was 3.49% and 3.45%, respectively. Discount rates used were determined from FHLB borrowing rates for comparable terms. As of December 31, 2021, maturities of lease liabilities were as follows: Year ending December 31: (Amounts In Thousands) 2022 464 2023 317 2024 250 2025 253 2026 257 Thereafter 1,499 Total lease payments 3,040 Less imputed interest (507) Total operating lease liabilities $ 2,533

Interest-Bearing Deposits

Interest-Bearing Deposits	12 Months Ended
	Dec. 31, 2021
Interest-bearing Deposit Liabilities [Abstract]
Interest-Bearing Deposits	Interest - Bearing Deposits A summary of these deposits is as follows: December 31, 2021 2020 (Amounts In Thousands) NOW and other demand $ 964,730 $ 801,550 Savings 1,338,910 1,161,324 Time, $250,000 and over 88,517 114,260 Other time 508,736 583,244 $ 2,900,893 $ 2,660,378 Brokered deposits totaled $51.59 million and $74.08 million as of December 31, 2021 and 2020, respectively, with an average interest rate of 0.36% and 0.34% as of December 31, 2021 and 2020, respectively. As of December 31, 2021, brokered deposits of $51.59 million are included in savings deposits. At December 31, 2020, brokered deposits of $74.08 million were included in savings deposits. Time deposits have a maturity as follows: December 31, 2021 2020 (Amounts In Thousands) Due in one year or less $ 320,764 $ 307,962 Due after one year through two years 174,043 190,763 Due after two years through three years 63,193 150,275 Due after three years through four years 23,108 39,089 Due over four years 16,145 9,415 $ 597,253 $ 697,504

Federal Home Loan Bank Borrowin

Federal Home Loan Bank Borrowings	12 Months Ended
	Dec. 31, 2021
Federal Home Loan Banks [Abstract]
Federal Home Loan Bank Borrowings	Federal Home Loan Bank Borrowings As of December 31, 2021 and 2020, the borrowings were as follows: 2021 2020 (Effective interest rates as of December 31, 2021) (Amounts In Thousands) Due 2025, 2.81% to 2.94% — 45,000 Due 2026, 2.52% to 2.86% — 30,000 Due 2027, 2.76% to 2.95% — 30,000 $ — $ 105,000 On December 21, 2021 the Company paid the remaining $105.00 million in FHLB Borrowings due in 2025 through 2027. Fees incurred with the 2021 prepayments were $7.69 million and were recorded in other noninterest expenses. On November 9, 2020 the Company paid $25.00 million in FHLB Borrowings due in 2020. On December 30, 2020 the Company paid $25.00 million in FHLB Borrowings that were due in 2023, $15.00 million in FHLB Borrowings due in 2024 and $15.00 million in FHLB Borrowings due in 2025. Fees incurred with the 2020 prepayments were $2.53 million and recorded in other noninterest expenses. To participate in the FHLB advance program, the Company is required to have an investment in FHLB stock. The Company’s investment in FHLB stock was $4.55 million and $8.17 million at December 31, 2021 and 2020, respectively. Collateral is provided by the Company’s 1 to 4 family mortgage loans totaling none at December 31, 2021 and $141.75 million at December 31, 2020. The Company has the ability to borrow against agricultural real estate, commercial real estate and multi-family loans totaling $300.93 million as of December 31, 2021 and $315.86 million as of December 31, 2020 and there was $0 borrowed against this collateral as of December 31, 2021 or 2020.

Employee Benefit Plans

Employee Benefit Plans	12 Months Ended
	Dec. 31, 2021
Retirement Benefits [Abstract]
Employee Benefit Plans	Employee Benefit PlansThe Company has an Employee Stock Purchase Plan (the “ESPP”). For each quarterly offering period, eligible employees can elect to contribute from 1% to 15% of his or her compensation. The purchase price is the lesser of 90% of the fair market value on the first day of the offering period or the last day of the offering period. The maximum dollar amount any one employee can elect to contribute in a year is $9,000. During the year ended December 31, 2021, 7,334 shares of stock were purchased by employees of the Bank through the ESPP. 7,449 shares of stock were purchased by employees of the Bank through the ESPP for the year ended December 31, 2020. The Company has an Employee Stock Ownership Plan (the "ESOP") to which it makes discretionary cash contributions. The Company's contribution to the ESOP totaled $1.27 million, $1.27 million and $1.08 million for the years ended December 31, 2021, 2020 and 2019, respectively. The 2021, 2020 and 2019 discretionary contribution rate was 4.5% of qualified salaries. In the event a terminated plan participant desires to sell his or her shares of the Company stock, or for certain employees who elect to diversify their account balances, the Company may be required to purchase the shares from the participant at their fair value. To the extent that shares of common stock held by the ESOP are not readily traded, a sponsor must reflect the maximum cash obligation related to those securities outside of stockholders' equity. The Company obtains a quarterly independent appraisal of the shares of stock. As of December 31, 2021 and 2020, the shares held by the ESOP, fair value and maximum cash obligation were as follows: 2021 2020 Shares held by the ESOP 735,482 757,262 Fair value per share $ 68.00 $ 62.50 Maximum cash obligation $ 50,013,000 $ 47,329,000 The Company has a profit-sharing plan with a 401(k) feature, which provides for discretionary annual contributions in amounts to be determined by the Board of Directors. The Company made a 4.50% or $1.27 million contribution to the profit sharing plan for the year ended December 31, 2021. The Company made a 4.50% or $1.27 million contribution to the profit sharing plan for the year ended December 31, 2020. The Company made a 4.50% or $1.08 million contribution to the profit sharing plan for the year ended December 31, 2019. The Company made matching contributions under its 401(k) plan of $0.26 million in 2021, $0.26 million in 2020, and $0.22 million in 2019 and each such amount is included in salaries and employee benefits expense. The Company provides a deferred compensation program for executive officers. This program allows executive officers to elect to defer a portion of their salaried compensation for payment by the Company at a subsequent date. The executive officers can defer up to 30% of their base compensation and up to 100% of any bonus into the deferral plan. Any amount so deferred is credited to the executive officer’s deferred compensation account and converted to units equivalent in value to the fair market value of a share of stock in Hills Bancorporation. The “stock units” are book entry only and do not represent an actual purchase of stock. The executive officer’s account is adjusted each year for dividends paid and the change in the market value of Hills Bancorporation stock. The deferrals and earnings grow tax deferred until withdrawn from the plan. Earnings credited to the individual’s accounts are recorded as compensation expense when earned. The deferred compensation liability is recorded in other liabilities and totals $1.94 million and $3.31 million at December 31, 2021 and 2020, respectively. Expense related to the deferred compensation plan was $0.25 million for 2021, $(0.02) million for 2020 and $0.42 million for 2019 and is included in salaries and employee benefits expense. The Company also provides a deferred compensation program for its Board of Directors. Under the plan, each director may elect to defer up to 50% of such director’s cash compensation from retainers and meeting fees for payment by the Company at a subsequent date. Any amount so deferred is credited to the director’s deferred compensation account and converted to units equivalent in value to the fair market value of a share of stock in Hills Bancorporation. The “stock units” are book entry only and do not represent an actual purchase of stock. The director’s account is adjusted each year for dividends paid and the change in the market value of Hills Bancorporation stock. The deferred compensation liability for the directors’ plan is recorded in other liabilities and totaled $4.08 million and $3.78 million at December 31, 2021 and 2020, respectively. Expense related to the directors’ deferred compensation plan was $0.38 million for 2021, $(0.09) million for 2020 and $0.28 million for 2019 and is included in other noninterest expense. The Company has a Stock Option and Incentive Plan for certain key employees and directors whereby shares of common stock have been reserved for awards in the form of stock options or restricted stock awards. Under the plan, the aggregate number of options and shares granted cannot exceed 250,000 shares. A Stock Option Committee may grant options at prices equal to the fair value of the stock at the date of the grant. Options expire 10 years from the date of the grant. Director options and officers' rights under the plan vest over a five-year period from the date of the grant. The fair value of each option is estimated as of the date of grant using a Black Scholes option pricing model. The expected lives of options granted incorporate historical employee exercise behavior. The risk-free rate for periods that coincide with the expected life of the options is based on the ten year interest rate swap rate as published by the Federal Reserve Bank on the date of issuance. Expected volatility is based on volatility levels of the Company’s peers’ common stock as the Company’s stock has limited trading activity. Expected dividend yield was based on historical dividend rates. Significant assumptions at the date of grant on May 14, 2019 include the risk-free interest rate of 2.39%, expected option life of 7.5 years, expected volatility of 33% and expected dividends of 1.23%. There were no stock options granted in 2021 and 2020 and 5,805 in 2019. The weighted-average fair value of options granted in 2019 was $21.31 per share. The intrinsic value of options exercised was $0.00 million, $0.00 million and $0.06 million for 2021, 2020 and 2019, respectively. A summary of the stock options is as follows: Number of Shares Weighted- Weighted-Average Aggregate Balance, December 31, 2018 9,020 $ 33.30 3.41 250 Granted 5,805 Exercised (1,800) Balance, December 31, 2019 13,025 $ 45.92 5.47 248 Granted — Exercised — Balance, December 31, 2020 13,025 $ 45.92 4.47 216 Granted — Exercised — Balance, December 31, 2021 13,025 $ 45.92 3.47 $ 288 Other pertinent information related to the options outstanding at December 31, 2021 is as follows: Exercise Price Number Outstanding Remaining Contractual Life Number Exercisable 33.00 7,220 4 months 7,220 62.00 5,805 89 months — 13,025 7,220 As of December 31, 2021, the outstanding options have a weighted-average exercise price of $45.92 per share and a weighted average remaining contractual term of 3.47 years. There was $0.06 million in unrecognized compensation cost for stock options granted under the plan as of December 31, 2021. The cost is expected to be recognized over a weighted-average period of 2.40 years. As of December 31, 2021, the vested options totaled 7,220 shares with a weighted-average exercise price of $33.00 per share. As of December 31, 2021, 208,543 shares were available for stock options and awards under the 2020 Stock Option and Incentive Plan (2020 Plan). The 2010 Stock Option and Incentive Plan (2010 Plan) was discontinued upon the approval of the 2020 Plan in April 2020. No stock options or stock awards will be issued from the 2010 Plan after April 2020. The Compensation and Incentive Stock Committee is also authorized to grant awards of restricted common stock. A summary of the restricted stock option activity for the year ended December 31, 2021 is as follows: 2020 Stock Option and Incentive Plan 2010 Stock Option and Incentive Plan Number of Shares Weighted Average Grant Date Fair Value Number of Shares Weighted Average Grant Date Fair Value Balance, December 31, 2020 231,425 22,864 Authorization of shares — — Granted 24,513 $66.01 — $0.00 Forfeited 1,631 $62.81 6,452 $54.61 Balance, December 31, 2021 208,543 29,316 The Company authorized the issuance of 24,513 shares in 2021, 20,427 shares in 2020, and 23,527 shares in 2019 to certain employees. The vesting period for these awards is five years and the Bank amortizes the expense on a straight line basis during the vesting period. The expense relating to these awards for the years ended December 31, 2021, 2020 and 2019 was $0.92 million, $0.95 million and $0.96 million, respectively. 12,800, 10,800 and 7,200 shares of the restricted common stock shares awarded in December 31, 2021, 2020 and 2019, are subject to forfeiture upon termination of the employee's employment with the Company within eight years of the award.

Income Taxes

Income Taxes	12 Months Ended
	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Income Taxes	Income Taxes Income taxes for the years ended December 31, 2021, 2020 and 2019 are summarized as follows: 2021 2020 2019 (Amounts In Thousands) Current: Federal $ 10,383 $ 9,124 $ 8,857 State 2,653 2,673 2,391 Deferred: Federal 757 (417) 1,068 State 214 (103) 233 $ 14,007 $ 11,277 $ 12,549 Temporary differences between the amounts reported in the consolidated financial statements and the tax basis of assets and liabilities result in deferred taxes. Deferred tax assets and liabilities at December 31, 2021 and 2020 were as follows: December 31, 2021 2020 (Amounts In Thousands) Deferred income tax assets: Allowance for credit losses $ 8,849 $ 9,249 Deferred compensation and unearned restricted stock 2,239 2,401 Allowance for credit losses on off-balance sheet credit exposures 961 — Accrued expenses 611 589 State net operating loss 1,094 1,011 Gross deferred tax assets $ 13,754 $ 13,250 Valuation allowance (1,094) (1,011) Deferred tax asset, net of valuation allowance $ 12,660 $ 12,239 Deferred income tax liabilities: Property and equipment 1,852 1,941 Unrealized gains on investment securities 491 2,920 Goodwill 407 407 Prepaid expenses 400 431 Other 385 452 Gross deferred tax liabilities $ 3,535 $ 6,151 Net deferred tax assets $ 9,125 $ 6,088 The Company has recorded a deferred tax asset for the future tax benefits of Iowa net operating loss carry-forwards. The net operating loss carry-forwards are generated by the Company largely from its investment in tax credit real estate properties. The Company is required to file a separate Iowa tax return and cannot be consolidated with the Bank. The net operating loss carry-forwards will expire, if not utilized, between 2022 and 2040. The Company has recorded a valuation allowance to reduce the deferred tax asset attributable to the net operating loss carry-forwards. At December 31, 2021 and 2020, the Company believes it is more likely than not that the Iowa net operating loss carry-forwards will not be realized. A valuation allowance related to the remaining deferred tax assets has not been provided because management believes it is more likely than not that the results of future operations will generate sufficient taxable income to realize the deferred tax assets. The valuation allowance increased by $83,000 and $82,000 for the years ended December 31, 2021 and 2020, respectively. The net change in the deferred income taxes for the years ended December 31, 2021, 2020 and 2019 is reflected in the consolidated financial statements as follows: Year Ended December 31, 2021 2020 2019 (Amounts In Thousands) Consolidated statements of income $ 971 $ (520) $ 1,301 Consolidated statements of stockholders' equity (4,008) 2,450 1,550 $ (3,037) $ 1,930 $ 2,851 Income tax expense for the years ended December 31, 2021, 2020 and 2019 are less than the amounts computed by applying the maximum effective federal income tax rate to the income before income taxes because of the following items: 2021 2020 2019 Amount % Of Amount % Of Amount % Of (Amounts In Thousands) Expected tax expense $ 13,039 21.0 % $ 10,484 21.0 % $ 12,152 20.9 % Tax-exempt interest (1,176) (1.9) (1,219) (2.4) (1,201) (2.1) Interest expense limitation 50 0.1 79 0.1 109 0.2 State income taxes, net of federal income tax benefit 2,265 3.7 2,030 4.1 2,073 3.5 Income tax credits (475) (0.8) (51) (0.1) (531) (0.9) Other 304 0.5 (46) (0.1) (53) 0.1 $ 14,007 22.6 % $ 11,277 22.6 % $ 12,549 21.7 % Federal income tax expense for the years ended December 31, 2021, 2020 and 2019 was computed using the consolidated effective federal tax rate. The Company also recognized income tax expense pertaining to state franchise taxes payable individually by the subsidiary bank. The Company files a consolidated tax return for federal purposes and separate tax returns for the State of Iowa purposes. The tax years ended December 31, 2021, 2020, 2019 and 2018, remain subject to examination by the Internal Revenue Service. For state tax purposes, the tax years ended December 31, 2021, 2020, 2019 and 2018, remain open for examination. There were no material unrecognized tax benefits at December 31, 2021 and December 31, 2020. No interest or penalties on these unrecognized tax benefits has been recorded. As of December 31, 2021, the Company does not anticipate any significant increase or decrease in unrecognized tax benefits during the twelve month period ending December 31, 2022.

Regulatory Capital Requirements

Regulatory Capital Requirements, Restrictions on Subsidiary Dividends and Cash Restrictions	12 Months Ended
	Dec. 31, 2021
Regulatory Capital Requirements, Restrictions on Subsidiary Dividends and Cash Restrictions [Abstract]
Regulatory Capital Requirements, Restrictions on Subsidiary Dividends and Cash Restrictions	Regulatory Capital Requirements, Restrictions on Subsidiary Dividends and Cash Restrictions The Company and the Bank are subject to various regulatory capital requirements administered by the federal and state banking agencies. 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 financial results. Under capital adequacy guidelines and the regulatory frameworks for prompt corrective action, the Company and the Bank 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. Capital amounts and classifications of the Company and the Bank are also subject to qualitative judgments by the regulators about components, risk weightings and other factors. Quantitative measures established by the regulations to ensure capital adequacy require the Company and the Bank to maintain minimum amounts and ratios of capital. Under the BASEL III rules, the minimum capital ratios are 4% for Tier 1 Leverage Capital Ratio, 4.5% for the Common Equity Tier 1 Capital Ratio, 6% for the Tier 1 Risk-Based Capital Ratio and 8% for the Total Risk-Based Capital Ratio. A capital conservation buffer of 2.5% of risk-weighted assets was completely phased in beginning January 1, 2019. As of March 31, 2020, the Bank elected to use the Community Bank Leverage Ratio (CBLR) framework as provided for in the Economic Growth, Regulatory Relief and Consumer Protection Act. Under the CBLR framework, the Bank is required to maintain a CBLR of greater than 9%. The Coronavirus Aid, Relief and Economic Security ("CARES") Act reduced the minimum ratio to 8% beginning in the 2nd quarter of 2020 through December 31, 2020, increasing to 8.5% for 2021 and returning to 9% beginning January 1, 2022. Management believes that, as of December 31, 2021 and 2020, the Company and the Bank met all capital adequacy requirements to which they are subject. As of December 31, 2021 and 2020, the most recent notifications from the Federal Reserve System categorized the Bank as well-capitalized under the regulatory framework for prompt corrective action. To be categorized as well-capitalized, the Bank must maintain minimum total risk-based, Tier 1 risk-based, Tier 1 common equity and Tier 1 leverage ratios as set forth in the table that follows. There are no conditions or events since that notification that management believes have changed the Bank's category. The actual amounts and capital ratios as of December 31, 2021 and 2020, with the minimum regulatory requirements for the Company and Bank are presented below (amounts in thousands): Actual For Capital Adequacy Purposes Amount Ratio Ratio As of December 31, 2021: Company: Community Bank Leverage Ratio $ 484,486 11.80 % 8.50 % Bank: Community Bank Leverage Ratio 484,429 11.80 8.50 Actual For Capital Adequacy Purposes Amount Ratio Ratio As of December 31, 2020: Company: Community Bank Leverage Ratio $ 452,123 11.91 % 8.00 % Bank: Community Bank Leverage Ratio 453,073 11.94 8.00 The ability of the Company to pay dividends to its stockholders is dependent upon dividends paid by the Bank. The Bank is subject to certain statutory and regulatory restrictions on the amount it may pay in dividends. To maintain acceptable capital ratios in the Bank, certain of its retained earnings are not available for the payment of dividends. To maintain a ratio of capital to assets of 8.50%, retained earnings of $135.62 million as of December 31, 2021 are available for the payment of dividends to the Company. The Bank is required to maintain reserve balances in cash or with the Federal Reserve Bank. Reserve balances totaled $752.99 million and $541.05 million as of December 31, 2021 and 2020, respectively.

Related Party Transactions

Related Party Transactions	12 Months Ended
	Dec. 31, 2021
Related Party Transactions [Abstract]
Related Party Transactions	Related Party TransactionsCertain directors of the Company and the Bank, companies with which the directors are affiliated, and certain principal officers are customers of, and have banking transactions with, the Bank in the ordinary course of business. Such indebtedness has been incurred on substantially the same terms, including interest rates and collateral, as those prevailing at the time for comparable transactions with unrelated persons. The following is an analysis of the changes in the loans to related parties during the years ended December 31, 2021 and 2020: Year Ended December 31, 2021 2020 (Amounts In Thousands) Balance, beginning $ 54,053 $ 55,717 Net increase due to change in related parties 735 — Advances 23,671 14,406 Collections (25,614) (16,070) Balance, ending $ 52,845 $ 54,053 Deposits from these related parties totaled $21.27 million and $13.18 million as of December 31, 2021 and 2020, respectively. Deposits from related parties are accepted subject to the same interest rates and terms as those from nonrelated parties.

Fair Value Measurements

Fair Value Measurements	12 Months Ended
	Dec. 31, 2021
Fair Value Disclosures [Abstract]
Fair Value Measurements	Fair Value Measurements The carrying value and estimated fair values of the Company’s financial instruments as of December 31, 2021 are as follows: December 31, 2021 Carrying Estimated Readily Observable Company (Amounts In Thousands) Financial instrument assets: Cash and cash equivalents $ 781,918 $ 781,918 $ 781,918 $ — $ — Investment securities 555,900 555,900 243,925 311,975 — Loans held for sale 5,716 5,716 — 5,716 — Loans Agricultural 104,672 103,745 — — 103,745 Commercial and financial 217,733 216,466 — — 216,466 Real estate: Construction, 1 to 4 family residential 79,668 79,311 — — 79,311 Construction, land development and commercial 125,539 124,466 — — 124,466 Mortgage, farmland 229,311 228,365 — — 228,365 Mortgage, 1 to 4 family first liens 901,523 897,255 — — 897,255 Mortgage, 1 to 4 family junior liens 111,184 110,903 — — 110,903 Mortgage, multi-family 379,077 378,193 — — 378,193 Mortgage, commercial 394,594 391,950 — — 391,950 Loans to individuals 31,916 31,871 — — 31,871 Obligations of state and political subdivisions 49,845 50,155 — — 50,155 Accrued interest receivable 11,437 11,437 — 11,437 — Total financial instrument assets $ 3,980,033 $ 3,967,651 $ 1,025,843 $ 329,128 $ 2,612,680 Financial instrument liabilities: Deposits Noninterest-bearing deposits $ 633,101 $ 633,101 $ — $ 633,101 $ — Interest-bearing deposits 2,900,893 2,909,243 — 2,909,243 — Other borrowings 249 249 — 249 — Federal Home Loan Bank borrowings — — — — — Accrued interest payable 1,165 1,165 — 1,165 — Total financial instrument liabilities $ 3,535,408 $ 3,543,758 $ — $ 3,543,758 $ — Face Amount Financial instrument with off-balance sheet risk: Loan commitments $ 614,324 $ — $ — $ — $ — Letters of credit 7,179 — — — — Total financial instrument liabilities with off-balance-sheet risk $ 621,503 $ — $ — $ — $ — (1) Considered Level 1 under Accounting Standards Codification (“ASC”) Topic 820, Fair Value Measurements and Disclosures (“ASC 820”). (2) Considered Level 2 under ASC 820. (3) Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market. The carrying value and estimated fair values of the Company’s financial instruments as of December 31, 2020 are as follows: December 31, 2020 Carrying Estimated Readily Observable Company (Amounts In Thousands) Financial instrument assets: Cash and cash equivalents $ 574,310 $ 574,310 $ 574,310 $ — $ — Investment securities 416,544 416,544 148,646 267,898 — Loans held for sale 43,947 43,947 — 43,947 — Loans Agricultural 92,334 92,922 — — 92,922 Commercial and financial 281,357 282,015 — — 282,015 Real estate: Construction, 1 to 4 family residential 70,210 70,432 — — 70,432 Construction, land development and commercial 110,501 110,039 — — 110,039 Mortgage, farmland 242,969 242,978 — — 242,978 Mortgage, 1 to 4 family first liens 882,156 890,409 — — 890,409 Mortgage, 1 to 4 family junior liens 126,336 124,945 — — 124,945 Mortgage, multi-family 369,552 370,538 — — 370,538 Mortgage, commercial 412,186 413,409 — — 413,409 Loans to individuals 30,573 31,164 — — 31,164 Obligations of state and political subdivisions 55,838 59,300 — — 59,300 Accrued interest receivable 12,177 12,177 — 12,177 — Total financial instrument assets $ 3,720,990 $ 3,735,129 $ 722,956 $ 324,022 $ 2,688,151 Financial instrument liabilities: Deposits Noninterest-bearing deposits $ 532,190 $ 532,190 $ — $ 532,190 $ — Interest-bearing deposits 2,660,378 2,673,815 — 2,673,815 — Federal Home Loan Bank Borrowings 105,000 115,259 — 115,259 — Accrued interest payable 1,733 1,733 — 1,733 — Total financial instrument liabilities $ 3,299,301 $ 3,322,997 $ — $ 3,322,997 $ — Face Amount Financial instrument with off-balance sheet risk: Loan commitments $ 483,602 $ — $ — $ — $ — Letters of credit 8,056 — — — — Total financial instrument liabilities with off-balance-sheet risk $ 491,658 $ — $ — $ — $ — (1) Considered Level 1 under Accounting Standards Codification (“ASC”) Topic 820, Fair Value Measurements and Disclosures (“ASC 820”). (2) Considered Level 2 under ASC 820. (3) Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market Fair value of financial instruments : FASB ASC 820, Fair Value Measurements and Disclosures (“ASC 820”) provides a single definition for fair value, a framework for measuring fair value and expanded disclosures concerning fair value. Fair value is defined under ASC 820 as the exchange price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. The Company determines the fair market value of its financial instruments based on the fair value hierarchy established in ASC 820. There are three levels of inputs that may be used to measure fair value as follows: Level 1 Quoted prices in active markets for identical assets or liabilities. Level 2 Observable inputs other than quoted prices included within Level 1. Observable inputs include the quoted prices for similar assets or liabilities in markets that are not active and inputs other than quoted prices that are observable for the asset or liability. Level 3 Unobservable inputs supported by little or no market activity for financial instruments. Level 3 assets and liabilities include financial instruments whose value is determined using pricing models, discounted cash flow methodologies, or similar techniques, as well as instruments for which the determination of fair value requires significant management judgment or estimation. It is the Company’s policy to maximize the use of observable inputs and minimize the use of unobservable inputs when developing fair value measurements. The Company is required to use observable inputs, to the extent available, in the fair value estimation process unless that data results from forced liquidations or distressed sales. The following is a description of valuation methodologies used for assets and liabilities recorded at fair value. Investment securities available for sale : Investment securities available for sale are recorded at fair value on a recurring basis. Fair value measurement is based upon quoted prices, if available. If a quoted price is not available, the fair value is obtained from benchmarking the security against similar securities. U.S. Treasury securities are considered Level 1 with the remaining securities considered Level 2. The pricing for investment securities is obtained from an independent source. There are no Level 3 investment securities owned by the Company. The Company obtains an understanding of the independent source’s valuation methodologies used to determine fair value by level of security. The Company validates assigned fair values on a sample basis using an additional third-party provider pricing service to determine if the fair value measurement is reasonable. Due to the nature of our investment portfolio, we do not expect significant and unusual fluctuations as fair value changes primarily relate to interest rate changes. No unusual fluctuations were identified during the year ended December 31, 2021. If a fluctuation requiring investigation was identified, the Company would research the change with the independent source or other available information. Individually analyzed loans under ASC 326 CECL : See Note 1 for further discussion of individually analyzed loans under CECL. A loan is considered to be non-performing when it is probable that all of the principal and interest due may not be collected according to its contractual terms. Generally, when a loan is considered non-performing, the amount of reserve is measured based on the fair value of the underlying collateral. The Company makes such measurements on all material loans deemed non-performing using the fair value of the collateral for collateral dependent loans or based on the present value of the estimated future cash flows of interest and principal discounted at the loans effective interest rate or the fair value of the loan if determinable. The fair value of collateral used by the Company is determined by obtaining an observable market price or by obtaining an appraised value from an independent, licensed or certified appraiser, using observable market data. This data includes information such as selling price of similar properties and capitalization rates of similar properties sold within the market, expected future cash flows or earnings of the subject property based on current market expectations, and other relevant factors. All appraised values are adjusted for market-related trends based on the Company's experience in sales and other appraisals of similar property types as well as estimated selling costs. These loans are considered Level 3 as the instruments used to determine fair market value require significant management judgment and estimation. Foreclosed assets : The Company does not record foreclosed assets at fair value on a recurring basis. Foreclosed assets consist mainly of other real estate owned but may include other types of assets repossessed by the Company. Foreclosed assets are adjusted to the lower of carrying value or fair value less the costs of disposal. Fair value is generally based upon independent market prices or appraised values of the collateral, and may include a marketability discount as deemed necessary by management based on its experience with similar types of real estate. The value of foreclosed assets is evaluated periodically as a nonrecurring fair value adjustment. Foreclosed assets are classified as Level 3. Off-balance sheet instruments : Fair values for outstanding letters of credit are based on fees currently charged to enter into similar agreements, taking into account the remaining terms of the agreements and the counterparties' credit standing. The fair value of the outstanding letters of credit is not significant. Unfunded loan commitments are not valued since the loans are generally priced at market at the time of funding (Level 2). Assets and Liabilities Recorded at Fair Value on a Recurring Basis The table below represents the balances of assets and liabilities measured at fair value on a recurring basis: December 31, 2021 Readily Available Observable Company Total at Securities available for sale (Amounts in Thousands) U.S. Treasury $ 243,925 $ — $ — $ 243,925 State and political subdivisions — 263,516 — 263,516 Mortgage-backed securities and collateralized mortgage obligations — 9,446 — 9,446 Other securities (FHLB, FHLMC and FNMA) — 34,467 — 34,467 Total $ 243,925 $ 307,429 $ — $ 551,354 December 31, 2020 Readily Available Observable Company Total at Securities available for sale (Amounts in Thousands) U.S. Treasury $ 148,646 $ — $ — $ 148,646 State and political subdivisions — 224,566 — 224,566 Other securities (FHLB, FHLMC and FNMA) — 35,160 — 35,160 Total $ 148,646 $ 259,726 $ — $ 408,372 (1) Considered Level 1 under ASC 820. (2) Considered Level 2 under ASC 820. (3) Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market. There were no transfers between Levels 1, 2 or 3 during the years ended December 31, 2021 and 2020. Assets and Liabilities Recorded at Fair Value on a Nonrecurring Basis The Company is required to measure certain assets at fair value on a nonrecurring basis in accordance with GAAP. These adjustments to fair value usually result from application of lower-of-cost-or-market accounting or write-downs of individual assets. The valuation methodologies used to measure these fair value adjustments are described above. For assets measured at fair value on a nonrecurring basis that were still held on the balance sheet at December 31, 2021 and 2020, the following tables provide the level of valuation assumptions used to determine the adjustment and the carrying value of the related individual assets at year end. December 31, 2021 Year Ended December 31, 2021 Readily Observable Company Total at Total (Amounts in Thousands) Loans (4) Agricultural $ — $ — $ 399 $ 399 $ — Commercial and financial — — 1,527 1,527 — Real Estate: Construction, 1 to 4 family residential — — 383 383 — Construction, land development and commercial — — 96 96 — Mortgage, farmland — — 1,114 1,114 — Mortgage, 1 to 4 family first liens — — 5,902 5,902 212 Mortgage, 1 to 4 family junior liens — — 202 202 9 Mortgage, multi-family — — 1,460 1,460 — Mortgage, commercial — — 4,176 4,176 255 Loans to individuals — — — — — Foreclosed assets (5) — — — — — Total $ — $ — $ 15,259 $ 15,259 $ 476 (1) Considered Level 1 under ASC 820. (2) Considered Level 2 under ASC 820. (3) Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market. (4) Represents carrying value and related write-downs of loans for which adjustments are based on the value of the collateral. The carrying value of loans fully charged off is zero. (5) Represents the fair value and related losses of foreclosed real estate and other collateral owned that were measured at fair value subsequent to their initial classification as foreclosed assets. December 31, 2020 Year Ended December 31, 2020 Readily Observable Company Total at Total (Amounts in Thousands) Loans (4) Agricultural $ — $ — $ 1,081 $ 1,081 $ — Commercial and financial — — 1,692 1,692 385 Real Estate: Construction, 1 to 4 family residential — — 414 414 — Construction, land development and commercial — — 315 315 — Mortgage, farmland — — 1,718 1,718 — Mortgage, 1 to 4 family first liens — — 5,906 5,906 252 Mortgage, 1 to 4 family junior liens — — 176 176 19 Mortgage, multi-family — — 1,773 1,773 — Mortgage, commercial — — 5,082 5,082 250 Loans to individuals — — — — — Foreclosed assets (5) — — — — — Total $ — $ — $ 18,157 $ 18,157 $ 906 (1) Considered Level 1 under ASC 820. (2) Considered Level 2 under ASC 820. (3) Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market. (4) Represents carrying value and related write-downs of loans for which adjustments are based on the value of the collateral. The carrying value of loans fully charged off is zero. (5) Represents the fair value and related losses of foreclosed real estate and other collateral owned that were measured at fair value subsequent to their initial classification as foreclosed assets.

