Hills Bancorporation (HBIA) 10-Q 6 May 22 2022 Q1 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	3 Months Ended
	Mar. 31, 2022	Apr. 30, 2022
Cover [Abstract]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Mar. 31, 2022
Document Transition Report	false
Entity File Number	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 MAIN STREET
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
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
Entity Shell Company	false
Entity Common Stock, Shares Outstanding (in shares)		9,275,988
Entity Central Index Key	0000732417
Current Fiscal Year End Date	--12-31
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q1
Amendment Flag	false

CONSOLIDATED BALANCE SHEETS

CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
ASSETS
Cash and cash equivalents	$ 718,938	$ 781,918
Investment securities available for sale at fair value (amortized cost March 31, 2022 $715,565; December 31, 2021 $549,386)	687,769	551,354
Stock of Federal Home Loan Bank	4,862	4,546
Loans held for sale	4,704	5,716
Loans, net of allowance for credit losses March 31, 2022 $35,850; December 31, 2021 $35,470	2,651,942	2,625,062
Property and equipment, net	33,753	34,290
Tax credit real estate investment	9,882	9,815
Accrued interest receivable	12,946	11,437
Deferred income taxes, net	16,822	9,125
Goodwill	2,500	2,500
Other assets	8,736	8,799
Total Assets	4,152,854	4,044,562
Liabilities
Noninterest-bearing deposits	625,522	633,101
Interest-bearing deposits	3,036,062	2,900,893
Total deposits	3,661,584	3,533,994
Other borrowings	0	249
Accrued interest payable	1,084	1,165
Allowance for credit losses on off-balance sheet credit exposures	4,690	3,850
Other liabilities	19,396	16,841
Total Liabilities	3,686,754	3,556,099
Redeemable Common Stock Held by Employee Stock Ownership Plan (ESOP)	51,939	50,013
STOCKHOLDERS' EQUITY
Common stock, no par value; authorized 20,000,000 shares; issued March 31, 2022 10,331,681 shares; December 31, 2021 10,329,493 shares	0	0
Paid in capital	61,334	60,938
Retained earnings	475,739	474,392
Accumulated other comprehensive (loss) income	(20,861)	1,477
Treasury stock at cost March 31, 2022 1,054,536 shares; December 31, 2021 1,029,853 shares)	(50,112)	(48,344)
Total Stockholders' Equity	466,100	488,463
Less maximum cash obligation related to ESOP shares	51,939	50,013
Total Stockholders' Equity Less Maximum Cash Obligation Related to ESOP Shares	414,161	438,450
Total Liabilities & Stockholders' Equity	$ 4,152,854	$ 4,044,562

CONSOLIDATED BALANCE SHEETS (Pa

CONSOLIDATED BALANCE SHEETS (Parenthetical) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
ASSETS
Investment securities available for sale, amortized cost	$ 715,565	$ 549,386
Loans, allowance for loan losses	$ 35,850	$ 35,470
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)	10,331,681	10,329,493
Treasury stock at cost (in shares)	1,054,536	1,029,853

CONSOLIDATED STATEMENTS OF INCO

CONSOLIDATED STATEMENTS OF INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Interest income:
Loans, including fees	$ 25,765	$ 29,200
Investment securities:
Taxable	1,132	818
Nontaxable	1,004	945
Federal funds sold	335	164
Total interest income	28,236	31,127
Interest expense:
Deposits	3,056	4,153
FHLB borrowings	0	741
Total interest expense	3,056	4,894
Net interest income	25,180	26,233
Credit loss expense (benefit)	1,104	(2,984)
Net interest income after credit loss expense (benefit)	24,076	29,217
Noninterest income:
Net gain on sale of loans	811	3,003
Other noninterest income	518	482
Noninterest income	7,477	9,038
Noninterest expenses:
Salaries and employee benefits	10,396	10,564
Occupancy	1,132	1,138
Furniture and equipment	1,697	1,983
Office supplies and postage	484	454
Advertising and business development	730	535
Outside services	2,950	3,188
FDIC insurance assessment	281	258
Other noninterest expense	405	579
Noninterest expenses	18,075	18,699
Income before income taxes	13,478	19,556
Income taxes	2,826	4,359
Net income	$ 10,652	$ 15,197
Earnings per share:
Basic (in dollars per share)	$ 1.15	$ 1.63
Diluted (in dollars per share)	$ 1.15	$ 1.63
Trust fees
Noninterest income:
Fee income	$ 3,268	$ 3,013
Service charges and fees
Noninterest income:
Fee income	$ 2,880	$ 2,540

CONSOLIDATED STATEMENTS OF COMP

CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 10,652	$ 15,197
Securities:
Net change in unrealized loss on securities available for sale	(29,764)	(3,702)
Income taxes	7,426	924
Other comprehensive loss on securities available for sale	(22,338)	(2,778)
Other comprehensive loss, net of tax	(22,338)	(2,778)
Comprehensive (loss) income	$ (11,686)	$ 12,419

CONSOLIDATED STATEMENTS OF STOC

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) - USD ($) $ in Thousands	Total	Cumulative change in accounting principle (Note 1)	Balance, January 1, 2021 (as adjusted for change in accounting principle)	Paid in Capital	Paid in CapitalBalance, January 1, 2021 (as adjusted for change in accounting principle)	Retained Earnings	Retained EarningsCumulative change in accounting principle (Note 1)	Retained EarningsBalance, January 1, 2021 (as adjusted for change in accounting principle)	Accumulated Other Comprehensive Income (Loss)	Accumulated Other Comprehensive Income (Loss)Balance, January 1, 2021 (as adjusted for change in accounting principle)	Treasury Stock	Treasury StockBalance, January 1, 2021 (as adjusted for change in accounting principle)	Maximum Cash Obligation Related to ESOP Shares	Maximum Cash Obligation Related to ESOP SharesBalance, January 1, 2021 (as adjusted for change in accounting principle)
Beginning 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 657 and 5,339 shares of common stock for 3 months ended March 31, 2021 and 2022, respectively	41			24							17
Issuance 2,018 and 1,797 shares of common stock under the employee stock purchase plan for 3 months ended March 31, 2021 and 2022, respectively	114			114
Unearned restricted stock compensation	251			251
Forfeiture of 300 and 3,219 shares of common stock for 3 months ended March 31, 2021 and 2022, respectively	(17)			(17)
Share-based compensation	6			6
Change related to ESOP shares	(805)												(805)
Net income	$ 15,197					15,197
Common Stock, Dividends, Per Share, Declared	$ 0.94
Cash dividends ($0.94 and $1.00 per share for 3 months ended March 31, 2021 and 2022, respectively)	$ (8,773)					(8,773)
Purchase of 20,852 and 26,412 shares of common stock for 3 months ended March 31, 2021 and 2022, respectively	(1,311)										(1,311)
Other comprehensive income (loss)	(2,778)								(2,778)
Ending Balance at Mar. 31, 2021	413,250			60,611		441,504			6,004		(46,735)		(48,134)
Beginning Balance at Dec. 31, 2021	438,450			60,938		474,392			1,477		(48,344)		(50,013)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Issuance of 657 and 5,339 shares of common stock for 3 months ended March 31, 2021 and 2022, respectively	237			189							48
Issuance 2,018 and 1,797 shares of common stock under the employee stock purchase plan for 3 months ended March 31, 2021 and 2022, respectively	110			110
Unearned restricted stock compensation	266			266
Forfeiture of 300 and 3,219 shares of common stock for 3 months ended March 31, 2021 and 2022, respectively	(175)			(175)
Share-based compensation	6			6
Change related to ESOP shares	(1,926)												(1,926)
Net income	$ 10,652					10,652
Common Stock, Dividends, Per Share, Declared	$ 1
Cash dividends ($0.94 and $1.00 per share for 3 months ended March 31, 2021 and 2022, respectively)	$ (9,305)					(9,305)
Purchase of 20,852 and 26,412 shares of common stock for 3 months ended March 31, 2021 and 2022, respectively	(1,816)										(1,816)
Other comprehensive income (loss)	(22,338)								(22,338)
Ending Balance at Mar. 31, 2022	$ 414,161			$ 61,334		$ 475,739			$ (20,861)		$ (50,112)		$ (51,939)

CONSOLIDATED STATEMENTS OF ST_2

CONSOLIDATED STATEMENTS OF STOCKHOLDERS' EQUITY (Unaudited) (Parenthetical) - $ / shares	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Stockholders' Equity [Abstract]
Issuance of common stock (in shares)	5,339	657
Issuance of common stock purchased under the employee stock purchase plan (in shares)	1,797	2,018
Forfeiture of shares of common stock (in shares)	3,219	300
Cash dividends (in dollars per share)	$ 1	$ 0.94
Purchase of common stock (in shares)	26,412	20,852

CONSOLIDATED STATEMENTS OF CASH

CONSOLIDATED STATEMENTS OF CASH FLOWS (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Cash Flows from Operating Activities
Net income	$ 10,652	$ 15,197
Adjustments to reconcile net income to net cash and cash equivalents provided by operating activities:
Depreciation	696	808
Credit loss expense (benefit)	1,104	(2,984)
Forfeiture of common stock	(175)	(17)
Share-based compensation	6	6
Compensation expensed through issuance of common stock	118	41
Provision for deferred income taxes	(271)	676
Net gain on sale of other real estate owned and other repossessed assets	0	(7)
Increase in accrued interest receivable	(1,509)	(357)
Amortization of premium on investment securities, net	302	264
Decrease in other assets	5	3
Amortization of operating lease right-of-use assets	105	106
Increase in accrued interest payable and other liabilities	2,693	2,587
Loans originated for sale	(47,760)	(128,289)
Proceeds on sales of loans	49,583	155,665
Net gain on sales of loans	(811)	(3,003)
Net cash and cash equivalents provided by operating activities	14,738	40,696
Cash Flows from Investing Activities
Proceeds from maturities of investment securities available for sale	18,494	15,256
Purchases of investment securities available for sale	(184,975)	(45,139)
Purchases of stock of Federal Home Loan Bank	316	0
Loans made to customers, net of collections	(27,144)	29,675
Proceeds on sale of other real estate owned and other repossessed assets	0	52
Purchases of property and equipment	(159)	(195)
Investment in tax credit real estate	0	(4,183)
Net changes from tax credit real estate investment	(67)	172
Net cash and cash equivalents used in investing activities	(194,167)	(4,362)
Cash Flows from Financing Activities
Net increase in deposits	127,590	218,762
Net decrease in short-term borrowings	(249)	0
Stock options exercised	119	0
Purchase of common stock	(1,816)	(1,311)
Proceeds from the issuance of common stock through the employee stock purchase plan	110	114
Dividends paid	(9,305)	(8,773)
Net cash and cash equivalents provided by financing activities	116,449	208,792
(Decrease) increase in cash and cash equivalents	(62,980)	245,126
Cash and cash equivalents:
Beginning of period	781,918	574,310
End of period	718,938	819,436
Cash payments for:
Interest paid to depositors	3,137	4,394
Interest paid on other obligations	0	741
Income taxes paid	0	0
Noncash activities:
Increase in maximum cash obligation related to ESOP shares	1,926	805
Right-of-use assets obtained in exchange for operating lease obligations	$ 47	$ 0