Parent Company Only Financial I

Parent Company Only Financial Information	12 Months Ended
	Dec. 31, 2021
Condensed Financial Information Disclosure [Abstract]
Parent Company Only Financial Information	Parent Company Only Financial Information Following is condensed financial information of the Company (parent company only): CONDENSED BALANCE SHEETS December 31, 2021 and 2020 (Amounts In Thousands) ASSETS 2021 2020 Cash and cash equivalents at subsidiary bank $ 2,176 $ 1,100 Investment in subsidiary bank 488,406 464,355 Other assets 2,067 1,846 Total assets $ 492,649 $ 467,301 LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities $ 4,186 $ 3,896 Redeemable common stock held by ESOP 50,013 47,329 Stockholders' equity: Capital stock 60,938 60,233 Retained earnings 474,392 439,831 Accumulated other comprehensive gain 1,477 8,782 Treasury stock at cost (48,344) (45,441) 488,463 463,405 Less maximum cash obligation related to ESOP shares 50,013 47,329 Total stockholders' equity 438,450 416,076 Total liabilities and stockholders' equity $ 492,649 $ 467,301 CONDENSED STATEMENTS OF INCOME Years Ended December 31, 2021, 2020 and 2019 (Amounts In Thousands) 2021 2020 2019 Dividends received from subsidiary $ 12,273 $ 14,822 $ 7,657 Other expenses (836) (362) (708) Income before income tax benefit and equity in undistributed income of subsidiary 11,437 14,460 6,949 Income tax benefit 297 173 271 11,734 14,633 7,220 Equity in undistributed income of subsidiary 36,351 24,014 38,098 Net income $ 48,085 $ 38,647 $ 45,318 CONDENSED STATEMENTS OF CASH FLOWS Years Ended December 31, 2021, 2020 and 2019 (Amounts In Thousands) 2021 2020 2019 Cash flows from operating activities: Net income $ 48,085 $ 38,647 $ 45,318 Adjustments to reconcile net income to cash and cash equivalents provided by operating activities: Equity in undistributed income of subsidiary (36,351) (24,014) (38,098) Share-based compensation 25 25 14 Compensation expensed through issuance of common stock 1,618 1,272 1,133 Forfeiture of common stock (455) (257) (262) Increase in other assets (221) (515) (100) Increase (decrease) in other liabilities 290 (3,554) 1,036 Net cash and cash equivalents provided by operating activities 12,991 11,604 9,041 Cash flows from financing activities: Issuance of common stock, net of costs — 5,844 5,026 Stock options exercised — — 62 Purchase of treasury stock (3,569) (8,550) (5,534) Proceeds from the issuance of common stock through the employee stock purchase plan 427 413 434 Capital contribution to subsidiary — (5,000) — Dividends paid (8,773) (8,325) (7,657) Net cash and cash equivalents used by financing activities (11,915) (15,618) (7,669) Increase (decrease) in cash and cash equivalents 1,076 (4,014) 1,372 Cash and cash equivalents: Beginning of year 1,100 5,114 3,742 Ending of year $ 2,176 $ 1,100 $ 5,114 Supplemental Disclosures Noncash financing activities: Increase (decrease) in maximum cash obligation related to ESOP shares $ 2,684 $ (4,497) $ 2,956

Commitments and Contingencies

Commitments and Contingencies	12 Months Ended
	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Concentrations of credit risk : The Bank’s loans, commitments to extend credit, unused lines of credit and outstanding letters of credit have been granted to customers within the Bank's market area. Investments in securities issued by state and political subdivisions within the state of Iowa totaled approximately $98.92 million. The concentrations of credit by type of loan are set forth in Note 3 to the Consolidated Financial Statements. Outstanding letters of credit were granted primarily to commercial borrowers. Although the Bank has a diversified loan portfolio, a substantial portion of its debtors' ability to honor their contracts is dependent upon the economic conditions in Johnson, Linn and Washington Counties, Iowa. Contingencies : In the normal course of business, the Company and its subsidiaries are subject to pending and threatened legal actions, some of which seek substantial relief or damages. While the ultimate outcome of such legal proceedings cannot be predicted with certainty, after reviewing pending and threatened litigation with counsel, management believes at this time that the outcome of such litigation will not have a material adverse effect on the Company’s business, financial conditions, or results of operations. The outbreak of Coronavirus Disease 2019 (“COVID-19”) continues to adversely impact a broad range of industries in which the Company’s customers operate and impair their ability to fulfill their financial obligations to the Company. The World Health Organization declared COVID-19 to be a global pandemic indicating that almost all public commerce and related business activities must be, to varying degrees, curtailed with the goal of decreasing the rate of new infections. The spread of the outbreak has caused significant disruptions in the U.S. economy and is highly likely to disrupt banking and other financial activity in the areas in which the Company operates and could also potentially create widespread business continuity issues for the Company. The Company’s business is dependent upon the willingness and ability of its employees and customers to conduct banking and other financial transactions. While significant progress has been made to combat the outbreak of COVID-19, and while it appears that the epidemiological and macroeconomic conditions are trending in a positive direction, if there is a resurgence in the virus, the Company could experience further adverse effects on its business, financial condition, results of operations and cash flows. See Note 3 for further discussion regarding the financial impact of COVID-19. Financial instruments with off-balance sheet risk : The Bank is a party to financial instruments with off-balance sheet risk in the normal course of business to meet the financing needs of its customers. These financial instruments include commitments to extend credit, credit card participations and standby letters of credit. These instruments involve, to varying degrees, elements of credit risk in excess of the amount recognized in the consolidated balance sheets. The Bank’s exposure to credit loss in the event of nonperformance by the other party to the financial instrument for commitments to extend credit, credit card participations and standby letters of credit is represented by the contractual amount of those instruments. The Bank uses the same credit policies in making commitments and conditional obligations as it does for on-balance sheet instruments. A summary of the Bank’s commitments at December 31, 2021 and 2020 is as follows: 2021 2020 (Amounts In Thousands) Firm loan commitments and unused portion of lines of credit: Home equity loans $ 78,961 $ 69,974 Credit cards 65,913 60,535 Commercial, real estate and home construction 170,539 118,186 Commercial lines and real estate purchase loans 298,911 234,907 Outstanding letters of credit 7,179 8,056 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. Since many of the commitments are expected to expire without being drawn upon, the total commitment amounts do not necessarily represent future cash requirements. The Bank evaluates each customer's credit worthiness on a case-by-case basis. The amount of collateral obtained, if deemed necessary by the Bank upon extension of credit, is based on management's credit evaluation of the party. Collateral held varies, but may include accounts receivable, crops, livestock, inventory, property and equipment, residential real estate and income-producing commercial properties. Credit card commitments are the unused portion of the holders' credit limits. Such amounts represent the maximum amount of additional unsecured borrowings. Standby letters of credit are conditional commitments issued by the Bank to guarantee the performance of a customer to a third party. Those guarantees are primarily issued to support public and private borrowing arrangements and, generally, have terms of one year or less. The credit risk involved in issuing letters of credit is essentially the same as that involved in extending loans to customers. The Bank holds collateral, which may include accounts receivable, inventory, property, equipment, and income-producing properties, supporting those commitments if deemed necessary. In the event the customer does not perform in accordance with the terms of the agreement with the third party, the Bank would be required to fund the commitment. The maximum potential amount of future payments the Bank could be required to make is represented by the contractual amount shown in the summary above. If the commitment is funded the Bank would be entitled to seek recovery from the customer. At December 31, 2021 and 2020, no amounts have been recorded as liabilities for the Bank’s potential obligations under these guarantees. Lease commitments: The Company leases certain facilities under operating leases. The minimum future rental commitments as of December 31, 2021 for all non-cancellable leases relating to Bank premises were as follows: Year ending December 31: (Amounts In Thousands) 2022 $ 319 2023 316 2024 82 2025 1 2026 1 Thereafter 3 $ 722 Rent expense was $0.40 million, $0.38 million and $0.40 million for the years ended December 31, 2021, 2020 and 2019, respectively.

Quarterly Results of Operations

Quarterly Results of Operations (unaudited, amounts in thousands, except per share amounts)	12 Months Ended
	Dec. 31, 2021
Quarterly Financial Information Disclosure [Abstract]
Quarterly Results of Operations (unaudited, amounts in thousands, except per share amounts)	Quarterly Results of Operations (unaudited, amounts in thousands, except per share amounts) Quarter Ended March June September December Year 2021 Interest income $ 31,127 $ 30,794 $ 31,196 $ 28,972 $ 122,089 Interest expense 4,894 4,598 4,172 3,963 17,627 Net interest income $ 26,233 $ 26,196 $ 27,024 $ 25,009 $ 104,462 Credit loss (benefit) expense (2,984) (1,659) 82 (946) (5,507) Other income 9,038 7,982 8,244 8,200 33,464 Other expense 18,699 18,219 18,198 26,225 81,341 Income before income taxes $ 19,556 $ 17,618 $ 16,988 $ 7,930 $ 62,092 Income taxes 4,359 4,008 3,863 1,777 14,007 Net income $ 15,197 $ 13,610 $ 13,125 $ 6,153 $ 48,085 Basic earnings per share $ 1.63 $ 1.46 $ 1.41 $ 0.66 $ 5.16 Diluted earnings per share 1.63 1.46 1.41 0.66 5.16 2020 Interest income $ 32,452 $ 32,246 $ 31,675 $ 32,156 $ 128,529 Interest expense 7,862 6,645 6,465 5,980 26,952 Net interest income $ 24,590 $ 25,601 $ 25,210 $ 26,176 $ 101,577 Provision for loan losses 4,649 8 (157) (142) 4,358 Other income 6,167 6,531 7,510 8,128 28,336 Other expense 17,227 16,872 18,055 23,477 75,631 Income before income taxes $ 8,881 $ 15,252 $ 14,822 $ 10,969 $ 49,924 Income taxes 1,806 3,541 3,392 2,538 11,277 Net income $ 7,075 $ 11,711 $ 11,430 $ 8,431 $ 38,647 Basic earnings per share $ 0.75 $ 1.25 $ 1.22 $ 0.90 $ 4.12 Diluted earnings per share 0.75 1.25 1.22 0.90 4.12

Derivative Financial Instrument

Derivative Financial Instruments	12 Months Ended
	Dec. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Derivative Financial Instruments In the normal course of business, the Bank may use derivative financial instruments to manage its interest rate risk. These instruments carry varying degrees of credit, interest rate and market or liquidity risks. Derivative instruments are recognized as either assets or liabilities in the accompanying consolidated financial statements and are measured at fair value. The Bank’s objectives are to add stability to its net interest margin and to manage its exposure to movements in interest rates. The contract or notional amount of a derivative is used to determine, along with the other terms of the derivative, the amount to be exchanged between the counterparties. The Bank is exposed to credit risk in the event of nonperformance by counterparties to financial instruments. The Bank minimizes this risk by entering into derivative contracts with large, stable financial institutions. The Bank has not experienced any losses from nonperformance by counterparties. The Bank monitors counterparty risk in accordance with the provisions of ASC 815. In addition, the Bank’s interest rate-related derivative instruments contain language outlining collateral pledging requirements for each counterparty. Collateral must be posted when the market value exceeds certain threshold limits which are determined by credit ratings of each counterparty. The Bank terminated one interest rate swap in December 2020 and the other matured in November 2020, therefore the Bank was not required to pledge collateral as of December 31, 2021 and 2020. Cash Flow Hedges: The Bank executed two forward-starting interest rate swap transactions on November 7, 2013. One of the interest rate swap transactions had an effective date of November 9, 2015, and an expiration date of November 9, 2020, effectively converting $25.00 million of variable rate debt to fixed rate debt. The other interest rate swap transaction had an effective date of November 7, 2016 and an expiration date of November 7, 2023, effectively converting $25.00 million of variable rate debt to fixed rate debt. For accounting purposes, these swap transactions were designated as a cash flow hedge of the changes in cash flows attributable to changes in three-month LIBOR, the benchmark interest rate being hedged, associated with the interest payments made on an amount of the Bank’s debt principal equal to the then-outstanding swap notional amount. At inception, the Bank asserted that the underlying principal balance would remain outstanding throughout the hedge transaction making it probable that sufficient LIBOR-based interest payments would exist through the maturity date of the swaps. The Bank terminated the remaining interest rate swap in December 2020 and in connection with the termination paid $2.684 million to the counterparty. The losses realized on the interest rate swap were reclassified into the income statement from other comprehensive income. In connection with the termination of the swap, the related FHLB borrowings were paid off. There were no remaining derivative instruments designated as cash flow hedges as of December 31, 2021 and 2020. There were no gains or losses recognized on the Bank's derivative instruments designated as cash flow hedges for the year ended December 31, 2021. The table below identifies the gains and losses recognized on the Bank’s derivative instruments designated as cash flow hedges for the year ended December 31, 2020: Recognized in OCI Reclassified from AOCI into Income Recognized in Income on Derivatives Amount of Gain (Loss) Category Amount of Gain (Loss) Category Amount of Gain (Loss) (Amounts in Thousands) December 31, 2020 Interest rate swap $ 209 Interest Expense $ — Other Income $ — Interest rate swap (438) Interest Expense (1,992) Other Income —

Subsequent Events

Subsequent Events	12 Months Ended
	Dec. 31, 2021
Subsequent Events [Abstract]
Subsequent Events	Subsequent EventsSubsequent events have been evaluated through March 4, 2022.

Nature of Activities and Sign_2

Nature of Activities and Significant Accounting Policies (Policies)	12 Months Ended
	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Nature of activities	Nature of activities : Hills Bancorporation (the "Company") is a holding company engaged in the business of commercial banking. The Company's subsidiary is Hills Bank and Trust Company, Hills, Iowa (the “Bank”), which is wholly-owned. The Bank is a full-service commercial bank extending its services to individuals, businesses, governmental units and institutional customers primarily in the communities of Hills, Iowa City, Coralville, North Liberty, Lisbon, Mount Vernon, Kalona, Wellman, Cedar Rapids, Marion and Washington, Iowa. The Bank competes with other financial institutions and non-financial institutions providing similar financial products. Although the loan activity of the Bank is diversified with commercial and agricultural loans, real estate loans, automobile, installment and other consumer loans, the Bank's credit is concentrated in real estate loans. All of the Company’s operations are considered to be one reportable operating segment.
Accounting estimates	Accounting estimates : The preparation of consolidated financial statements in conformity with accounting principles generally accepted in the United States of America requires management to make estimates and assumptions that affect the reported amount of assets and liabilities and disclosure of contingent assets and liabilities at the date of the consolidated financial statements and the reported amounts of revenues and expenses during the reporting period. Actual results could differ from those estimates.
Certain significant estimates	Certain significant estimates : The allowance for credit losses, fair values of securities and other financial instruments, and share-based compensation expense involve certain significant estimates made by management. These estimates are reviewed by management routinely and it is reasonably possible that circumstances that exist at December 31, 2021 may change in the near-term and the effect could be material to the consolidated financial statements.
Principles of consolidation	Principles of consolidation : The consolidated financial statements include the accounts of the Company and its subsidiary. All significant intercompany balances and transactions have been eliminated in consolidation.
Reclassification of prior year presentation	Reclassification of prior year presentation: Certain prior year amounts have been reclassified for consistency with the current year presentation. These reclassifications had no effect on the reported results of operations.
Revenue recognition	Revenue recognition : Accounting Standards Codification ("ASC") 606, Revenue from Contracts with Customers ("ASC 606"), establishes principles for reporting information about the nature, amount, timing and uncertainty of revenue and cash flows arising from the Company’s contracts to provide goods or services to customers. The core principle requires an entity to recognize revenue to depict the transfer of goods or services to customers in an amount that reflects the consideration that it expects to be entitled to receive in exchange for those goods or services recognized as performance obligations are satisfied. The majority of the Company’s revenue-generating transactions are not subject to ASC 606, including revenue generated from financial instruments, such as loans, letters of credit and investment securities as these activities are not subject to the requirements of ASC 606. Interest income on loans and investment securities is recognized on the accrual method in accordance with written contracts. Loan origination fees of mortgage loans originated for sale are recognized when the loans are sold. Descriptions of the Company’s revenue-generating activities that are within the scope of ASC 606 are the following: Service charges and fees on deposit accounts represent general service fees for monthly account maintenance and activity- or transaction-based fees and consist of transaction-based revenue which includes interchange income, time-based revenue (service period), item-based revenue or some other individual attribute-based revenue. Revenue is recognized when the Company’s performance obligation is completed which is generally monthly for account maintenance services or when a transaction has been completed (such as a wire transfer). Payment for such performance obligations are generally received at the time the performance obligations are satisfied. Trust income represents monthly fees due from wealth management customers as consideration for managing the customers' assets. Wealth management and trust services include custody of assets, investment management, fees for trust services and similar fiduciary activities. Revenue is recognized when our performance obligation is completed each month, which is generally the time that payment is received. 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
Cash and cash equivalents	Cash and cash equivalents : The Company considers all investments with original maturities of three months or less to be cash equivalents. At December 31, 2021 and 2020, cash equivalents consisted primarily of deposits with other banks.
Investment securities	Investment securities : Available-for-sale ("AFS") securities consist of debt securities not classified as trading or held to maturity. Available-for-sale securities are stated at fair value, and unrealized holding gains and losses, net of the related deferred tax effect, are reported as a separate component of stockholders' equity. There were no trading or held to maturity securities as of December 31, 2021 or 2020. Fair value measurement is based upon quoted market prices in active markets, if available. If quoted prices in active markets are not available, fair value is measured using pricing models or other model-based valuation techniques such as present value of future cash flows, which consider prepayment assumptions and other factors such as credit losses and market liquidity. Unrealized gains and losses are excluded from earnings and reported, net of tax, in other comprehensive income ("OCI"). Premiums on debt securities are amortized to the earliest call date and discounts on debt securities are accreted over the period to maturity of those securities. The method of amortization results in a constant effective yield on those securities (the interest method). Gains and losses on the sale of securities are recorded on the trade date and are determined using the specific identification method. AFS debt securities in unrealized loss positions are evaluated for impairment related to credit losses at least quarterly. For AFS debt securities, a decline in fair value due to credit loss results in recording an allowance for credit losses to the extent the fair value is less than the amortized cost basis. Declines in fair value that have not been recorded through an allowance for credit losses, such as declines due to changes in market interest rates, are recorded through other comprehensive income, net of applicable taxes. Impairment may result from credit deterioration of the issuer or collateral underlying the security. In performing an assessment of whether any decline in fair value is due to a credit loss, all relevant information is considered at the individual security level. For asset-backed securities performance indicators considered related to the underlying assets include default rates, delinquency rates, percentage of nonperforming assets, debt-to-collateral ratios, third-party guarantees, current levels of subordination, vintage, geographic concentration, analyst reports and forecasts, credit ratings and other market data. In assessing whether a credit loss exists, we compare the present value of cash flows expected to be collected from the security with the amortized cost basis of the security. If the present value of cash flows expected to be collected is less than the amortized cost basis for the security, a credit loss exists and an allowance for credit losses is recorded, limited to the amount the fair value is less than amortized cost basis. If we intend to sell a debt security or more likely than not we will be required to sell the security before recovery of its amortized cost basis, the debt security is written down to its fair value and the write down is charged against the allowance for credit losses with any incremental impairment reported in earnings. Accrued interest receivable on AFS debt securities totaled $2.05 million at December 31, 2021 and is excluded from the estimate of credit losses. Stock of the Federal Home Loan Bank is carried at cost. The Company has evaluated the stock and determined there is no impairment.
Loans	Loans held for sale : Loans held for sale are stated at the lower of aggregate cost or estimated fair value. Loans are sold on a non-recourse basis with servicing released and gains and losses are recognized based on the difference between sales proceeds and the carrying value of the loan. The Company has had very few experiences of repurchasing loans previously sold into the secondary market. A specific reserve was not considered necessary based on the Company’s historical experience with repurchase activity. Loans held for investment : Loans are stated at the amount of unpaid principal, net of deferred loan fees, and reduced by the allowance for credit losses ("ACL"). Accrued interest receivable on loans held for investment totaled $9.29 million at December 31, 2021 and is excluded from the estimate of credit losses. Interest income is accrued on the unpaid principal balance. Nonrefundable loan fees and origination costs are deferred and recognized as a yield adjustment over the life of the related loan. The accrual of interest income on loans is discontinued when, in the opinion of management, there is reasonable doubt as to the borrower's ability to meet payments of interest or principal when they become due, which is generally when a loan is 90 days or more past due. When a loan is placed on nonaccrual status, all previously accrued and unpaid interest is reversed. Loans are returned to an accrual status when all of the principal and interest amounts contractually due are brought current and repayment of the remaining contractual principal and interest is expected. A loan may also return to accrual status if additional collateral is received from the borrower and, in the opinion of management, the financial position of the borrower indicates that there is no longer any reasonable doubt as to the collection of the amount contractually due. Payment received on nonaccrual loans are applied first to principal. Once principal is recovered, any remaining payments received are applied to interest income. As of December 31, 2021, none of the Company’s nonaccrual loans were earning interest on a cash basis. The policy for charging off loans is consistent throughout all loan categories. A loan is charged off based on criteria that includes but is not limited to: delinquency status, financial condition of the entire customer credit line and underlying collateral coverage, economic or external conditions that might impact full repayment of the loan, legal issues, overdrafts, and the customer’s willingness to work with the Company. Allowance for credit losses for loans held for investment : The allowance for credit losses is an estimate of expected losses inherent within the Company's existing loans held for investment portfolio. The allowance for credit losses for loans held for investment, as reported in our consolidated balance sheet, is adjusted by a credit loss expense, which is reported in earnings, and reduced by the charge-off of loan amounts, net of recoveries. The loan loss estimation process involves procedures to appropriately consider the unique characteristics of loan portfolio segments which consist of agricultural, 1 to 4 family first and junior liens, commercial, and consumer lending. These segments are further disaggregated into loan classes, the level at which credit risk is monitored. For each of these pools, the Company generates cash flow projections at the instrument level wherein payment expectations are adjusted for estimated prepayment speed, curtailments, time to recovery, probability of default, and loss given default. The modeling of expected prepayment speeds, curtailment rates, and time to recovery are based on historical internal data. The following provides the credit quality indicators and risk elements that are most relevant and most carefully considered and monitored for each loan portfolio segment. Agricultural - Agricultural operating loans include loans made to finance agricultural production and other loans to farmers and farming operations. Agricultural loans also include mortgage loans secured by farmland. Agricultural operating loans, most of which are secured by crops and machinery, are provided to finance capital improvement and farm operations as well as acquisitions of livestock and machinery. The ability of the borrower to repay may be affected by many factors outside of the borrower’s control including adverse weather conditions, loss of livestock due to disease or other factors, declines in market prices for agricultural products and the impact of government regulations. The ultimate repayment of agricultural operating loans is dependent upon the profitable operation or management of the agricultural entity. Agricultural operating loans generally have a term of one year and may have a fixed or variable rate. Mortgage loans secured by farmland are made to individuals and businesses within the Company's trade area. The primary source of repayment is the cash flow generated by the collateral underlying the loan. The secondary repayment source would be the liquidation of the collateral. Terms for real estate loans secured by farmland range from one to ten years with an amortization period of 25 years or less. Generally, interest rates are fixed for mortgage loans secured by farmland. Key economic forecasts used in estimating expected credit losses for this segment include the Iowa unemployment rate and the Iowa real gross domestic product (GDP). 1 to 4 Family First and Junior Liens - The 1 to 4 family first and junior liens portfolio segment is comprised of the single family and home equity loan classes, which are underwritten after evaluating a borrower's capacity to repay, credit, and collateral. Several factors are considered when assessing a borrower's capacity, including the borrower's employment, income, current debt, assets, and level of equity in the property. Credit refers to how well a borrower manages their current and prior debts as documented by a credit report that provides credit scores and the borrower's current and past information about their credit history. Collateral refers to the type and use of property, occupancy, and market value. Property appraisals are obtained to assist in evaluating collateral. Loan-to-property value and debt-to-income ratios, loan amount, and lien position are also considered in assessing whether to originate a loan. These borrowers are particularly susceptible to downturns in economic trends such as conditions that negatively affect housing prices and demand and levels of unemployment. Key economic forecasts used in estimating expected credit losses for this segment include the Iowa unemployment rate and the all-transactions house price index for Iowa. Commercial - The commercial loan portfolio segment is comprised of the commercial real estate mortgage, multifamily residential mortgage, construction/land development and commercial and financial loan classes, whose underwriting standards consider the factors described for single family and home equity loan classes as well as others when assessing the borrower's and associated guarantors or other related party's financial position. These other factors include assessing liquidity, the level and composition of net worth, leverage, considering all other lender amounts and position, an analysis of cash expected to flow through the obligors including the outflow to other lenders, vacancies and prior experience with the borrower. This information is used to assess adequate financial capacity, profitability, and experience. Ultimate repayment of these loans is sensitive to interest rate changes, general economic conditions, liquidity, and availability of long-term financing. Key economic forecasts used in estimating expected credit losses for this segment include the Iowa unemployment rate, the all-transactions house price index for Iowa and the Iowa real GDP. Consumer Lending - The Bank offers consumer loans to individuals including personal loans and automobile loans. These consumer loans typically have shorter terms, lower balances, higher yields and higher risks of default than real estate-related loans. Consumer loans collections are dependent on the borrower's continuing financial stability and are more likely to be affected by adverse personal circumstances. Collateral for these loans generally includes automobiles, boats, recreational vehicles and real estate. However, depending on the overall financial condition of the borrower, some loans are made on an unsecured basis. The collateral securing these loans may depreciate over time, may be difficult to recover and may fluctuate in value based on condition. Key economic forecasts used in estimating expected credit losses for this segment include the Iowa unemployment rate and the Iowa real GDP. The allowance level is influenced by loan volumes, loan credit quality indicator migration or delinquency status, historic loss experience and other conditions influencing loss expectations, such as reasonable and supportable forecasts of economic conditions. The methodology for estimating the amount of expected credit losses reported in the allowance for credit losses has two basic components: first, a pooled component for estimated expected credit losses for pools of loans that share similar risk characteristics; and second, an asset-specific component involving individual loans that do not share risk characteristics with other loans and the measurement of expected credit losses for such individual loans. Depending on the nature of the pool of financial assets with similar risk characteristics, the Company uses a discounted cash flow method or remaining life method to estimate expected credit losses. Discounted cash flow method : In estimating the component of the allowance for credit losses for loans that share similar risk characteristics with other loans, such loans are segregated into loan classes. Loans are designated into loan classes based on loans pooled by product types and similar risk characteristics or areas of risk concentration. In determining the allowance for credit losses, we derive an estimated credit loss assumption from a model that categorizes loan pools based on loan type and purpose. This model calculates an expected loss percentage for each loan class by considering the probability of default, using life-of-loan analysis periods for all loan segments, and the historical severity of loss, based on the aggregate net lifetime losses incurred per loan class. The default and severity factors used to calculate the allowance for credit losses for loans that share similar risk characteristics with other loans are adjusted for differences between the historical period used to calculate historical default and loss severity rates and expected conditions over the remaining lives of the loans in the portfolio related to: (1) lending policies and procedures; (2) international, national, regional and local economic business conditions and developments that affect the collectability of the portfolio; (3) the nature and volume of the loan portfolio including the terms of the loans; (4) the experience, ability, and depth of the lending management and other relevant staff; (5) the volume and severity of past due and adversely classified or graded loans and the volume of nonaccrual loans; (6) the quality of our loan review system and (7) the value of underlying collateral for collateralized loans. Additional factors include the existence and effect of any concentrations of credit, and changes in the level of such concentrations and the effect of external factors such as competition and legal and regulatory requirements on the level of estimated credit losses in the existing portfolio. Such factors are used to adjust the historical probabilities of default and severity of loss so that they reflect management expectation of future conditions based on a reasonable and supportable forecast. The Company uses regression analysis of historical internal and peer data to determine which variables are best suited to be economic variables utilized when modeling lifetime probability of default and loss given default. This analysis also determines how expected probability of default and loss given default will react to forecasted levels of the economic variables. For all DCF models, management has determined that four quarters represents a reasonable and supportable forecast period and reverts back to a historical loss rate over twelve quarters on a straight-line basis. Other internal and external indicators of economic forecasts are also considered by management when developing the forecast metrics. Remaining life method: Expected credit losses for credit cards and overdrafts are determined through use of the remaining life method. The remaining life method utilizes average annual charge-off rates and remaining life to estimate the allowance for credit losses. This is done by estimating the amount and timing of principal payments expected to be received as payment for the balance outstanding as of the reporting period and applying those principal payments against the balance outstanding as of the reporting period along with the average annual charge-off rate until the expected payments have been fully allocated. Collateral dependent financial assets : For a loan that does not share risk characteristics with other loans, expected credit loss is measured based on net realizable value, that is, the difference between the discounted value of the expected future cash flows, based on the original effective interest rate, and the amortized cost basis of the loan. For these loans, we recognize expected credit loss equal to the amount by which the net realizable value of the loan is less than the amortized cost basis of the loan (which is net of previous charge- offs and deferred loan fees and costs), except when the loan is collateral dependent, that is, when the borrower is experiencing financial difficulty and repayment is expected to be provided substantially through the operation or sale of the collateral. In these cases, expected credit loss is measured as the difference between the amortized cost basis of the loan and the fair value of the collateral. The fair value of the collateral is adjusted for the estimated cost to sell if repayment or satisfaction of a loan is dependent on the sale (rather than only on the operation) of the collateral. The Company’s estimate of the ACL reflects losses expected over the contractual life of the assets, adjusted for estimated prepayments or curtailments. The contractual term does not consider extensions, renewals or modifications unless the Company has identified an expected troubled debt restructure (TDR). A loan that has been modified or renewed is considered a TDR when two conditions are met: 1) the borrower is experiencing financial difficulty and 2) concessions are made for the borrower's benefit that would not otherwise be considered for a borrower or transaction with similar credit risk characteristics. The Company’s ACL reflects all effects of a TDR when an individual asset is specifically identified as a reasonably expected TDR. The Company has determined that a TDR is reasonably expected no later than the point when the lender concludes that modification is the best course of action and it is at least reasonably possible that the troubled borrower will accept some form of concession from the lender to avoid a default. Reasonably expected TDRs and executed non-performing TDRs are evaluated individually to determine the required ACL. TDRs performing in accordance with their modified contractual terms for a reasonable period of time may be included in the Company’s existing pools based on the underlying risk characteristics of the loan to measure the ACL. Allowance for credit losses on off-balance sheet credit exposures, including unfunded loan commitments : The Company maintains a separate allowance for credit losses from off-balance-sheet credit exposures, including unfunded loan commitments, which is disclosed on the balance sheet. Management estimates the amount of expected losses by calculating a commitment usage factor over the contractual period for exposures that are not unconditionally cancellable by the Company and applying the loss factors used in the ACL methodology to the results of the usage calculation to estimate the liability for credit losses related to unfunded commitments for each loan type. No credit loss estimate is reported for off-balance-sheet (OBS) credit exposures that are unconditionally cancellable by the Company, such as credit card receivables, or for undrawn amounts under such arrangements that may be drawn prior to the cancellation of the arrangement. The allowance for credit losses on OBS credit exposures is adjusted as credit loss expense. Categories of OBS credit exposures correspond to the loan portfolio segments described previously.
Troubled debt restructurings (TDR loans)	Troubled debt restructurings (“TDR loans”) : A loan is accounted for and reported as a troubled debt restructuring ("TDR") when, for economic or legal reasons, we grant a concession to a borrower experiencing financial difficulty that we would not otherwise consider. These concessions may include rate reductions, principal forgiveness, extension of maturity date and other actions intended to minimize potential losses to the Company. A restructuring that results in only an insignificant delay in payment is not considered a concession. A delay may be considered insignificant if the payments subject to the delay are insignificant relative to the unpaid principal or collateral value and the contractual amount due, or the delay in timing of the restructured payment period is insignificant relative to the frequency of payments, the debt's original contractual maturity or original expected duration. TDRs that are performing and on accrual status as of the date of the modification remain on accrual status. TDRs that are nonperforming as of the date of modification generally remain as nonaccrual until the prospect of future payments in accordance with the modified loan agreement is reasonably assured, generally demonstrated when the borrower maintains compliance with the restructured terms for a predetermined period, normally at least six months. TDRs with temporary below-market concessions remain designated as a TDR regardless of the accrual or performance status until the loan is paid off. However, if the TDR loan has been modified in a subsequent restructure with market terms and the borrower is not currently experiencing financial difficulty, then the loan is no longer classified as a TDR in the quarter following the modification. Management evaluates loans where there is a reasonable expectation at the reporting date that a troubled debt restructuring will be executed with an individual borrower for purposes of estimating the allowance for credit losses. Section 4013 of the CARES Act, “Temporary Relief From Troubled Debt Restructurings,” allows financial institutions the option to temporarily suspend certain requirements under GAAP related to TDRs for a limited period of time during the COVID-19 pandemic. Under Section 4013 of the CARES Act, loan modifications that qualify for such suspension are those where the borrower was not more than 30 days past due as of December 31, 2019. In addition, the loan modification being made in response to the COVID-19 pandemic must include a deferral or delay in the payment of principal or interest, or change in the interest rate on the loan. In March 2020, various regulatory agencies, including the FRB and the FDIC, issued an interagency statement, effective immediately, on loan modifications and reporting for financial institutions working with customers affected by COVID-19. The agencies confirmed with the staff of the FASB that short-term modifications made on a good faith basis in response to COVID-19 to borrowers who were current prior to any relief are not to be considered TDRs. This includes short-term (e.g., six months) modifications, such as payment deferrals, fee waivers, extensions of repayment terms, or other 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. The relief related to TDRs expired on January 1, 2022. See Note 3 for further discussion.
Transfers of financial assets	Transfers of financial assets : Transfers of financial assets are accounted for as sales, when control over the assets has been surrendered. Control over transferred assets is deemed to be surrendered when (1) the assets have been isolated from the Company, (2) the transferee obtains the right (free of conditions that constrain it from taking advantage of that right) to pledge or exchange the transferred assets and (3) the Company does not maintain effective control over the transferred assets through an agreement to repurchase them before their maturity or the ability to unilaterally cause the holder to return specific assets.
Credit related financial instruments	Credit related financial instruments : In the ordinary course of business, the Company has entered into commitments to extend credit, including commitments under credit card arrangements, commercial letters of credit and standby letters of credit. Such financial instruments are recorded when they are funded.
Tax credit real estate	Tax credit real estate : Tax credit real estate represents three multi-family rental properties, three assisted living rental properties, a multi-tenant rental property for persons with disabilities, and a multi-family senior living rental property, all which are affordable housing projects as of December 31, 2021. The Bank has a 99% or greater limited partnership interest in each limited partnership. The investment in each was completed after the projects had been developed by the general partner. The Company evaluates the recoverability of the carrying value on a regular basis. If the recoverability was determined to be in doubt, a valuation allowance would be established by way of a charge to expense. Depreciation expense is provided on a straight-line basis over the estimated useful life of the assets. Expenditures for normal repairs and maintenance are charged to expense as incurred. The investments in tax credit real estate are recorded for all years presented using the equity method of accounting, with the exception of the investment in the affordable housing project described below. The operations of the properties are not expected to contribute significantly to the Company’s income before income taxes. However, the properties do contribute in the form of income tax credits, which lowers the Company’s effective tax rate. Once established, the credits on each property last for ten years and are passed through from the limited partnerships to the Bank and reduces the consolidated federal tax liability of the Company. In February 2021, the Company provided construction financing and contributed capital of $4.18 million to Del Ray Ridge LP, as limited partner, which owns and operates an affordable housing property in Iowa City, Iowa. The Company accounts for the investment in this tax credit real estate using the proportional amortization method as provided for under Accounting Standards Codification (ASC) 323-740. The investment qualifies for the proportional amortization method as it meets all of the criteria under ASC 323-740-25-1. Substantially all of the projected benefits are from tax credits and other tax benefits due to the minimum buyout clause included in the partnership agreement. On a regular basis, the Company evaluates recoverability of the carrying value of the tax credit real estate investments to determine if an allowance for credit losses is necessary. The allowance for credit losses is measured by a comparison of the carrying amount of the investments to the future undiscounted cash flows expected to be generated by the investment properties, including the low-income housing tax credits and any estimated proceeds from eventual disposition. If there is an indication of impairment, the allowance for credit losses would be established with a charge to credit loss expense. There were no indications of impairment based on management's evaluation and therefore no allowance for credit losses was determined necessary as of December 31, 2021.
Property and equipment	Property and equipment : Property and equipment is stated at cost less accumulated depreciation. Depreciation is computed using primarily declining-balance methods over the estimated useful lives of 7-40 years for buildings and improvements and 3-10 years for furniture and equipment.
Deferred income taxes	Deferred income taxes : Deferred income taxes are provided under the asset and liability method whereby deferred tax assets are recognized for deductible temporary differences and net operating loss, and tax credit carryforwards and deferred tax liabilities are recognized for taxable temporary differences. Temporary differences are the differences between the reported amounts of assets and liabilities and their tax bases. Deferred tax assets are reduced by a valuation allowance when, in the opinion of management, it is more likely than not that some or all of the deferred tax assets will not be realized. Deferred tax assets and liabilities are adjusted for the effects of changes in tax laws and rates on the date of enactment. The Company recognizes the effect of income tax positions only if those positions are more likely than not of being sustained. Recognized income tax positions are measured at the largest amount that is greater than 50% likely of being realized. Changes in recognition or measurement are reflected in the period in which the change in judgment occurs. Interest and penalties on unrecognized tax benefits are classified as other noninterest expense. As of December 31, 2021, the Company had no material unrecognized tax benefits.
Goodwill	Goodwill : Goodwill represents the excess of cost over the fair value of the net assets acquired, and is not subject to amortization, but requires, at a minimum, annual impairment tests for intangibles that are determined to have an indefinite life.
Other real estate	Other real estate:   Other real estate represents property acquired through foreclosures and settlements of loans.  Property acquired is carried at the lower of the principal amount of the loan outstanding at the time of acquisition, plus any acquisition costs, or the estimated fair value of the property, less disposal costs.  The Bank will obtain updated appraisals to determine the estimated fair value of the property based on the type of collateral securing the loan and the date of the latest appraisal.  Subsequent write downs estimated on the basis of later valuations are charged to net loss on sale of other real estate owned and other repossessed assets.  Net operating expenses incurred in maintaining such properties are charged to other non-interest expense. Net capital expenditures incurred are capitalized to the property.
Derivative financial instruments	Derivative financial instruments : The Bank uses interest rate swaps as part of its interest rate risk management. Financial Accounting Standards Board (FASB) Accounting Standards Codification (ASC) Topic 815 establishes accounting and reporting standards for derivative instruments and hedging activities. The Bank records all interest rate swaps on the balance sheet at fair value. Derivatives used to hedge the exposure to variability in expected future cash flows are considered cash flow hedges. To qualify for hedge accounting, the Bank must comply with the detailed rules and documentation requirements at the inception of the hedge, and hedge effectiveness is assessed at inception and periodically throughout the life of the hedging relationship. As of December 31, 2021 and 2020, the Bank did not have any outstanding interest rate swaps. For derivatives designated as cash flow hedges, the changes in the fair value of the derivatives is initially reported in other comprehensive income and subsequently reclassified to interest income or expense when the hedged transaction affects earnings. The Bank assesses the effectiveness of each hedging relationship by comparing the cumulative changes in cash flows of the derivative hedging instruments with the cumulative changes in cash flows of the designated hedged item or transaction. No component of the change in the fair value of the hedging instrument is excluded from the assessment of hedge effectiveness. The Bank does not use derivatives for trading or speculative purposes.
Earnings per share	Earnings per share:   Basic earnings per share is computed using the weighted average number of actual common shares outstanding during the period.  Diluted earnings per share reflects the potential dilution that would occur from the exercise of common stock options outstanding.  ESOP shares are considered outstanding for this calculation unless unearned.
Stock awards and options	Stock awards and options : Compensation expense for stock issued through the stock award plan is accounted for using the fair value method prescribed by FASB ASC 718, “Share-Based Payment” (“ASC 718”). Under this method, compensation expense is measured and recognized for all stock-based awards made to employees and directors based on the fair value of each award as of the date of the grant.
Common stock held by ESOP	Common stock held by ESOP : The Company's maximum cash obligation related to these shares is classified outside stockholders' equity because the shares are not readily traded and could be put to the Company for cash.
Treasury stock	Treasury stock : Treasury stock is accounted for by the cost method, whereby shares of common stock reacquired are recorded at their purchase price.
Trust department assets	Trust department assets : Property held for customers in fiduciary or agency capacities is not included in the accompanying consolidated balance sheets, as such items are not assets of the Company.
Effect of New Financial Accounting Standards	Effect of New Financial Accounting Standards Accounting guidance adopted in 2021 On January 1, 2021, the Company adopted Accounting Standards Update (ASU) 2016-13 Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments , which requires the recognition of the allowance for credit losses be estimated using the current expected credit loss (CECL) methodology. The measurement of expected credit losses under the CECL methodology is applicable to financial assets measured at amortized cost, including loan receivables and held-to-maturity debt securities. It also applies to off-balance sheet (OBS) credit exposures not accounted for as insurance (loan commitments, standby letters of credit, financial guarantees, and other similar instruments) and net investments in leases recognized by a lessor in accordance with Topic 842 on leases. In addition, ASC 326 made changes to the accounting for available-for-sale debt securities. One such change is to require credit losses to be presented as an allowance rather than as a write-down on available-for-sale debt securities management does not intend to sell or believes that it is more likely than not they will be required to sell. The Company adopted ASC 326 using the modified retrospective method for all financial assets measured at amortized cost and OBS credit exposures. Results for reporting periods beginning January 1, 2021 are presented under ASC 326 while prior period amounts continue to be reported in accordance with previously applicable GAAP. The Company recorded a net decrease to retained earnings of $4.75 million as of January 1, 2021 for the cumulative effect of adopting ASC 326, which includes deferred taxes of $1.58 million. The transition adjustment includes a $2.75 million increase to the Allowance for Credit Losses and the recording of a $3.58 million Allowance for Credit Losses on OBS Credit Exposures. The following table illustrates the impact of ASC 326 (amounts in thousands). January 1, 2021 As Reported Under ASC 326 Pre-ASC 326 Adoption Impact of ASC 326 Adoption Assets: Loans Allowance for credit losses on loans $ 39,816 $ 37,070 $ 2,746 Liabilities: Allowance for credit losses on off-balance sheet credit exposures $ 3,584 $ — $ 3,584 In December 2019, the FASB issued ASU No. 2019-12, Income Taxes (Topic 740), Simplifying the Accounting for Income Taxes. The amendments in this ASU simplify the accounting for income taxes by removing specific exceptions included in Topic 740, introducing other simplifications and making technical corrections. For public business entities, the amendments in this ASU are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020. Early adoption is permitted. The adoption of ASU 2019-12 by the Company on January 1, 2021 did not have a material impact on the financial statements. In October 2020, the FASB issued ASU 2020-08, Codification Improvements to Subtopic 310-20, Receivables - Nonrefundable Fees and Other Costs . The amendments in this Update clarify that an entity should reevaluate whether a callable debt security is within the scope of paragraph 310-20-35-33 for each reporting period. For each reporting period, to the extent that the amortized cost basis of an individual callable debt security exceeds the amount repayable by the issuer at the next call date, the excess (that is, the premium) shall be amortized to the next call date, unless the guidance in paragraph 310-20-35-26 is applied to consider estimated prepayments. For public business entities, the amendments in this Update are effective for fiscal years, and interim periods within those fiscal years, beginning after December 15, 2020. Early application is not permitted. The adoption of the ASU by the Company on January 1, 2021 did not have a material impact on the financial statements. In October 2020, the FASB issued ASU 2020-10, Codification Improvements, which consists of two sections. The first applicable section contains amendments that improve the consistency of the Codification by including all disclosure guidance in the appropriate disclosure section and provide the option to give certain information either on the face of the financial statements or in the notes to the financial statements. The second section contains Codification improvements that vary in nature. The amendments in this Update do not change GAAP and, therefore, are not expected to result in a significant change in practice. For public business entities, these amendments are effective for annual periods beginning after December 15, 2020. The adoption of the ASU by the Company on January 1, 2021 did not have a material impact on the financial statements. Accounting guidance pending adoption as of December 31, 2021 In May 2021, the FASB issued ASU 2021-04, Earnings Per Share (Topic 260), Debt-Modifications and Extinguishments (Subtopic 470-50), Compensation-Stock Compensation (Topic 718), and Derivatives and Hedging-Contracts in Entity's Own Equity (Subtopic 815-40), Issuer's Accounting for Certain Modifications or Exchanges of Freestanding Equity-Classified Written Call Options . The amendments in this ASU affect entities that issue freestanding written call options that are classified in equity. Specifically, the amendments affect those entities when a freestanding equity-classified written call option is modified or exchanged and remains equity classified after the modification or exchange. An entity should recognize the effect of a modification or an exchange of a freestanding equity-classified written call option to compensate for goods or services in accordance with the guidance in Topic 718, Compensation-Stock Compensation. The amendments in this ASU are effective for all entities for fiscal years beginning after December 15, 2021, including interim periods within those fiscal years. An entity should apply the amendments prospectively to modifications or exchanges occurring on or after the effective date of the amendments. The adoption of the ASU by the Company on January 1, 2022 is not expected to have a material impact on the financial statements. In October 2021, the FASB issued ASU 2021-08, Business Combinations (Topic 815) Accounting for Contract Assets and Contract Liabilities from Contracts with Customers

Nature of Activities and Sign_3

Nature of Activities and Significant Accounting Policies (Tables)	12 Months Ended
	Dec. 31, 2021
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Calculations of earnings per share	The following table presents calculations of earnings per share: Year Ended December 31, 2021 2020 2019 (Amounts In Thousands, except share and per share data) Computation of weighted average number of basic and diluted shares: Common shares outstanding at the beginning of the year 9,330,995 9,351,694 9,336,441 Weighted average number of net shares (redeemed) issued (23,793) 17,571 19,304 Weighted average shares outstanding (basic) 9,307,202 9,369,265 9,355,745 Weighted average of potential dilutive shares attributable to stock options granted, computed under the treasury stock method 3,660 3,640 4,035 Weighted average number of shares (diluted) 9,310,862 9,372,905 9,359,780 Net income $ 48,085 $ 38,647 $ 45,318 Earnings per share: Basic $ 5.16 $ 4.12 $ 4.85 Diluted $ 5.16 $ 4.12 $ 4.85
Impact of ASC 326	The following table illustrates the impact of ASC 326 (amounts in thousands). January 1, 2021 As Reported Under ASC 326 Pre-ASC 326 Adoption Impact of ASC 326 Adoption Assets: Loans Allowance for credit losses on loans $ 39,816 $ 37,070 $ 2,746 Liabilities: Allowance for credit losses on off-balance sheet credit exposures $ 3,584 $ — $ 3,584

Investment Securities (Tables)

Investment Securities (Tables)	12 Months Ended
	Dec. 31, 2021
Investments, Debt and Equity Securities [Abstract]
Carrying values of investment securities	The carrying values of investment securities at December 31, 2021 and December 31, 2020 are summarized in the following table (Amounts in Thousands): December 31, 2021 December 31, 2020 Amount Percent Amount Percent Securities available for sale U.S. Treasury $ 243,925 44.24 % $ 148,646 36.40 % Other securities (FHLB, FHLMC and FNMA) 34,467 6.25 % 35,160 8.61 % State and political subdivisions 263,516 47.80 % 224,566 54.99 % Mortgage-backed securities and collateralized mortgage obligations 9,446 1.71 % — — % Total securities available for sale $ 551,354 100.00 % $ 408,372 100.00 %
Carrying amount of available-for-sale securities and approximate fair values	The carrying amount of available-for-sale securities and their approximate fair values were as follows (Amounts in Thousands): Amortized Gross Gross Allowance for Credit Losses Estimated December 31, 2021: U.S. Treasury $ 244,192 $ 2,011 $ (2,278) $ — $ 243,925 Other securities (FHLB, FHLMC and FNMA) 35,353 — (886) — 34,467 State and political subdivisions 260,266 4,420 (1,170) — 263,516 Mortgage-backed securities and collateralized mortgage obligations 9,575 — (129) — 9,446 Total $ 549,386 $ 6,431 $ (4,463) $ — $ 551,354 December 31, 2020: U.S. Treasury $ 143,467 $ 5,179 $ — $ — $ 148,646 Other securities (FHLB, FHLMC and FNMA) 35,195 35 (70) — 35,160 State and political subdivisions 218,008 6,674 (116) — 224,566 Total $ 396,670 $ 11,888 $ (186) $ — $ 408,372 Sales proceeds and gross realized gains and losses on available-for-sale securities were as follows (in thousands): December 31, 2021 December 31, 2020 Sales proceeds $ — $ 313 Gross realized gains — 10 Gross realized losses — —
Available-for-sale securities classified as per contractual maturities	The amortized cost and estimated fair value of available-for-sale securities classified according to their contractual maturities at December 31, 2021, were as follows (Amounts in Thousands). Amortized Fair Due in one year or less $ 68,862 $ 69,235 Due after one year through five years 308,895 309,142 Due after five years through ten years 113,536 115,364 Due over ten years 48,518 48,167 $ 539,811 $ 541,908 Mortgage-backed securities and collateralized mortgage obligations 9,575 9,446 $ 549,386 $ 551,354
Available-for-sale securities, continuous unrealized loss position, fair value	The following table shows the Company’s investments’ gross unrealized losses and fair value, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at December 31, 2021 and 2020 (Amounts in Thousands): Less than 12 months 12 months or more Total 2021 Description # Fair Value Unrealized Loss % # Fair Value Unrealized Loss % # Fair Value Unrealized Loss % of Securities U.S. Treasury 55 $ 136,867 $ (2,203) 1.61 % 1 $ 2,416 $ (75) 3.10 % 56 $ 139,283 $ (2,278) 1.64 % Other securities (FHLB, FHLMC and FNMA) 5 12,484 (303) 2.43 % 9 21,984 (583) 2.65 % 14 34,468 (886) 2.57 % State and political subdivisions 231 70,542 (1,055) 1.50 % 14 9,248 (115) 1.24 % 245 79,790 (1,170) 1.47 % Mortgage-backed securities and collateralized mortgage obligations 4 9,446 (129) 1.37 % — — — — % 4 9,446 (129) 1.37 % 295 $ 229,339 (3,690) 1.61 % 24 $ 33,648 $ (773) 2.30 % 319 $ 262,987 $ (4,463) 1.70 % Less than 12 months 12 months or more Total 2020 Description # Fair Value Unrealized Loss % # Fair Value Unrealized Loss % # Fair Value Unrealized Loss % of Securities U.S. Treasury — $ — $ — — % — $ — $ — — % — $ — $ — — % Other securities (FHLB, FHLMC and FNMA) 8 20,019 (70) 0.35 % — — — — % 8 20,019 (70) 0.35 % State and political subdivisions 35 14,168 (110) 0.78 % 4 370 (6) 1.62 % 39 14,538 (116) 0.80 % 43 $ 34,187 $ (180) 0.53 % 4 $ 370 $ (6) 1.62 % 47 $ 34,557 $ (186) 0.54 %

Loans (Tables)

Loans (Tables)	12 Months Ended
	Dec. 31, 2021
Receivables [Abstract]
Schedule of classes of loans	Classes of loans are as follows: December 31, 2021 2020 (Amounts In Thousands) Agricultural $ 106,933 $ 94,842 Commercial and financial 222,002 286,242 Real estate: Construction, 1 to 4 family residential 80,486 71,117 Construction, land development and commercial 127,021 111,913 Mortgage, farmland 232,744 247,142 Mortgage, 1 to 4 family first liens 909,564 892,089 Mortgage, 1 to 4 family junior liens 114,342 127,833 Mortgage, multi-family 382,792 374,014 Mortgage, commercial 401,377 417,139 Loans to individuals 32,687 31,325 Obligations of state and political subdivisions 50,285 56,488 2,660,233 2,710,144 Net unamortized fees and costs 299 938 2,660,532 2,711,082 Less allowance for credit losses (2021) and loan losses (2020) 35,470 37,070 $ 2,625,062 $ 2,674,012
Schedule of changes in allowance for loan losses	Changes in the allowance for credit losses, the allowance for credit losses applicable to individually evaluated loans and the related loan balances for the years ended December 31, 2021, 2020 and 2019 are as follows: Agricultural Commercial and Financial Real Estate: Construction Real Estate: Real Estate: Real Estate: Other Total (Amounts In Thousands) 2021 Allowance for credit losses: Beginning balance, prior to adoption of ASC 326 $ 2,508 $ 4,885 $ 2,319 $ 4,173 $ 12,368 $ 9,415 $ 1,402 $ 37,070 Impact of adopting ASC 326 (328) 298 327 763 522 1,396 (232) 2,746 Charge-offs (106) (136) (3) (1) (482) (265) (323) (1,316) Recoveries 142 1,103 94 25 964 263 152 2,743 Credit loss (benefit) expense 45 (1,881) (437) (1,527) (1,874) (311) 212 (5,773) Ending balance $ 2,261 $ 4,269 $ 2,300 $ 3,433 $ 11,498 $ 10,498 $ 1,211 $ 35,470 Ending balance, individually evaluated for credit losses $ 1 $ 189 $ 124 $ — $ 49 $ 1 $ 20 $ 384 Ending balance, collectively evaluated for credit losses $ 2,260 $ 4,080 $ 2,176 $ 3,433 $ 11,449 $ 10,497 $ 1,191 $ 35,086 Loan balances: Ending balance $ 106,933 $ 222,002 $ 207,507 $ 232,744 $ 1,023,906 $ 784,169 $ 82,972 $ 2,660,233 Ending balance, individually evaluated for credit losses $ 788 $ 2,062 $ 603 $ 1,277 $ 6,187 $ 5,696 $ 20 $ 16,633 Ending balance, collectively evaluated for credit losses $ 106,145 $ 219,940 $ 206,904 $ 231,467 $ 1,017,719 $ 778,473 $ 82,952 $ 2,643,600 Agricultural Commercial and Financial Real Estate: Construction Real Estate: Real Estate: Real Estate: Other Total (Amounts In Thousands) 2020 Allowance for loan losses: Beginning balance $ 2,400 $ 4,988 $ 2,599 $ 3,950 $ 10,638 $ 7,859 $ 1,326 $ 33,760 Charge-offs (43) (1,425) (43) (1) (738) (291) (381) (2,922) Recoveries 63 670 118 10 784 49 180 1,874 Provision 88 652 (355) 214 1,684 1,798 277 4,358 Ending balance $ 2,508 $ 4,885 $ 2,319 $ 4,173 $ 12,368 $ 9,415 $ 1,402 $ 37,070 Ending balance, individually evaluated for impairment $ 86 $ 411 $ 7 $ — $ 93 $ 14 $ 51 $ 662 Ending balance, collectively evaluated for impairment $ 2,422 $ 4,474 $ 2,312 $ 4,173 $ 12,275 $ 9,401 $ 1,351 $ 36,408 Loan balances: Ending balance $ 94,842 $ 286,242 $ 183,030 $ 247,142 $ 1,019,922 $ 791,153 $ 87,813 $ 2,710,144 Ending balance, individually evaluated for impairment $ 1,543 $ 2,191 $ 1,266 $ 2,061 $ 7,417 $ 6,200 $ 51 $ 20,729 Ending balance, collectively evaluated for impairment $ 93,299 $ 284,051 $ 181,764 $ 245,081 $ 1,012,505 $ 784,953 $ 87,762 $ 2,689,415 Agricultural Commercial and Financial Real Estate: Construction Real Estate: Real Estate: Real Estate: Other Total (Amounts In Thousands) 2019 Allowance for loan losses: Beginning balance $ 2,789 $ 5,826 $ 3,292 $ 3,972 $ 12,516 $ 8,165 $ 1,250 $ 37,810 Charge-offs (266) (981) (45) (6) (896) (341) (434) (2,969) Recoveries 95 646 8 5 700 180 165 1,799 Provision (218) (503) (656) (21) (1,682) (145) 345 (2,880) Ending balance $ 2,400 $ 4,988 $ 2,599 $ 3,950 $ 10,638 $ 7,859 $ 1,326 $ 33,760 Ending balance, individually evaluated for impairment $ 87 $ 792 $ — $ — $ 111 $ 1 $ 93 $ 1,084 Ending balance, collectively evaluated for impairment $ 2,313 $ 4,196 $ 2,599 $ 3,950 $ 10,527 $ 7,858 $ 1,233 $ 32,676 Loan balances: Ending balance $ 91,317 $ 221,323 $ 188,619 $ 242,730 $ 1,059,969 $ 752,942 $ 82,204 $ 2,639,104 Ending balance, individually evaluated for impairment $ 1,730 $ 2,742 $ 421 $ 4,081 $ 8,670 $ 3,188 $ 93 $ 20,925 Ending balance, collectively evaluated for impairment $ 89,587 $ 218,581 $ 188,198 $ 238,649 $ 1,051,299 $ 749,754 $ 82,111 $ 2,618,179 Changes in the allowance for credit losses for off-balance sheet credit exposures for the year ended December 31, 2021 were as follows: Year Ended December 31, 2021 Agricultural Commercial and Real Estate: Real Estate: Real Estate: Real Estate: Other Total (Amounts In Thousands) Allowance for credit losses for off-balance sheet credit exposures: Beginning balance, prior to adoption of ASC 326 $ — $ — $ — $ — $ — $ — $ — $ — Impact of adopting ASC 326 385 1,585 736 180 471 212 15 3,584 Credit loss (benefit) expense (2) (467) 113 (67) 323 347 19 266 (Charge-offs), net recoveries — — — — — — — — Ending balance $ 383 $ 1,118 $ 849 $ 113 $ 794 $ 559 $ 34 $ 3,850
Schedule of credit quality indicators by type of loans	The following tables present the credit quality indicators and origination years by type of loan in each category as of December 31, 2021 (amounts in thousands): Agricultural December 31, 2021 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Total Grade: Excellent $ 762 $ 213 $ 30 $ 10 $ — $ — $ 2,312 $ 3,327 Good 1,799 1,767 603 46 52 26 7,593 11,886 Satisfactory 10,335 6,404 1,476 1,770 403 66 26,285 46,739 Monitor 8,125 5,017 998 765 164 253 23,995 39,317 Special Mention 1,662 11 85 — 7 — 2,807 4,572 Substandard 592 69 203 — — — 228 1,092 Total $ 23,275 $ 13,481 $ 3,395 $ 2,591 $ 626 $ 345 $ 63,220 $ 106,933 Commercial and Financial December 31, 2021 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Total Grade: Excellent $ 965 $ 924 $ 4 $ 235 $ 31 $ — $ 3,391 $ 5,550 Good 13,722 5,570 1,105 1,086 276 1,494 20,709 43,962 Satisfactory 44,964 20,847 7,684 3,582 2,106 331 41,832 121,346 Monitor 18,337 8,019 3,591 1,123 297 416 13,368 45,151 Special Mention 603 525 353 70 102 4 174 1,831 Substandard 1,092 670 266 54 92 — 1,988 4,162 Total $ 79,683 $ 36,555 $ 13,003 $ 6,150 $ 2,904 $ 2,245 $ 81,462 $ 222,002 Real Estate: Construction, 1 to 4 Family Residential December 31, 2021 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Total Grade: Excellent $ — $ — $ — $ — $ — $ — $ — $ — Good 212 — — — — — 18,755 18,967 Satisfactory 7,457 94 — — — — 42,988 50,539 Monitor 1,307 — — — — — 9,187 10,494 Special Mention — — — — — — 374 374 Substandard 111 — — — — — 1 112 Total $ 9,087 $ 94 $ — $ — $ — $ — $ 71,305 $ 80,486 Real Estate: Construction, Land Development and Commercial December 31, 2021 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Total Grade: Excellent $ 5,079 $ — $ — $ — $ 143 $ 4 $ — $ 5,226 Good 3,294 1,200 — — 153 242 12,678 17,567 Satisfactory 22,907 4,354 2,356 263 1,081 21 40,048 71,030 Monitor 5,694 547 7 38 74 — 18,832 25,192 Special Mention — — — — — — — — Substandard 7,515 298 193 — — — — 8,006 Total $ 44,489 $ 6,399 $ 2,556 $ 301 $ 1,451 $ 267 $ 71,558 $ 127,021 Real Estate: Mortgage, Farmland December 31, 2021 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Total Grade: Excellent $ — $ 3,568 $ 124 $ 60 $ 80 $ 41 $ 134 $ 4,007 Good 17,827 14,308 2,144 2,460 5,932 3,929 3,844 50,444 Satisfactory 51,639 35,616 4,689 8,358 6,745 8,339 8,242 123,628 Monitor 8,532 16,925 5,518 3,901 2,154 4,866 5,695 47,591 Special Mention 4,031 288 — — 298 190 — 4,807 Substandard 1,283 447 291 47 — 199 — 2,267 Total $ 83,312 $ 71,152 $ 12,766 $ 14,826 $ 15,209 $ 17,564 $ 17,915 $ 232,744 Real Estate: Mortgage, 1 to 4 Family First Liens December 31, 2021 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Total Grade: Excellent $ 462 $ 914 $ 427 $ 19 $ 149 $ 404 $ 1 $ 2,376 Good 9,598 12,300 3,124 3,443 3,091 10,943 2,496 44,995 Satisfactory 233,412 189,247 69,037 65,201 60,906 118,608 8,443 744,854 Monitor 24,908 33,863 5,038 6,527 7,273 12,203 4,066 93,878 Special Mention 1,682 3,422 887 962 1,051 3,168 — 11,172 Substandard 1,571 1,261 1,129 1,609 576 6,142 1 12,289 Total $ 271,633 $ 241,007 $ 79,642 $ 77,761 $ 73,046 $ 151,468 $ 15,007 $ 909,564 Real Estate: Mortgage, 1 to 4 Family Junior Liens December 31, 2021 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Total Grade: Excellent $ — $ 13 $ — $ — $ — $ — $ 6 $ 19 Good 193 611 96 — 108 482 1,374 2,864 Satisfactory 13,684 10,116 5,854 7,309 5,230 6,053 55,496 103,742 Monitor 326 1,233 70 365 140 281 2,801 5,216 Special Mention 103 489 35 56 42 110 142 977 Substandard 77 209 79 441 74 99 545 1,524 Total $ 14,383 $ 12,671 $ 6,134 $ 8,171 $ 5,594 $ 7,025 $ 60,364 $ 114,342 Real Estate: Mortgage, Multi-Family December 31, 2021 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Total Grade: Excellent $ 2,539 $ 4,513 $ — $ — $ — $ 701 $ — $ 7,753 Good 16,931 35,396 1,555 — — 9,289 — 63,171 Satisfactory 107,192 69,287 13,635 2,030 1,561 14,660 14,764 223,129 Monitor 26,088 35,886 176 — 131 1,584 5,669 69,534 Special Mention 640 — 820 — — — — 1,460 Substandard 12,186 — — — — 5,559 — 17,745 Total $ 165,576 $ 145,082 $ 16,186 $ 2,030 $ 1,692 $ 31,793 $ 20,433 $ 382,792 Real Estate: Mortgage, Commercial December 31, 2021 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Total Grade: Excellent $ 597 $ 16,781 $ — $ — $ 3,313 $ 350 $ 1 $ 21,042 Good 20,143 36,773 2,619 1,356 3,811 7,085 9,812 81,599 Satisfactory 75,040 52,653 14,727 12,091 9,707 17,398 16,333 197,949 Monitor 18,664 49,774 3,923 2,202 3,037 8,461 3,387 89,448 Special Mention 5,791 795 303 — 554 337 — 7,780 Substandard 1,528 1,721 — 208 — 102 — 3,559 Total $ 121,763 $ 158,497 $ 21,572 $ 15,857 $ 20,422 $ 33,733 $ 29,533 $ 401,377 Loans to Individuals December 31, 2021 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Total Grade: Excellent $ — $ — $ — $ — $ — $ — $ — $ — Good — — 67 21 5 — 1 94 Satisfactory 12,162 5,606 2,212 967 141 10,867 57 32,012 Monitor 200 160 15 46 3 — 1 425 Special Mention 37 32 29 4 — — 1 103 Substandard 12 24 12 — 1 3 1 53 Total $ 12,411 $ 5,822 $ 2,335 $ 1,038 $ 150 $ 10,870 $ 61 $ 32,687 Obligations of State and Political Subdivisions December 31, 2021 2021 2020 2019 2018 2017 Prior Revolving Loans Amortized Cost Basis Total Grade: Excellent $ — $ — $ — $ — $ — $ 6,076 $ — $ 6,076 Good — 1,984 — — — 9,051 — 11,035 Satisfactory 1,009 2,034 1,551 706 11,557 3,634 9,400 29,891 Monitor — 933 203 249 — 1,898 — 3,283 Special Mention — — — — — — — — Substandard — — — — — — — — Total $ 1,009 $ 4,951 $ 1,754 $ 955 $ 11,557 $ 20,659 $ 9,400 $ 50,285 The following table presents the credit quality indicators by type of loans in each category as of December 31, 2020: Agricultural Commercial Real Estate: Real Estate: (Amounts In Thousands) 2020 Grade: Excellent $ 3,761 $ 9,024 $ — $ 227 Good 12,369 62,310 13,675 15,187 Satisfactory 42,015 144,999 41,616 64,301 Monitor 29,381 56,439 13,654 23,368 Special Mention 5,143 8,258 1,857 7,137 Substandard 2,173 5,212 315 1,693 Total $ 94,842 $ 286,242 $ 71,117 $ 111,913 Real Estate: Real Estate: Real Estate: Real Estate: 2020 Grade: Excellent $ 5,706 $ 2,303 $ 204 $ 14,650 Good 41,878 47,233 3,707 57,281 Satisfactory 129,210 701,273 115,731 197,493 Monitor 61,298 114,207 5,153 70,885 Special Mention 6,074 12,890 1,307 15,374 Substandard 2,976 14,183 1,731 18,331 Total $ 247,142 $ 892,089 $ 127,833 $ 374,014 Real Estate: Loans to Obligations of state Total 2020 Grade: Excellent $ 26,940 $ 1 $ 6,752 $ 69,568 Good 92,699 145 13,094 359,578 Satisfactory 196,310 30,487 26,571 1,690,006 Monitor 77,125 479 9,924 461,913 Special Mention 19,731 127 147 78,045 Substandard 4,334 86 — 51,034 Total $ 417,139 $ 31,325 $ 56,488 $ 2,710,144
Schedule of past due loans	Past due loans as of December 31, 2021 and 2020 were as follows: 30 - 59 Days 60 - 89 Days 90 Days Total Past Current Total Accruing Loans (Amounts In Thousands) December 31, 2021 Agricultural $ 41 $ — $ 219 $ 260 $ 106,673 $ 106,933 $ 6 Commercial and financial 300 537 468 1,305 220,697 222,002 91 Real estate: Construction, 1 to 4 family residential 276 — — 276 80,210 80,486 — Construction, land development and commercial 194 66 96 356 126,665 127,021 — Mortgage, farmland 503 362 — 865 231,879 232,744 — Mortgage, 1 to 4 family first liens 5,085 864 2,481 8,430 901,134 909,564 104 Mortgage, 1 to 4 family junior liens 246 41 124 411 113,931 114,342 — Mortgage, multi-family 640 — — 640 382,152 382,792 — Mortgage, commercial 466 — 829 1,295 400,082 401,377 — Loans to individuals 177 26 5 208 32,479 32,687 — Obligations of state and political subdivisions 394 — — 394 49,891 50,285 — $ 8,322 $ 1,896 $ 4,222 $ 14,440 $ 2,645,793 $ 2,660,233 $ 201 30 - 59 Days 60 - 89 Days 90 Days Total Past Current Total Accruing Loans (Amounts In Thousands) December 31, 2020 Agricultural $ 438 $ — $ 629 $ 1,067 $ 93,775 $ 94,842 $ 111 Commercial and financial 867 195 140 1,202 285,040 286,242 20 Real estate: Construction, 1 to 4 family residential 190 — 536 726 70,391 71,117 536 Construction, land development and commercial — — — — 111,913 111,913 — Mortgage, farmland 279 28 — 307 246,835 247,142 — Mortgage, 1 to 4 family first liens 4,969 1,342 2,486 8,797 883,292 892,089 342 Mortgage, 1 to 4 family junior liens 436 21 155 612 127,221 127,833 47 Mortgage, multi-family — — — — 374,014 374,014 — Mortgage, commercial 783 — 461 1,244 415,895 417,139 — Loans to individuals 218 59 4 281 31,044 31,325 — Obligations of state and political subdivisions — — — — 56,488 56,488 — $ 8,180 $ 1,645 $ 4,411 $ 14,236 $ 2,695,908 $ 2,710,144 $ 1,056
Schedule of impaired loan information	Certain nonaccrual and TDR loan information by loan type at December 31, 2021 and 2020 was as follows: December 31, 2021 December 31, 2020 Nonaccrual Interest income recognized on non-accrual Accruing loans TDR Nonaccrual Accruing loans TDR (Amounts In Thousands) (Amounts In Thousands) Agricultural $ 221 $ — $ 6 $ 374 $ 1,252 $ 111 $ 85 Commercial and financial 707 — 91 1,085 479 20 1,263 Real estate: Construction, 1 to 4 family residential 111 — — — 315 536 — Construction, land development and commercial 290 — — 202 204 — 211 Mortgage, farmland 251 — — 1,206 446 — 1,616 Mortgage, 1 to 4 family first liens 4,685 — 104 1,364 4,331 342 1,751 Mortgage, 1 to 4 family junior liens 200 — — 20 193 47 20 Mortgage, multi-family — — — 1,460 79 — 1,695 Mortgage, commercial 2,026 — — 2,210 1,550 — 3,610 Loans to individuals — — — — — — — $ 8,491 $ — $ 201 $ 7,921 $ 8,849 $ 1,056 $ 10,251 (1) There were $2.28 million and $2.97 million of TDR loans included within nonaccrual loans as of December 31, 2021 and 2020, respectively.
Schedule of information for TDR loans	Below is a summary of information for TDR loans as of December 31, 2021 and 2020: December 31, 2021 Number of Recorded Commitments (Dollar Amounts In Thousands) Agricultural 4 $ 586 $ — Commercial and financial 12 1,116 60 Real estate: Construction, 1 to 4 family residential — — — Construction, land development and commercial 1 202 — Mortgage, farmland 5 1,409 — Mortgage, 1 to 4 family first liens 14 1,441 — Mortgage, 1 to 4 family junior liens 1 20 — Mortgage, multi-family 2 1,460 — Mortgage, commercial 11 3,963 — Loans to individuals — — — 50 $ 10,197 $ 60 December 31, 2020 Number of Recorded Commitments (Dollar Amounts In Thousands) Agricultural 6 $ 1,028 $ — Commercial and financial 17 1,743 35 Real estate: Construction, 1 to 4 family residential — — — Construction, land development and commercial 1 211 4 Mortgage, farmland 6 2,009 — Mortgage, 1 to 4 family first liens 17 1,898 — Mortgage, 1 to 4 family junior liens 1 20 — Mortgage, multi-family 2 1,695 — Mortgage, commercial 13 4,621 — Loans to individuals — — — 63 $ 13,225 $ 39 A summary of TDR loans that were modified during the year ended December 31, 2021 and 2020 was as follows: December 31, 2021 Number of Pre-modification Post-modification ( Dollar Amounts In Thousands) Agricultural 1 $ 178 $ 178 Commercial and financial — — — Real estate: Construction, 1 to 4 family residential — — — Construction, land development and commercial — — — Mortgage, farmland 1 319 319 Mortgage, 1 to 4 family first liens 4 112 112 Mortgage, 1 to 4 family junior liens — — — Mortgage, multi-family — — — Mortgage, commercial 1 232 232 Loans to individuals — — — 7 $ 841 $ 841 December 31, 2020 Number of Pre-modification Post-modification ( Dollar Amounts In Thousands) Agricultural 2 $ 93 $ 93 Commercial and financial 7 623 623 Real estate: Construction, 1 to 4 family residential — — — Construction, land development and commercial — — — Mortgage, farmland — — — Mortgage, 1 to 4 family first liens 6 283 283 Mortgage, 1 to 4 family junior liens 1 20 20 Mortgage, multi-family — — — Mortgage, commercial 7 3,635 3,635 Loans to individuals — — — 23 $ 4,654 $ 4,654
Schedule of amortized cost basis of collateral dependent loans	The following table presents the amortized cost basis of collateral dependent loans, by the primary collateral type, which are individually evaluated to determine expected credit losses, and the related ACL allocated to these loans: Primary Type of Collateral Real Estate Accounts Receivable Equipment Other Total ACL Allocation (Amounts In Thousands) December 31, 2021 Agricultural $ 734 $ — $ 54 $ — $ 788 $ 1 Commercial and financial 1,951 — 111 — 2,062 189 Real estate: Construction, 1 to 4 family residential 111 — — — 111 111 Construction, land development and commercial 492 — — — $ 492 13 Mortgage, farmland 1,277 — — — 1,277 — Mortgage, 1 to 4 family first liens 5,967 — — — $ 5,967 31 Mortgage, 1 to 4 family junior liens 220 — — — 220 18 Mortgage, multi-family 1,460 — — — $ 1,460 — Mortgage, commercial 4,236 — — — 4,236 1 Loans to individuals 20 — — — $ 20 20 Obligations of state and political subdivisions — — — — — — $ 16,468 $ — $ 165 $ — $ 16,633 $ 384
Schedule of impaired loans	Pre-ASC 326 (CECL) adoption impaired loan information as of December 31, 2020 is as follows: Recorded Unpaid Related Average Interest (Amounts in Thousands) 2020 With no related allowance recorded: Agricultural $ 1,337 $ 1,928 $ — $ 1,518 $ 24 Commercial and financial 1,520 2,907 — 2,054 85 Real estate: Construction, 1 to 4 family residential 315 337 — 475 — Construction, land development and commercial 415 421 — 420 13 Mortgage, farmland 2,061 2,598 — 3,008 120 Mortgage, 1 to 4 family first liens 6,253 8,013 — 6,578 108 Mortgage, 1 to 4 family junior liens 108 350 — 134 — Mortgage, multi-family 1,773 1,898 — 1,795 80 Mortgage, commercial 4,124 4,960 — 4,315 126 Loans to individuals — 47 — — — $ 17,906 $ 23,459 $ — $ 20,297 $ 556 With an allowance recorded: Agricultural $ 206 $ 206 $ 86 $ 141 $ 14 Commercial and financial 671 724 411 755 27 Real estate: Construction, 1 to 4 family residential 536 536 7 486 24 Construction, land development and commercial — — — — — Mortgage, farmland — — — — — Mortgage, 1 to 4 family first liens 924 975 56 955 25 Mortgage, 1 to 4 family junior liens 132 158 37 149 2 Mortgage, multi-family — — — — — Mortgage, commercial 303 304 14 306 3 Loans to individuals 51 51 51 53 3 $ 2,823 $ 2,954 $ 662 $ 2,845 $ 98 Total: Agricultural $ 1,543 $ 2,134 $ 86 $ 1,659 $ 38 Commercial and financial 2,191 3,631 411 2,809 112 Real estate: Construction, 1 to 4 family residential 851 873 7 961 24 Construction, land development and commercial 415 421 — 420 13 Mortgage, farmland 2,061 2,598 — 3,008 120 Mortgage, 1 to 4 family first liens 7,177 8,988 56 7,533 133 Mortgage, 1 to 4 family junior liens 240 508 37 283 2 Mortgage, multi-family 1,773 1,898 — 1,795 80 Mortgage, commercial 4,427 5,264 14 4,621 129 Loans to individuals 51 98 51 53 3 $ 20,729 $ 26,413 $ 662 $ 23,142 $ 654 Information regarding impaired loans as of and for the year ended December 31, 2019 is as follows: Recorded Unpaid Related Average Interest (Amounts in Thousands) 2019 With no related allowance recorded: Agricultural $ 1,596 $ 2,157 $ — $ 1,785 $ 37 Commercial and financial 1,340 2,220 — 1,617 64 Real estate: Construction, 1 to 4 family residential 101 144 — 106 — Construction, land development and commercial 320 336 — 324 18 Mortgage, farmland 4,081 4,613 — 4,144 157 Mortgage, 1 to 4 family first liens 7,157 9,015 — 6,822 51 Mortgage, 1 to 4 family junior liens — 246 — — — Mortgage, multi-family 1,816 1,930 — 1,873 83 Mortgage, commercial 1,302 1,852 — 1,364 26 Loans to individuals — 14 — — — $ 17,713 $ 22,527 $ — $ 18,035 $ 436 With an allowance recorded: Agricultural $ 134 $ 134 $ 87 $ 287 $ 17 Commercial and financial 1,402 1,539 792 1,510 83 Real estate: Construction, 1 to 4 family residential — — — — — Construction, land development and commercial — — — — — Mortgage, farmland — — — — — Mortgage, 1 to 4 family first liens 1,280 1,501 64 1,318 29 Mortgage, 1 to 4 family junior liens 233 233 47 239 6 Mortgage, multi-family — — — — — Mortgage, commercial 70 70 1 73 4 Loans to individuals 93 93 93 62 2 $ 3,212 $ 3,570 $ 1,084 $ 3,489 $ 141 Total: Agricultural $ 1,730 $ 2,291 $ 87 $ 2,072 $ 54 Commercial and financial 2,742 3,759 792 3,127 147 Real estate: Construction, 1 to 4 family residential 101 144 — 106 — Construction, land development and commercial 320 336 — 324 18 Mortgage, farmland 4,081 4,613 — 4,144 157 Mortgage, 1 to 4 family first liens 8,437 10,516 64 8,140 80 Mortgage, 1 to 4 family junior liens 233 479 47 239 6 Mortgage, multi-family 1,816 1,930 — 1,873 83 Mortgage, commercial 1,372 1,922 1 1,437 30 Loans to individuals 93 107 93 62 2 $ 20,925 $ 26,097 $ 1,084 $ 21,524 $ 577