Summary of Significant Accounti

Summary of Significant Accounting Policies	3 Months Ended
	Mar. 31, 2022
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies Basis of Presentation: The accompanying unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America for interim financial reporting and with instructions for Form 10-Q and Regulation S-X. These financial statements include all adjustments (consisting of normal recurring accruals) which in the opinion of management are considered necessary for the fair presentation of the financial position and results of operations for the periods shown. Certain prior year amounts have been reclassified to conform to the current year presentation. The Company considers that it operates as one business segment, a commercial bank. Operating results for the three month period ended March 31, 2022 are not necessarily indicative of the results that may be expected for the fiscal year ending December 31, 2022. For further information, refer to the consolidated financial statements and footnotes thereto included in the Form 10-K Annual Report of Hills Bancorporation and subsidiary (the “Company”) for the year ended December 31, 2021 filed with the Securities Exchange Commission on March 4, 2022. The consolidated balance sheet as of December 31, 2021, has been derived from the audited consolidated financial statements for that period. The Company evaluated subsequent events through the filing date of its quarterly report on Form 10-Q with the SEC. 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 March 31, 2022 may change in the near-term and the effect could be material to the consolidated financial statements. Actual amounts and values as of the balance sheet dates may be materially different than the amounts and values reported due to the inherent uncertainty in the estimation process. 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. Interest income on loans and investment securities is recognized on the accrual method in accordance with written contracts. 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 March 31, 2022, 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 has not incurred or capitalized any contract acquisition costs as of March 31, 2022. 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 of which are affordable housing projects as of March 31, 2022. 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. 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 March 31, 2022. 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. Adoption of Financial Accounting Standard Codification 326 (ASC 326 (CECL)): On January 1, 2021, the Company adopted 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 Company adopted ASC 326 using the modified retrospective method for all financial assets measured at amortized cost and off-balance sheet (OBS) credit exposures. Results for reporting periods beginning January 1, 2021 are presented under ASC 326. 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 On Loans 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 Available-for-sale debt securities and the allowance for credit losses on available-for-sale debt 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 March 31, 2022 or 2021. 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 $2.63 million at March 31, 2022 and is excluded from the estimate of credit losses. 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 that management has the intent and ability to hold for the foreseeable future or until maturity or payoff are reported at amortized cost net of the allowance for credit losses ("ACL"). Amortized cost is the principal balance outstanding, net of deferred loan fees and costs. Accrued interest receivable on loans held for investment totaled $10.32 million at March 31, 2022 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 unless the loan is well secured and in the process of collection. When a loan is placed on nonaccrual status, all previously accrued and unpaid interest is reversed against interest income. 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. 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 the expected losses over the remaining life of 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 including obligations of states and political subdivisions, 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 f

Earnings Per Share

Earnings Per Share	3 Months Ended
	Mar. 31, 2022
Earnings Per Share [Abstract]
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. The computation of basic and diluted earnings per share for the periods presented is as follows: Three Months Ended March 31, 2022 2021 Common shares outstanding at the beginning of the period 9,299,640 9,330,995 Weighted average number of net shares (redeemed) issued (9,053) (7,222) Weighted average shares outstanding (basic) 9,290,587 9,323,773 Weighted average of potential dilutive shares attributable to stock options granted, computed under the treasury stock method 3,194 3,480 Weighted average number of shares (diluted) 9,293,781 9,327,253 Net income (In thousands) $ 10,652 $ 15,197 Earnings per share: Basic $ 1.15 $ 1.63 Diluted $ 1.15 $ 1.63

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	3 Months Ended
	Mar. 31, 2022
Equity [Abstract]
Accumulated Other Comprehensive Income	Accumulated Other Comprehensive Income The following table summarizes the balances of each component of accumulated other comprehensive (loss) income (AOCI), included in stockholders’ equity, at March 31, 2022 and December 31, 2021: March 31, 2022 December 31, 2021 (amounts in thousands) Net unrealized (loss) gain on available-for-sale securities $ (27,796) $ 1,968 Tax effect 6,935 (491) Net-of-tax amount $ (20,861) $ 1,477

Securities

Securities	3 Months Ended
	Mar. 31, 2022
Investments, Debt and Equity Securities [Abstract]
Securities	Securities The carrying values of investment securities at March 31, 2022 and December 31, 2021 are summarized in the following table (dollars in thousands): March 31, 2022 December 31, 2021 Amount Percent Amount Percent Securities available for sale U.S. Treasury $ 360,449 52.41 % $ 243,925 44.24 % Other securities (FHLB, FHLMC and FNMA) 32,865 4.78 34,467 6.25 State and political subdivisions 245,172 35.65 263,516 47.80 Mortgage-backed securities and collateralized mortgage obligations 49,283 7.16 9,446 1.71 Total securities available for sale $ 687,769 100.00 % $ 551,354 100.00 % 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 March 31, 2022 and December 31, 2021, 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. There were no trading or held to maturity securities as of March 31, 2022 or December 31, 2021. The carrying amount of available-for-sale securities, fair values and allowance for credit losses were as follows as of March 31, 2022 and December 31, 2021 (in thousands): Amortized Cost Gross Gross Allowance for Credit Losses Estimated Fair March 31, 2022 U.S. Treasury $ 371,515 $ 354 $ (11,420) $ — $ 360,449 Other securities (FHLB, FHLMC and FNMA) 35,328 — (2,463) — 32,865 State and political subdivisions 257,241 502 (12,571) — 245,172 Mortgage-backed securities and collateralized mortgage obligations 51,481 — (2,198) — $ 49,283 Total $ 715,565 $ 856 $ (28,652) $ — $ 687,769 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 The amortized cost and estimated fair value of available-for-sale securities classified according to their contractual maturities at March 31, 2022, were as follows (in thousands) below. 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 following summary. Amortized Fair Value Due in one year or less $ 74,647 $ 74,734 Due after one year through five years 440,843 427,454 Due after five years through ten years 109,517 103,584 Due over ten years 39,077 32,714 $ 664,084 $ 638,486 Mortgage-backed securities and collateralized mortgage obligations 51,481 49,283 $ 715,565 $ 687,769 As of March 31, 2022, investment securities with a carrying value of $9.54 million were pledged to collateralize other borrowings. As of March 31, 2022, 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. There were no sales of available-for-sale securities for the three months ended March 31, 2022 and 2021. The following table shows the fair value, gross unrealized losses and the percentage of fair value represented by gross unrealized losses of applicable investment securities owned by the Company, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at March 31, 2022 and December 31, 2021 (in thousands): Less than 12 months 12 months or more Total March 31, 2022 # Fair Value Unrealized % # Fair Value Unrealized % # Fair Value Unrealized % U.S. Treasury 101 $ 288,928 $ (9,977) 3.45 % 9 $ 21,431 $ (1,443) 6.73 % 110 $ 310,359 $ (11,420) 3.68 % Other securities (FHLB, FHLMC and FNMA) — — — — 14 32,865 (2,463) 7.49 14 32,865 (2,463) 7.49 State and political subdivisions 523 165,019 (11,330) 6.87 29 12,751 (1,241) 9.73 552 177,770 (12,571) 7.07 Mortgage-backed securities and collateralized mortgage obligations 14 41,797 (2,198) 5.26 — — — — 14 41,797 (2,198) 5.26 Total temporarily impaired securities 638 $ 495,744 $ (23,505) 4.74 % 52 $ 67,047 $ (5,147) 7.68 % 690 $ 562,791 $ (28,652) 5.09 % Less than 12 months 12 months or more Total December 31, 2021 # Fair Value Unrealized % # Fair Value Unrealized % # Fair Value Unrealized % 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 Total temporarily impaired securities 295 $ 229,339 $ (3,690) 1.61 % 24 $ 33,648 $ (773) 2.30 % 319 $ 262,987 $ (4,463) 1.70 % 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 March 31, 2022. 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