Property and Equipment (Tables)

Property and Equipment (Tables)	12 Months Ended
	Dec. 31, 2021
Property, Plant and Equipment [Abstract]
Major classes of property and equipment and the total accumulated depreciation	The major classes of property and equipment and the total accumulated depreciation are as follows: December 31, 2021 2020 (Amounts In Thousands) Land $ 11,266 $ 11,266 Buildings and improvements 38,041 37,512 Furniture and equipment 40,989 40,053 90,296 88,831 Less accumulated depreciation 56,006 52,953 Net $ 34,290 $ 35,878

Leases (Tables)

Leases (Tables)	12 Months Ended
	Dec. 31, 2021
Leases [Abstract]
Schedule of maturities of lease liabilities	As of December 31, 2021, maturities of lease liabilities were as follows: Year ending December 31: (Amounts In Thousands) 2022 464 2023 317 2024 250 2025 253 2026 257 Thereafter 1,499 Total lease payments 3,040 Less imputed interest (507) Total operating lease liabilities $ 2,533 Year ending December 31: (Amounts In Thousands) 2022 $ 319 2023 316 2024 82 2025 1 2026 1 Thereafter 3 $ 722

Interest-Bearing Deposits (Tabl

Interest-Bearing Deposits (Tables)	12 Months Ended
	Dec. 31, 2021
Interest-bearing Deposit Liabilities [Abstract]
Deposits	A summary of these deposits is as follows: December 31, 2021 2020 (Amounts In Thousands) NOW and other demand $ 964,730 $ 801,550 Savings 1,338,910 1,161,324 Time, $250,000 and over 88,517 114,260 Other time 508,736 583,244 $ 2,900,893 $ 2,660,378
Time Deposits	Time deposits have a maturity as follows: December 31, 2021 2020 (Amounts In Thousands) Due in one year or less $ 320,764 $ 307,962 Due after one year through two years 174,043 190,763 Due after two years through three years 63,193 150,275 Due after three years through four years 23,108 39,089 Due over four years 16,145 9,415 $ 597,253 $ 697,504

Federal Home Loan Bank Borrow_2

Federal Home Loan Bank Borrowings (Tables)	12 Months Ended
	Dec. 31, 2021
Federal Home Loan Banks [Abstract]
Schedule of federal home loan bank borrowings	As of December 31, 2021 and 2020, the borrowings were as follows: 2021 2020 (Effective interest rates as of December 31, 2021) (Amounts In Thousands) Due 2025, 2.81% to 2.94% — 45,000 Due 2026, 2.52% to 2.86% — 30,000 Due 2027, 2.76% to 2.95% — 30,000 $ — $ 105,000

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Tables)	12 Months Ended
	Dec. 31, 2021
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Components of accumulated other comprehensive income (AOCI)	The components of accumulated other comprehensive income (AOCI), included in stockholders’ equity, are as follows: December 31, 2021 2020 (amounts in thousands) Net unrealized gain on available-for-sale securities $ 1,968 $ 11,702 Net unrealized loss on derivatives used for cash flow hedges — — Tax effect (491) (2,920) Net-of-tax amount $ 1,477 $ 8,782

Employee Benefit Plans (Tables)

Employee Benefit Plans (Tables)	12 Months Ended
	Dec. 31, 2021
Retirement Benefits [Abstract]
Schedule of Employee Stock Ownership Plan (ESOP)	As of December 31, 2021 and 2020, the shares held by the ESOP, fair value and maximum cash obligation were as follows: 2021 2020 Shares held by the ESOP 735,482 757,262 Fair value per share $ 68.00 $ 62.50 Maximum cash obligation $ 50,013,000 $ 47,329,000
Schedule of stock options activity	A summary of the stock options is as follows: Number of Shares Weighted- Weighted-Average Aggregate Balance, December 31, 2018 9,020 $ 33.30 3.41 250 Granted 5,805 Exercised (1,800) Balance, December 31, 2019 13,025 $ 45.92 5.47 248 Granted — Exercised — Balance, December 31, 2020 13,025 $ 45.92 4.47 216 Granted — Exercised — Balance, December 31, 2021 13,025 $ 45.92 3.47 $ 288
Schedule of pertinent information related to the options outstanding	Other pertinent information related to the options outstanding at December 31, 2021 is as follows: Exercise Price Number Outstanding Remaining Contractual Life Number Exercisable 33.00 7,220 4 months 7,220 62.00 5,805 89 months — 13,025 7,220
Schedule of Restricted Stock Activity	A summary of the restricted stock option activity for the year ended December 31, 2021 is as follows: 2020 Stock Option and Incentive Plan 2010 Stock Option and Incentive Plan Number of Shares Weighted Average Grant Date Fair Value Number of Shares Weighted Average Grant Date Fair Value Balance, December 31, 2020 231,425 22,864 Authorization of shares — — Granted 24,513 $66.01 — $0.00 Forfeited 1,631 $62.81 6,452 $54.61 Balance, December 31, 2021 208,543 29,316

Income Taxes (Tables)

Income Taxes (Tables)	12 Months Ended
	Dec. 31, 2021
Income Tax Disclosure [Abstract]
Components of income tax	Income taxes for the years ended December 31, 2021, 2020 and 2019 are summarized as follows: 2021 2020 2019 (Amounts In Thousands) Current: Federal $ 10,383 $ 9,124 $ 8,857 State 2,653 2,673 2,391 Deferred: Federal 757 (417) 1,068 State 214 (103) 233 $ 14,007 $ 11,277 $ 12,549
Schedule of deferred tax assets and liabilities	Deferred tax assets and liabilities at December 31, 2021 and 2020 were as follows: December 31, 2021 2020 (Amounts In Thousands) Deferred income tax assets: Allowance for credit losses $ 8,849 $ 9,249 Deferred compensation and unearned restricted stock 2,239 2,401 Allowance for credit losses on off-balance sheet credit exposures 961 — Accrued expenses 611 589 State net operating loss 1,094 1,011 Gross deferred tax assets $ 13,754 $ 13,250 Valuation allowance (1,094) (1,011) Deferred tax asset, net of valuation allowance $ 12,660 $ 12,239 Deferred income tax liabilities: Property and equipment 1,852 1,941 Unrealized gains on investment securities 491 2,920 Goodwill 407 407 Prepaid expenses 400 431 Other 385 452 Gross deferred tax liabilities $ 3,535 $ 6,151 Net deferred tax assets $ 9,125 $ 6,088
Summary of change in deferred income tax	The net change in the deferred income taxes for the years ended December 31, 2021, 2020 and 2019 is reflected in the consolidated financial statements as follows: Year Ended December 31, 2021 2020 2019 (Amounts In Thousands) Consolidated statements of income $ 971 $ (520) $ 1,301 Consolidated statements of stockholders' equity (4,008) 2,450 1,550 $ (3,037) $ 1,930 $ 2,851
Schedule of effective income tax rate reconciliation	Income tax expense for the years ended December 31, 2021, 2020 and 2019 are less than the amounts computed by applying the maximum effective federal income tax rate to the income before income taxes because of the following items: 2021 2020 2019 Amount % Of Amount % Of Amount % Of (Amounts In Thousands) Expected tax expense $ 13,039 21.0 % $ 10,484 21.0 % $ 12,152 20.9 % Tax-exempt interest (1,176) (1.9) (1,219) (2.4) (1,201) (2.1) Interest expense limitation 50 0.1 79 0.1 109 0.2 State income taxes, net of federal income tax benefit 2,265 3.7 2,030 4.1 2,073 3.5 Income tax credits (475) (0.8) (51) (0.1) (531) (0.9) Other 304 0.5 (46) (0.1) (53) 0.1 $ 14,007 22.6 % $ 11,277 22.6 % $ 12,549 21.7 %

Regulatory Capital Requiremen_2

Regulatory Capital Requirements, Restrictions on Subsidiary Dividends and Cash Restrictions (Tables)	12 Months Ended
	Dec. 31, 2021
Regulatory Capital Requirements, Restrictions on Subsidiary Dividends and Cash Restrictions [Abstract]
Schedule of minimum regulatory requirements	The actual amounts and capital ratios as of December 31, 2021 and 2020, with the minimum regulatory requirements for the Company and Bank are presented below (amounts in thousands): Actual For Capital Adequacy Purposes Amount Ratio Ratio As of December 31, 2021: Company: Community Bank Leverage Ratio $ 484,486 11.80 % 8.50 % Bank: Community Bank Leverage Ratio 484,429 11.80 8.50 Actual For Capital Adequacy Purposes Amount Ratio Ratio As of December 31, 2020: Company: Community Bank Leverage Ratio $ 452,123 11.91 % 8.00 % Bank: Community Bank Leverage Ratio 453,073 11.94 8.00

Related Party Transactions (Tab

Related Party Transactions (Tables)	12 Months Ended
	Dec. 31, 2021
Related Party Transactions [Abstract]
Related Party Transactions	The following is an analysis of the changes in the loans to related parties during the years ended December 31, 2021 and 2020: Year Ended December 31, 2021 2020 (Amounts In Thousands) Balance, beginning $ 54,053 $ 55,717 Net increase due to change in related parties 735 — Advances 23,671 14,406 Collections (25,614) (16,070) Balance, ending $ 52,845 $ 54,053

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	12 Months Ended
	Dec. 31, 2021
Fair Value Disclosures [Abstract]
Carrying value and estimated fair values of entity's financial instruments	The carrying value and estimated fair values of the Company’s financial instruments as of December 31, 2021 are as follows: December 31, 2021 Carrying Estimated Readily Observable Company (Amounts In Thousands) Financial instrument assets: Cash and cash equivalents $ 781,918 $ 781,918 $ 781,918 $ — $ — Investment securities 555,900 555,900 243,925 311,975 — Loans held for sale 5,716 5,716 — 5,716 — Loans Agricultural 104,672 103,745 — — 103,745 Commercial and financial 217,733 216,466 — — 216,466 Real estate: Construction, 1 to 4 family residential 79,668 79,311 — — 79,311 Construction, land development and commercial 125,539 124,466 — — 124,466 Mortgage, farmland 229,311 228,365 — — 228,365 Mortgage, 1 to 4 family first liens 901,523 897,255 — — 897,255 Mortgage, 1 to 4 family junior liens 111,184 110,903 — — 110,903 Mortgage, multi-family 379,077 378,193 — — 378,193 Mortgage, commercial 394,594 391,950 — — 391,950 Loans to individuals 31,916 31,871 — — 31,871 Obligations of state and political subdivisions 49,845 50,155 — — 50,155 Accrued interest receivable 11,437 11,437 — 11,437 — Total financial instrument assets $ 3,980,033 $ 3,967,651 $ 1,025,843 $ 329,128 $ 2,612,680 Financial instrument liabilities: Deposits Noninterest-bearing deposits $ 633,101 $ 633,101 $ — $ 633,101 $ — Interest-bearing deposits 2,900,893 2,909,243 — 2,909,243 — Other borrowings 249 249 — 249 — Federal Home Loan Bank borrowings — — — — — Accrued interest payable 1,165 1,165 — 1,165 — Total financial instrument liabilities $ 3,535,408 $ 3,543,758 $ — $ 3,543,758 $ — Face Amount Financial instrument with off-balance sheet risk: Loan commitments $ 614,324 $ — $ — $ — $ — Letters of credit 7,179 — — — — Total financial instrument liabilities with off-balance-sheet risk $ 621,503 $ — $ — $ — $ — (1) Considered Level 1 under Accounting Standards Codification (“ASC”) Topic 820, Fair Value Measurements and Disclosures (“ASC 820”). (2) Considered Level 2 under ASC 820. (3) Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market. The carrying value and estimated fair values of the Company’s financial instruments as of December 31, 2020 are as follows: December 31, 2020 Carrying Estimated Readily Observable Company (Amounts In Thousands) Financial instrument assets: Cash and cash equivalents $ 574,310 $ 574,310 $ 574,310 $ — $ — Investment securities 416,544 416,544 148,646 267,898 — Loans held for sale 43,947 43,947 — 43,947 — Loans Agricultural 92,334 92,922 — — 92,922 Commercial and financial 281,357 282,015 — — 282,015 Real estate: Construction, 1 to 4 family residential 70,210 70,432 — — 70,432 Construction, land development and commercial 110,501 110,039 — — 110,039 Mortgage, farmland 242,969 242,978 — — 242,978 Mortgage, 1 to 4 family first liens 882,156 890,409 — — 890,409 Mortgage, 1 to 4 family junior liens 126,336 124,945 — — 124,945 Mortgage, multi-family 369,552 370,538 — — 370,538 Mortgage, commercial 412,186 413,409 — — 413,409 Loans to individuals 30,573 31,164 — — 31,164 Obligations of state and political subdivisions 55,838 59,300 — — 59,300 Accrued interest receivable 12,177 12,177 — 12,177 — Total financial instrument assets $ 3,720,990 $ 3,735,129 $ 722,956 $ 324,022 $ 2,688,151 Financial instrument liabilities: Deposits Noninterest-bearing deposits $ 532,190 $ 532,190 $ — $ 532,190 $ — Interest-bearing deposits 2,660,378 2,673,815 — 2,673,815 — Federal Home Loan Bank Borrowings 105,000 115,259 — 115,259 — Accrued interest payable 1,733 1,733 — 1,733 — Total financial instrument liabilities $ 3,299,301 $ 3,322,997 $ — $ 3,322,997 $ — Face Amount Financial instrument with off-balance sheet risk: Loan commitments $ 483,602 $ — $ — $ — $ — Letters of credit 8,056 — — — — Total financial instrument liabilities with off-balance-sheet risk $ 491,658 $ — $ — $ — $ — (1) Considered Level 1 under Accounting Standards Codification (“ASC”) Topic 820, Fair Value Measurements and Disclosures (“ASC 820”). (2) Considered Level 2 under ASC 820. (3) Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market
Schedule of assets and liabilities measured at fair value on a recurring basis	The table below represents the balances of assets and liabilities measured at fair value on a recurring basis: December 31, 2021 Readily Available Observable Company Total at Securities available for sale (Amounts in Thousands) U.S. Treasury $ 243,925 $ — $ — $ 243,925 State and political subdivisions — 263,516 — 263,516 Mortgage-backed securities and collateralized mortgage obligations — 9,446 — 9,446 Other securities (FHLB, FHLMC and FNMA) — 34,467 — 34,467 Total $ 243,925 $ 307,429 $ — $ 551,354 December 31, 2020 Readily Available Observable Company Total at Securities available for sale (Amounts in Thousands) U.S. Treasury $ 148,646 $ — $ — $ 148,646 State and political subdivisions — 224,566 — 224,566 Other securities (FHLB, FHLMC and FNMA) — 35,160 — 35,160 Total $ 148,646 $ 259,726 $ — $ 408,372 (1) Considered Level 1 under ASC 820. (2) Considered Level 2 under ASC 820. (3) Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market.
Schedule of assets measured at fair value on a nonrecurring basis	For assets measured at fair value on a nonrecurring basis that were still held on the balance sheet at December 31, 2021 and 2020, the following tables provide the level of valuation assumptions used to determine the adjustment and the carrying value of the related individual assets at year end. December 31, 2021 Year Ended December 31, 2021 Readily Observable Company Total at Total (Amounts in Thousands) Loans (4) Agricultural $ — $ — $ 399 $ 399 $ — Commercial and financial — — 1,527 1,527 — Real Estate: Construction, 1 to 4 family residential — — 383 383 — Construction, land development and commercial — — 96 96 — Mortgage, farmland — — 1,114 1,114 — Mortgage, 1 to 4 family first liens — — 5,902 5,902 212 Mortgage, 1 to 4 family junior liens — — 202 202 9 Mortgage, multi-family — — 1,460 1,460 — Mortgage, commercial — — 4,176 4,176 255 Loans to individuals — — — — — Foreclosed assets (5) — — — — — Total $ — $ — $ 15,259 $ 15,259 $ 476 (1) Considered Level 1 under ASC 820. (2) Considered Level 2 under ASC 820. (3) Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market. (4) Represents carrying value and related write-downs of loans for which adjustments are based on the value of the collateral. The carrying value of loans fully charged off is zero. (5) Represents the fair value and related losses of foreclosed real estate and other collateral owned that were measured at fair value subsequent to their initial classification as foreclosed assets. December 31, 2020 Year Ended December 31, 2020 Readily Observable Company Total at Total (Amounts in Thousands) Loans (4) Agricultural $ — $ — $ 1,081 $ 1,081 $ — Commercial and financial — — 1,692 1,692 385 Real Estate: Construction, 1 to 4 family residential — — 414 414 — Construction, land development and commercial — — 315 315 — Mortgage, farmland — — 1,718 1,718 — Mortgage, 1 to 4 family first liens — — 5,906 5,906 252 Mortgage, 1 to 4 family junior liens — — 176 176 19 Mortgage, multi-family — — 1,773 1,773 — Mortgage, commercial — — 5,082 5,082 250 Loans to individuals — — — — — Foreclosed assets (5) — — — — — Total $ — $ — $ 18,157 $ 18,157 $ 906 (1) Considered Level 1 under ASC 820. (2) Considered Level 2 under ASC 820. (3) Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market. (4) Represents carrying value and related write-downs of loans for which adjustments are based on the value of the collateral. The carrying value of loans fully charged off is zero. (5) Represents the fair value and related losses of foreclosed real estate and other collateral owned that were measured at fair value subsequent to their initial classification as foreclosed assets.

Parent Company Only Financial_2

Parent Company Only Financial Information (Tables)	12 Months Ended
	Dec. 31, 2021
Condensed Financial Information Disclosure [Abstract]
CONDENSED BALANCE SHEETS	ASSETS 2021 2020 Cash and cash equivalents at subsidiary bank $ 2,176 $ 1,100 Investment in subsidiary bank 488,406 464,355 Other assets 2,067 1,846 Total assets $ 492,649 $ 467,301 LIABILITIES AND STOCKHOLDERS' EQUITY Liabilities $ 4,186 $ 3,896 Redeemable common stock held by ESOP 50,013 47,329 Stockholders' equity: Capital stock 60,938 60,233 Retained earnings 474,392 439,831 Accumulated other comprehensive gain 1,477 8,782 Treasury stock at cost (48,344) (45,441) 488,463 463,405 Less maximum cash obligation related to ESOP shares 50,013 47,329 Total stockholders' equity 438,450 416,076 Total liabilities and stockholders' equity $ 492,649 $ 467,301
CONDENSED STATEMENTS OF INCOME	2021 2020 2019 Dividends received from subsidiary $ 12,273 $ 14,822 $ 7,657 Other expenses (836) (362) (708) Income before income tax benefit and equity in undistributed income of subsidiary 11,437 14,460 6,949 Income tax benefit 297 173 271 11,734 14,633 7,220 Equity in undistributed income of subsidiary 36,351 24,014 38,098 Net income $ 48,085 $ 38,647 $ 45,318
CONDENSED STATEMENTS OF CASH FLOWS	2021 2020 2019 Cash flows from operating activities: Net income $ 48,085 $ 38,647 $ 45,318 Adjustments to reconcile net income to cash and cash equivalents provided by operating activities: Equity in undistributed income of subsidiary (36,351) (24,014) (38,098) Share-based compensation 25 25 14 Compensation expensed through issuance of common stock 1,618 1,272 1,133 Forfeiture of common stock (455) (257) (262) Increase in other assets (221) (515) (100) Increase (decrease) in other liabilities 290 (3,554) 1,036 Net cash and cash equivalents provided by operating activities 12,991 11,604 9,041 Cash flows from financing activities: Issuance of common stock, net of costs — 5,844 5,026 Stock options exercised — — 62 Purchase of treasury stock (3,569) (8,550) (5,534) Proceeds from the issuance of common stock through the employee stock purchase plan 427 413 434 Capital contribution to subsidiary — (5,000) — Dividends paid (8,773) (8,325) (7,657) Net cash and cash equivalents used by financing activities (11,915) (15,618) (7,669) Increase (decrease) in cash and cash equivalents 1,076 (4,014) 1,372 Cash and cash equivalents: Beginning of year 1,100 5,114 3,742 Ending of year $ 2,176 $ 1,100 $ 5,114 Supplemental Disclosures Noncash financing activities: Increase (decrease) in maximum cash obligation related to ESOP shares $ 2,684 $ (4,497) $ 2,956

Commitments and Contingencies (

Commitments and Contingencies (Tables)	12 Months Ended
	Dec. 31, 2021
Commitments and Contingencies Disclosure [Abstract]
Schedule of banks commitments	A summary of the Bank’s commitments at December 31, 2021 and 2020 is as follows: 2021 2020 (Amounts In Thousands) Firm loan commitments and unused portion of lines of credit: Home equity loans $ 78,961 $ 69,974 Credit cards 65,913 60,535 Commercial, real estate and home construction 170,539 118,186 Commercial lines and real estate purchase loans 298,911 234,907 Outstanding letters of credit 7,179 8,056
Schedule of maturities of lease liabilities	As of December 31, 2021, maturities of lease liabilities were as follows: Year ending December 31: (Amounts In Thousands) 2022 464 2023 317 2024 250 2025 253 2026 257 Thereafter 1,499 Total lease payments 3,040 Less imputed interest (507) Total operating lease liabilities $ 2,533 Year ending December 31: (Amounts In Thousands) 2022 $ 319 2023 316 2024 82 2025 1 2026 1 Thereafter 3 $ 722

Quarterly Results of Operatio_2

Quarterly Results of Operations (unaudited, amounts in thousands, except per share amounts) (Tables)	12 Months Ended
	Dec. 31, 2021
Quarterly Financial Information Disclosure [Abstract]
Quarterly Results of Operations	Quarter Ended March June September December Year 2021 Interest income $ 31,127 $ 30,794 $ 31,196 $ 28,972 $ 122,089 Interest expense 4,894 4,598 4,172 3,963 17,627 Net interest income $ 26,233 $ 26,196 $ 27,024 $ 25,009 $ 104,462 Credit loss (benefit) expense (2,984) (1,659) 82 (946) (5,507) Other income 9,038 7,982 8,244 8,200 33,464 Other expense 18,699 18,219 18,198 26,225 81,341 Income before income taxes $ 19,556 $ 17,618 $ 16,988 $ 7,930 $ 62,092 Income taxes 4,359 4,008 3,863 1,777 14,007 Net income $ 15,197 $ 13,610 $ 13,125 $ 6,153 $ 48,085 Basic earnings per share $ 1.63 $ 1.46 $ 1.41 $ 0.66 $ 5.16 Diluted earnings per share 1.63 1.46 1.41 0.66 5.16 2020 Interest income $ 32,452 $ 32,246 $ 31,675 $ 32,156 $ 128,529 Interest expense 7,862 6,645 6,465 5,980 26,952 Net interest income $ 24,590 $ 25,601 $ 25,210 $ 26,176 $ 101,577 Provision for loan losses 4,649 8 (157) (142) 4,358 Other income 6,167 6,531 7,510 8,128 28,336 Other expense 17,227 16,872 18,055 23,477 75,631 Income before income taxes $ 8,881 $ 15,252 $ 14,822 $ 10,969 $ 49,924 Income taxes 1,806 3,541 3,392 2,538 11,277 Net income $ 7,075 $ 11,711 $ 11,430 $ 8,431 $ 38,647 Basic earnings per share $ 0.75 $ 1.25 $ 1.22 $ 0.90 $ 4.12 Diluted earnings per share 0.75 1.25 1.22 0.90 4.12

Derivative Financial Instrume_2

Derivative Financial Instruments (Tables)	12 Months Ended
	Dec. 31, 2021
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Identification of the gains and losses recognized on the derivative instruments designated as cash flow hedges	There were no gains or losses recognized on the Bank's derivative instruments designated as cash flow hedges for the year ended December 31, 2021. The table below identifies the gains and losses recognized on the Bank’s derivative instruments designated as cash flow hedges for the year ended December 31, 2020: Recognized in OCI Reclassified from AOCI into Income Recognized in Income on Derivatives Amount of Gain (Loss) Category Amount of Gain (Loss) Category Amount of Gain (Loss) (Amounts in Thousands) December 31, 2020 Interest rate swap $ 209 Interest Expense $ — Other Income $ — Interest rate swap (438) Interest Expense (1,992) Other Income —

Nature of Activities and Sign_4

Nature of Activities and Significant Accounting Policies - Narrative (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)propertysegment	Dec. 31, 2020USD ($)	Jan. 01, 2021USD ($)	Apr. 30, 2020USD ($)	Dec. 31, 2019USD ($)	Dec. 31, 2018USD ($)
Nature of activities
Number of Reportable Segments | segment	1
Tax credit real estate
Number of multi family rental properties | property	3
Number of assisted living rental properties | property	3
Number of multi tenant rental properties for persons with disabilities | property	1
Number of multi family senior living rental properties | property	1
Limited partnership, capital contribution				$ 4,180
Duration of tax credit of each property	10 years
Deferred income taxes
Recognized income tax positions, maximum realized (in hundredths)	50.00%
Effect of New Financial Accounting Standards
Estimated increase to allowance for credit losses for loans	$ 35,470	$ 37,070	$ 37,070		$ 33,760	$ 37,810
Allowance for credit losses on off-balance sheet credit exposures	3,850	0	0
Accrued interest receivable	11,437	12,177
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss	2,050
Deferred income taxes, net (Notes 1 and 10)	9,125	6,088
Stockholders' Equity Attributable to Parent	(438,450)	(416,076)			$ (375,211)	$ (334,882)
Loans Held For Investment
Effect of New Financial Accounting Standards
Accrued interest receivable	9,290
Cumulative Effect, Period Of Adoption, Adjustment
Effect of New Financial Accounting Standards
Estimated increase to allowance for credit losses for loans		2,746	2,746
Allowance for credit losses on off-balance sheet credit exposures	$ 3,584	3,580	3,584
Deferred income taxes, net (Notes 1 and 10)		1,580
Stockholders' Equity Attributable to Parent		4,751
Cumulative Effect, Period of Adoption, Adjusted Balance
Effect of New Financial Accounting Standards
Estimated increase to allowance for credit losses for loans			39,816
Allowance for credit losses on off-balance sheet credit exposures			$ 3,584
Stockholders' Equity Attributable to Parent		$ (411,325)
Each Limited Partnership
Tax credit real estate
Ownership interest in each limited partnership (or greater)	99.00%
Building and Improvements [Member] | Minimum [Member]
Property and equipment
Estimated useful lives	7 years	7 years
Building and Improvements [Member] | Maximum [Member]
Property and equipment
Estimated useful lives	40 years	40 years
Furniture and Equipment [Member] | Minimum [Member]
Property and equipment
Estimated useful lives	3 years	3 years
Furniture and Equipment [Member] | Maximum [Member]
Property and equipment
Estimated useful lives	10 years	10 years

Nature of Activities and Sign_5

Nature of Activities and Significant Accounting Policies - Earning per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Computation of weighted average number of basic and diluted shares:
Common shares outstanding at the beginning of the year									9,330,995	9,351,694	9,336,441
Weighted average number of net shares (redeemed) issued									(23,793)	17,571	19,304
Weighted average shares outstanding (basic)									9,307,202	9,369,265	9,355,745
Weighted average of potential dilutive shares attributable to stock options granted, computed under the treasury stock method									3,660	3,640	4,035
Weighted average number of shares (diluted)									9,310,862	9,372,905	9,359,780
Net income	$ 6,153	$ 13,125	$ 13,610	$ 15,197	$ 8,431	$ 11,430	$ 11,711	$ 7,075	$ 48,085	$ 38,647	$ 45,318
Earnings per share:
Basic (in dollars per share)	$ 0.66	$ 1.41	$ 1.46	$ 1.63	$ 0.90	$ 1.22	$ 1.25	$ 0.75	$ 5.16	$ 4.12	$ 4.85
Diluted (in dollars per share)	$ 0.66	$ 1.41	$ 1.46	$ 1.63	$ 0.90	$ 1.22	$ 1.25	$ 0.75	$ 5.16	$ 4.12	$ 4.85

Investment Securities - Carryin

Investment Securities - Carrying Values of Investment Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Abstract]
Investment in subsidiary bank	$ 551,354	$ 408,372
Securities available for sale, Percent	100.00%	100.00%
US Treasury [Member]
Debt Securities, Available-for-sale [Abstract]
Investment in subsidiary bank	$ 243,925	$ 148,646
Securities available for sale, Percent	44.24%	36.40%
Other securities (FHLB, FHLMC and FNMA) [Member]
Debt Securities, Available-for-sale [Abstract]
Investment in subsidiary bank	$ 34,467	$ 35,160
Securities available for sale, Percent	6.25%	8.61%
State and political subdivisions [Member]
Debt Securities, Available-for-sale [Abstract]
Investment in subsidiary bank	$ 263,516	$ 224,566
Securities available for sale, Percent	47.80%	54.99%
Mortgage Backed Securities, Other
Debt Securities, Available-for-sale [Abstract]
Investment in subsidiary bank	$ 9,446	$ 0
Securities available for sale, Percent	1.71%	0.00%

Investment Securities - Carry_2

Investment Securities - Carrying Amount of Available-for-Sale Securities and Approximate Fair Values and Classified as per Contractual Maturities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	$ 549,386	$ 396,670
Gross Unrealized Gains	6,431	11,888
Gross Unrealized (Losses)	(4,463)	(186)
Allowance for Credit Losses	0	0
Estimated Fair Value	551,354	408,372
Amortized Cost
Due in one year or less	68,862
Due after one year through five years	308,895
Due after five years through ten years	113,536
Due over ten years	48,518
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Amortized Cost, Total	539,811
Fair Value
Due in one year or less	69,235
Due after one year through five years	309,142
Due after five years through ten years	115,364
Due over ten years	48,167
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Fair Value, Total	541,908
US Treasury [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	244,192	143,467
Gross Unrealized Gains	2,011	5,179
Gross Unrealized (Losses)	(2,278)	0
Allowance for Credit Losses	0	0
Estimated Fair Value	243,925	148,646
Other securities (FHLB, FHLMC and FNMA) [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	35,353	35,195
Gross Unrealized Gains	0	35
Gross Unrealized (Losses)	(886)	(70)
Allowance for Credit Losses	0	0
Estimated Fair Value	34,467	35,160
State and political subdivisions [Member]
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	260,266	218,008
Gross Unrealized Gains	4,420	6,674
Gross Unrealized (Losses)	(1,170)	(116)
Allowance for Credit Losses	0	0
Estimated Fair Value	263,516	224,566
Mortgage Backed Securities, Other
Debt Securities, Available-for-sale [Line Items]
Amortized Cost	9,575
Gross Unrealized Gains	0
Gross Unrealized (Losses)	(129)
Allowance for Credit Losses	0
Estimated Fair Value	9,446	$ 0
Amortized Cost
Mortgage-backed securities and collateralized mortgage obligations	9,575
Fair Value
Mortgage-backed securities and collateralized mortgage obligations	$ 9,446

Investment Securities Available

Investment Securities Available-for-sale, debt securities, summary of proceeds, gains and losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Available-for-sale, debt securities, realized gains (loss) [Abstract]
Sales proceeds	$ 0	$ 313	$ 12,467
Gross realized gains	0	10
Gross realized losses	$ 0	$ 0

Investment Securities - Narrati

Investment Securities - Narrative (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Debt Securities, Available-for-sale [Line Items]
Investment in subsidiary bank	$ 551,354	$ 408,372
Collateralized Securities [Member]
Debt Securities, Available-for-sale [Line Items]
Investment in subsidiary bank	$ 10,030

Investment Securities - Availab

Investment Securities - Available-for-Sale Securities, Continuous Unrealized Loss Position, Fair Value (Details) $ in Thousands	Dec. 31, 2021USD ($)security	Dec. 31, 2020USD ($)security
Less than 12 months
Number of securities | security	295	43
Fair Value	$ 229,339	$ 34,187
Unrealized Loss	$ (3,690)	$ (180)
Percent of Unrealized Loss	1.61%	0.53%
12 months or more
Number of securities | security	24	4
Fair Value	$ 33,648	$ 370
Unrealized Loss	$ (773)	$ (6)
Percent of Unrealized Loss	2.30%	1.62%
Total
Number of securities | security	319	47
Fair Value	$ 262,987	$ 34,557
Unrealized Loss	$ (4,463)	$ (186)
Percent of Unrealized Loss	1.70%	0.54%
US Treasury Securities [Member]
Less than 12 months
Number of securities | security	55	0
Fair Value	$ 136,867	$ 0
Unrealized Loss	$ (2,203)	$ 0
Percent of Unrealized Loss	1.61%	0.00%
12 months or more
Number of securities | security	1	0
Fair Value	$ 2,416	$ 0
Unrealized Loss	$ (75)	$ 0
Percent of Unrealized Loss	3.10%	0.00%
Total
Number of securities | security	56	0
Fair Value	$ 139,283	$ 0
Unrealized Loss	$ (2,278)	$ 0
Percent of Unrealized Loss	1.64%	0.00%
Other securities (FHLB, FHLMC and FNMA) [Member]
Less than 12 months
Number of securities | security	5	8
Fair Value	$ 12,484	$ 20,019
Unrealized Loss	$ (303)	$ (70)
Percent of Unrealized Loss	2.43%	0.35%
12 months or more
Number of securities | security	9	0
Fair Value	$ 21,984	$ 0
Unrealized Loss	$ (583)	$ 0
Percent of Unrealized Loss	2.65%	0.00%
Total
Number of securities | security	14	8
Fair Value	$ 34,468	$ 20,019
Unrealized Loss	$ (886)	$ (70)
Percent of Unrealized Loss	2.57%	0.35%
State and political subdivisions [Member]
Less than 12 months
Number of securities | security	231	35
Fair Value	$ 70,542	$ 14,168
Unrealized Loss	$ (1,055)	$ (110)
Percent of Unrealized Loss	1.50%	0.78%
12 months or more
Number of securities | security	14	4
Fair Value	$ 9,248	$ 370
Unrealized Loss	$ (115)	$ (6)
Percent of Unrealized Loss	1.24%	1.62%
Total
Number of securities | security	245	39
Fair Value	$ 79,790	$ 14,538
Unrealized Loss	$ (1,170)	$ (116)
Percent of Unrealized Loss	1.47%	0.80%
Mortgage Backed Securities, Other
Less than 12 months
Fair Value	$ 9,446
Unrealized Loss	(129)
12 months or more
Fair Value	0
Unrealized Loss	$ 0
Total
Number of securities | security	4
Fair Value	$ 9,446
Unrealized Loss	$ (129)
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less than 12 Months, Number of Positions | security	4
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Less Than Twelve Months, Percentage, Unrealized Loss	1.37%
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, 12 Months or Longer, Number of Positions | security	0
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Twelve Months Or Longer, Percentage, Unrealized Loss	0.00%
Debt Securities, Available-for-sale, Continuous Unrealized Loss Position, Percentage, Unrealized Loss	1.37%

Loans - Classes of Loans (Detai

Loans - Classes of Loans (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Jan. 01, 2021	Dec. 31, 2019	Dec. 31, 2018
Summary of classes of loans [Abstract]
Financing Receivable, before Allowance for Credit Loss and Fee	$ 2,660,233	$ 2,710,144
Finance Receivable, Unamortized Loan Fee (Cost)	299	938
Financing Receivable, before Allowance for Credit Loss	2,660,532	2,711,082		$ 2,639,104
Less allowance for credit losses (2021) and loan losses (2020)	35,470	37,070
Estimated increase to allowance for credit losses for loans	35,470	37,070	$ 37,070	33,760	$ 37,810
Loans, net of allowance for credit losses (2021 $35,470; 2020 $37,070) (Notes 1, 3, and 12)	2,625,062	2,674,012
Commercial and Financial [Member]
Summary of classes of loans [Abstract]
Financing Receivable, before Allowance for Credit Loss and Fee	222,002	286,242
Financing Receivable, before Allowance for Credit Loss	222,002	286,242		221,323
Estimated increase to allowance for credit losses for loans	4,269	4,885		4,988	5,826
Construction, land development and commercial [Member]
Summary of classes of loans [Abstract]
Financing Receivable, before Allowance for Credit Loss and Fee	127,021	111,913
Financing Receivable, before Allowance for Credit Loss	127,021	111,913
Mortgage, farmland [Member]
Summary of classes of loans [Abstract]
Financing Receivable, before Allowance for Credit Loss and Fee	232,744	247,142
Financing Receivable, before Allowance for Credit Loss	232,744	247,142		242,730
Estimated increase to allowance for credit losses for loans	3,433	4,173		$ 3,950	$ 3,972
Mortgage, 1 to 4 family first liens [Member]
Summary of classes of loans [Abstract]
Financing Receivable, before Allowance for Credit Loss and Fee	909,564	892,089
Financing Receivable, before Allowance for Credit Loss	909,564	892,089
Mortgage, 1 to 4 family junior liens [Member]
Summary of classes of loans [Abstract]
Financing Receivable, before Allowance for Credit Loss and Fee	114,342	127,833
Financing Receivable, before Allowance for Credit Loss	114,342	127,833
Mortgage, multi-family [Member]
Summary of classes of loans [Abstract]
Financing Receivable, before Allowance for Credit Loss and Fee	382,792	374,014
Financing Receivable, before Allowance for Credit Loss	382,792	374,014
Mortgage, commercial [Member]
Summary of classes of loans [Abstract]
Financing Receivable, before Allowance for Credit Loss and Fee	401,377	417,139
Financing Receivable, before Allowance for Credit Loss	401,377	417,139
Loans to individuals [Member]
Summary of classes of loans [Abstract]
Financing Receivable, before Allowance for Credit Loss and Fee	32,687	31,325
Financing Receivable, before Allowance for Credit Loss	32,687	31,325
Obligations of state and political subdivisions [Member]
Summary of classes of loans [Abstract]
Financing Receivable, before Allowance for Credit Loss and Fee	50,285	56,488
Financing Receivable, before Allowance for Credit Loss	50,285	56,488
Construction, 1 to 4 family residential [Member]
Summary of classes of loans [Abstract]
Financing Receivable, before Allowance for Credit Loss and Fee	80,486	71,117
Financing Receivable, before Allowance for Credit Loss	80,486	71,117
Small Business Administration SBA, CARES Act, Paycheck Protection Program | Commercial and Financial [Member]
Summary of classes of loans [Abstract]
Loans and receivable	5,340	86,500
Payment for (Proceeds from) Loans and Leases, Payment of PPP loans forgiven	$ 140,100	$ 40,400

Loans - Allowance For Credit Lo

Loans - Allowance For Credit Losses (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Jan. 01, 2021
Allowance for credit losses:
Beginning balance, prior to adoption of ASC 326	$ 37,070	$ 33,760	$ 37,810
Charge-offs	(1,316)	(2,922)	(2,969)
Recoveries	2,743	1,874	1,799
Credit loss (benefit) expense	(5,773)	4,358	(2,880)
Ending balance	35,470	37,070	33,760
Ending balance, individually evaluated for credit losses	384	662	1,084
Ending balance, collectively evaluated for credit losses	35,086	36,408	32,676
Financing Receivable, before Allowance for Credit Loss and Fee	2,660,233	2,710,144
Loan balances:
Ending balance	2,660,532	2,711,082	2,639,104
Ending balance, individually evaluated for credit losses	16,633	20,729	20,925
Ending balance, collectively evaluated for credit losses	2,643,600	2,689,415	2,618,179
Allowance for credit losses on off-balance sheet credit exposures	3,850	0		$ 0
Off-Balance Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal)	266
off-balance sheet, allowance for credit loss, (charge-offs)/Net Recoveries	0
Cumulative Effect, Period Of Adoption, Adjustment
Allowance for credit losses:
Beginning balance, prior to adoption of ASC 326	2,746
Ending balance		2,746
Loan balances:
Allowance for credit losses on off-balance sheet credit exposures	3,584	3,580		3,584
Agricultural [Member]
Allowance for credit losses:
Beginning balance, prior to adoption of ASC 326	2,508	2,400	2,789
Charge-offs	(106)	(43)	(266)
Recoveries	142	63	95
Credit loss (benefit) expense	45	88	(218)
Ending balance	2,261	2,508	2,400
Ending balance, individually evaluated for credit losses	1	86	87
Ending balance, collectively evaluated for credit losses	2,260	2,422	2,313
Financing Receivable, before Allowance for Credit Loss and Fee	106,933	94,842
Loan balances:
Ending balance	106,933	94,842	91,317
Ending balance, individually evaluated for credit losses	788	1,543	1,730
Ending balance, collectively evaluated for credit losses	106,145	93,299	89,587
Allowance for credit losses on off-balance sheet credit exposures	383			0
Off-Balance Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal)	(2)
off-balance sheet, allowance for credit loss, (charge-offs)/Net Recoveries	0
Agricultural [Member] | Cumulative Effect, Period Of Adoption, Adjustment
Allowance for credit losses:
Beginning balance, prior to adoption of ASC 326	(328)
Ending balance		(328)
Loan balances:
Allowance for credit losses on off-balance sheet credit exposures	385
Commercial and Financial [Member]
Allowance for credit losses:
Beginning balance, prior to adoption of ASC 326	4,885	4,988	5,826
Charge-offs	(136)	(1,425)	(981)
Recoveries	1,103	670	646
Credit loss (benefit) expense	(1,881)	652	(503)
Ending balance	4,269	4,885	4,988
Ending balance, individually evaluated for credit losses	189	411	792
Ending balance, collectively evaluated for credit losses	4,080	4,474	4,196
Financing Receivable, before Allowance for Credit Loss and Fee	222,002	286,242
Loan balances:
Ending balance	222,002	286,242	221,323
Ending balance, individually evaluated for credit losses	2,062	2,191	2,742
Ending balance, collectively evaluated for credit losses	219,940	284,051	218,581
Allowance for credit losses on off-balance sheet credit exposures	1,118			0
Off-Balance Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal)	(467)
off-balance sheet, allowance for credit loss, (charge-offs)/Net Recoveries	0
Commercial and Financial [Member] | Cumulative Effect, Period Of Adoption, Adjustment
Allowance for credit losses:
Beginning balance, prior to adoption of ASC 326	298
Ending balance		298
Loan balances:
Allowance for credit losses on off-balance sheet credit exposures	1,585
Real Estate: Construction and land development [Member]
Allowance for credit losses:
Beginning balance, prior to adoption of ASC 326	2,319	2,599	3,292
Charge-offs	(3)	(43)	(45)
Recoveries	94	118	8
Credit loss (benefit) expense	(437)	(355)	(656)
Ending balance	2,300	2,319	2,599
Ending balance, individually evaluated for credit losses	124	7	0
Ending balance, collectively evaluated for credit losses	2,176	2,312	2,599
Loan balances:
Ending balance	207,507	183,030	188,619
Ending balance, individually evaluated for credit losses	603	1,266	421
Ending balance, collectively evaluated for credit losses	206,904	181,764	188,198
Allowance for credit losses on off-balance sheet credit exposures	849			0
Off-Balance Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal)	113
off-balance sheet, allowance for credit loss, (charge-offs)/Net Recoveries	0
Real Estate: Construction and land development [Member] | Cumulative Effect, Period Of Adoption, Adjustment
Allowance for credit losses:
Beginning balance, prior to adoption of ASC 326	327
Ending balance		327
Loan balances:
Allowance for credit losses on off-balance sheet credit exposures	736
Real Estate: Mortgage, farmland [Member]
Allowance for credit losses:
Beginning balance, prior to adoption of ASC 326	4,173	3,950	3,972
Charge-offs	(1)	(1)	(6)
Recoveries	25	10	5
Credit loss (benefit) expense	(1,527)	214	(21)
Ending balance	3,433	4,173	3,950
Ending balance, individually evaluated for credit losses	0	0	0
Ending balance, collectively evaluated for credit losses	3,433	4,173	3,950
Financing Receivable, before Allowance for Credit Loss and Fee	232,744	247,142
Loan balances:
Ending balance	232,744	247,142	242,730
Ending balance, individually evaluated for credit losses	1,277	2,061	4,081
Ending balance, collectively evaluated for credit losses	231,467	245,081	238,649
Allowance for credit losses on off-balance sheet credit exposures	113			0
Off-Balance Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal)	(67)
off-balance sheet, allowance for credit loss, (charge-offs)/Net Recoveries	0
Real Estate: Mortgage, farmland [Member] | Cumulative Effect, Period Of Adoption, Adjustment
Allowance for credit losses:
Beginning balance, prior to adoption of ASC 326	763
Ending balance		763
Loan balances:
Allowance for credit losses on off-balance sheet credit exposures	180
Real Estate: Mortgage, 1 to 4 family [Member]
Allowance for credit losses:
Beginning balance, prior to adoption of ASC 326	12,368	10,638	12,516
Charge-offs	(482)	(738)	(896)
Recoveries	964	784	700
Credit loss (benefit) expense	(1,874)	1,684	(1,682)
Ending balance	11,498	12,368	10,638
Ending balance, individually evaluated for credit losses	49	93	111
Ending balance, collectively evaluated for credit losses	11,449	12,275	10,527
Loan balances:
Ending balance	1,023,906	1,019,922	1,059,969
Ending balance, individually evaluated for credit losses	6,187	7,417	8,670
Ending balance, collectively evaluated for credit losses	1,017,719	1,012,505	1,051,299
Allowance for credit losses on off-balance sheet credit exposures	794			0
Off-Balance Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal)	323
off-balance sheet, allowance for credit loss, (charge-offs)/Net Recoveries	0
Real Estate: Mortgage, 1 to 4 family [Member] | Cumulative Effect, Period Of Adoption, Adjustment
Allowance for credit losses:
Beginning balance, prior to adoption of ASC 326	522
Ending balance		522
Loan balances:
Allowance for credit losses on off-balance sheet credit exposures	471
Real Estate: Mortgage, multi-family and commercial [Member]
Allowance for credit losses:
Beginning balance, prior to adoption of ASC 326	9,415	7,859	8,165
Charge-offs	(265)	(291)	(341)
Recoveries	263	49	180
Credit loss (benefit) expense	(311)	1,798	(145)
Ending balance	10,498	9,415	7,859
Ending balance, individually evaluated for credit losses	1	14	1
Ending balance, collectively evaluated for credit losses	10,497	9,401	7,858
Loan balances:
Ending balance	784,169	791,153	752,942
Ending balance, individually evaluated for credit losses	5,696	6,200	3,188
Ending balance, collectively evaluated for credit losses	778,473	784,953	749,754
Allowance for credit losses on off-balance sheet credit exposures	559			0
Off-Balance Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal)	347
off-balance sheet, allowance for credit loss, (charge-offs)/Net Recoveries	0
Real Estate: Mortgage, multi-family and commercial [Member] | Cumulative Effect, Period Of Adoption, Adjustment
Allowance for credit losses:
Beginning balance, prior to adoption of ASC 326	1,396
Ending balance		1,396
Loan balances:
Allowance for credit losses on off-balance sheet credit exposures	212
Others [Member]
Allowance for credit losses:
Beginning balance, prior to adoption of ASC 326	1,402	1,326	1,250
Charge-offs	(323)	(381)	(434)
Recoveries	152	180	165
Credit loss (benefit) expense	212	277	345
Ending balance	1,211	1,402	1,326
Ending balance, individually evaluated for credit losses	20	51	93
Ending balance, collectively evaluated for credit losses	1,191	1,351	1,233
Loan balances:
Ending balance	82,972	87,813	82,204
Ending balance, individually evaluated for credit losses	20	51	93
Ending balance, collectively evaluated for credit losses	82,952	87,762	$ 82,111
Allowance for credit losses on off-balance sheet credit exposures	34			$ 0
Off-Balance Sheet, Credit Loss, Liability, Credit Loss Expense (Reversal)	19
off-balance sheet, allowance for credit loss, (charge-offs)/Net Recoveries	0
Others [Member] | Cumulative Effect, Period Of Adoption, Adjustment
Allowance for credit losses:
Beginning balance, prior to adoption of ASC 326	(232)
Ending balance		$ (232)
Loan balances:
Allowance for credit losses on off-balance sheet credit exposures	$ 15