Loans

Loans	3 Months Ended
	Mar. 31, 2022
Receivables [Abstract]
Loans	Loans Classes of loans are as follows: March 31, 2022 December 31, (Amounts In Thousands) Agricultural $ 104,900 $ 106,933 Commercial and financial 223,702 222,002 Real estate: Construction, 1 to 4 family residential 87,390 80,486 Construction, land development and commercial 135,353 127,021 Mortgage, farmland 236,573 232,744 Mortgage, 1 to 4 family first liens 919,734 909,564 Mortgage, 1 to 4 family junior liens 111,278 114,342 Mortgage, multi-family 381,942 382,792 Mortgage, commercial 404,769 401,377 Loans to individuals 31,568 32,687 Obligations of state and political subdivisions 50,397 50,285 $ 2,687,606 $ 2,660,233 Net unamortized fees and costs 186 299 $ 2,687,792 $ 2,660,532 Less allowance for credit losses 35,850 35,470 $ 2,651,942 $ 2,625,062 As of March 31, 2022 and December 31, 2021, the Company has outstanding balances of $0.91 million and $5.34 million, respectively, of loans issued under the Paycheck Protection Program (PPP). For the three months ended March 31, 2022 and 2021, the Company recognized none and $1.88 million, respectively, of deferred PPP loan fees in interest income. Changes in the allowance for credit losses, the allowance for credit losses applicable to individually evaluated loans and the related loan balance of individually evaluated loans for the three months ended March 31, 2022 were as follows: Three Months Ended March 31, 2022 Agricultural Commercial and Real Estate: Real Estate: Real Estate: Real Estate: Other Total (Amounts In Thousands) Allowance for credit losses: Beginning balance $ 2,261 $ 4,269 $ 2,300 $ 3,433 $ 11,498 $ 10,498 $ 1,211 $ 35,470 Charge-offs — (48) — — (140) (1) (150) (339) Recoveries 14 123 3 43 207 22 43 455 Credit loss expense (benefit) 139 551 44 (166) (127) (285) 108 264 Ending balance $ 2,414 $ 4,895 $ 2,347 $ 3,310 $ 11,438 $ 10,234 $ 1,212 $ 35,850 Ending balance, individually evaluated for credit losses $ 1 $ 191 $ 59 $ 1 $ 40 $ 312 $ 1 $ 605 Ending balance, collectively evaluated for credit losses $ 2,413 $ 4,704 $ 2,288 $ 3,309 $ 11,398 $ 9,922 $ 1,211 $ 35,245 Loans: Ending balance $ 104,900 $ 223,702 $ 222,743 $ 236,573 $ 1,031,012 $ 786,711 $ 81,965 $ 2,687,606 Ending balance, individually evaluated for credit losses $ 581 $ 1,981 $ 1,040 $ 1,276 $ 5,582 $ 5,154 $ 159 $ 15,773 Ending balance, collectively evaluated for credit losses $ 104,319 $ 221,721 $ 221,703 $ 235,297 $ 1,025,430 $ 781,557 $ 81,806 $ 2,671,833 Changes in the allowance for loan losses for the three months ended March 31, 2021 were as follows: Three Months Ended March 31, 2021 Agricultural Commercial and Real Estate: Real Estate: Real Estate: Real Estate: Other Total (Amounts In Thousands) Allowance for loan 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 — (30) — — (75) — (66) (171) Recoveries 32 234 34 — 239 139 37 715 Credit loss expense (benefit) (65) (273) (392) (268) (1,558) (1,329) 145 (3,740) Ending balance $ 2,147 $ 5,114 $ 2,288 $ 4,668 $ 11,496 $ 9,621 $ 1,286 $ 36,620 Ending balance, individually evaluated for impairment $ 1 $ 299 $ — $ — $ 62 $ 166 $ 79 $ 607 Ending balance, collectively evaluated for impairment $ 2,146 $ 4,815 $ 2,288 $ 4,668 $ 11,434 $ 9,455 $ 1,207 $ 36,013 Loans: Ending balance $ 96,042 $ 281,337 $ 184,012 $ 246,665 $ 996,379 $ 790,831 $ 84,858 $ 2,680,124 Ending balance, individually evaluated for impairment $ 1,387 $ 1,947 $ 521 $ 1,916 $ 7,338 $ 6,145 $ 79 $ 19,333 Ending balance, collectively evaluated for impairment $ 94,655 $ 279,390 $ 183,491 $ 244,749 $ 989,041 $ 784,686 $ 84,779 $ 2,660,791 Changes in the allowance for credit losses for off-balance sheet credit exposures for the three months ended March 31, 2022 were as follows: Three Months Ended March 31, 2022 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 $ 383 $ 1,118 $ 849 $ 113 $ 794 $ 559 $ 34 $ 3,850 Credit loss expense (benefit) 130 302 277 (13) 131 34 (21) 840 (Charge-offs), net recoveries — — — — — — — — Ending balance $ 513 $ 1,420 $ 1,126 $ 100 $ 925 $ 593 $ 13 $ 4,690 Three Months Ended March 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 expense 58 239 197 22 175 38 27 756 (Charge-offs), net recoveries — — — — — — — — Ending balance $ 443 $ 1,824 $ 933 $ 202 $ 646 $ 250 $ 42 $ 4,340 Credit loss expense for off-balance sheet credit exposures is included in credit loss expense on the consolidated statement of income for the three months ended March 31, 2022 and 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 March 31, 2022 (amounts in thousands): Agricultural March 31, 2022 2022 2021 2020 2019 2018 Prior Revolving Loans Amortized Cost Basis Total Grade: Excellent $ 603 $ 327 $ 254 $ 77 $ 7 $ — $ 3,147 $ 4,415 Good 687 1,401 1,317 516 44 61 4,540 8,566 Satisfactory 5,221 9,284 3,785 1,389 1,667 349 23,079 44,774 Monitor 8,817 5,899 3,187 943 729 409 21,817 41,801 Special Mention 189 1,652 5 177 — — 2,753 4,776 Substandard — 213 53 102 — — 200 568 Total $ 15,517 $ 18,776 $ 8,601 $ 3,204 $ 2,447 $ 819 $ 55,536 $ 104,900 Commercial and Financial March 31, 2022 2022 2021 2020 2019 2018 Prior Revolving Loans Amortized Cost Basis Total Grade: Excellent $ 446 $ 893 $ 645 $ 4 $ 235 $ 19 $ 3,733 $ 5,975 Good 4,017 11,951 4,446 910 1,006 1,597 12,291 36,218 Satisfactory 14,016 38,285 17,383 6,670 3,228 1,883 43,972 125,437 Monitor 5,544 13,845 8,343 1,837 967 652 19,472 50,660 Special Mention 219 305 469 127 62 85 211 1,478 Substandard 1,316 450 — 89 — 91 1,988 3,934 Total $ 25,558 $ 65,729 $ 31,286 $ 9,637 $ 5,498 $ 4,327 $ 81,667 $ 223,702 Real Estate: Construction, 1 to 4 Family Residential March 31, 2022 2022 2021 2020 2019 2018 Prior Revolving Loans Amortized Cost Basis Total Grade: Excellent $ — $ — $ — $ — $ — $ — $ 2 $ 2 Good 212 6,392 — — — — 20,175 26,779 Satisfactory 1,070 7,775 — — — — 40,258 49,103 Monitor 24 869 — — — — 9,915 10,808 Special Mention — — — — — — 593 593 Substandard — 105 — — — — — 105 Total $ 1,306 $ 15,141 $ — $ — $ — $ — $ 70,943 $ 87,390 Real Estate: Construction, Land Development and Commercial March 31, 2022 2022 2021 2020 2019 2018 Prior Revolving Loans Amortized Cost Basis Total Grade: Excellent $ — $ 5,079 $ — $ — $ — $ 142 $ — $ 5,221 Good 397 3,187 1,200 — — 389 13,677 18,850 Satisfactory 4,234 18,360 3,030 1,556 260 970 50,683 79,093 Monitor 646 5,851 306 7 37 73 17,782 24,702 Special Mention — — — — — — — — Substandard 7,000 191 295 — — — 1 7,487 Total $ 12,277 $ 32,668 $ 4,831 $ 1,563 $ 297 $ 1,574 $ 82,143 $ 135,353 Real Estate: Mortgage, Farmland March 31, 2022 2022 2021 2020 2019 2018 Prior Revolving Loans Amortized Cost Basis Total Grade: Excellent $ 2,433 $ 105 $ 1,216 $ 120 $ — $ 41 $ 130 $ 4,045 Good 12,731 14,659 8,210 1,701 1,636 6,096 5,421 50,454 Satisfactory 23,507 48,441 24,613 4,433 8,047 12,175 8,837 130,053 Monitor 18,502 8,079 6,555 4,099 685 3,222 4,303 45,445 Special Mention 3,672 439 284 289 — 230 — 4,914 Substandard — 1,063 357 — 47 194 1 1,662 Total $ 60,845 $ 72,786 $ 41,235 $ 10,642 $ 10,415 $ 21,958 $ 18,692 $ 236,573 Real Estate: Mortgage, 1 to 4 Family First Liens March 31, 2022 2022 2021 2020 2019 2018 Prior Revolving Loans Amortized Cost Basis Total Grade: Excellent $ — $ — $ 12 $ — $ — $ — $ 6 $ 18 Good — 192 602 95 — 574 1,283 2,746 Satisfactory 2,339 13,008 9,387 5,330 6,453 9,864 54,691 101,072 Monitor 26 271 1,058 69 296 367 3,338 5,425 Special Mention 21 107 491 34 51 168 111 983 Substandard — 88 206 78 101 123 438 1,033 Total $ 2,386 $ 13,666 $ 11,756 $ 5,606 $ 6,901 $ 11,096 $ 59,867 $ 111,278 Real Estate: Mortgage, 1 to 4 Family Junior Liens March 31, 2022 2022 2021 2020 2019 2018 Prior Revolving Loans Amortized Cost Basis Total Grade: Excellent $ 644 $ 459 $ 902 $ — $ 16 $ 542 $ 1 $ 2,564 Good 9,029 5,053 10,100 2,619 2,244 11,867 2,351 43,263 Satisfactory 70,049 223,599 166,255 61,627 60,498 163,853 9,028 754,909 Monitor 6,752 24,317 32,624 4,858 6,041 15,512 4,501 94,605 Special Mention 131 1,713 3,266 1,200 1,114 4,533 85 12,042 Substandard 684 1,545 1,816 932 1,540 5,833 1 12,351 Total $ 87,289 $ 256,686 $ 214,963 $ 71,236 $ 71,453 $ 202,140 $ 15,967 $ 919,734 Real Estate: Mortgage, Multi-Family March 31, 2022 2022 2021 2020 2019 2018 Prior Revolving Loans Amortized Cost Basis Total Grade: Excellent $ — $ 2,516 $ 4,454 $ — $ — $ 685 $ — $ 7,655 Good 18,198 16,696 17,796 1,514 — 9,038 — 63,242 Satisfactory 29,143 105,764 42,587 7,097 830 15,286 16,832 217,539 Monitor 15,863 23,598 33,527 174 — 1,374 5,407 79,943 Special Mention — 632 — 819 — — — 1,451 Substandard — 12,112 — — — — — 12,112 Total $ 63,204 $ 161,318 $ 98,364 $ 9,604 $ 830 $ 26,383 $ 22,239 $ 381,942 Real Estate: Mortgage, Commercial March 31, 2022 2022 2021 2020 2019 2018 Prior Revolving Loans Amortized Cost Basis Total Grade: Excellent $ 2,257 $ 592 $ 16,530 $ — $ — $ 1,265 $ — $ 20,644 Good 9,513 24,182 23,478 2,569 1,335 8,000 9,697 78,774 Satisfactory 24,862 69,705 43,704 14,146 10,953 21,227 18,468 203,065 Monitor 10,524 14,281 48,020 3,877 1,460 9,633 3,366 91,161 Special Mention — 6,372 516 171 — 801 — 7,860 Substandard — 1,126 1,705 130 203 101 — 3,265 Total $ 47,156 $ 116,258 $ 133,953 $ 20,893 $ 13,951 $ 41,027 $ 31,531 $ 404,769 Loans to Individuals March 31, 2022 2022 2021 2020 2019 2018 Prior Revolving Loans Amortized Cost Basis Total Grade: Excellent $ — $ — $ — $ — $ — $ — $ — $ — Good — — — 49 — 4 1 54 Satisfactory 3,032 10,144 4,475 1,785 746 10,533 59 30,774 Monitor 164 231 97 27 41 1 2 563 Special Mention 8 49 27 8 3 — — 95 Substandard 11 21 39 10 — — 1 82 Total $ 3,215 $ 10,445 $ 4,638 $ 1,879 $ 790 $ 10,538 $ 63 $ 31,568 Obligations of State and Political Subdivisions March 31, 2022 2022 2021 2020 2019 2018 Prior Revolving Loans Amortized Cost Basis Total Grade: Excellent $ — $ — $ — $ — $ — $ 5,891 $ — $ 5,891 Good — — 1,956 — — 8,874 — 10,830 Satisfactory 909 1,006 2,012 1,544 691 15,033 9,261 30,456 Monitor — — 924 197 245 1,853 1 3,220 Special Mention — — — — — — — — Substandard — — — — — — — — Total $ 909 $ 1,006 $ 4,892 $ 1,741 $ 936 $ 31,651 $ 9,262 $ 50,397 The following table presents the credit quality indicators by type of loans 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 Past due loans as of March 31, 2022 and December 31, 2021 were as follows: 30 - 59 Days 60 - 89 Days 90 Days Total Past Current Total Accruing Loans (Amounts In Thousands) March 31, 2022 Agricultural $ 1,860 $ 253 $ 252 $ 2,365 $ 102,535 $ 104,900 $ 40 Commercial and financial 2,394 700 109 3,203 220,499 223,702 102 Real estate: Construction, 1 to 4 family residential 1,013 — 383 1,396 85,994 87,390 383 Construction, land development and commercial 559 391 163 1,113 134,240 135,353 66 Mortgage, farmland 3,221 160 107 3,488 233,085 236,573 60 Mortgage, 1 to 4 family first liens 6,038 621 2,071 8,730 911,004 919,734 68 Mortgage, 1 to 4 family junior liens 268 — 121 389 110,889 111,278 — Mortgage, multi-family — — — — 381,942 381,942 — Mortgage, commercial 2,258 2 959 3,219 401,550 404,769 — Loans to individuals 147 11 — 158 31,410 31,568 — Obligations of state and political subdivisions — — 159 159 50,238 50,397 159 $ 17,758 $ 2,138 $ 4,324 $ 24,220 $ 2,663,386 $ 2,687,606 $ 878 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 The Company does not have a material 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. Certain nonaccrual and TDR loan information by loan type at March 31, 2022 and December 31, 2021, was as follows: March 31, 2022 December 31, 2021 Non-accrual Accruing loans TDR loans Non- Accruing loans TDR loans (Amounts In Thousands) (Amounts In Thousands) Agricultural $ 221 $ 40 $ 138 $ 221 $ 6 $ 374 Commercial and financial 918 102 740 707 91 1,085 Real estate: Construction, 1 to 4 family residential 104 383 — 111 — — Construction, land development and commercial 287 66 199 290 — 202 Mortgage, farmland 52 60 1,165 251 — 1,206 Mortgage, 1 to 4 family first liens 4,234 68 1,316 4,685 104 1,364 Mortgage, 1 to 4 family junior liens 196 — 19 200 — 20 Mortgage, multi-family — — 1,451 — — 1,460 Mortgage, commercial 2,130 — 1,725 2,026 — 2,210 Loans to individuals — — — — — — Obligations of state and political subdivisions — 159 — — — — $ 8,142 $ 878 $ 6,753 $ 8,491 $ 201 $ 7,921 (1) There were $3.43 million and $2.28 million of TDR loans included within nonaccrual loans as of March 31, 2022 and December 31, 2021, respectively. Loans 90 days or more past due that are still accruing interest increased $0.68 million from December 31, 2021 to March 31, 2022. As of March 31, 2022, there were ten accruing loans past due 90 days or more with an average loan balance of $0.09 million. There were 6 accruing loans past due 90 days or more as of December 31, 2021 with an average loan balance of $0.03 million. The accruing loans past due 90 days or more balances are believed to be adequately collateralized and the Company expects to collect all principal and interest as contractually due under these loans. There was no interest income recognized on nonaccrual loans for the three months ended March 31, 2022 and year ended December 31, 2021. The Company may modify the terms of a loan to maximize the collection of amounts due. Such a modification is considered a troubled debt restructuring (“TDR”). In most cases, the modification is either 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 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 March 31, 2022, 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 $9.3 million. As of December 31, 2021, there were 16 loans, totaling $9.4 million that met the requirements and were not considered TDRs. As of March 31, 2022 and December 31, 2021, COVID-19 related payment deferrals were approximately 0.22% and 0.12% of total loans, respectively. Below is a summary of information for TDR loans as of March 31, 2022 and December 31, 2021: March 31, 2022 December 31, 2021 Number Recorded Commitments Number Recorded Commitments (Amounts In Thousands) (Amounts In Thousands) Agricultural 3 $ 351 $ 160 4 $ 586 $ — Commercial and financial 11 1,644 — 12 1,116 60 Real estate: Construction, 1 to 4 family residential 1 105 — — — — Construction, land development and commercial 2 390 — 1 202 — Mortgage, farmland 5 1,169 — 5 1,409 — Mortgage, 1 to 4 family first liens 11 1,329 — 14 1,441 — Mortgage, 1 to 4 family junior liens 1 19 — 1 20 — Mortgage, multi-family 2 1,451 — 2 1,460 — Mortgage, commercial 11 3,725 — 11 3,963 — Loans to individuals — — — — — — Obligations of state and political subdivisions — — — — — — 47 $ 10,183 $ 160 50 $ 10,197 $ 60 The following is a summary of TDR loans that were modified during the three months ended March 31, 2022: Three Months Ended March 31, 2022 Number Pre-modification Post-modification (Amounts In Thousands) Agricultural — $ — $ — Commercial and financial 1 371 371 Real estate: Construction, 1 to 4 family residential 1 105 105 Construction, land development and commercial 1 191 191 Mortgage, farmland — — — Mortgage, 1 to 4 family first lien — — — Mortgage, 1 to 4 family junior liens — — — Mortgage, multi-family — — — Mortgage, commercial 1 274 274 Loans to individuals — — — Obligations of state and political subdivisions — — — 4 $ 941 $ 941 The Company has allocated $0.55 million of allowance for TDR loans and the Company had commitments to lend $0.16 million in additional borrowings to restructured loan customers as of March 31, 2022. The Company had commitments to lend $0.06 million in additional borrowings to restructured loan customers as of December 31, 2021. 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 three months ended March 31, 2022 included extensions of the maturity date. There were no TDR loans that were in payment default (defined as past due 90 days or more) during the period ended March 31, 2022 and the year ended December 31, 2021. 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) March 31, 2022 Agricultural $ 545 $ — $ 36 $ — $ 581 $ 1 Commercial and financial 1,878 — 103 — 1,981 191 Real estate: Construction, 1 to 4 family residential 488 — — — 488 58 Construction, land development and commercial 552 — — — 552 1 Mortgage, farmland 1,276 — — — 1,276 1 Mortgage, 1 to 4 family first liens 5,441 — — — 5,441 33 Mortgage, 1 to 4 family junior liens 141 — — — 141 7 Mortgage, multi-family 1,451 — — — 1,451 — Mortgage, commercial 3,703 — — — 3,703 312 Loans to individuals — — — — — — Obligations of state and political subdivisions 159 — — — 159 1 $ 15,634 $ — $ 139 $ — $ 15,773 $ 605 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 co

Leases

Leases	3 Months Ended
	Mar. 31, 2022
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 three months ended March 31, 2022 and 2021, total operating lease expense was $0.14 million and $0.14 million respectively, and is included in occupancy expenses in the consolidated statements of income. Included in this for the three months ended March 31, 2022 and 2021 were $0.12 million and $0.12 million, respectively, of operating lease costs, $0.01 million and $0.01 million, respectively, of short term lease costs, and $0.01 million and $0.01 million, respectively, of variable lease costs. For the three months ended March 31, 2022 and 2021, cash paid for amounts included in the measurement of operating lease liabilities was $0.12 million and $0.12 million, respectively. As of March 31, 2022 and December 31, 2021, operating lease right-of-use assets included in other assets was $2.42 million and $2.47 million respectively. Operating lease liabilities included in other liabilities were $2.49 million and $2.53 million as of March 31, 2022 and December 31, 2021. As of March 31, 2022 and December 31, 2021, the weighted average remaining lease term for operating leases was 9.80 years and 9.94 years, respectively, and the weighted average discount rate for operating leases was 3.49% and 3.49%, respectively. Discount rates used were determined from FHLB borrowing rates for comparable terms. As of March 31, 2022, maturities of lease liabilities were as follows: Year ending December 31: (Amounts In Thousands) 2022 (excluding the three months ended March 31, 2022) $ 355 2023 327 2024 260 2025 263 2026 266 Thereafter 1,503 Total lease payments 2,974 Less imputed interest (488) Total operating lease liabilities $ 2,486