Loans - Credit Quality Indicato

Loans - Credit Quality Indicators (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	$ 2,660,532	$ 2,711,082	$ 2,639,104
Financing Receivable, before Allowance for Credit Loss and Fee	2,660,233	2,710,144
Agricultural [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	23,275
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	13,481
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	3,395
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	2,591
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	626
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	345
Financing Receivable, Revolving	63,220
Financing Receivable, before Allowance for Credit Loss	106,933	94,842	91,317
Financing Receivable, before Allowance for Credit Loss and Fee	106,933	94,842
Commercial and Financial [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	79,683
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	36,555
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	13,003
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	6,150
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	2,904
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	2,245
Financing Receivable, Revolving	81,462
Financing Receivable, before Allowance for Credit Loss	222,002	286,242	221,323
Financing Receivable, before Allowance for Credit Loss and Fee	222,002	286,242
Real Estate: Construction, 1 to 4 family residential [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	9,087
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	94
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	71,305
Financing Receivable, before Allowance for Credit Loss	80,486	71,117
Financing Receivable, before Allowance for Credit Loss and Fee	80,486	71,117
Real Estate: Construction, land development and commercial [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	44,489
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	6,399
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	2,556
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	301
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	1,451
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	267
Financing Receivable, Revolving	71,558
Financing Receivable, before Allowance for Credit Loss	127,021	111,913
Financing Receivable, before Allowance for Credit Loss and Fee	127,021	111,913
Real Estate: Mortgage, farmland [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	83,312
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	71,152
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	12,766
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	14,826
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	15,209
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	17,564
Financing Receivable, Revolving	17,915
Financing Receivable, before Allowance for Credit Loss	232,744	247,142	$ 242,730
Financing Receivable, before Allowance for Credit Loss and Fee	232,744	247,142
Real Estate: Mortgage, 1 to 4 family first liens [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	271,633
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	241,007
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	79,642
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	77,761
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	73,046
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	151,468
Financing Receivable, Revolving	15,007
Financing Receivable, before Allowance for Credit Loss	909,564	892,089
Financing Receivable, before Allowance for Credit Loss and Fee	909,564	892,089
Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	14,383
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	12,671
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	6,134
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	8,171
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	5,594
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	7,025
Financing Receivable, Revolving	60,364
Financing Receivable, before Allowance for Credit Loss	114,342	127,833
Financing Receivable, before Allowance for Credit Loss and Fee	114,342	127,833
Real Estate: Mortgage, multi-family [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	165,576
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	145,082
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	16,186
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	2,030
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	1,692
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	31,793
Financing Receivable, Revolving	20,433
Financing Receivable, before Allowance for Credit Loss	382,792	374,014
Financing Receivable, before Allowance for Credit Loss and Fee	382,792	374,014
Real Estate: Mortgage, commercial [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	121,763
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	158,497
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	21,572
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	15,857
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	20,422
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	33,733
Financing Receivable, Revolving	29,533
Financing Receivable, before Allowance for Credit Loss	401,377	417,139
Financing Receivable, before Allowance for Credit Loss and Fee	401,377	417,139
Loans to individuals [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	12,411
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	5,822
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	2,335
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	1,038
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	150
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	10,870
Financing Receivable, Revolving	61
Financing Receivable, before Allowance for Credit Loss	32,687	31,325
Financing Receivable, before Allowance for Credit Loss and Fee	32,687	31,325
Obligations of state and political subdivisions [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	1,009
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	4,951
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	1,754
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	955
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	11,557
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	20,659
Financing Receivable, Revolving	9,400
Financing Receivable, before Allowance for Credit Loss	50,285	56,488
Financing Receivable, before Allowance for Credit Loss and Fee	50,285	56,488
Excellent [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, before Allowance for Credit Loss		69,568
Excellent [Member] | Agricultural [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	762
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	213
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	30
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	10
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	2,312
Financing Receivable, before Allowance for Credit Loss	3,327
Financing Receivable, before Allowance for Credit Loss and Fee		3,761
Excellent [Member] | Commercial and Financial [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	965
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	924
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	4
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	235
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	31
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	3,391
Financing Receivable, before Allowance for Credit Loss	5,550
Financing Receivable, before Allowance for Credit Loss and Fee		9,024
Excellent [Member] | Real Estate: Construction, 1 to 4 family residential [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	0
Financing Receivable, before Allowance for Credit Loss	0
Financing Receivable, before Allowance for Credit Loss and Fee		0
Excellent [Member] | Real Estate: Construction, land development and commercial [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	5,079
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	143
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	4
Financing Receivable, Revolving	0
Financing Receivable, before Allowance for Credit Loss	5,226	227
Excellent [Member] | Real Estate: Mortgage, farmland [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	3,568
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	124
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	60
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	80
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	41
Financing Receivable, Revolving	134
Financing Receivable, before Allowance for Credit Loss	4,007
Financing Receivable, before Allowance for Credit Loss and Fee		5,706
Excellent [Member] | Real Estate: Mortgage, 1 to 4 family first liens [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	462
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	914
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	427
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	19
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	149
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	404
Financing Receivable, Revolving	1
Financing Receivable, before Allowance for Credit Loss	2,376
Financing Receivable, before Allowance for Credit Loss and Fee		2,303
Excellent [Member] | Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	13
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	6
Financing Receivable, before Allowance for Credit Loss	19
Financing Receivable, before Allowance for Credit Loss and Fee		204
Excellent [Member] | Real Estate: Mortgage, multi-family [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	2,539
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	4,513
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	701
Financing Receivable, Revolving	0
Financing Receivable, before Allowance for Credit Loss	7,753	14,650
Excellent [Member] | Real Estate: Mortgage, commercial [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	597
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	16,781
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	3,313
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	350
Financing Receivable, Revolving	1
Financing Receivable, before Allowance for Credit Loss	21,042	26,940
Excellent [Member] | Loans to individuals [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	0
Financing Receivable, before Allowance for Credit Loss	0	1
Excellent [Member] | Obligations of state and political subdivisions [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	6,076
Financing Receivable, Revolving	0
Financing Receivable, before Allowance for Credit Loss	6,076	6,752
Good [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, before Allowance for Credit Loss		359,578
Good [Member] | Agricultural [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	1,799
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	1,767
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	603
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	46
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	52
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	26
Financing Receivable, Revolving	7,593
Financing Receivable, before Allowance for Credit Loss	11,886
Financing Receivable, before Allowance for Credit Loss and Fee		12,369
Good [Member] | Commercial and Financial [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	13,722
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	5,570
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	1,105
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	1,086
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	276
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	1,494
Financing Receivable, Revolving	20,709
Financing Receivable, before Allowance for Credit Loss	43,962
Financing Receivable, before Allowance for Credit Loss and Fee		62,310
Good [Member] | Real Estate: Construction, 1 to 4 family residential [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	212
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	18,755
Financing Receivable, before Allowance for Credit Loss	18,967
Financing Receivable, before Allowance for Credit Loss and Fee		13,675
Good [Member] | Real Estate: Construction, land development and commercial [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	3,294
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	1,200
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	153
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	242
Financing Receivable, Revolving	12,678
Financing Receivable, before Allowance for Credit Loss	17,567	15,187
Good [Member] | Real Estate: Mortgage, farmland [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	17,827
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	14,308
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	2,144
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	2,460
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	5,932
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	3,929
Financing Receivable, Revolving	3,844
Financing Receivable, before Allowance for Credit Loss	50,444
Financing Receivable, before Allowance for Credit Loss and Fee		41,878
Good [Member] | Real Estate: Mortgage, 1 to 4 family first liens [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	9,598
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	12,300
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	3,124
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	3,443
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	3,091
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	10,943
Financing Receivable, Revolving	2,496
Financing Receivable, before Allowance for Credit Loss	44,995
Financing Receivable, before Allowance for Credit Loss and Fee		47,233
Good [Member] | Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	193
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	611
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	96
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	108
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	482
Financing Receivable, Revolving	1,374
Financing Receivable, before Allowance for Credit Loss	2,864
Financing Receivable, before Allowance for Credit Loss and Fee		3,707
Good [Member] | Real Estate: Mortgage, multi-family [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	16,931
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	35,396
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	1,555
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	9,289
Financing Receivable, Revolving	0
Financing Receivable, before Allowance for Credit Loss	63,171	57,281
Good [Member] | Real Estate: Mortgage, commercial [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	20,143
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	36,773
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	2,619
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	1,356
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	3,811
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	7,085
Financing Receivable, Revolving	9,812
Financing Receivable, before Allowance for Credit Loss	81,599	92,699
Good [Member] | Loans to individuals [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	67
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	21
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	5
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	1
Financing Receivable, before Allowance for Credit Loss	94	145
Good [Member] | Obligations of state and political subdivisions [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	1,984
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	9,051
Financing Receivable, Revolving	0
Financing Receivable, before Allowance for Credit Loss	11,035	13,094
Satisfactory [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, before Allowance for Credit Loss		1,690,006
Satisfactory [Member] | Agricultural [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	10,335
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	6,404
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	1,476
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	1,770
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	403
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	66
Financing Receivable, Revolving	26,285
Financing Receivable, before Allowance for Credit Loss	46,739
Financing Receivable, before Allowance for Credit Loss and Fee		42,015
Satisfactory [Member] | Commercial and Financial [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	44,964
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	20,847
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	7,684
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	3,582
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	2,106
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	331
Financing Receivable, Revolving	41,832
Financing Receivable, before Allowance for Credit Loss	121,346
Financing Receivable, before Allowance for Credit Loss and Fee		144,999
Satisfactory [Member] | Real Estate: Construction, 1 to 4 family residential [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	7,457
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	94
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	42,988
Financing Receivable, before Allowance for Credit Loss	50,539
Financing Receivable, before Allowance for Credit Loss and Fee		41,616
Satisfactory [Member] | Real Estate: Construction, land development and commercial [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	22,907
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	4,354
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	2,356
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	263
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	1,081
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	21
Financing Receivable, Revolving	40,048
Financing Receivable, before Allowance for Credit Loss	71,030	64,301
Satisfactory [Member] | Real Estate: Mortgage, farmland [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	51,639
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	35,616
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	4,689
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	8,358
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	6,745
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	8,339
Financing Receivable, Revolving	8,242
Financing Receivable, before Allowance for Credit Loss	123,628
Financing Receivable, before Allowance for Credit Loss and Fee		129,210
Satisfactory [Member] | Real Estate: Mortgage, 1 to 4 family first liens [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	233,412
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	189,247
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	69,037
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	65,201
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	60,906
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	118,608
Financing Receivable, Revolving	8,443
Financing Receivable, before Allowance for Credit Loss	744,854
Financing Receivable, before Allowance for Credit Loss and Fee		701,273
Satisfactory [Member] | Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	13,684
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	10,116
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	5,854
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	7,309
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	5,230
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	6,053
Financing Receivable, Revolving	55,496
Financing Receivable, before Allowance for Credit Loss	103,742
Financing Receivable, before Allowance for Credit Loss and Fee		115,731
Satisfactory [Member] | Real Estate: Mortgage, multi-family [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	107,192
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	69,287
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	13,635
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	2,030
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	1,561
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	14,660
Financing Receivable, Revolving	14,764
Financing Receivable, before Allowance for Credit Loss	223,129	197,493
Satisfactory [Member] | Real Estate: Mortgage, commercial [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	75,040
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	52,653
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	14,727
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	12,091
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	9,707
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	17,398
Financing Receivable, Revolving	16,333
Financing Receivable, before Allowance for Credit Loss	197,949	196,310
Satisfactory [Member] | Loans to individuals [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	12,162
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	5,606
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	2,212
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	967
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	141
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	10,867
Financing Receivable, Revolving	57
Financing Receivable, before Allowance for Credit Loss	32,012	30,487
Satisfactory [Member] | Obligations of state and political subdivisions [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	1,009
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	2,034
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	1,551
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	706
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	11,557
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	3,634
Financing Receivable, Revolving	9,400
Financing Receivable, before Allowance for Credit Loss	29,891	26,571
Monitor [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, before Allowance for Credit Loss		461,913
Monitor [Member] | Agricultural [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	8,125
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	5,017
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	998
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	765
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	164
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	253
Financing Receivable, Revolving	23,995
Financing Receivable, before Allowance for Credit Loss	39,317
Financing Receivable, before Allowance for Credit Loss and Fee		29,381
Monitor [Member] | Commercial and Financial [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	18,337
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	8,019
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	3,591
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	1,123
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	297
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	416
Financing Receivable, Revolving	13,368
Financing Receivable, before Allowance for Credit Loss	45,151
Financing Receivable, before Allowance for Credit Loss and Fee		56,439
Monitor [Member] | Real Estate: Construction, 1 to 4 family residential [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	1,307
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	9,187
Financing Receivable, before Allowance for Credit Loss	10,494
Financing Receivable, before Allowance for Credit Loss and Fee		13,654
Monitor [Member] | Real Estate: Construction, land development and commercial [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	5,694
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	547
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	7
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	38
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	74
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	18,832
Financing Receivable, before Allowance for Credit Loss	25,192	23,368
Monitor [Member] | Real Estate: Mortgage, farmland [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	8,532
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	16,925
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	5,518
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	3,901
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	2,154
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	4,866
Financing Receivable, Revolving	5,695
Financing Receivable, before Allowance for Credit Loss	47,591
Financing Receivable, before Allowance for Credit Loss and Fee		61,298
Monitor [Member] | Real Estate: Mortgage, 1 to 4 family first liens [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	24,908
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	33,863
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	5,038
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	6,527
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	7,273
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	12,203
Financing Receivable, Revolving	4,066
Financing Receivable, before Allowance for Credit Loss	93,878
Financing Receivable, before Allowance for Credit Loss and Fee		114,207
Monitor [Member] | Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	326
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	1,233
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	70
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	365
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	140
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	281
Financing Receivable, Revolving	2,801
Financing Receivable, before Allowance for Credit Loss	5,216
Financing Receivable, before Allowance for Credit Loss and Fee		5,153
Monitor [Member] | Real Estate: Mortgage, multi-family [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	26,088
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	35,886
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	176
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	131
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	1,584
Financing Receivable, Revolving	5,669
Financing Receivable, before Allowance for Credit Loss	69,534	70,885
Monitor [Member] | Real Estate: Mortgage, commercial [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	18,664
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	49,774
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	3,923
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	2,202
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	3,037
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	8,461
Financing Receivable, Revolving	3,387
Financing Receivable, before Allowance for Credit Loss	89,448	77,125
Monitor [Member] | Loans to individuals [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	200
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	160
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	15
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	46
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	3
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	1
Financing Receivable, before Allowance for Credit Loss	425	479
Monitor [Member] | Obligations of state and political subdivisions [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	933
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	203
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	249
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	1,898
Financing Receivable, Revolving	0
Financing Receivable, before Allowance for Credit Loss	3,283	9,924
Special Mention [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, before Allowance for Credit Loss		78,045
Special Mention [Member] | Agricultural [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	1,662
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	11
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	85
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	7
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	2,807
Financing Receivable, before Allowance for Credit Loss	4,572
Financing Receivable, before Allowance for Credit Loss and Fee		5,143
Special Mention [Member] | Commercial and Financial [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	603
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	525
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	353
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	70
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	102
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	4
Financing Receivable, Revolving	174
Financing Receivable, before Allowance for Credit Loss	1,831
Financing Receivable, before Allowance for Credit Loss and Fee		8,258
Special Mention [Member] | Real Estate: Construction, 1 to 4 family residential [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	374
Financing Receivable, before Allowance for Credit Loss	374
Financing Receivable, before Allowance for Credit Loss and Fee		1,857
Special Mention [Member] | Real Estate: Construction, land development and commercial [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	0
Financing Receivable, before Allowance for Credit Loss	0	7,137
Special Mention [Member] | Real Estate: Mortgage, farmland [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	4,031
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	288
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	298
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	190
Financing Receivable, Revolving	0
Financing Receivable, before Allowance for Credit Loss	4,807
Financing Receivable, before Allowance for Credit Loss and Fee		6,074
Special Mention [Member] | Real Estate: Mortgage, 1 to 4 family first liens [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	1,682
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	3,422
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	887
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	962
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	1,051
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	3,168
Financing Receivable, Revolving	0
Financing Receivable, before Allowance for Credit Loss	11,172
Financing Receivable, before Allowance for Credit Loss and Fee		12,890
Special Mention [Member] | Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	103
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	489
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	35
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	56
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	42
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	110
Financing Receivable, Revolving	142
Financing Receivable, before Allowance for Credit Loss	977
Financing Receivable, before Allowance for Credit Loss and Fee		1,307
Special Mention [Member] | Real Estate: Mortgage, multi-family [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	640
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	820
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	0
Financing Receivable, before Allowance for Credit Loss	1,460	15,374
Special Mention [Member] | Real Estate: Mortgage, commercial [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	5,791
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	795
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	303
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	554
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	337
Financing Receivable, Revolving	0
Financing Receivable, before Allowance for Credit Loss	7,780	19,731
Special Mention [Member] | Loans to individuals [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	37
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	32
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	29
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	4
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	1
Financing Receivable, before Allowance for Credit Loss	103	127
Special Mention [Member] | Obligations of state and political subdivisions [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	0
Financing Receivable, before Allowance for Credit Loss	0	147
Substandard [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, before Allowance for Credit Loss		51,034
Substandard [Member] | Agricultural [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	592
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	69
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	203
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	228
Financing Receivable, before Allowance for Credit Loss	1,092
Financing Receivable, before Allowance for Credit Loss and Fee		2,173
Substandard [Member] | Commercial and Financial [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	1,092
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	670
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	266
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	54
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	92
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	1,988
Financing Receivable, before Allowance for Credit Loss	4,162
Financing Receivable, before Allowance for Credit Loss and Fee		5,212
Substandard [Member] | Real Estate: Construction, 1 to 4 family residential [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	111
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	1
Financing Receivable, before Allowance for Credit Loss	112
Financing Receivable, before Allowance for Credit Loss and Fee		315
Substandard [Member] | Real Estate: Construction, land development and commercial [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	7,515
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	298
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	193
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	0
Financing Receivable, before Allowance for Credit Loss	8,006	1,693
Substandard [Member] | Real Estate: Mortgage, farmland [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	1,283
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	447
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	291
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	47
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	199
Financing Receivable, Revolving	0
Financing Receivable, before Allowance for Credit Loss	2,267
Financing Receivable, before Allowance for Credit Loss and Fee		2,976
Substandard [Member] | Real Estate: Mortgage, 1 to 4 family first liens [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	1,571
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	1,261
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	1,129
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	1,609
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	576
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	6,142
Financing Receivable, Revolving	1
Financing Receivable, before Allowance for Credit Loss	12,289
Financing Receivable, before Allowance for Credit Loss and Fee		14,183
Substandard [Member] | Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	77
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	209
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	79
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	441
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	74
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	99
Financing Receivable, Revolving	545
Financing Receivable, before Allowance for Credit Loss	1,524
Financing Receivable, before Allowance for Credit Loss and Fee		1,731
Substandard [Member] | Real Estate: Mortgage, multi-family [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	12,186
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	5,559
Financing Receivable, Revolving	0
Financing Receivable, before Allowance for Credit Loss	17,745	18,331
Substandard [Member] | Real Estate: Mortgage, commercial [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	1,528
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	1,721
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	208
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	102
Financing Receivable, Revolving	0
Financing Receivable, before Allowance for Credit Loss	3,559	4,334
Substandard [Member] | Loans to individuals [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	12
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	24
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	12
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	1
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	3
Financing Receivable, Revolving	1
Financing Receivable, before Allowance for Credit Loss	53	86
Substandard [Member] | Obligations of state and political subdivisions [Member]
Summary of credit quality indicators by type of loans [Abstract]
Financing Receivable, Year One, Originated, Current Fiscal Year	0
Financing Receivable, Year Two, Originated, Fiscal Year before Current Fiscal Year	0
Financing Receivable, Year Three, Originated, Two Years before Current Fiscal Year	0
Financing Receivable, Year Four, Originated, Three Years before Current Fiscal Year	0
Financing Receivable, Year Five, Originated, Four Years before Current Fiscal Year	0
Financing Receivable, Originated, More than Five Years before Current Fiscal Year	0
Financing Receivable, Revolving	0
Financing Receivable, before Allowance for Credit Loss	$ 0	$ 0

Loans - Past Due Receivables (D

Loans - Past Due Receivables (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	$ 2,660,532	$ 2,711,082	$ 2,639,104
Accruing Loans Past Due 90 Days or More	201	1,056
Financing Receivable, before Allowance for Credit Loss and Fee	2,660,233	2,710,144
Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	106,933	94,842	91,317
Accruing Loans Past Due 90 Days or More	6	111
Financing Receivable, before Allowance for Credit Loss and Fee	106,933	94,842
Commercial and financial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	222,002	286,242	221,323
Accruing Loans Past Due 90 Days or More	91	20
Financing Receivable, before Allowance for Credit Loss and Fee	222,002	286,242
Construction, 1 to 4 family residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	80,486	71,117
Accruing Loans Past Due 90 Days or More	0	536
Financing Receivable, before Allowance for Credit Loss and Fee	80,486	71,117
Construction, land development and commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	127,021	111,913
Accruing Loans Past Due 90 Days or More	0	0
Financing Receivable, before Allowance for Credit Loss and Fee	127,021	111,913
Mortgage, farmland [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	232,744	247,142	$ 242,730
Accruing Loans Past Due 90 Days or More	0	0
Financing Receivable, before Allowance for Credit Loss and Fee	232,744	247,142
Mortgage, 1 to 4 family first liens [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	909,564	892,089
Accruing Loans Past Due 90 Days or More	104	342
Financing Receivable, before Allowance for Credit Loss and Fee	909,564	892,089
Mortgage, 1 to 4 family junior liens [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	114,342	127,833
Accruing Loans Past Due 90 Days or More	0	47
Financing Receivable, before Allowance for Credit Loss and Fee	114,342	127,833
Mortgage, multi-family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	382,792	374,014
Accruing Loans Past Due 90 Days or More	0	0
Financing Receivable, before Allowance for Credit Loss and Fee	382,792	374,014
Mortgage, commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	401,377	417,139
Accruing Loans Past Due 90 Days or More	0	0
Financing Receivable, before Allowance for Credit Loss and Fee	401,377	417,139
Loans to individuals [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	32,687	31,325
Accruing Loans Past Due 90 Days or More	0	0
Financing Receivable, before Allowance for Credit Loss and Fee	32,687	31,325
Obligations of state and political subdivisions [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	50,285	56,488
Accruing Loans Past Due 90 Days or More	0	0
Financing Receivable, before Allowance for Credit Loss and Fee	50,285	56,488
30 - 59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	8,322	8,180
30 - 59 Days Past Due | Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	41	438
30 - 59 Days Past Due | Commercial and financial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	300	867
30 - 59 Days Past Due | Construction, 1 to 4 family residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	276	190
30 - 59 Days Past Due | Construction, land development and commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	194	0
30 - 59 Days Past Due | Mortgage, farmland [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	503	279
30 - 59 Days Past Due | Mortgage, 1 to 4 family first liens [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	5,085	4,969
30 - 59 Days Past Due | Mortgage, 1 to 4 family junior liens [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	246	436
30 - 59 Days Past Due | Mortgage, multi-family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	640	0
30 - 59 Days Past Due | Mortgage, commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	466	783
30 - 59 Days Past Due | Loans to individuals [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	177	218
30 - 59 Days Past Due | Obligations of state and political subdivisions [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	394	0
60 - 89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	1,896	1,645
60 - 89 Days Past Due | Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
60 - 89 Days Past Due | Commercial and financial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	537	195
60 - 89 Days Past Due | Construction, 1 to 4 family residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
60 - 89 Days Past Due | Construction, land development and commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	66	0
60 - 89 Days Past Due | Mortgage, farmland [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	362	28
60 - 89 Days Past Due | Mortgage, 1 to 4 family first liens [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	864	1,342
60 - 89 Days Past Due | Mortgage, 1 to 4 family junior liens [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	41	21
60 - 89 Days Past Due | Mortgage, multi-family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
60 - 89 Days Past Due | Mortgage, commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
60 - 89 Days Past Due | Loans to individuals [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	26	59
60 - 89 Days Past Due | Obligations of state and political subdivisions [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
90 Days or More Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	4,222	4,411
90 Days or More Past Due | Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	219	629
90 Days or More Past Due | Commercial and financial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	468	140
90 Days or More Past Due | Construction, 1 to 4 family residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	536
90 Days or More Past Due | Construction, land development and commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	96	0
90 Days or More Past Due | Mortgage, farmland [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
90 Days or More Past Due | Mortgage, 1 to 4 family first liens [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	2,481	2,486
90 Days or More Past Due | Mortgage, 1 to 4 family junior liens [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	124	155
90 Days or More Past Due | Mortgage, multi-family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
90 Days or More Past Due | Mortgage, commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	829	461
90 Days or More Past Due | Loans to individuals [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	5	4
90 Days or More Past Due | Obligations of state and political subdivisions [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Total Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	14,440	14,236
Total Past Due | Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	260	1,067
Total Past Due | Commercial and financial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	1,305	1,202
Total Past Due | Construction, 1 to 4 family residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	276	726
Total Past Due | Construction, land development and commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	356	0
Total Past Due | Mortgage, farmland [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	865	307
Total Past Due | Mortgage, 1 to 4 family first liens [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	8,430	8,797
Total Past Due | Mortgage, 1 to 4 family junior liens [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	411	612
Total Past Due | Mortgage, multi-family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	640	0
Total Past Due | Mortgage, commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	1,295	1,244
Total Past Due | Loans to individuals [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	208	281
Total Past Due | Obligations of state and political subdivisions [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	394	0
Financial Asset, Not Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	2,645,793	2,695,908
Financial Asset, Not Past Due | Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	106,673	93,775
Financial Asset, Not Past Due | Commercial and financial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	220,697	285,040
Financial Asset, Not Past Due | Construction, 1 to 4 family residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	80,210	70,391
Financial Asset, Not Past Due | Construction, land development and commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	126,665	111,913
Financial Asset, Not Past Due | Mortgage, farmland [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	231,879	246,835
Financial Asset, Not Past Due | Mortgage, 1 to 4 family first liens [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	901,134	883,292
Financial Asset, Not Past Due | Mortgage, 1 to 4 family junior liens [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	113,931	127,221
Financial Asset, Not Past Due | Mortgage, multi-family [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	382,152	374,014
Financial Asset, Not Past Due | Mortgage, commercial [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	400,082	415,895
Financial Asset, Not Past Due | Loans to individuals [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	32,479	31,044
Financial Asset, Not Past Due | Obligations of state and political subdivisions [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable, before Allowance for Credit Loss	$ 49,891	$ 56,488

Loans - Narrative (Details)

Loans - Narrative (Details)	12 Months Ended
	Dec. 31, 2021USD ($)loancontract	Dec. 31, 2020USD ($)contractloan
Receivables [Abstract]
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loan	0	0
Accruing loans past due 90 days or more increased	$ (860,000)
Accruing loans past due 90 days or more percentage of total loans (in hundredths)	0.01%	0.04%
Average 90 days or more past due loan balance	$ 30,000	$ 90,000
Percentages of impaired loans to loans held for investment (in hundredths)	0.63%	0.76%
Increase in nonaccrual loans	$ 360,000
Increase (Decrease) Accruing Loans Past days or More Financing Receivable Unpaid Principal Balance	$ (860,000)
Prior period within which impairment is being measured	1 year
Number of period within which average appraisals obtained	1 month
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable Modifications Number Of Contracts During Period | contract	7	23
COVID-19 related
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable, Modifications, Principal Deferred, Number Of Contracts | loan	16	13
Financing Receivable, Modifications, Principal Deferred	$ 9,400,000	$ 9,400,000
Financing Receivable, Modifications, Payment Deferrals, Total Loans, Percent		14.82%
Financing Receivable, Modifications, Payment Deferrals At Period End, Total Loans, Percent	0.12%	1.20%
Commercial and Financial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Financing Receivable Modifications Number Of Contracts During Period | contract	0	7
Small Business Administration SBA, CARES Act, Paycheck Protection Program | Commercial and Financial [Member]
Financing Receivable, Allowance for Credit Losses [Line Items]
Loans and receivable	$ 5,340,000	$ 86,500,000
Interest and fee income, Loans and Leases, PPP Loan fees recognized in income	5,810,000	2,880,000
Payment for (Proceeds from) Loans and Leases, Payment of PPP loans forgiven	$ 140,100,000	$ 40,400,000

Loans - Impaired Financing Rece

Loans - Impaired Financing Receivable Loan Type (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021		Jan. 01, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Summary of certain impaired loan information [Abstract]
Non-accrual loans	$ 8,491	[1]		$ 8,849
Interest income recognized on non-accrual	0
Accruing loans past due 90 days or more	201			1,056
TDR loans	7,921			10,251
Financing Receivable, before Allowance for Credit Loss	2,660,532			2,711,082	$ 2,639,104
Estimated increase to allowance for credit losses for loans	35,470		$ 37,070	37,070	33,760	$ 37,810
Real Estate
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	16,468,000
Accounts Receivable
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	0
Equipment
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	165,000
Other Collateral
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	0
Real Estate, Accounts Receivable, Equipment, And Other Collateral
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	16,633,000
Estimated increase to allowance for credit losses for loans	384,000
Agricultural [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	221	[1]		1,252
Interest income recognized on non-accrual	0
Accruing loans past due 90 days or more	6			111
TDR loans	374			85
Financing Receivable, before Allowance for Credit Loss	106,933			94,842	91,317
Estimated increase to allowance for credit losses for loans	2,261			2,508	2,400	2,789
Agricultural [Member] | Real Estate
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	734,000
Agricultural [Member] | Accounts Receivable
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	0
Agricultural [Member] | Equipment
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	54,000
Agricultural [Member] | Other Collateral
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	0
Agricultural [Member] | Real Estate, Accounts Receivable, Equipment, And Other Collateral
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	788,000
Estimated increase to allowance for credit losses for loans	1,000
Commercial and financial [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	707	[1]		479
Interest income recognized on non-accrual	0
Accruing loans past due 90 days or more	91			20
TDR loans	1,085			1,263
Financing Receivable, before Allowance for Credit Loss	222,002			286,242	221,323
Estimated increase to allowance for credit losses for loans	4,269			4,885	4,988	5,826
Commercial and financial [Member] | Real Estate
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	1,951,000
Commercial and financial [Member] | Accounts Receivable
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	0
Commercial and financial [Member] | Equipment
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	111,000
Commercial and financial [Member] | Other Collateral
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	0
Commercial and financial [Member] | Real Estate, Accounts Receivable, Equipment, And Other Collateral
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	2,062,000
Estimated increase to allowance for credit losses for loans	189,000
Construction, 1 to 4 family residential [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	111	[1]		315
Interest income recognized on non-accrual	0
Accruing loans past due 90 days or more	0			536
TDR loans	0			0
Financing Receivable, before Allowance for Credit Loss	80,486			71,117
Construction, 1 to 4 family residential [Member] | Real Estate
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	111,000
Construction, 1 to 4 family residential [Member] | Accounts Receivable
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	0
Construction, 1 to 4 family residential [Member] | Equipment
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	0
Construction, 1 to 4 family residential [Member] | Other Collateral
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	0
Construction, 1 to 4 family residential [Member] | Real Estate, Accounts Receivable, Equipment, And Other Collateral
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	111,000
Estimated increase to allowance for credit losses for loans	111,000
Construction, land development and commercial [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	290	[1]		204
Interest income recognized on non-accrual	0
Accruing loans past due 90 days or more	0			0
TDR loans	202			211
Financing Receivable, before Allowance for Credit Loss	127,021			111,913
Construction, land development and commercial [Member] | Real Estate
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	492,000
Construction, land development and commercial [Member] | Accounts Receivable
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	0
Construction, land development and commercial [Member] | Equipment
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	0
Construction, land development and commercial [Member] | Other Collateral
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	0
Construction, land development and commercial [Member] | Real Estate, Accounts Receivable, Equipment, And Other Collateral
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	492,000
Estimated increase to allowance for credit losses for loans	13,000
Mortgage, farmland [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	251	[1]		446
Interest income recognized on non-accrual	0
Accruing loans past due 90 days or more	0			0
TDR loans	1,206			1,616
Financing Receivable, before Allowance for Credit Loss	232,744			247,142	242,730
Estimated increase to allowance for credit losses for loans	3,433			4,173	$ 3,950	$ 3,972
Mortgage, farmland [Member] | Real Estate
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	1,277,000
Mortgage, farmland [Member] | Accounts Receivable
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	0
Mortgage, farmland [Member] | Equipment
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	0
Mortgage, farmland [Member] | Other Collateral
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	0
Mortgage, farmland [Member] | Real Estate, Accounts Receivable, Equipment, And Other Collateral
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	1,277,000
Estimated increase to allowance for credit losses for loans	0
Mortgage, 1 to 4 family first liens [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	4,685	[1]		4,331
Interest income recognized on non-accrual	0
Accruing loans past due 90 days or more	104			342
TDR loans	1,364			1,751
Financing Receivable, before Allowance for Credit Loss	909,564			892,089
Mortgage, 1 to 4 family first liens [Member] | Real Estate
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	5,967,000
Mortgage, 1 to 4 family first liens [Member] | Accounts Receivable
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	0
Mortgage, 1 to 4 family first liens [Member] | Equipment
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	0
Mortgage, 1 to 4 family first liens [Member] | Other Collateral
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	0
Mortgage, 1 to 4 family first liens [Member] | Real Estate, Accounts Receivable, Equipment, And Other Collateral
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	5,967,000
Estimated increase to allowance for credit losses for loans	31,000
Mortgage, 1 to 4 family junior liens [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	200	[1]		193
Interest income recognized on non-accrual	0
Accruing loans past due 90 days or more	0			47
TDR loans	20			20
Financing Receivable, before Allowance for Credit Loss	114,342			127,833
Mortgage, 1 to 4 family junior liens [Member] | Real Estate
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	220,000
Mortgage, 1 to 4 family junior liens [Member] | Accounts Receivable
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	0
Mortgage, 1 to 4 family junior liens [Member] | Equipment
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	0
Mortgage, 1 to 4 family junior liens [Member] | Other Collateral
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	0
Mortgage, 1 to 4 family junior liens [Member] | Real Estate, Accounts Receivable, Equipment, And Other Collateral
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	220,000
Estimated increase to allowance for credit losses for loans	18,000
Mortgage, multi-family [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	0	[1]		79
Interest income recognized on non-accrual	0
Accruing loans past due 90 days or more	0			0
TDR loans	1,460			1,695
Financing Receivable, before Allowance for Credit Loss	382,792			374,014
Mortgage, multi-family [Member] | Real Estate
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	1,460,000
Mortgage, multi-family [Member] | Accounts Receivable
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	0
Mortgage, multi-family [Member] | Equipment
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	0
Mortgage, multi-family [Member] | Other Collateral
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	0
Mortgage, multi-family [Member] | Real Estate, Accounts Receivable, Equipment, And Other Collateral
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	1,460,000
Estimated increase to allowance for credit losses for loans	0
Mortgage, commercial [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	2,026	[1]		1,550
Interest income recognized on non-accrual	0
Accruing loans past due 90 days or more	0			0
TDR loans	2,210			3,610
Financing Receivable, before Allowance for Credit Loss	401,377			417,139
Mortgage, commercial [Member] | Real Estate
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	4,236,000
Mortgage, commercial [Member] | Accounts Receivable
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	0
Mortgage, commercial [Member] | Equipment
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	0
Mortgage, commercial [Member] | Other Collateral
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	0
Mortgage, commercial [Member] | Real Estate, Accounts Receivable, Equipment, And Other Collateral
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	4,236,000
Estimated increase to allowance for credit losses for loans	1,000
Loans to individuals [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	0	[1]		0
Interest income recognized on non-accrual	0
Accruing loans past due 90 days or more	0			0
TDR loans	0			0
Financing Receivable, before Allowance for Credit Loss	32,687			31,325
Loans to individuals [Member] | Real Estate
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	20,000
Loans to individuals [Member] | Accounts Receivable
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	0
Loans to individuals [Member] | Equipment
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	0
Loans to individuals [Member] | Other Collateral
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	0
Loans to individuals [Member] | Real Estate, Accounts Receivable, Equipment, And Other Collateral
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	20,000
Estimated increase to allowance for credit losses for loans	20,000
Troubled Debt Restructuring [Member]
Summary of certain impaired loan information [Abstract]
TDR Loans included within nonaccrual loans	2,280			2,970
Obligations of state and political subdivisions [Member]
Summary of certain impaired loan information [Abstract]
Accruing loans past due 90 days or more	0			0
Financing Receivable, before Allowance for Credit Loss	50,285			$ 56,488
Obligations of state and political subdivisions [Member] | Real Estate
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	0
Obligations of state and political subdivisions [Member] | Accounts Receivable
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	0
Obligations of state and political subdivisions [Member] | Equipment
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	0
Obligations of state and political subdivisions [Member] | Other Collateral
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	0
Obligations of state and political subdivisions [Member] | Real Estate, Accounts Receivable, Equipment, And Other Collateral
Summary of certain impaired loan information [Abstract]
Financing Receivable, before Allowance for Credit Loss	0
Estimated increase to allowance for credit losses for loans	$ 0
[1]	There were $2.28 million and $2.97 million of TDR loans included within nonaccrual loans as of December 31, 2021 and 2020, respectively.