Fair Value Measurements

Fair Value Measurements	3 Months Ended
	Mar. 31, 2022
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 March 31, 2022 are as follows: March 31, 2022 Carrying Estimated Fair Readily Observable Company (Amounts In Thousands) Financial instrument assets: Cash and cash equivalents $ 718,938 $ 718,938 $ 718,938 $ — $ — Investment securities 692,631 692,631 360,449 332,182 — Loans held for sale 4,704 4,704 — 4,704 — Loans Agricultural 102,486 101,970 — — 101,970 Commercial and financial 218,807 217,496 — — 217,496 Real estate: Construction, 1 to 4 family residential 86,578 86,131 — — 86,131 Construction, land development and commercial 133,818 132,401 — — 132,401 Mortgage, farmland 233,263 231,220 — — 231,220 Mortgage, 1 to 4 family first liens 911,479 909,423 — — 909,423 Mortgage, 1 to 4 family junior liens 108,281 107,745 — — 107,745 Mortgage, multi-family 378,797 377,536 — — 377,536 Mortgage, commercial 397,680 394,636 — — 394,636 Loans to individuals 30,799 31,017 — — 31,017 Obligations of state and political subdivisions 49,954 50,220 — — 50,220 Accrued interest receivable 12,946 12,946 — 12,946 — Total financial instrument assets $ 4,081,161 $ 4,069,014 $ 1,079,387 $ 349,832 $ 2,639,795 Financial instrument liabilities Deposits Noninterest-bearing deposits $ 625,522 $ 625,522 $ — $ 625,522 $ — Interest-bearing deposits 3,036,062 3,042,148 — 3,042,148 — Accrued interest payable 1,084 1,084 — 1,084 — Total financial instrument liabilities $ 3,662,668 $ 3,668,754 $ — $ 3,668,754 $ — Face Amount Financial instrument with off-balance sheet risk: Loan commitments $ 733,631 $ — $ — $ — $ — Letters of credit 6,899 — — — — Total financial instrument liabilities with off-balance-sheet risk $ 740,530 $ — $ — $ — $ — (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, 2021 are as follows: December 31, 2021 Carrying Estimated Fair 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 $ — $ — $ — $ — Considered Level 1 under ASC 820. (1) Considered Level 2 under ASC 820. (2) 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. ASSETS 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 three months ended March 31, 2022. 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 cost 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: March 31, 2022 Readily Observable Company Total at Fair Securities available for sale (Amounts In Thousands) U.S. Treasury $ 360,449 $ — $ — $ 360,449 State and political subdivisions — 245,172 — 245,172 Mortgage-backed securities and collateralized mortgage obligations — 49,283 — 49,283 Other securities (FHLB, FHLMC and FNMA) — 32,865 — 32,865 Total $ 360,449 $ 327,320 $ — $ 687,769 December 31, 2021 Readily Observable Company Total at Fair 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 (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 three months ended March 31, 2022 and the year ended December 31, 2021. 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. The following tables present the Company’s assets that are measured at fair value on a nonrecurring basis. March 31, 2022 Three Months Ended March 31, 2022 Readily Observable Company Total at Total Losses (Amounts in Thousands) Loans (4) Agricultural $ — $ — $ 221 $ 221 $ — Commercial and financial — — 1,416 1,416 — Real Estate: Construction, 1 to 4 family residential — — 440 440 — Construction, land development and commercial — — 96 96 — Mortgage, farmland — — 874 874 — Mortgage, 1 to 4 family first liens — — 5,406 5,406 65 Mortgage, 1 to 4 family junior liens — — 206 206 5 Mortgage, multi-family — — 1,451 1,451 — Mortgage, commercial — — 3,793 3,793 — Loans to individuals — — — — — Foreclosed assets (5) — — — — — Total $ — $ — $ 13,903 $ 13,903 $ 70 (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. Assets and Liabilities Recorded at Fair Value on a Nonrecurring Basis (continued) December 31, 2021 Year Ended December 31, 2021 Readily Observable Company Total at Fair Total Losses (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.

Stock Repurchase Program

Stock Repurchase Program	3 Months Ended
	Mar. 31, 2022
Equity [Abstract]
Stock Repurchase Program	Stock Repurchase ProgramOn July 26, 2005, the Company’s Board of Directors authorized a program to repurchase up to a total of 1,500,000 shares of the Company’s common stock (the “2005 Stock Repurchase Program”).  The Company’s Board of Directors has authorized the 2005 Stock Repurchase Program through December 31, 2023.  The Company expects the purchases pursuant to the 2005 Stock Repurchase Program to be made from time to time in private transactions at a price equal to the most recent quarterly independent appraisal of the shares of the Company’s common stock and with the Board reviewing the overall results of the 2005 Stock Repurchase Program on a quarterly basis.  All purchases made pursuant to the 2005 Stock Repurchase Program since its inception have been made on that basis.  The amount and timing of stock repurchases will be based on various factors, such as the Board’s assessment of the Company’s capital structure and liquidity, the amount of interest shown by shareholders in selling shares of stock to the Company at their appraised value, and applicable regulatory, legal and accounting factors.  The Company has purchased 1,431,156 shares of its common stock in privately negotiated transactions from August 1, 2005 through March 31, 2022.  Of these 1,431,156 shares, 26,412 shares were purchased during the quarter ended March 31, 2022, at an average price per share of $68.73.

Commitments and Contingencies

Commitments and Contingencies	3 Months Ended
	Mar. 31, 2022
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 $93.80 million. The concentrations of credit by type of loan are set forth in Note 5 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. 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 March 31, 2022 and December 31, 2021 is as follows: March 31, 2022 December 31, 2021 (Amounts In Thousands) Firm loan commitments and unused portion of lines of credit: Home equity loans $ 81,337 $ 78,961 Credit cards 67,652 65,913 Commercial, real estate and home construction 209,594 170,539 Commercial lines and real estate purchase loans 375,048 298,911 Outstanding letters of credit 6,899 7,179

Income Taxes

Income Taxes	3 Months Ended
	Mar. 31, 2022
Income Tax Disclosure [Abstract]
Income Taxes	Income TaxesFederal income tax expense for the three months ended March 31, 2022 and 2021 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 State of Iowa purposes.  The tax years ended December 31, 2021, 2020, and 2019 remain subject to examination by the Internal Revenue Service.  For state tax purposes, the tax years ended December 31, 2021, 2020, and 2019 remain open for examination.  There were no material unrecognized tax benefits at March 31, 2022  and December 31, 2021 and therefore no interest or penalties on unrecognized tax benefits has been recorded.  As of March 31, 2022, the Company does not anticipate any significant increase in unrecognized tax benefits during the twelve-month period ending March 31, 2023. Income taxes as a percentage of income before taxes were 20.97% for the three months ended March 31, 2022 and 22.29% for the same period in 2021.

Derivative Financial Instrument

Derivative Financial Instruments	3 Months Ended
	Mar. 31, 2022
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Financial Instruments	Derivative Financial InstrumentsIn 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 financial statement 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 did not have any derivative instruments designated as cash flow hedges as of March 31, 2022 and 2021, therefore the Bank was not required to pledge collateral as of March 31, 2022 and December 31, 2021.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	3 Months Ended
	Mar. 31, 2022
Accounting Policies [Abstract]
Basis of Presentation	Basis of Presentation: The accompanying unaudited consolidated financial statements have been prepared in accordance with accounting principles generally accepted in the United States of America for interim financial reporting and with instructions for Form 10-Q and Regulation S-X. These financial statements include all adjustments (consisting of normal recurring accruals) which in the opinion of management are considered necessary for the fair presentation of the financial position and results of operations for the periods shown. Certain prior year amounts have been reclassified to conform to the current year presentation. The Company considers that it operates as one business segment, a commercial bank.
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. Interest income on loans and investment securities is recognized on the accrual method in accordance with written contracts. 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 March 31, 2022, the Company did not have any significant contract balances.
Effect of New Financial Accounting Standards	Effect of New Financial Accounting Standards: 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 did not 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 . The amendments in this Update require that an entity (acquirer) recognize and measure contract assets and contract liabilities acquired in a business combination in accordance with Topic 606. At the acquisition date, an acquirer should account for the related revenue contracts in accordance with Topic 606 as if it had originated the contracts. To achieve this, an acquirer may assess how the acquiree applied Topic 606 to determine what to record for the acquired revenue contracts. The amendments in this ASU are effective for all entities for fiscal years beginning after December 15, 2022, including interim periods within those fiscal years. An entity should apply the amendments prospectively to business combinations occurring on or after the effective date of the amendments. The Company is in the process of evaluating the impact of this ASU on the financial statements. In March 2022, the FASB issued ASU 2022-02, Financial Instruments - Credit Losses (Topic 326) Troubled Debt Restructurings and Vintage Disclosures . The FASB issued these amendments to eliminate accounting guidance for TDRs by creditors in Subtopic 310-40, Receivables-Troubled Debt Restructurings by Creditors , while enhancing disclosure requirements for certain loan refinancings and restructurings by creditors when a borrower is experiencing financial difficulty, and to require that an entity disclose current-period gross writeoffs by year of origination for financing receivables and net investments in leases within the scope of Subtopic 326-20, Financial Instruments-Credit Losses-Measured at Amortized Cost . The amendments in this Update are effective for fiscal years beginning after December 15, 2022, including interim periods within
Earnings Per Share	Earnings Per ShareBasic 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.

Summary of Significant Accoun_3

Summary of Significant Accounting Policies Summary of Significant Accounting Policies (Tables)	3 Months Ended
	Mar. 31, 2022
Accounting Policies [Abstract]
Schedule of 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

Earnings Per Share (Tables)

Earnings Per Share (Tables)	3 Months Ended
	Mar. 31, 2022
Earnings Per Share [Abstract]
Schedule of computation of basic and diluted earnings per share	The computation of basic and diluted earnings per share for the periods presented is as follows: Three Months Ended March 31, 2022 2021 Common shares outstanding at the beginning of the period 9,299,640 9,330,995 Weighted average number of net shares (redeemed) issued (9,053) (7,222) Weighted average shares outstanding (basic) 9,290,587 9,323,773 Weighted average of potential dilutive shares attributable to stock options granted, computed under the treasury stock method 3,194 3,480 Weighted average number of shares (diluted) 9,293,781 9,327,253 Net income (In thousands) $ 10,652 $ 15,197 Earnings per share: Basic $ 1.15 $ 1.63 Diluted $ 1.15 $ 1.63

Accumulated Other Comprehensi_2

Accumulated Other Comprehensive Income (Tables)	3 Months Ended
	Mar. 31, 2022
Equity [Abstract]
Components of accumulated other comprehensive income (AOCI)	The following table summarizes the balances of each component of accumulated other comprehensive (loss) income (AOCI), included in stockholders’ equity, at March 31, 2022 and December 31, 2021: March 31, 2022 December 31, 2021 (amounts in thousands) Net unrealized (loss) gain on available-for-sale securities $ (27,796) $ 1,968 Tax effect 6,935 (491) Net-of-tax amount $ (20,861) $ 1,477

Securities (Tables)

Securities (Tables)	3 Months Ended
	Mar. 31, 2022
Investments, Debt and Equity Securities [Abstract]
Carrying values of investment securities	The carrying values of investment securities at March 31, 2022 and December 31, 2021 are summarized in the following table (dollars in thousands): March 31, 2022 December 31, 2021 Amount Percent Amount Percent Securities available for sale U.S. Treasury $ 360,449 52.41 % $ 243,925 44.24 % Other securities (FHLB, FHLMC and FNMA) 32,865 4.78 34,467 6.25 State and political subdivisions 245,172 35.65 263,516 47.80 Mortgage-backed securities and collateralized mortgage obligations 49,283 7.16 9,446 1.71 Total securities available for sale $ 687,769 100.00 % $ 551,354 100.00 %
Carrying amount of available-for-sale securities and approximate fair values	The carrying amount of available-for-sale securities, fair values and allowance for credit losses were as follows as of March 31, 2022 and December 31, 2021 (in thousands): Amortized Cost Gross Gross Allowance for Credit Losses Estimated Fair March 31, 2022 U.S. Treasury $ 371,515 $ 354 $ (11,420) $ — $ 360,449 Other securities (FHLB, FHLMC and FNMA) 35,328 — (2,463) — 32,865 State and political subdivisions 257,241 502 (12,571) — 245,172 Mortgage-backed securities and collateralized mortgage obligations 51,481 — (2,198) — $ 49,283 Total $ 715,565 $ 856 $ (28,652) $ — $ 687,769 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
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 March 31, 2022, were as follows (in thousands) below. 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 following summary. Amortized Fair Value Due in one year or less $ 74,647 $ 74,734 Due after one year through five years 440,843 427,454 Due after five years through ten years 109,517 103,584 Due over ten years 39,077 32,714 $ 664,084 $ 638,486 Mortgage-backed securities and collateralized mortgage obligations 51,481 49,283 $ 715,565 $ 687,769
Available-for-sale securities, continuous unrealized loss position, fair value	The following table shows the fair value, gross unrealized losses and the percentage of fair value represented by gross unrealized losses of applicable investment securities owned by the Company, aggregated by investment category and length of time that individual securities have been in a continuous unrealized loss position at March 31, 2022 and December 31, 2021 (in thousands): Less than 12 months 12 months or more Total March 31, 2022 # Fair Value Unrealized % # Fair Value Unrealized % # Fair Value Unrealized % U.S. Treasury 101 $ 288,928 $ (9,977) 3.45 % 9 $ 21,431 $ (1,443) 6.73 % 110 $ 310,359 $ (11,420) 3.68 % Other securities (FHLB, FHLMC and FNMA) — — — — 14 32,865 (2,463) 7.49 14 32,865 (2,463) 7.49 State and political subdivisions 523 165,019 (11,330) 6.87 29 12,751 (1,241) 9.73 552 177,770 (12,571) 7.07 Mortgage-backed securities and collateralized mortgage obligations 14 41,797 (2,198) 5.26 — — — — 14 41,797 (2,198) 5.26 Total temporarily impaired securities 638 $ 495,744 $ (23,505) 4.74 % 52 $ 67,047 $ (5,147) 7.68 % 690 $ 562,791 $ (28,652) 5.09 % Less than 12 months 12 months or more Total December 31, 2021 # Fair Value Unrealized % # Fair Value Unrealized % # Fair Value Unrealized % 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 Total temporarily impaired securities 295 $ 229,339 $ (3,690) 1.61 % 24 $ 33,648 $ (773) 2.30 % 319 $ 262,987 $ (4,463) 1.70 %

Loans (Tables)

Loans (Tables)	3 Months Ended
	Mar. 31, 2022
Receivables [Abstract]
Schedule of classes of loans	Classes of loans are as follows: March 31, 2022 December 31, (Amounts In Thousands) Agricultural $ 104,900 $ 106,933 Commercial and financial 223,702 222,002 Real estate: Construction, 1 to 4 family residential 87,390 80,486 Construction, land development and commercial 135,353 127,021 Mortgage, farmland 236,573 232,744 Mortgage, 1 to 4 family first liens 919,734 909,564 Mortgage, 1 to 4 family junior liens 111,278 114,342 Mortgage, multi-family 381,942 382,792 Mortgage, commercial 404,769 401,377 Loans to individuals 31,568 32,687 Obligations of state and political subdivisions 50,397 50,285 $ 2,687,606 $ 2,660,233 Net unamortized fees and costs 186 299 $ 2,687,792 $ 2,660,532 Less allowance for credit losses 35,850 35,470 $ 2,651,942 $ 2,625,062
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 balance of individually evaluated loans for the three months ended March 31, 2022 were as follows: Three Months Ended March 31, 2022 Agricultural Commercial and Real Estate: Real Estate: Real Estate: Real Estate: Other Total (Amounts In Thousands) Allowance for credit losses: Beginning balance $ 2,261 $ 4,269 $ 2,300 $ 3,433 $ 11,498 $ 10,498 $ 1,211 $ 35,470 Charge-offs — (48) — — (140) (1) (150) (339) Recoveries 14 123 3 43 207 22 43 455 Credit loss expense (benefit) 139 551 44 (166) (127) (285) 108 264 Ending balance $ 2,414 $ 4,895 $ 2,347 $ 3,310 $ 11,438 $ 10,234 $ 1,212 $ 35,850 Ending balance, individually evaluated for credit losses $ 1 $ 191 $ 59 $ 1 $ 40 $ 312 $ 1 $ 605 Ending balance, collectively evaluated for credit losses $ 2,413 $ 4,704 $ 2,288 $ 3,309 $ 11,398 $ 9,922 $ 1,211 $ 35,245 Loans: Ending balance $ 104,900 $ 223,702 $ 222,743 $ 236,573 $ 1,031,012 $ 786,711 $ 81,965 $ 2,687,606 Ending balance, individually evaluated for credit losses $ 581 $ 1,981 $ 1,040 $ 1,276 $ 5,582 $ 5,154 $ 159 $ 15,773 Ending balance, collectively evaluated for credit losses $ 104,319 $ 221,721 $ 221,703 $ 235,297 $ 1,025,430 $ 781,557 $ 81,806 $ 2,671,833 Changes in the allowance for loan losses for the three months ended March 31, 2021 were as follows: Three Months Ended March 31, 2021 Agricultural Commercial and Real Estate: Real Estate: Real Estate: Real Estate: Other Total (Amounts In Thousands) Allowance for loan 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 — (30) — — (75) — (66) (171) Recoveries 32 234 34 — 239 139 37 715 Credit loss expense (benefit) (65) (273) (392) (268) (1,558) (1,329) 145 (3,740) Ending balance $ 2,147 $ 5,114 $ 2,288 $ 4,668 $ 11,496 $ 9,621 $ 1,286 $ 36,620 Ending balance, individually evaluated for impairment $ 1 $ 299 $ — $ — $ 62 $ 166 $ 79 $ 607 Ending balance, collectively evaluated for impairment $ 2,146 $ 4,815 $ 2,288 $ 4,668 $ 11,434 $ 9,455 $ 1,207 $ 36,013 Loans: Ending balance $ 96,042 $ 281,337 $ 184,012 $ 246,665 $ 996,379 $ 790,831 $ 84,858 $ 2,680,124 Ending balance, individually evaluated for impairment $ 1,387 $ 1,947 $ 521 $ 1,916 $ 7,338 $ 6,145 $ 79 $ 19,333 Ending balance, collectively evaluated for impairment $ 94,655 $ 279,390 $ 183,491 $ 244,749 $ 989,041 $ 784,686 $ 84,779 $ 2,660,791 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) March 31, 2022 Agricultural $ 545 $ — $ 36 $ — $ 581 $ 1 Commercial and financial 1,878 — 103 — 1,981 191 Real estate: Construction, 1 to 4 family residential 488 — — — 488 58 Construction, land development and commercial 552 — — — 552 1 Mortgage, farmland 1,276 — — — 1,276 1 Mortgage, 1 to 4 family first liens 5,441 — — — 5,441 33 Mortgage, 1 to 4 family junior liens 141 — — — 141 7 Mortgage, multi-family 1,451 — — — 1,451 — Mortgage, commercial 3,703 — — — 3,703 312 Loans to individuals — — — — — — Obligations of state and political subdivisions 159 — — — 159 1 $ 15,634 $ — $ 139 $ — $ 15,773 $ 605 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 allowance for credit losses for off-balance sheet credit exposure	Changes in the allowance for credit losses for off-balance sheet credit exposures for the three months ended March 31, 2022 were as follows: Three Months Ended March 31, 2022 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 $ 383 $ 1,118 $ 849 $ 113 $ 794 $ 559 $ 34 $ 3,850 Credit loss expense (benefit) 130 302 277 (13) 131 34 (21) 840 (Charge-offs), net recoveries — — — — — — — — Ending balance $ 513 $ 1,420 $ 1,126 $ 100 $ 925 $ 593 $ 13 $ 4,690 Three Months Ended March 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 expense 58 239 197 22 175 38 27 756 (Charge-offs), net recoveries — — — — — — — — Ending balance $ 443 $ 1,824 $ 933 $ 202 $ 646 $ 250 $ 42 $ 4,340
Schedule of credit quality indicators by type of loans	The following table presents the credit quality indicators by type of loans 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
Schedule of past due loans	Past due loans as of March 31, 2022 and December 31, 2021 were as follows: 30 - 59 Days 60 - 89 Days 90 Days Total Past Current Total Accruing Loans (Amounts In Thousands) March 31, 2022 Agricultural $ 1,860 $ 253 $ 252 $ 2,365 $ 102,535 $ 104,900 $ 40 Commercial and financial 2,394 700 109 3,203 220,499 223,702 102 Real estate: Construction, 1 to 4 family residential 1,013 — 383 1,396 85,994 87,390 383 Construction, land development and commercial 559 391 163 1,113 134,240 135,353 66 Mortgage, farmland 3,221 160 107 3,488 233,085 236,573 60 Mortgage, 1 to 4 family first liens 6,038 621 2,071 8,730 911,004 919,734 68 Mortgage, 1 to 4 family junior liens 268 — 121 389 110,889 111,278 — Mortgage, multi-family — — — — 381,942 381,942 — Mortgage, commercial 2,258 2 959 3,219 401,550 404,769 — Loans to individuals 147 11 — 158 31,410 31,568 — Obligations of state and political subdivisions — — 159 159 50,238 50,397 159 $ 17,758 $ 2,138 $ 4,324 $ 24,220 $ 2,663,386 $ 2,687,606 $ 878 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
Schedule of impaired loan information	Certain nonaccrual and TDR loan information by loan type at March 31, 2022 and December 31, 2021, was as follows: March 31, 2022 December 31, 2021 Non-accrual Accruing loans TDR loans Non- Accruing loans TDR loans (Amounts In Thousands) (Amounts In Thousands) Agricultural $ 221 $ 40 $ 138 $ 221 $ 6 $ 374 Commercial and financial 918 102 740 707 91 1,085 Real estate: Construction, 1 to 4 family residential 104 383 — 111 — — Construction, land development and commercial 287 66 199 290 — 202 Mortgage, farmland 52 60 1,165 251 — 1,206 Mortgage, 1 to 4 family first liens 4,234 68 1,316 4,685 104 1,364 Mortgage, 1 to 4 family junior liens 196 — 19 200 — 20 Mortgage, multi-family — — 1,451 — — 1,460 Mortgage, commercial 2,130 — 1,725 2,026 — 2,210 Loans to individuals — — — — — — Obligations of state and political subdivisions — 159 — — — — $ 8,142 $ 878 $ 6,753 $ 8,491 $ 201 $ 7,921 (1) There were $3.43 million and $2.28 million of TDR loans included within nonaccrual loans as of March 31, 2022 and December 31, 2021, respectively.
Schedule of information for TDR loans	Below is a summary of information for TDR loans as of March 31, 2022 and December 31, 2021: March 31, 2022 December 31, 2021 Number Recorded Commitments Number Recorded Commitments (Amounts In Thousands) (Amounts In Thousands) Agricultural 3 $ 351 $ 160 4 $ 586 $ — Commercial and financial 11 1,644 — 12 1,116 60 Real estate: Construction, 1 to 4 family residential 1 105 — — — — Construction, land development and commercial 2 390 — 1 202 — Mortgage, farmland 5 1,169 — 5 1,409 — Mortgage, 1 to 4 family first liens 11 1,329 — 14 1,441 — Mortgage, 1 to 4 family junior liens 1 19 — 1 20 — Mortgage, multi-family 2 1,451 — 2 1,460 — Mortgage, commercial 11 3,725 — 11 3,963 — Loans to individuals — — — — — — Obligations of state and political subdivisions — — — — — — 47 $ 10,183 $ 160 50 $ 10,197 $ 60 The following is a summary of TDR loans that were modified during the three months ended March 31, 2022: Three Months Ended March 31, 2022 Number Pre-modification Post-modification (Amounts In Thousands) Agricultural — $ — $ — Commercial and financial 1 371 371 Real estate: Construction, 1 to 4 family residential 1 105 105 Construction, land development and commercial 1 191 191 Mortgage, farmland — — — Mortgage, 1 to 4 family first lien — — — Mortgage, 1 to 4 family junior liens — — — Mortgage, multi-family — — — Mortgage, commercial 1 274 274 Loans to individuals — — — Obligations of state and political subdivisions — — — 4 $ 941 $ 941