Loans - Troubled Debt Restructu

Loans - Troubled Debt Restructuring (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)contractloan	Dec. 31, 2020USD ($)contractloan
Summary of information for TDR loans [Abstract]
Number of contracts | contract	50	63
Recorded investment	$ 10,197	$ 13,225
Commitments outstanding	$ 60	$ 39
Summary of TDR loans were modified [Abstract]
Number of Contracts | contract	7	23
Pre-modification recorded investment	$ 841	$ 4,654
Post-modification recorded investment	$ 841	$ 4,654
Financing Receivable, Modifications, Subsequent Default, Number of Contracts | loan	0	0
financing receivable, troubled debt restructuring, allowance	$ 10	$ 250
COVID-19 related
Summary of TDR loans were modified [Abstract]
Financing Receivable, Modifications, Payment Deferrals At Period End, Total Loans, Percent	0.12%	1.20%
Agricultural [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	4	6
Recorded investment	$ 586	$ 1,028
Commitments outstanding	$ 0	$ 0
Summary of TDR loans were modified [Abstract]
Number of Contracts | contract	1	2
Pre-modification recorded investment	$ 178	$ 93
Post-modification recorded investment	$ 178	$ 93
Commercial and financial [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	12	17
Recorded investment	$ 1,116	$ 1,743
Commitments outstanding	$ 60	$ 35
Summary of TDR loans were modified [Abstract]
Number of Contracts | contract	0	7
Pre-modification recorded investment	$ 0	$ 623
Post-modification recorded investment	$ 0	$ 623
Construction, 1 to 4 family residential [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	0	0
Recorded investment	$ 0	$ 0
Commitments outstanding	$ 0	$ 0
Summary of TDR loans were modified [Abstract]
Number of Contracts | contract	0	0
Pre-modification recorded investment	$ 0	$ 0
Post-modification recorded investment	$ 0	$ 0
Construction, land development and commercial [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	1	1
Recorded investment	$ 202	$ 211
Commitments outstanding	$ 0	$ 4
Summary of TDR loans were modified [Abstract]
Number of Contracts | contract	0	0
Pre-modification recorded investment	$ 0	$ 0
Post-modification recorded investment	$ 0	$ 0
Mortgage, farmland [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	5	6
Recorded investment	$ 1,409	$ 2,009
Commitments outstanding	$ 0	$ 0
Summary of TDR loans were modified [Abstract]
Number of Contracts | contract	1	0
Pre-modification recorded investment	$ 319	$ 0
Post-modification recorded investment	$ 319	$ 0
Mortgage, 1 to 4 family first liens [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	14	17
Recorded investment	$ 1,441	$ 1,898
Commitments outstanding	$ 0	$ 0
Summary of TDR loans were modified [Abstract]
Number of Contracts | contract	4	6
Pre-modification recorded investment	$ 112	$ 283
Post-modification recorded investment	$ 112	$ 283
Mortgage, 1 to 4 family junior liens [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	1	1
Recorded investment	$ 20	$ 20
Commitments outstanding	$ 0	$ 0
Summary of TDR loans were modified [Abstract]
Number of Contracts | contract	0	1
Pre-modification recorded investment	$ 0	$ 20
Post-modification recorded investment	$ 0	$ 20
Mortgage, multi-family [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	2	2
Recorded investment	$ 1,460	$ 1,695
Commitments outstanding	$ 0	$ 0
Summary of TDR loans were modified [Abstract]
Number of Contracts | contract	0	0
Pre-modification recorded investment	$ 0	$ 0
Post-modification recorded investment	$ 0	$ 0
Mortgage, commercial [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	11	13
Recorded investment	$ 3,963	$ 4,621
Commitments outstanding	$ 0	$ 0
Summary of TDR loans were modified [Abstract]
Number of Contracts | contract	1	7
Pre-modification recorded investment	$ 232	$ 3,635
Post-modification recorded investment	$ 232	$ 3,635
Loans to individuals [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	0	0
Recorded investment	$ 0	$ 0
Commitments outstanding	$ 0	$ 0
Summary of TDR loans were modified [Abstract]
Number of Contracts | contract	0	0
Pre-modification recorded investment	$ 0	$ 0
Post-modification recorded investment	$ 0	$ 0

Loans - Impaired Financing Re_2

Loans - Impaired Financing Receivables Activity (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2021USD ($)loan	Dec. 31, 2020USD ($)loan	Dec. 31, 2019USD ($)
Recorded Investment
With no related allowance recorded		$ 17,906	$ 17,713
With a related allowance recorded		2,823	3,212
Total		20,729	20,925
Unpaid Principal Balance
With no related allowance recorded		23,459	22,527
With a related allowance recorded		2,954	3,570
Total		26,413	26,097
Related Allowance
With no related allowance recorded		0	0
With an related allowance recorded		662	1,084
Total		662	1,084
Average Recorded Investment
With no related allowance recorded		20,297	18,035
With an related allowance recorded		2,845	3,489
Total		23,142	21,524
Interest Income Recognized
With no related allowance recorded		556	436
With an related allowance recorded		98	141
Total		$ 654	577
financing receivable, allowance for credit loss, change due to economic factors	$ 2,460
Financing Receivable, Allowance for Credit Losses, change due to loan volume	370
Financing Receivable, Allowance for Credit Losses, change in prepayment and curtailment rates	30
Financing Receivable, Allowance for Credit Losses, change due to historical loss rates	2,000
Financing Receivable, Allowance for Credit Losses, change due to individually analyzed loans reserve	250
Financing Receivable, Allowance for Credit Losses, change due to qualitative factors	760
Accruing loans past due 90 days or more increased	(860)
Increase (Decrease) Accruing Loans Past days or More Financing Receivable Unpaid Principal Balance	860
Increase (Decrease) in TDR Loans	$ 2,330
Percentages of impaired loans to loans held for investment (in hundredths)	0.63%	0.76%
COVID-19 related
Interest Income Recognized
Financing Receivable, Modifications, Principal Deferred, Number Of Contracts | loan	16	13
Financing Receivable, Modifications, Principal Deferred	$ 9,400	$ 9,400
Agricultural Sector
Interest Income Recognized
Accruing loans past due 90 days or more increased	550
Agricultural [Member]
Recorded Investment
With no related allowance recorded		1,337	1,596
With a related allowance recorded		206	134
Total		1,543	1,730
Unpaid Principal Balance
With no related allowance recorded		1,928	2,157
With a related allowance recorded		206	134
Total		2,134	2,291
Related Allowance
With no related allowance recorded		0	0
With an related allowance recorded		86	87
Total		86	87
Average Recorded Investment
With no related allowance recorded		1,518	1,785
With an related allowance recorded		141	287
Total		1,659	2,072
Interest Income Recognized
With no related allowance recorded		24	37
With an related allowance recorded		14	17
Total		38	54
Commercial and financial [Member]
Recorded Investment
With no related allowance recorded		1,520	1,340
With a related allowance recorded		671	1,402
Total		2,191	2,742
Unpaid Principal Balance
With no related allowance recorded		2,907	2,220
With a related allowance recorded		724	1,539
Total		3,631	3,759
Related Allowance
With no related allowance recorded		0	0
With an related allowance recorded		411	792
Total		411	792
Average Recorded Investment
With no related allowance recorded		2,054	1,617
With an related allowance recorded		755	1,510
Total		2,809	3,127
Interest Income Recognized
With no related allowance recorded		85	64
With an related allowance recorded		27	83
Total		112	147
Construction, 1 to 4 family residential [Member]
Recorded Investment
With no related allowance recorded		315	101
With a related allowance recorded		536	0
Total		851	101
Unpaid Principal Balance
With no related allowance recorded		337	144
With a related allowance recorded		536	0
Total		873	144
Related Allowance
With no related allowance recorded		0	0
With an related allowance recorded		7	0
Total		7	0
Average Recorded Investment
With no related allowance recorded		475	106
With an related allowance recorded		486	0
Total		961	106
Interest Income Recognized
With no related allowance recorded		0	0
With an related allowance recorded		24	0
Total		24	0
Construction, land development and commercial [Member]
Recorded Investment
With no related allowance recorded		415	320
With a related allowance recorded		0	0
Total		415	320
Unpaid Principal Balance
With no related allowance recorded		421	336
With a related allowance recorded		0	0
Total		421	336
Related Allowance
With no related allowance recorded		0	0
With an related allowance recorded		0	0
Total		0	0
Average Recorded Investment
With no related allowance recorded		420	324
With an related allowance recorded		0	0
Total		420	324
Interest Income Recognized
With no related allowance recorded		13	18
With an related allowance recorded		0	0
Total		13	18
Mortgage, farmland [Member]
Recorded Investment
With no related allowance recorded		2,061	4,081
With a related allowance recorded		0	0
Total		2,061	4,081
Unpaid Principal Balance
With no related allowance recorded		2,598	4,613
With a related allowance recorded		0	0
Total		2,598	4,613
Related Allowance
With no related allowance recorded		0	0
With an related allowance recorded		0	0
Total		0	0
Average Recorded Investment
With no related allowance recorded		3,008	4,144
With an related allowance recorded		0	0
Total		3,008	4,144
Interest Income Recognized
With no related allowance recorded		120	157
With an related allowance recorded		0	0
Total		120	157
Mortgage, 1 to 4 family first liens [Member]
Recorded Investment
With no related allowance recorded		6,253	7,157
With a related allowance recorded		924	1,280
Total		7,177	8,437
Unpaid Principal Balance
With no related allowance recorded		8,013	9,015
With a related allowance recorded		975	1,501
Total		8,988	10,516
Related Allowance
With no related allowance recorded		0	0
With an related allowance recorded		56	64
Total		56	64
Average Recorded Investment
With no related allowance recorded		6,578	6,822
With an related allowance recorded		955	1,318
Total		7,533	8,140
Interest Income Recognized
With no related allowance recorded		108	51
With an related allowance recorded		25	29
Total		133	80
Mortgage, 1 to 4 family junior liens [Member]
Recorded Investment
With no related allowance recorded		108	0
With a related allowance recorded		132	233
Total		240	233
Unpaid Principal Balance
With no related allowance recorded		350	246
With a related allowance recorded		158	233
Total		508	479
Related Allowance
With no related allowance recorded		0	0
With an related allowance recorded		37	47
Total		37	47
Average Recorded Investment
With no related allowance recorded		134	0
With an related allowance recorded		149	239
Total		283	239
Interest Income Recognized
With no related allowance recorded		0	0
With an related allowance recorded		2	6
Total		2	6
Mortgage, multi-family [Member]
Recorded Investment
With no related allowance recorded		1,773	1,816
With a related allowance recorded		0	0
Total		1,773	1,816
Unpaid Principal Balance
With no related allowance recorded		1,898	1,930
With a related allowance recorded		0	0
Total		1,898	1,930
Related Allowance
With no related allowance recorded		0	0
With an related allowance recorded		0	0
Total		0	0
Average Recorded Investment
With no related allowance recorded		1,795	1,873
With an related allowance recorded		0	0
Total		1,795	1,873
Interest Income Recognized
With no related allowance recorded		80	83
With an related allowance recorded		0	0
Total		80	83
Real Estate: Mortgage, commercial [Member]
Recorded Investment
With no related allowance recorded		4,124	1,302
With a related allowance recorded		303	70
Total		4,427	1,372
Unpaid Principal Balance
With no related allowance recorded		4,960	1,852
With a related allowance recorded		304	70
Total		5,264	1,922
Related Allowance
With no related allowance recorded		0	0
With an related allowance recorded		14	1
Total		14	1
Average Recorded Investment
With no related allowance recorded		4,315	1,364
With an related allowance recorded		306	73
Total		4,621	1,437
Interest Income Recognized
With no related allowance recorded		126	26
With an related allowance recorded		3	4
Total		129	30
Loans to individuals [Member]
Recorded Investment
With no related allowance recorded		0	0
With a related allowance recorded		51	93
Total		51	93
Unpaid Principal Balance
With no related allowance recorded		47	14
With a related allowance recorded		51	93
Total		98	107
Related Allowance
With no related allowance recorded		0	0
With an related allowance recorded		51	93
Total		51	93
Average Recorded Investment
With no related allowance recorded		0	0
With an related allowance recorded		53	62
Total		53	62
Interest Income Recognized
With no related allowance recorded		0	0
With an related allowance recorded		3	2
Total		$ 3	$ 2
Collateral-Dependent Loans
Interest Income Recognized
Accruing loans past due 90 days or more increased	$ 4,100

Property and Equipment (Details

Property and Equipment (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Gross	$ 90,296	$ 88,831
Less accumulated depreciation	56,006	52,953
Net	34,290	35,878
Land [Member]
Property, Plant and Equipment [Line Items]
Gross	11,266	11,266
Building and improvements [Member]
Property, Plant and Equipment [Line Items]
Gross	38,041	37,512
Furniture and equipment [Member]
Property, Plant and Equipment [Line Items]
Gross	$ 40,989	$ 40,053

Leases - Narrative (Details)

Leases - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Lessee, Lease, Description [Line Items]
Lease term, option to extend (up to)	10 years
Lease term, option to terminate (within)	1 year
Lease, rent expense	$ 590	$ 560
Operating lease costs	510	470
Short-term lease costs	30	30
Variable lease costs	50	60
Operating lease liabilities	510	470
Right of use assets obtained in exchange for operating lease obligations	0	$ 48	$ 3,581
Total operating lease liabilities	$ 2,533
Lease term for operating leases	9 years 11 months 8 days	10 years 3 months 7 days
Weighted average discount rate for operating leases	3.49%	3.45%
Other Assets [Member]
Lessee, Lease, Description [Line Items]
Operating lease right-of-use assets included in other assets	$ 2,470	$ 2,860
Other Liabilities [Member]
Lessee, Lease, Description [Line Items]
Total operating lease liabilities	$ 2,530	$ 2,910
Minimum [Member]
Lessee, Lease, Description [Line Items]
Lease term	1 year
Maximum [Member]
Lessee, Lease, Description [Line Items]
Lease term	15 years

Leases - Schedule of maturities

Leases - Schedule of maturities of lease liabilities (Details) $ in Thousands	Dec. 31, 2021USD ($)
Leases [Abstract]
2022	$ 464
2023	317
2024	250
2025	253
2026	257
Thereafter	1,499
Total lease payments	3,040
Less imputed interest	(507)
Total operating lease liabilities	$ 2,533
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Other liabilities

Interest-Bearing Deposits - Sum

Interest-Bearing Deposits - Summary of Deposits (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Interest-bearing Deposit Liabilities [Abstract]
NOW and other demand	$ 964,730	$ 801,550
Savings	1,338,910	1,161,324
Time, $250,000 and over	88,517	114,260
Other time	508,736	583,244
Total deposits	$ 2,900,893	$ 2,660,378

Interest-Bearing Deposits (Narr

Interest-Bearing Deposits (Narrative) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Interest-bearing Deposit Liabilities [Abstract]
Total brokered deposits	$ 51,590	$ 74,080
Average interest rate of brokered deposits	0.36%	0.34%
Brokered deposits included in savings deposits	$ 51,590	$ 74,080

Interest-Bearing Deposits - Tim

Interest-Bearing Deposits - Time Deposits (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Interest-bearing Deposit Liabilities [Abstract]
Due in one year or less	$ 320,764	$ 307,962
Due after one year through two years	174,043	190,763
Due after two years through three years	63,193	150,275
Due after three years through four years	23,108	39,089
Due over four years	16,145	9,415
Time Deposits	$ 597,253	$ 697,504

Federal Home Loan Bank Borrow_3

Federal Home Loan Bank Borrowings (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal home loan bank borrowings	$ 0	$ 105,000
Federal Home Loan Bank Borrowings Due year eight [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal home loan bank borrowings	$ 0
Federal Home Loan Bank Borrowings Due year eight [Member] | Minimum [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Effective interest rates	2.81%
Federal Home Loan Bank Borrowings Due year eight [Member] | Maximum [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Effective interest rates	2.94%
Federal Home Loan Bank Borrowings Due year nine [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal home loan bank borrowings	$ 0	45,000
Federal Home Loan Bank Borrowings Due year nine [Member] | Minimum [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Effective interest rates	2.52%
Federal Home Loan Bank Borrowings Due year nine [Member] | Maximum [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Effective interest rates	2.86%
Federal Home Loan Bank Borrowings Due year ten [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal home loan bank borrowings	$ 0	30,000
Federal Home Loan Bank Borrowings Due year ten [Member] | Minimum [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Effective interest rates	2.76%
Federal Home Loan Bank Borrowings Due year ten [Member] | Maximum [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Effective interest rates	2.95%
Federal Home Loan Bank Borrowings Due thereafter [Member]
Federal Home Loan Bank, Advances, Branch of FHLB Bank [Line Items]
Federal home loan bank borrowings		$ 30,000

Federal Home Loan Bank Borrow_4

Federal Home Loan Bank Borrowings (Narrative) (Details) - USD ($)	Dec. 21, 2021	Dec. 30, 2020	Nov. 09, 2020	Dec. 31, 2021	Dec. 31, 2020
Federal Home Loan Bank, Advances [Line Items]
FHLB, prepayment borrowings due 2025 through 2027	$ 105,000,000	$ 15,000,000
FHLB, prepayment borrowings due 2020			$ 25,000,000
FHLB, prepayment borrowings due 2023		25,000,000
FHLB, prepayment borrowings due 2024		$ 15,000,000
FHLB, prepayment fee				$ 7,690,000	$ 2,530,000
Federal home loan bank stock				4,546,000	8,172,000
Loans receivable 1 to 4 family mortgage loans Pledged As Collateral				0	141,750,000
Loans receivable commercial real estate and multi family mortgage loans pledged as collateral				300,930,000	315,860,000
Loan borrowed against collateral				$ 0	$ 0

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income - Components of AOCI (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Line Items]
Tax effect	$ (491)	$ (2,920)
Net-of-tax amount	1,477	8,782
Net unrealized gain on available-for-sale securities
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), before Tax	1,968	11,702
Net unrealized loss on derivatives used for cash flow hedges
Accumulated Other Comprehensive Income (Loss) [Line Items]
Accumulated Other Comprehensive Income (Loss), before Tax	$ 0	$ 0

Employee Benefit Plans (Narrati

Employee Benefit Plans (Narrative) (Details) - USD ($)	May 14, 2019	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Purchase price, percent of fair market value		90.00%
Percentage of employee cash contributions to ESPP, Minimum		1.00%
Percentage of employee cash contributions to ESPP, Maximum		15.00%
Maximum contribution to ESPP per offering period		$ 9,000
Employee Stock Purchase Plan (ESPP) number of shares purchased		7,334	7,449
Cash contributions to ESOP		$ 1,270,000	$ 1,270,000	$ 1,080,000
Employee Stock Ownership Plan (ESOP), Discretionary Cash Contributions to ESOP Percentage		4.50%	4.50%	4.50%
Percentage of cash contributions to profit sharing		4.50%	4.50%	4.50%
Employer discretionary contribution amount		$ 1,270,000	$ 1,270,000	$ 1,080,000
Employer matching contribution		$ 260,000	260,000	220,000
Maximum number of options and shares granted		250,000
Award expiration period		10 years
Intrinsic Value, option exercised		$ 0	$ 0	$ 60,000
Period of interest rate swap used to calculate expected life of options		10 years
Stock options granted (in shares)		0	0	5,805
Weighted-average fair value of options granted (in dollars per share)				$ 21.31
Stock option outstanding weighted-average exercise price (in dollars per share)		$ 45.92
Stock options outstanding, weighted average remaining contractual life		3 years 5 months 19 days
Share-based Compensation Arrangement by Share-based Payment Award, Compensation Cost		$ 60,000
Unrecognized compensation, stock options, weighted-average period		2 years 4 months 24 days
Number of exercisable stock options (in shares)		7,220
Stock options exercisable, weighted average exercise price (in dollars per share)		$ 33
Number of shares available for stock options (in shares)		208,543
Directors' and officers' rights under the plan vesting period		5 years
Restricted common stock shares subject to forfeiture upon termination		12,800	10,800	7,200
Number of years of employment subject to forfeiture		8 years	8 years	8 years
Employee Stock Option [Member]
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Risk-free interest rate	2.39%
Expected option life	7 years 6 months
Expected volatility	33.00%
Expected dividends	$ 0.0123
Restricted Stock Options [Member]
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Number of restricted shares authorized		24,513	20,427	23,527
Directors' and officers' rights under the plan vesting period		5 years
Expense relating to awards		$ 920,000	$ 950,000	$ 960,000
Executive Officer [Member]
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Deferred compensation liability recorded in other liabilities		1,940,000	3,310,000
Deferred compensation expenses included in salaries and employee benefits expense		$ 250,000	(20,000)	420,000
Executive Officer [Member] | Maximum [Member]
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Percentage of deferment of base compensation		30.00%
Percentage of deferment of bonus		100.00%
Director [Member]
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Deferred compensation liability recorded in other liabilities		$ 4,080,000	3,780,000
Deferred compensation expenses included in other noninterest expense		$ 380,000	$ (90,000)	$ 280,000
Director [Member] | Maximum [Member]
Deferred Compensation Arrangement with Individual, Postretirement Benefits [Line Items]
Percentage of cash contributions to profit sharing		50.00%

Employee Benefit Plans - Shares

Employee Benefit Plans - Shares Held by ESOP (Details) - USD ($)	Dec. 31, 2021	Dec. 31, 2020
Retirement Benefits [Abstract]
Share held by the ESOP (in shares)	735,482	757,262
Fair value per share (in dollars per share)	$ 68	$ 62.50
Maximum cash obligation	$ 50,013,000	$ 47,329,000

Employee Benefit Plans - Summar

Employee Benefit Plans - Summary of Stock Options (Details) - USD ($) $ / shares in Units, $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Number of Shares
Options Outstanding Beginning Balance (in shares)	13,025	13,025	9,020
Granted (in shares)	0	0	5,805
Exercised (in shares)	0	0	(1,800)
Options Outstanding Ending Balance (in shares)	13,025	13,025	13,025	9,020
Weighted- Average Exercise Price
Options Outstanding Weighted Average Exercise Price Beginning Balance (in dollars per share)	$ 45.92	$ 45.92	$ 33.30
Options Outstanding Weighted Average Exercise Price Ending Balance (in dollars per share)	$ 45.92	$ 45.92	$ 45.92	$ 33.30
Weighted-Average Remaining Contractual Term (Years)
Weighted-Average Remaining Contractual Term	3 years 5 months 19 days	4 years 5 months 19 days	5 years 5 months 19 days	3 years 4 months 28 days
Aggregate Intrinsic Value (In Thousands)
Aggregate Intrinsic Value	$ 288	$ 216	$ 248	$ 250

Employee Benefit Plans - Summ_2

Employee Benefit Plans - Summary of Restricted Stock Options (Details) - $ / shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Number of Shares
Options Outstanding Beginning Balance (in shares)	13,025	13,025	9,020
Granted (in shares)	0	0	5,805
Options Outstanding Ending Balance (in shares)	13,025	13,025	13,025
Restricted Stock Options [Member] | 2020 Stock Option and Incentive Plan
Number of Shares
Options Outstanding Beginning Balance (in shares)	231,425
Authorized (in shares)	0
Granted (in shares)	24,513
Forfeitures (in shares)	1,631
Options Outstanding Ending Balance (in shares)	208,543	231,425
Weighted Average Grant Date Fair Value
Weighted Average Grant Date Fair Value, Granted (in dollars per share)	$ 66.01
Weighted Average Grant Date Fair Value, Forfeitures (in dollars per share)	$ 62.81
Restricted Stock Options [Member] | 2010 Stock Option and Incentive Plan
Number of Shares
Options Outstanding Beginning Balance (in shares)	22,864
Authorized (in shares)	0
Granted (in shares)	0
Forfeitures (in shares)	6,452
Options Outstanding Ending Balance (in shares)	29,316	22,864
Weighted Average Grant Date Fair Value
Weighted Average Grant Date Fair Value, Granted (in dollars per share)	$ 0
Weighted Average Grant Date Fair Value, Forfeitures (in dollars per share)	$ 54.61

Employee Benefit Plans - Other

Employee Benefit Plans - Other Pertinent Information Related to Options (Details)	12 Months Ended
	Dec. 31, 2021$ / sharesshares
Defined Benefit Plan Disclosure [Line Items]
Stock option outstanding weighted-average exercise price (in dollars per share) | $ / shares	$ 45.92
Number Outstanding (in shares)	13,025
Remaining Contractual Life	3 years 5 months 19 days
Number of exercisable stock options (in shares)	7,220
Exercise Price 33.00 [Member]
Defined Benefit Plan Disclosure [Line Items]
Stock option outstanding weighted-average exercise price (in dollars per share) | $ / shares	$ 33
Number Outstanding (in shares)	7,220
Remaining Contractual Life	4 months
Number of exercisable stock options (in shares)	7,220
Exercise Price 34.50 [Member]
Defined Benefit Plan Disclosure [Line Items]
Stock option outstanding weighted-average exercise price (in dollars per share) | $ / shares	$ 62
Number Outstanding (in shares)	5,805
Remaining Contractual Life	89 months
Number of exercisable stock options (in shares)	0

Income Taxes - Summary of Incom

Income Taxes - Summary of Income Taxes (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Current:
Federal									$ 10,383	$ 9,124	$ 8,857
State									2,653	2,673	2,391
Deferred:
Federal									757	(417)	1,068
State									214	(103)	233
Total	$ 1,777	$ 3,863	$ 4,008	$ 4,359	$ 2,538	$ 3,392	$ 3,541	$ 1,806	$ 14,007	$ 11,277	$ 12,549

Income Taxes - Deferred Tax Ass

Income Taxes - Deferred Tax Assets and Liabilities (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Deferred income tax assets:
Allowance for credit losses	$ 8,849	$ 9,249
Deferred compensation and unearned restricted stock	2,239	2,401
Allowance for credit losses on off-balance sheet credit exposures	961	0
Accrued expenses	611	589
State net operating loss	1,094	1,011
Gross deferred tax assets	13,754	13,250
Valuation allowance	(1,094)	(1,011)
Deferred tax asset, net of valuation allowance	12,660	12,239
Deferred income tax liabilities:
Property and equipment	1,852	1,941
Unrealized gains on investment securities	491	2,920
Goodwill	407	407
Prepaid expenses	400	431
Other	385	452
Gross deferred tax liabilities	3,535	6,151
Net deferred tax assets	$ 9,125	$ 6,088

Income Taxes - Narrative (Detai

Income Taxes - Narrative (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Operating Loss Carryforwards [Line Items]
Valuation allowance (decrease) increase	$ 83,000	$ 82,000
Unrecognized tax benefits	0	0
Interest or penalties on unrecognized tax benefits	0	$ 0
Anticipated increase in unrecognized tax benefits next twelve months	0
Anticipated decrease in unrecognized tax benefits next twelve months	$ 0
Internal Revenue Service (IRS) [Member]
Operating Loss Carryforwards [Line Items]
Income tax year, under examination	December 31, 2021, 2020, 2019 and 2018
State and Local Jurisdiction [Member]
Operating Loss Carryforwards [Line Items]
Income tax year, under examination	December 31, 2021, 2020, 2019 and 2018

Income Taxes - Summary of Chang

Income Taxes - Summary of Change in Deferred Income Tax (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Income Tax Disclosure [Abstract]
Consolidated statements of income	$ 971	$ (520)	$ 1,301
Consolidated statements of stockholders' equity	(4,008)	2,450	1,550
Net change in deferred income tax	$ (3,037)	$ 1,930	$ 2,851

Income Taxes - Effective Income

Income Taxes - Effective Income Tax Rate Reconciliation (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Reconciliation of effective income tax rate with federal statutory tax rate
Expected tax expense, Amount									$ 13,039	$ 10,484	$ 12,152
Expected tax expense, Percent Of Pretax Income									21.00%	21.00%	20.90%
Tax-exempt interest, Amount									$ (1,176)	$ (1,219)	$ (1,201)
Tax-exempt interest, Percent Of Pretax Income									(1.90%)	(2.40%)	(2.10%)
Interest expense limitation, Amount									$ 50	$ 79	$ 109
Interest expenses limitation, Percent Of Pretax Income									0.10%	0.10%	0.20%
State income taxes, net of federal income tax benefit, Amount									$ 2,265	$ 2,030	$ 2,073
State income taxes, net of federal income tax benefit, Percent Of Pretax Income									3.70%	4.10%	3.50%
Income tax credits, Amount									$ (475)	$ (51)	$ (531)
Income tax credits, Percent Of Pretax Income									(0.80%)	(0.10%)	(0.90%)
Other, Amount									$ 304	$ (46)	$ (53)
Other, Percent Of Pretax Income									0.50%	(0.10%)	0.10%
Total	$ 1,777	$ 3,863	$ 4,008	$ 4,359	$ 2,538	$ 3,392	$ 3,541	$ 1,806	$ 14,007	$ 11,277	$ 12,549
Total, Percent Of Pretax Income									22.60%	22.60%	21.70%

Regulatory Capital Requiremen_3

Regulatory Capital Requirements, Restrictions on Subsidiary Dividends and Cash Restrictions (Details) $ in Thousands	Dec. 31, 2021USD ($)	Dec. 31, 2020USD ($)
Parent Company [Member]
Minimum regulatory requirements [Abstract]
Total risk-based capital, Actual Amount	$ 484,486
Total risk-based capital, Actual Ratio	0.1180
Total risk-based capital, For Capital Adequacy Purposes, Ratio	0.0850
Leverage ratio, Actual Amount		$ 452,123
Leverage ratio, Actual Ratio		0.1191
Leverage ratio, For Capital Adequacy Purposes, Ratio		0.0800
Bank [Member]
Minimum regulatory requirements [Abstract]
Total risk-based capital, Actual Amount	$ 484,429
Total risk-based capital, Actual Ratio	0.1180
Total risk-based capital, For Capital Adequacy Purposes, Ratio	0.0850
Leverage ratio, Actual Amount		$ 453,073
Leverage ratio, Actual Ratio		0.1194
Leverage ratio, For Capital Adequacy Purposes, Ratio		0.0800

Regulatory Capital Requiremen_4

Regulatory Capital Requirements, Restrictions on Subsidiary Dividends and Cash Restrictions (Narrative) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Regulatory Capital Requirements, Restrictions on Subsidiary Dividends and Cash Restrictions [Abstract]
Retained Earnings, available for payment of dividends	$ 135,620
Cash reserve balances	$ 752,990	$ 541,050

Related Party Transactions (Det

Related Party Transactions (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Changes in loans to related parties [Roll Forward]
Balance, beginning	$ 54,053	$ 55,717
Net increase due to change in related parties	735	0
Advances	23,671	14,406
Collections	(25,614)	(16,070)
Balance, ending	52,845	54,053
Related Party Deposits	$ 21,270	$ 13,180