Leases (Tables)

Leases (Tables)	3 Months Ended
	Mar. 31, 2022
Leases [Abstract]
Maturities of lease liabilities, Topic 842	As of March 31, 2022, maturities of lease liabilities were as follows: Year ending December 31: (Amounts In Thousands) 2022 (excluding the three months ended March 31, 2022) $ 355 2023 327 2024 260 2025 263 2026 266 Thereafter 1,503 Total lease payments 2,974 Less imputed interest (488) Total operating lease liabilities $ 2,486

Fair Value Measurements (Tables

Fair Value Measurements (Tables)	3 Months Ended
	Mar. 31, 2022
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 March 31, 2022 are as follows: March 31, 2022 Carrying Estimated Fair Readily Observable Company (Amounts In Thousands) Financial instrument assets: Cash and cash equivalents $ 718,938 $ 718,938 $ 718,938 $ — $ — Investment securities 692,631 692,631 360,449 332,182 — Loans held for sale 4,704 4,704 — 4,704 — Loans Agricultural 102,486 101,970 — — 101,970 Commercial and financial 218,807 217,496 — — 217,496 Real estate: Construction, 1 to 4 family residential 86,578 86,131 — — 86,131 Construction, land development and commercial 133,818 132,401 — — 132,401 Mortgage, farmland 233,263 231,220 — — 231,220 Mortgage, 1 to 4 family first liens 911,479 909,423 — — 909,423 Mortgage, 1 to 4 family junior liens 108,281 107,745 — — 107,745 Mortgage, multi-family 378,797 377,536 — — 377,536 Mortgage, commercial 397,680 394,636 — — 394,636 Loans to individuals 30,799 31,017 — — 31,017 Obligations of state and political subdivisions 49,954 50,220 — — 50,220 Accrued interest receivable 12,946 12,946 — 12,946 — Total financial instrument assets $ 4,081,161 $ 4,069,014 $ 1,079,387 $ 349,832 $ 2,639,795 Financial instrument liabilities Deposits Noninterest-bearing deposits $ 625,522 $ 625,522 $ — $ 625,522 $ — Interest-bearing deposits 3,036,062 3,042,148 — 3,042,148 — Accrued interest payable 1,084 1,084 — 1,084 — Total financial instrument liabilities $ 3,662,668 $ 3,668,754 $ — $ 3,668,754 $ — Face Amount Financial instrument with off-balance sheet risk: Loan commitments $ 733,631 $ — $ — $ — $ — Letters of credit 6,899 — — — — Total financial instrument liabilities with off-balance-sheet risk $ 740,530 $ — $ — $ — $ — (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, 2021 are as follows: December 31, 2021 Carrying Estimated Fair 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 $ — $ — $ — $ — Considered Level 1 under ASC 820. (1) Considered Level 2 under ASC 820. (2) 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: March 31, 2022 Readily Observable Company Total at Fair Securities available for sale (Amounts In Thousands) U.S. Treasury $ 360,449 $ — $ — $ 360,449 State and political subdivisions — 245,172 — 245,172 Mortgage-backed securities and collateralized mortgage obligations — 49,283 — 49,283 Other securities (FHLB, FHLMC and FNMA) — 32,865 — 32,865 Total $ 360,449 $ 327,320 $ — $ 687,769 December 31, 2021 Readily Observable Company Total at Fair 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 (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	The following tables present the Company’s assets that are measured at fair value on a nonrecurring basis. March 31, 2022 Three Months Ended March 31, 2022 Readily Observable Company Total at Total Losses (Amounts in Thousands) Loans (4) Agricultural $ — $ — $ 221 $ 221 $ — Commercial and financial — — 1,416 1,416 — Real Estate: Construction, 1 to 4 family residential — — 440 440 — Construction, land development and commercial — — 96 96 — Mortgage, farmland — — 874 874 — Mortgage, 1 to 4 family first liens — — 5,406 5,406 65 Mortgage, 1 to 4 family junior liens — — 206 206 5 Mortgage, multi-family — — 1,451 1,451 — Mortgage, commercial — — 3,793 3,793 — Loans to individuals — — — — — Foreclosed assets (5) — — — — — Total $ — $ — $ 13,903 $ 13,903 $ 70 (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. Assets and Liabilities Recorded at Fair Value on a Nonrecurring Basis (continued) December 31, 2021 Year Ended December 31, 2021 Readily Observable Company Total at Fair Total Losses (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.

Commitments and Contingencies (

Commitments and Contingencies (Tables)	3 Months Ended
	Mar. 31, 2022
Commitments and Contingencies Disclosure [Abstract]
Schedule of banks commitments	A summary of the Bank’s commitments at March 31, 2022 and December 31, 2021 is as follows: March 31, 2022 December 31, 2021 (Amounts In Thousands) Firm loan commitments and unused portion of lines of credit: Home equity loans $ 81,337 $ 78,961 Credit cards 67,652 65,913 Commercial, real estate and home construction 209,594 170,539 Commercial lines and real estate purchase loans 375,048 298,911 Outstanding letters of credit 6,899 7,179

Summary of Significant Accoun_4

Summary of Significant Accounting Policies (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022USD ($)propertysegment	Dec. 31, 2021USD ($)	Mar. 31, 2021USD ($)	Feb. 28, 2021USD ($)	Jan. 01, 2021USD ($)	Dec. 31, 2020USD ($)
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accrued interest receivable on AFS debt securities	$ 2,630
Net decrease to retained earnings	414,161	$ 438,450	$ 413,250			$ 416,076
Accrued interest receivable	$ 12,946	11,437
Number of operating segments | segment	1
Number of multi family rental properties | property	3
Number of assisted living rental properties | property	3
Duration of tax credit of each property	10 years
Limited partnership, capital contribution				$ 4,180
Operating lease, right-of-use asset	$ 2,420	2,470
ACL Allocation	35,850	35,470	36,620		$ 37,070	37,070
Impact of adopting ASC 326	4,690	3,850	4,340		0	0
Loans Held For Investment
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Accrued interest receivable	$ 10,320
Each Limited Partnership
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Ownership interest in each limited partnership (or greater)	99.00%
As Reported Under ASC 326
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net decrease to retained earnings						411,325
ACL Allocation					39,816
Impact of adopting ASC 326					3,584
Impact of ASC 326 Adoption
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net decrease to retained earnings						(4,751)
ACL Allocation					2,746	2,746
Impact of adopting ASC 326					3,584	3,584
Deferred income taxes, net					1,580
Retained Earnings
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net decrease to retained earnings	$ 475,739	$ 474,392	$ 441,504			439,831
Retained Earnings | As Reported Under ASC 326
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net decrease to retained earnings						435,080
Retained Earnings | Impact of ASC 326 Adoption
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Net decrease to retained earnings					$ 4,750	$ (4,751)

Earnings Per Share (Details)

Earnings Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020
Summary of computation of basic and diluted earnings per share [Abstract]
Common shares outstanding at the beginning of the period (shares)			9,299,640	9,330,995
Weighted average number of net shares (redeemed) issued (shares)	(9,053)	(7,222)
Weighted average shares outstanding (basic) (shares)	9,290,587	9,323,773
Weighted average of potential dilutive shares attributable to stock options granted, computed under the treasury stock method (shares)	3,194	3,480
Weighted average number of shares (diluted) (shares)	9,293,781	9,327,253
Net income (In thousands)	$ 10,652	$ 15,197
Earnings per share:
Basic (in dollars per share)	$ 1.15	$ 1.63
Diluted (in dollars per share)	$ 1.15	$ 1.63

Accumulated Other Comprehensi_3

Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Accumulated Other Comprehensive Income Loss [Line Items]
Tax effect	$ 6,935	$ (491)
Net-of-tax amount	(20,861)	1,477
Net unrealized loss on available-for-sale securities [Member]
Accumulated Other Comprehensive Income Loss [Line Items]
Net unrealized gain (loss)	$ (27,796)	$ 1,968

Securities (Details)