Fair Value Measurements - Carry

Fair Value Measurements - Carrying Value and Estimated Fair Values (Details) - USD ($) $ in Thousands	Dec. 31, 2021		Dec. 31, 2020
Readily Available Market Prices [Member]
Financial instrument assets:
Cash and cash equivalents	$ 781,918	[1]	$ 574,310	[2]
Investment securities	243,925	[1]	148,646	[2]
Loans held for sale	0	[1]	0	[2]
Loans
Agricultural	0	[1]	0	[2]
Commercial and financial	0	[1]	0	[2]
Real estate:
Construction, 1 to 4 family residential	0	[1]	0	[2]
Construction, land development and commercial	0	[1]	0	[2]
Mortgage, farmland	0	[1]	0	[2]
Mortgage, 1 to 4 family first liens	0	[1]	0	[2]
Mortgage, 1 to 4 family junior liens	0	[1]	0	[2]
Mortgage, multi-family	0	[1]	0	[2]
Mortgage, commercial	0	[1]	0	[2]
Loans to individuals	0	[1]	0	[2]
Obligations of state and political subdivisions	0	[1]	0	[2]
Accrued interest receivable	0	[1]	0	[2]
Total financial instrument assets	1,025,843	[1]	722,956	[2]
Deposits
Noninterest-bearing deposits	0	[1]	0	[2]
Interest-bearing deposits	0	[1]	0	[2]
Other borrowings	0
Federal Home Loan Bank borrowings	0	[1]	0	[2]
Accrued interest payable	0	[1]	0	[2]
Total financial instrument liabilities	0	[1]	0	[2]
Financial instrument with off-balance sheet risk:
Loan commitments	0	[1]	0	[2]
Letters of credit	0	[1]	0	[2]
Total financial instrument liabilities with off-balance-sheet risk	0	[1]	0	[2]
Observable Market Prices [Member]
Financial instrument assets:
Cash and cash equivalents	0	[3]	0	[4]
Investment securities	311,975	[3]	267,898	[4]
Loans held for sale	5,716	[3]	43,947	[4]
Loans
Agricultural	0	[3]	0	[4]
Commercial and financial	0	[3]	0	[4]
Real estate:
Construction, 1 to 4 family residential	0	[3]	0	[4]
Construction, land development and commercial	0	[3]	0	[4]
Mortgage, farmland	0	[3]	0	[4]
Mortgage, 1 to 4 family first liens	0	[3]	0	[4]
Mortgage, 1 to 4 family junior liens	0	[3]	0	[4]
Mortgage, multi-family	0	[3]	0	[4]
Mortgage, commercial	0	[3]	0	[4]
Loans to individuals	0	[3]	0	[4]
Obligations of state and political subdivisions	0	[3]	0	[4]
Accrued interest receivable	11,437	[3]	12,177	[4]
Total financial instrument assets	329,128	[3]	324,022	[4]
Deposits
Noninterest-bearing deposits	633,101	[3]	532,190	[4]
Interest-bearing deposits	2,909,243	[3]	2,673,815	[4]
Other borrowings	249
Federal Home Loan Bank borrowings	0	[3]	115,259	[4]
Accrued interest payable	1,165	[3]	1,733	[4]
Total financial instrument liabilities	3,543,758	[3]	3,322,997	[4]
Financial instrument with off-balance sheet risk:
Loan commitments	0	[3]	0	[4]
Letters of credit	0	[3]	0	[4]
Total financial instrument liabilities with off-balance-sheet risk	0	[3]	0	[4]
Company Determined Market Prices [Member]
Financial instrument assets:
Cash and cash equivalents	0	[5]	0	[6]
Investment securities	0	[5]	0	[6]
Loans held for sale	0	[5]	0	[6]
Loans
Agricultural	103,745	[5]	92,922	[6]
Commercial and financial	216,466	[5]	282,015	[6]
Real estate:
Construction, 1 to 4 family residential	79,311	[5]	70,432	[6]
Construction, land development and commercial	124,466	[5]	110,039	[6]
Mortgage, farmland	228,365	[5]	242,978	[6]
Mortgage, 1 to 4 family first liens	897,255	[5]	890,409	[6]
Mortgage, 1 to 4 family junior liens	110,903	[5]	124,945	[6]
Mortgage, multi-family	378,193	[5]	370,538	[6]
Mortgage, commercial	391,950	[5]	413,409	[6]
Loans to individuals	31,871	[5]	31,164	[6]
Obligations of state and political subdivisions	50,155	[5]	59,300	[6]
Accrued interest receivable	0	[5]	0	[6]
Total financial instrument assets	2,612,680	[5]	2,688,151	[6]
Deposits
Noninterest-bearing deposits	0	[5]	0	[6]
Interest-bearing deposits	0	[5]	0	[6]
Other borrowings	0
Federal Home Loan Bank borrowings	0	[5]	0	[6]
Accrued interest payable	0	[5]	0	[6]
Total financial instrument liabilities	0	[5]	0	[6]
Financial instrument with off-balance sheet risk:
Loan commitments	0	[5]	0	[6]
Letters of credit	0	[5]	0	[6]
Total financial instrument liabilities with off-balance-sheet risk	0	[5]	0	[6]
Carrying Amount [Member]
Financial instrument assets:
Cash and cash equivalents	781,918		574,310
Investment securities	555,900		416,544
Loans held for sale	5,716		43,947
Loans
Agricultural	104,672		92,334
Commercial and financial	217,733		281,357
Real estate:
Construction, 1 to 4 family residential	79,668		70,210
Construction, land development and commercial	125,539		110,501
Mortgage, farmland	229,311		242,969
Mortgage, 1 to 4 family first liens	901,523		882,156
Mortgage, 1 to 4 family junior liens	111,184		126,336
Mortgage, multi-family	379,077		369,552
Mortgage, commercial	394,594		412,186
Loans to individuals	31,916		30,573
Obligations of state and political subdivisions	49,845		55,838
Accrued interest receivable	11,437		12,177
Total financial instrument assets	3,980,033		3,720,990
Deposits
Noninterest-bearing deposits	633,101		532,190
Interest-bearing deposits	2,900,893		2,660,378
Other borrowings	249
Federal Home Loan Bank borrowings	0		105,000
Accrued interest payable	1,165		1,733
Total financial instrument liabilities	3,535,408		3,299,301
Financial instrument with off-balance sheet risk:
Loan commitments	614,324		483,602
Letters of credit	7,179		8,056
Total financial instrument liabilities with off-balance-sheet risk	621,503		491,658
Estimated Fair Value [Member]
Financial instrument assets:
Cash and cash equivalents	781,918		574,310
Investment securities	555,900		416,544
Loans held for sale	5,716		43,947
Loans
Agricultural	103,745		92,922
Commercial and financial	216,466		282,015
Real estate:
Construction, 1 to 4 family residential	79,311		70,432
Construction, land development and commercial	124,466		110,039
Mortgage, farmland	228,365		242,978
Mortgage, 1 to 4 family first liens	897,255		890,409
Mortgage, 1 to 4 family junior liens	110,903		124,945
Mortgage, multi-family	378,193		370,538
Mortgage, commercial	391,950		413,409
Loans to individuals	31,871		31,164
Obligations of state and political subdivisions	50,155		59,300
Accrued interest receivable	11,437		12,177
Total financial instrument assets	3,967,651		3,735,129
Deposits
Noninterest-bearing deposits	633,101		532,190
Interest-bearing deposits	2,909,243		2,673,815
Other borrowings	249
Federal Home Loan Bank borrowings	0		115,259
Accrued interest payable	1,165		1,733
Total financial instrument liabilities	3,543,758		3,322,997
Financial instrument with off-balance sheet risk:
Loan commitments	0		0
Letters of credit	0		0
Total financial instrument liabilities with off-balance-sheet risk	$ 0		$ 0
[1]	Considered Level 1 under Accounting Standards Codification (“ASC”) Topic 820, Fair Value Measurements and Disclosures (“ASC 820”).
[2]	Considered Level 1 under Accounting Standards Codification (“ASC”) Topic 820, Fair Value Measurements and Disclosures (“ASC 820”).
[3]	Considered Level 2 under ASC 820.
[4]	Considered Level 2 under ASC 820.
[5]	Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market.
[6]	Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market

Fair Value Measurements - Asset

Fair Value Measurements - Assets and Liabilities Recurring Basis (Details) - USD ($) $ in Thousands		Dec. 31, 2021	Dec. 31, 2020
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Estimated Fair Value		$ 551,354	$ 408,372
US Treasury Securities [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Estimated Fair Value		243,925	148,646
State and political subdivisions [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Estimated Fair Value		263,516	224,566
Mortgage Backed Securities, Other
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Estimated Fair Value		9,446	0
Recurring Basis [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Total		551,354	408,372
Recurring Basis [Member] | US Treasury Securities [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Estimated Fair Value		243,925	148,646
Recurring Basis [Member] | State and political subdivisions [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Estimated Fair Value		263,516	224,566
Recurring Basis [Member] | Mortgage Backed Securities, Other
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Estimated Fair Value		9,446
Recurring Basis [Member] | Other securities (FHLB, FHLMC and FNMA) [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Estimated Fair Value		34,467	35,160
Recurring Basis [Member] | Readily Available Market Prices [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Total	[1]	243,925	148,646
Recurring Basis [Member] | Readily Available Market Prices [Member] | US Treasury Securities [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Estimated Fair Value	[1]	243,925	148,646
Recurring Basis [Member] | Readily Available Market Prices [Member] | State and political subdivisions [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Estimated Fair Value	[1]	0	0
Recurring Basis [Member] | Readily Available Market Prices [Member] | Mortgage Backed Securities, Other
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Estimated Fair Value		0
Recurring Basis [Member] | Readily Available Market Prices [Member] | Other securities (FHLB, FHLMC and FNMA) [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Estimated Fair Value	[1]	0	0
Recurring Basis [Member] | Observable Market Prices [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Total	[2]	307,429	259,726
Recurring Basis [Member] | Observable Market Prices [Member] | US Treasury Securities [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Estimated Fair Value	[2]	0	0
Recurring Basis [Member] | Observable Market Prices [Member] | State and political subdivisions [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Estimated Fair Value	[2]	263,516	224,566
Recurring Basis [Member] | Observable Market Prices [Member] | Mortgage Backed Securities, Other
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Estimated Fair Value		9,446
Recurring Basis [Member] | Observable Market Prices [Member] | Other securities (FHLB, FHLMC and FNMA) [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Estimated Fair Value	[2]	34,467	35,160
Recurring Basis [Member] | Company Determined Market Prices [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Total	[3]	0	0
Recurring Basis [Member] | Company Determined Market Prices [Member] | US Treasury Securities [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Estimated Fair Value	[3]	0	0
Recurring Basis [Member] | Company Determined Market Prices [Member] | State and political subdivisions [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Estimated Fair Value	[3]	0	0
Recurring Basis [Member] | Company Determined Market Prices [Member] | Mortgage Backed Securities, Other
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Estimated Fair Value		0
Recurring Basis [Member] | Company Determined Market Prices [Member] | Other securities (FHLB, FHLMC and FNMA) [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Estimated Fair Value	[3]	$ 0	$ 0
[1]	Considered Level 1 under ASC 820.
[2]	Considered Level 2 under ASC 820.
[3]	Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market.

Fair Value Measurements - Ass_2

Fair Value Measurements - Assets and Liabilities on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021		Dec. 31, 2020
Readily Available Market Prices [Member]
Loans
Agricultural	$ 0	[1]	$ 0	[2]
Commercial and financial	0	[1]	0	[2]
Real Estate:
Construction, land development and commercial	0	[1]	0	[2]
Mortgage, farmland	0	[1]	0	[2]
Mortgage, 1 to 4 family first liens	0	[1]	0	[2]
Mortgage, 1 to 4 family junior liens	0	[1]	0	[2]
Mortgage, multi-family	0	[1]	0	[2]
Mortgage, commercial	0	[1]	0	[2]
Loans to individuals	0	[1]	0	[2]
Total financial instrument assets	1,025,843	[1]	722,956	[2]
Observable Market Prices [Member]
Loans
Agricultural	0	[3]	0	[4]
Commercial and financial	0	[3]	0	[4]
Real Estate:
Construction, land development and commercial	0	[3]	0	[4]
Mortgage, farmland	0	[3]	0	[4]
Mortgage, 1 to 4 family first liens	0	[3]	0	[4]
Mortgage, 1 to 4 family junior liens	0	[3]	0	[4]
Mortgage, multi-family	0	[3]	0	[4]
Mortgage, commercial	0	[3]	0	[4]
Loans to individuals	0	[3]	0	[4]
Total financial instrument assets	329,128	[3]	324,022	[4]
Company Determined Market Prices [Member]
Loans
Agricultural	103,745	[5]	92,922	[6]
Commercial and financial	216,466	[5]	282,015	[6]
Real Estate:
Construction, land development and commercial	124,466	[5]	110,039	[6]
Mortgage, farmland	228,365	[5]	242,978	[6]
Mortgage, 1 to 4 family first liens	897,255	[5]	890,409	[6]
Mortgage, 1 to 4 family junior liens	110,903	[5]	124,945	[6]
Mortgage, multi-family	378,193	[5]	370,538	[6]
Mortgage, commercial	391,950	[5]	413,409	[6]
Loans to individuals	31,871	[5]	31,164	[6]
Total financial instrument assets	2,612,680	[5]	2,688,151	[6]
Nonrecurring Basis [Member]
Real Estate:
Total financial instrument assets	15,259	[7]	18,157	[8]
Total Losses	476	[7]	906	[8]
Nonrecurring Basis [Member] | Readily Available Market Prices [Member]
Real Estate:
Total financial instrument assets	0	[9]	0	[10]
Nonrecurring Basis [Member] | Observable Market Prices [Member]
Real Estate:
Total financial instrument assets	0	[11]	0	[12]
Nonrecurring Basis [Member] | Company Determined Market Prices [Member]
Real Estate:
Total financial instrument assets	15,259	[13]	18,157	[14]
Agricultural [Member] | Nonrecurring Basis [Member]
Loans
Agricultural	399	[7]	1,081	[8]
Real Estate:
Total Losses	0	[7]	0	[8]
Agricultural [Member] | Nonrecurring Basis [Member] | Readily Available Market Prices [Member]
Loans
Agricultural	0	[7],[9]	0	[8],[10]
Agricultural [Member] | Nonrecurring Basis [Member] | Observable Market Prices [Member]
Loans
Agricultural	0	[7],[11]	0	[8],[12]
Agricultural [Member] | Nonrecurring Basis [Member] | Company Determined Market Prices [Member]
Loans
Agricultural	399	[7],[13]	1,081	[8],[14]
Commercial and financial [Member] | Nonrecurring Basis [Member]
Loans
Commercial and financial	1,527	[7]	1,692	[8]
Real Estate:
Total Losses	0	[7]	385	[8]
Commercial and financial [Member] | Nonrecurring Basis [Member] | Readily Available Market Prices [Member]
Loans
Commercial and financial	0	[7],[9]	0	[8],[10]
Commercial and financial [Member] | Nonrecurring Basis [Member] | Observable Market Prices [Member]
Loans
Commercial and financial	0	[7],[11]	0	[8],[12]
Commercial and financial [Member] | Nonrecurring Basis [Member] | Company Determined Market Prices [Member]
Loans
Commercial and financial	1,527	[7],[13]	1,692	[8],[14]
Construction, 1 to 4 family residential [Member] | Nonrecurring Basis [Member]
Real Estate:
Construction, 1 to 4 family residential	383	[7]	414	[8]
Total Losses	0	[7]	0	[8]
Construction, 1 to 4 family residential [Member] | Nonrecurring Basis [Member] | Readily Available Market Prices [Member]
Real Estate:
Construction, 1 to 4 family residential	0	[7],[9]	0	[8],[10]
Construction, 1 to 4 family residential [Member] | Nonrecurring Basis [Member] | Observable Market Prices [Member]
Real Estate:
Construction, 1 to 4 family residential	0	[7],[11]	0	[8],[12]
Construction, 1 to 4 family residential [Member] | Nonrecurring Basis [Member] | Company Determined Market Prices [Member]
Real Estate:
Construction, 1 to 4 family residential	383	[7],[13]	414	[8],[14]
Construction, land development and commercial [Member] | Nonrecurring Basis [Member]
Real Estate:
Construction, land development and commercial	96	[7]	315	[8]
Total Losses	0	[7]	0	[8]
Construction, land development and commercial [Member] | Nonrecurring Basis [Member] | Readily Available Market Prices [Member]
Real Estate:
Construction, land development and commercial	0	[7],[9]	0	[8],[10]
Construction, land development and commercial [Member] | Nonrecurring Basis [Member] | Observable Market Prices [Member]
Real Estate:
Construction, land development and commercial	0	[7],[11]	0	[8],[12]
Construction, land development and commercial [Member] | Nonrecurring Basis [Member] | Company Determined Market Prices [Member]
Real Estate:
Construction, land development and commercial	96	[7],[13]	315	[8],[14]
Mortgage, farmland [Member] | Nonrecurring Basis [Member]
Real Estate:
Mortgage, farmland	1,114	[7]	1,718	[8]
Total Losses	0	[7]	0	[8]
Mortgage, farmland [Member] | Nonrecurring Basis [Member] | Readily Available Market Prices [Member]
Real Estate:
Mortgage, farmland	0	[7],[9]	0	[8],[10]
Mortgage, farmland [Member] | Nonrecurring Basis [Member] | Observable Market Prices [Member]
Real Estate:
Mortgage, farmland	0	[7],[11]	0	[8],[12]
Mortgage, farmland [Member] | Nonrecurring Basis [Member] | Company Determined Market Prices [Member]
Real Estate:
Mortgage, farmland	1,114	[7],[13]	1,718	[8],[14]
Mortgage, 1 to 4 family first liens [Member] | Nonrecurring Basis [Member]
Real Estate:
Mortgage, 1 to 4 family first liens	5,902	[7]	5,906	[8]
Total Losses	212	[7]	252	[8]
Mortgage, 1 to 4 family first liens [Member] | Nonrecurring Basis [Member] | Readily Available Market Prices [Member]
Real Estate:
Mortgage, 1 to 4 family first liens	0	[7],[9]	0	[8],[10]
Mortgage, 1 to 4 family first liens [Member] | Nonrecurring Basis [Member] | Observable Market Prices [Member]
Real Estate:
Mortgage, 1 to 4 family first liens	0	[7],[11]	0	[8],[12]
Mortgage, 1 to 4 family first liens [Member] | Nonrecurring Basis [Member] | Company Determined Market Prices [Member]
Real Estate:
Mortgage, 1 to 4 family first liens	5,902	[7],[13]	5,906	[8],[14]
Mortgage, 1 to 4 family junior liens [Member] | Nonrecurring Basis [Member]
Real Estate:
Mortgage, 1 to 4 family junior liens	202	[7]	176	[8]
Total Losses	9	[7]	19	[8]
Mortgage, 1 to 4 family junior liens [Member] | Nonrecurring Basis [Member] | Readily Available Market Prices [Member]
Real Estate:
Mortgage, 1 to 4 family junior liens	0	[7],[9]	0	[8],[10]
Mortgage, 1 to 4 family junior liens [Member] | Nonrecurring Basis [Member] | Observable Market Prices [Member]
Real Estate:
Mortgage, 1 to 4 family junior liens	0	[7],[11]	0	[8],[12]
Mortgage, 1 to 4 family junior liens [Member] | Nonrecurring Basis [Member] | Company Determined Market Prices [Member]
Real Estate:
Mortgage, 1 to 4 family junior liens	202	[7],[13]	176	[8],[14]
Mortgage, multi-family [Member] | Nonrecurring Basis [Member]
Real Estate:
Mortgage, multi-family	1,460	[7]	1,773	[8]
Total Losses	0	[7]	0	[8]
Mortgage, multi-family [Member] | Nonrecurring Basis [Member] | Readily Available Market Prices [Member]
Real Estate:
Mortgage, multi-family	0	[7],[9]	0	[8],[10]
Mortgage, multi-family [Member] | Nonrecurring Basis [Member] | Observable Market Prices [Member]
Real Estate:
Mortgage, multi-family	0	[7],[11]	0	[8],[12]
Mortgage, multi-family [Member] | Nonrecurring Basis [Member] | Company Determined Market Prices [Member]
Real Estate:
Mortgage, multi-family	1,460	[7],[13]	1,773	[8],[14]
Real Estate: Mortgage, commercial [Member] | Nonrecurring Basis [Member]
Real Estate:
Mortgage, commercial	4,176	[7]	5,082	[8]
Total Losses	255	[7]	250	[8]
Real Estate: Mortgage, commercial [Member] | Nonrecurring Basis [Member] | Readily Available Market Prices [Member]
Real Estate:
Mortgage, commercial	0	[7],[9]	0	[8],[10]
Real Estate: Mortgage, commercial [Member] | Nonrecurring Basis [Member] | Observable Market Prices [Member]
Real Estate:
Mortgage, commercial	0	[7],[11]	0	[8],[12]
Real Estate: Mortgage, commercial [Member] | Nonrecurring Basis [Member] | Company Determined Market Prices [Member]
Real Estate:
Mortgage, commercial	4,176	[7],[13]	5,082	[8],[14]
Loans to individuals [Member] | Nonrecurring Basis [Member]
Real Estate:
Loans to individuals	0	[7]	0	[8]
Total Losses	0	[7]	0	[8]
Loans to individuals [Member] | Nonrecurring Basis [Member] | Readily Available Market Prices [Member]
Real Estate:
Loans to individuals	0	[7],[9]	0	[8],[10]
Loans to individuals [Member] | Nonrecurring Basis [Member] | Observable Market Prices [Member]
Real Estate:
Loans to individuals	0	[7],[11]	0	[8],[12]
Loans to individuals [Member] | Nonrecurring Basis [Member] | Company Determined Market Prices [Member]
Real Estate:
Loans to individuals	0	[7],[13]	0	[8],[14]
Foreclosed assets [Member] | Nonrecurring Basis [Member]
Real Estate:
Foreclosed assets	0	[15]	0	[16]
Total Losses	0	[15]	0	[16]
Foreclosed assets [Member] | Nonrecurring Basis [Member] | Readily Available Market Prices [Member]
Real Estate:
Foreclosed assets	0	[9],[15]	0	[10],[16]
Foreclosed assets [Member] | Nonrecurring Basis [Member] | Observable Market Prices [Member]
Real Estate:
Foreclosed assets	0	[11],[15]	0	[12],[16]
Foreclosed assets [Member] | Nonrecurring Basis [Member] | Company Determined Market Prices [Member]
Real Estate:
Foreclosed assets	$ 0	[13],[15]	$ 0	[14],[16]
[1]	Considered Level 1 under Accounting Standards Codification (“ASC”) Topic 820, Fair Value Measurements and Disclosures (“ASC 820”).
[2]	Considered Level 1 under Accounting Standards Codification (“ASC”) Topic 820, Fair Value Measurements and Disclosures (“ASC 820”).
[3]	Considered Level 2 under ASC 820.
[4]	Considered Level 2 under ASC 820.
[5]	Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market.
[6]	Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market
[7]	Represents carrying value and related write-downs of loans for which adjustments are based on the value of the collateral.  The carrying value of loans fully charged off is zero.
[8]	Represents carrying value and related write-downs of loans for which adjustments are based on the value of the collateral.  The carrying value of loans fully charged off is zero.
[9]	Considered Level 1 under ASC 820.
[10]	Considered Level 1 under ASC 820.
[11]	Considered Level 2 under ASC 820.
[12]	Considered Level 2 under ASC 820.
[13]	Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market.
[14]	Considered Level 3 under ASC 820 and are based on valuation models that use significant assumptions that are not observable in an active market.
[15]	Represents the fair value and related losses of foreclosed real estate and other collateral owned that were measured at fair value subsequent to their initial classification as foreclosed assets.
[16]	Represents the fair value and related losses of foreclosed real estate and other collateral owned that were measured at fair value subsequent to their initial classification as foreclosed assets.

Parent Company Only Financial_3

Parent Company Only Financial Information - Condensed Balance Sheets (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
ASSETS
Cash and cash equivalents at subsidiary bank	$ 781,918	$ 574,310
Investment in subsidiary bank	551,354	408,372
Other assets	8,799	9,633
Total Assets	4,044,562	3,782,362
LIABILITIES AND STOCKHOLDERS' EQUITY
Liabilities	3,556,099	3,318,957
Stockholders' equity:
Capital stock	0	0
Retained earnings	474,392	439,831
Accumulated other comprehensive gain	1,477	8,782
Treasury stock at cost	(48,344)	(45,441)
Total Stockholders' Equity	488,463	463,405
Total Stockholders' Equity Less Maximum Cash Obligations Related To ESOP Shares	438,450	416,076	$ 375,211	$ 334,882
Total Liabilities & Stockholders' Equity	4,044,562	3,782,362
Parent Company [Member]
ASSETS
Cash and cash equivalents at subsidiary bank	2,176	1,100
Investment in subsidiary bank	488,406	464,355
Other assets	2,067	1,846
Total Assets	492,649	467,301
LIABILITIES AND STOCKHOLDERS' EQUITY
Liabilities	4,186	3,896
Redeemable common stock held by ESOP	50,013	47,329
Stockholders' equity:
Capital stock	60,938	60,233
Retained earnings	474,392	439,831
Accumulated other comprehensive gain	1,477	8,782
Treasury stock at cost	(48,344)	(45,441)
Total Stockholders' Equity	488,463	463,405
Less maximum cash obligation related to ESOP shares	50,013	47,329
Total Stockholders' Equity Less Maximum Cash Obligations Related To ESOP Shares	438,450	416,076
Total Liabilities & Stockholders' Equity	$ 492,649	$ 467,301

Parent Company Only Financial_4

Parent Company Only Financial Information - Condensed Statements of Income (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Condensed Financial Statements, Captions [Line Items]
Income before income tax benefit and equity in undistributed income of subsidiary	$ 7,930	$ 16,988	$ 17,618	$ 19,556	$ 10,969	$ 14,822	$ 15,252	$ 8,881	$ 62,092	$ 49,924	$ 57,867
Income tax benefit	(1,777)	(3,863)	(4,008)	(4,359)	(2,538)	(3,392)	(3,541)	(1,806)	(14,007)	(11,277)	(12,549)
Net income	$ 6,153	$ 13,125	$ 13,610	$ 15,197	$ 8,431	$ 11,430	$ 11,711	$ 7,075	48,085	38,647	45,318
Parent Company [Member]
Condensed Financial Statements, Captions [Line Items]
Dividends received from subsidiary									12,273	14,822	7,657
Other expenses									(836)	(362)	(708)
Income before income tax benefit and equity in undistributed income of subsidiary									11,437	14,460	6,949
Income tax benefit									297	173	271
Total income after tax benefit									11,734	14,633	7,220
Equity in undistributed income of subsidiary									36,351	24,014	38,098
Net income									$ 48,085	$ 38,647	$ 45,318

Parent Company Only Financial_5

Parent Company Only Financial Information - Condensed Statements of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Cash flows from operating activities:
Net income	$ 6,153	$ 13,125	$ 13,610	$ 15,197	$ 8,431	$ 11,430	$ 11,711	$ 7,075	$ 48,085	$ 38,647	$ 45,318
Adjustments to reconcile net income to cash and cash equivalents provided by operating activities:
Share-based compensation									25	25	14
Compensation expensed through issuance of common stock									1,618	1,272	1,133
Forfeiture of common stock									(455)	(257)	(262)
Decrease (increase) in other assets									392	1,228	(2,681)
Net cash and cash equivalents provided by operating activities									85,074	8,146	39,320
Cash Flows from Financing Activities
Issuance of common stock, net of costs									0	5,844	5,026
Stock options exercised									0	0	62
Purchase of treasury stock									(3,569)	(8,550)	(5,534)
Proceeds from the issuance of common stock through the employee stock purchase plan									427	413	434
Dividends paid									(8,773)	(8,325)	(7,657)
Net cash and cash equivalents used by financing activities									224,760	440,586	202,571
Increase in cash and cash equivalents									207,608	332,345	198,660
Cash and cash equivalents:
Beginning of year				574,310				241,965	574,310	241,965	43,305
End of year	781,918				574,310				781,918	574,310	241,965
Noncash financing activities:
Increase (decrease) in maximum cash obligation related to ESOP shares									2,684	(4,497)	2,956
Parent Company [Member]
Cash flows from operating activities:
Net income									48,085	38,647	45,318
Adjustments to reconcile net income to cash and cash equivalents provided by operating activities:
Equity in undistributed income of subsidiary									(36,351)	(24,014)	(38,098)
Share-based compensation									25	25	14
Compensation expensed through issuance of common stock									1,618	1,272	1,133
Forfeiture of common stock									(455)	(257)	(262)
Decrease (increase) in other assets									(221)	(515)	(100)
Increase (decrease) in other liabilities									290	(3,554)	1,036
Net cash and cash equivalents provided by operating activities									12,991	11,604	9,041
Cash Flows from Financing Activities
Issuance of common stock, net of costs									0	5,844	5,026
Stock options exercised									0	0	62
Purchase of treasury stock									(3,569)	(8,550)	(5,534)
Proceeds from the issuance of common stock through the employee stock purchase plan									427	413	434
Capital contribution to subsidiary									0	(5,000)	0
Dividends paid									(8,773)	(8,325)	(7,657)
Net cash and cash equivalents used by financing activities									(11,915)	(15,618)	(7,669)
Increase in cash and cash equivalents									1,076	(4,014)	1,372
Cash and cash equivalents:
Beginning of year				$ 1,100				$ 5,114	1,100	5,114	3,742
End of year	$ 2,176				$ 1,100				2,176	1,100	5,114
Noncash financing activities:
Increase (decrease) in maximum cash obligation related to ESOP shares									$ 2,684	$ (4,497)	$ 2,956

Commitments and Contingencies -

Commitments and Contingencies - Summary of Bank's Commitments (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Home equity loans [Member]
Firm loan commitments and unused portion of lines of credit:
Total financial instrument liabilities with off-balance-sheet risk	$ 78,961	$ 69,974
Credit cards [Member]
Firm loan commitments and unused portion of lines of credit:
Total financial instrument liabilities with off-balance-sheet risk	65,913	60,535
Commercial, real estate and home construction [Member]
Firm loan commitments and unused portion of lines of credit:
Total financial instrument liabilities with off-balance-sheet risk	170,539	118,186
Commercial lines and real estate purchase loans [Member]
Firm loan commitments and unused portion of lines of credit:
Total financial instrument liabilities with off-balance-sheet risk	298,911	234,907
Outstanding letters of credit [Member]
Firm loan commitments and unused portion of lines of credit:
Total financial instrument liabilities with off-balance-sheet risk	$ 7,179	$ 8,056

Commitments and Contingencies_2

Commitments and Contingencies (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Commitments and Contingencies Disclosure [Abstract]
Investment in securities issued by state and political subdivisions within the state of Iowa	$ 98,920,000
Liabilities for potential obligations from standby letters of credit issued	0	$ 0
Property, Plant and Equipment [Line Items]
2022	464,000
2023	317,000
2024	250,000
2025	253,000
2026	257,000
Thereafter	1,499,000
Total lease payments	3,040,000
Total operating lease expense	590,000	560,000
Bank Premises
Property, Plant and Equipment [Line Items]
2022	319,000
2023	316,000
2024	82,000
2025	1,000
2026	1,000
Thereafter	3,000
Total lease payments	722,000
Total operating lease expense	$ 400,000	$ 380,000	$ 400,000

Commitments and Contingencies_3

Commitments and Contingencies - Minimum Future Rental Commitments (Details) $ in Thousands	Dec. 31, 2021USD ($)
Commitments and Contingencies Disclosure [Abstract]
2022	$ 464
2023	317
2024	250
2025	253
2026	257
Thereafter	1,499
Lessee, Operating Lease, Liability, Payments, Due	$ 3,040

Quarterly Results of Operatio_3

Quarterly Results of Operations (unaudited, amounts in thousands, except per share amounts) (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2020	Sep. 30, 2020	Jun. 30, 2020	Mar. 31, 2020	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Quarterly Financial Information Disclosure [Abstract]
Interest income	$ 28,972	$ 31,196	$ 30,794	$ 31,127	$ 32,156	$ 31,675	$ 32,246	$ 32,452	$ 122,089	$ 128,529	$ 132,332
Interest expense	3,963	4,172	4,598	4,894	5,980	6,465	6,645	7,862	17,627	26,952	34,873
Net interest income	25,009	27,024	26,196	26,233	26,176	25,210	25,601	24,590	104,462	101,577	97,459
Credit loss (benefit) expense	(946)	82	(1,659)	(2,984)	(142)	(157)	8	4,649		4,358
Other income	8,200	8,244	7,982	9,038	8,128	7,510	6,531	6,167	33,464	28,336	24,792
Other expense	26,225	18,198	18,219	18,699	23,477	18,055	16,872	17,227	81,341	75,631	67,264
Income before income taxes	7,930	16,988	17,618	19,556	10,969	14,822	15,252	8,881	62,092	49,924	57,867
Income taxes	1,777	3,863	4,008	4,359	2,538	3,392	3,541	1,806	14,007	11,277	12,549
Net income	$ 6,153	$ 13,125	$ 13,610	$ 15,197	$ 8,431	$ 11,430	$ 11,711	$ 7,075	$ 48,085	$ 38,647	$ 45,318
Basic earnings per share (in dollars per share)	$ 0.66	$ 1.41	$ 1.46	$ 1.63	$ 0.90	$ 1.22	$ 1.25	$ 0.75	$ 5.16	$ 4.12	$ 4.85
Diluted earnings per share (in dollars per share)	$ 0.66	$ 1.41	$ 1.46	$ 1.63	$ 0.90	$ 1.22	$ 1.25	$ 0.75	$ 5.16	$ 4.12	$ 4.85

Derivative Financial Instrume_3

Derivative Financial Instruments (Narrative) (Details)	1 Months Ended	12 Months Ended
	Dec. 31, 2020USD ($)derivative	Dec. 31, 2021USD ($)derivative	Nov. 07, 2013USD ($)derivative
Derivatives, Fair Value [Line Items]
Number of derivatives terminated | derivative	1
Collateral required by the bank	$ 0	$ 0
Interest Rate Swap 1 [Member] | Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Notional amount			$ 25,000,000
Interest Rate Swap 2 [Member] | Other Liabilities [Member]
Derivatives, Fair Value [Line Items]
Notional amount			$ 25,000,000
Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Number of interest rate swaps held | derivative	0	0	2
Description of terms		three-month LIBOR
Designated as Hedging Instrument [Member] | Interest Rate Swap 1 [Member] | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Maturity date		Nov. 9, 2020
Designated as Hedging Instrument [Member] | Interest Rate Swap 2 [Member]
Derivatives, Fair Value [Line Items]
Termination fee paid	$ 2,684,000
Designated as Hedging Instrument [Member] | Interest Rate Swap 2 [Member] | Other Assets [Member]
Derivatives, Fair Value [Line Items]
Maturity date		Nov. 7, 2023

Derivative Financial Instrume_4

Derivative Financial Instruments (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Gain (Loss) Recognized in Other Comprehensive Income, Net [Abstract]
Net change in unrealized loss on derivatives	$ 0	$ (335)	$ (753)
Reclassified from AOCI into Income, Amount of Gain (Loss)	0	(2,684)	$ 0
Designated as Hedging Instrument [Member] | Interest Rate Swap 1 [Member] | Interest Expense
Gain (Loss) Recognized in Other Comprehensive Income, Net [Abstract]
Net change in unrealized loss on derivatives		209
Reclassified from AOCI into Income, Amount of Gain (Loss)		0
Designated as Hedging Instrument [Member] | Interest Rate Swap 1 [Member] | Other Income
Gain (Loss) Recognized in Other Comprehensive Income, Net [Abstract]
Recognized in Income on Derivatives, Amount of Gain (Loss)	0	0
Designated as Hedging Instrument [Member] | Interest Rate Swap 2 [Member] | Interest Expense
Gain (Loss) Recognized in Other Comprehensive Income, Net [Abstract]
Net change in unrealized loss on derivatives		(438)
Reclassified from AOCI into Income, Amount of Gain (Loss)		(1,992)
Designated as Hedging Instrument [Member] | Interest Rate Swap 2 [Member] | Other Income
Gain (Loss) Recognized in Other Comprehensive Income, Net [Abstract]
Recognized in Income on Derivatives, Amount of Gain (Loss)	$ 0	$ 0