Securities (Details)	3 Months Ended
	Mar. 31, 2022USD ($)security	Mar. 31, 2021USD ($)	Dec. 31, 2021USD ($)security
Securities available for sale
Securities available for sale, Percent	100.00%		100.00%
Available-for-sale Securities Reconciliation [Abstract]
Amortized Cost	$ 715,565,000		$ 549,386,000
Gross Unrealized Gains	856,000		6,431,000
Gross Unrealized (Losses)	(28,652,000)		(4,463,000)
Allowance for Credit Losses	0		0
Amortized Cost
Due in one year or less	74,647,000
Due after one year through five years	440,843,000
Due after five years through ten years	109,517,000
Due over ten years	39,077,000
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Amortized Cost, Total	664,084,000
Fair Value
Due in one year or less	74,734,000
Due after one year through five years	427,454,000
Due after five years through ten years	103,584,000
Due over ten years	32,714,000
Debt Securities, Available-for-sale, Maturity, Allocated and Single Maturity Date, Fair Value, Total	638,486,000
Carrying value of investment securities pledged to collateralize short-term borrowings	687,769,000		$ 551,354,000
Debt Securities, Available-for-sale, Realized Gain (Loss) [Abstract]
Sales, available for sale securities	$ 0	$ 0
Less than 12 months
Number of securities | security	638		295
Fair Value	$ 495,744,000		$ 229,339,000
Unrealized Loss	$ (23,505,000)		$ (3,690,000)
Percentage	4.74%		1.61%
12 months or more
Number of securities | security	52		24
Fair Value	$ 67,047,000		$ 33,648,000
Unrealized Loss	$ (5,147,000)		$ (773,000)
Percentage	7.68%		2.30%
Total
Number of securities | security	690		319
Fair Value	$ 562,791,000		$ 262,987,000
Unrealized Loss	$ (28,652,000)		$ (4,463,000)
Percentage	5.09%		1.70%
Collateralized Securities [Member]
Fair Value
Carrying value of investment securities pledged to collateralize short-term borrowings	$ 9,540,000
U.S. Treasury [Member]
Securities available for sale
Securities available for sale, Percent	52.41%		44.24%
Available-for-sale Securities Reconciliation [Abstract]
Amortized Cost	$ 371,515,000		$ 244,192,000
Gross Unrealized Gains	354,000		2,011,000
Gross Unrealized (Losses)	(11,420,000)		(2,278,000)
Allowance for Credit Losses	0		0
Fair Value
Carrying value of investment securities pledged to collateralize short-term borrowings	$ 360,449,000		$ 243,925,000
Less than 12 months
Number of securities | security	101		55
Fair Value	$ 288,928,000		$ 136,867,000
Unrealized Loss	$ (9,977,000)		$ (2,203,000)
Percentage	3.45%		1.61%
12 months or more
Number of securities | security	9		1
Fair Value	$ 21,431,000		$ 2,416,000
Unrealized Loss	$ (1,443,000)		$ (75,000)
Percentage	6.73%		3.10%
Total
Number of securities | security	110		56
Fair Value	$ 310,359,000		$ 139,283,000
Unrealized Loss	$ (11,420,000)		$ (2,278,000)
Percentage	3.68%		1.64%
Other securities [Member]
Securities available for sale
Securities available for sale, Percent	4.78%		6.25%
Available-for-sale Securities Reconciliation [Abstract]
Amortized Cost	$ 35,328,000		$ 35,353,000
Gross Unrealized Gains	0		0
Gross Unrealized (Losses)	(2,463,000)		(886,000)
Allowance for Credit Losses	0		0
Fair Value
Carrying value of investment securities pledged to collateralize short-term borrowings	$ 32,865,000		$ 34,467,000
Less than 12 months
Number of securities | security	0		5
Fair Value	$ 0		$ 12,484,000
Unrealized Loss	$ 0		$ (303,000)
Percentage	0.00%		2.43%
12 months or more
Number of securities | security	14		9
Fair Value	$ 32,865,000		$ 21,984,000
Unrealized Loss	$ (2,463,000)		$ (583,000)
Percentage	7.49%		2.65%
Total
Number of securities | security	14		14
Fair Value	$ 32,865,000		$ 34,468,000
Unrealized Loss	$ (2,463,000)		$ (886,000)
Percentage	7.49%		2.57%
State and political subdivisions [Member]
Securities available for sale
Securities available for sale, Percent	35.65%		47.80%
Available-for-sale Securities Reconciliation [Abstract]
Amortized Cost	$ 257,241,000		$ 260,266,000
Gross Unrealized Gains	502,000		4,420,000
Gross Unrealized (Losses)	(12,571,000)		(1,170,000)
Allowance for Credit Losses	0		0
Fair Value
Carrying value of investment securities pledged to collateralize short-term borrowings	$ 245,172,000		$ 263,516,000
Less than 12 months
Number of securities | security	523		231
Fair Value	$ 165,019,000		$ 70,542,000
Unrealized Loss	$ (11,330,000)		$ (1,055,000)
Percentage	6.87%		1.50%
12 months or more
Number of securities | security	29		14
Fair Value	$ 12,751,000		$ 9,248,000
Unrealized Loss	$ (1,241,000)		$ (115,000)
Percentage	9.73%		1.24%
Total
Number of securities | security	552		245
Fair Value	$ 177,770,000		$ 79,790,000
Unrealized Loss	$ (12,571,000)		$ (1,170,000)
Percentage	7.07%		1.47%
Mortgage Backed Securities, Other
Securities available for sale
Securities available for sale, Percent	7.16%		1.71%
Available-for-sale Securities Reconciliation [Abstract]
Amortized Cost	$ 51,481,000		$ 9,575,000
Gross Unrealized Gains	0		0
Gross Unrealized (Losses)	(2,198,000)		(129,000)
Allowance for Credit Losses	0		0
Amortized Cost
Mortgage-backed securities and collateralized mortgage obligations, Amortized Cost	51,481,000
Fair Value
Mortgage-backed securities and collateralized mortgage obligations. Fair Value	49,283,000
Carrying value of investment securities pledged to collateralize short-term borrowings	$ 49,283,000		$ 9,446,000
Less than 12 months
Number of securities | security	14		4
Fair Value	$ 41,797,000		$ 9,446,000
Unrealized Loss	$ (2,198,000)		$ (129,000)
Percentage	5.26%		1.37%
12 months or more
Number of securities | security	0		0
Fair Value	$ 0		$ 0
Unrealized Loss	$ 0		$ 0
Percentage	0.00%		0.00%
Total
Number of securities | security	14		4
Fair Value	$ 41,797,000		$ 9,446,000
Unrealized Loss	$ (2,198,000)		$ (129,000)
Percentage	5.26%		1.37%

Loans (Details)

Loans (Details) - USD ($)	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Jan. 01, 2021	Dec. 31, 2020
Summary of classes of loans (abstract)
Total Loans Receivable	$ 2,687,606,000	$ 2,680,124,000	$ 2,660,233,000
Net unamortized fees and costs	186,000		299,000
Total	2,687,792,000		2,660,532,000
Less allowance for credit losses and loan losses	35,850,000	36,620,000	35,470,000	$ 37,070,000	$ 37,070,000
Loans and receivable, net	2,651,942,000		2,625,062,000
Loans and Leases Receivable, Allowance	35,850,000		35,470,000
financing receivable, allowance for credit loss, change due to economic factors	540,000
Financing Receivable, Allowance for Credit Losses, change due to loan volume	420,000
Financing Receivable, Allowance for Credit Losses, change in prepayment and curtailment rates	240,000
Financing Receivable, Allowance for Credit Losses, change due to historical loss rates	180,000
Impact of ASC 326 Adoption
Summary of classes of loans (abstract)
Less allowance for credit losses and loan losses				$ 2,746,000	2,746,000
Agricultural [Member]
Summary of classes of loans (abstract)
Total Loans Receivable	104,900,000	96,042,000	106,933,000
Total	104,900,000		106,933,000
Less allowance for credit losses and loan losses	2,414,000	2,147,000	2,261,000		2,508,000
Agricultural [Member] | Impact of ASC 326 Adoption
Summary of classes of loans (abstract)
Less allowance for credit losses and loan losses					(328,000)
Commercial and Financial [Member]
Summary of classes of loans (abstract)
Total Loans Receivable	223,702,000	281,337,000	222,002,000
Total	223,702,000		222,002,000
Less allowance for credit losses and loan losses	4,895,000	5,114,000	4,269,000		4,885,000
Commercial and Financial [Member] | Impact of ASC 326 Adoption
Summary of classes of loans (abstract)
Less allowance for credit losses and loan losses					298,000
Commercial and Financial [Member] | Small Business Administration SBA, CARES Act, Paycheck Protection Program
Summary of classes of loans (abstract)
Loans and Leases Receivable, Before Unamortized Fees and Costs	910,000		5,340,000
Interest and fee income, Loans and Leases, PPP Loan fees recognized in income	0	1,880,000
Real Estate Construction One to Four Family Residential [Member]
Summary of classes of loans (abstract)
Total Loans Receivable	87,390,000		80,486,000
Total	87,390,000		80,486,000
Real Estate: Construction, land development and commercial [Member]
Summary of classes of loans (abstract)
Total Loans Receivable	135,353,000		127,021,000
Total	135,353,000		127,021,000
Real Estate: Mortgage, farmland [Member]
Summary of classes of loans (abstract)
Total Loans Receivable	236,573,000	246,665,000	232,744,000
Total	236,573,000		232,744,000
Less allowance for credit losses and loan losses	3,310,000	$ 4,668,000	3,433,000		4,173,000
Real Estate: Mortgage, farmland [Member] | Impact of ASC 326 Adoption
Summary of classes of loans (abstract)
Less allowance for credit losses and loan losses					$ 763,000
Real Estate: Mortgage, 1 to 4 family first liens [Member]
Summary of classes of loans (abstract)
Total Loans Receivable	919,734,000		909,564,000
Total	111,278,000		909,564,000
Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Summary of classes of loans (abstract)
Total Loans Receivable	111,278,000		114,342,000
Total	919,734,000		114,342,000
Real Estate: Mortgage, multi-family [Member]
Summary of classes of loans (abstract)
Total Loans Receivable	381,942,000		382,792,000
Total	381,942,000		382,792,000
Real Estate: Mortgage, commercial [Member]
Summary of classes of loans (abstract)
Total Loans Receivable	404,769,000		401,377,000
Total	404,769,000		401,377,000
Loans to individuals [Member]
Summary of classes of loans (abstract)
Total Loans Receivable	31,568,000		32,687,000
Total	31,568,000		32,687,000
Obligations of state and political subdivisions [Member]
Summary of classes of loans (abstract)
Total Loans Receivable	50,397,000		50,285,000
Total	$ 50,397,000		$ 50,285,000

Loans, Allowance For Credit Los

Loans, Allowance For Credit Losses (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Jan. 01, 2021
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	$ 35,470	$ 37,070
Charge-offs	(339)	(171)
Recoveries	455	715
Provision	264	(3,740)
Ending balance	35,850	36,620
Ending balance, individually evaluated for impairment	605	607
Ending balance, collectively evaluated for impairment	35,245	36,013
Loan [Abstract]
Total Loans Receivable	2,687,606	2,680,124	$ 2,660,233
Ending balance, individually evaluated for impairment	15,773	19,333
Ending balance, collectively evaluated for impairment	2,671,833	2,660,791
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance, prior to adoption of ASC 326	3,850	0
Impact of adopting ASC 326	4,690	4,340	3,850	$ 0
Credit loss expense	840	756
(Charge-offs), net recoveries	0	0
Ending balance	4,690	4,340
Impact of ASC 326 Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		2,746
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance, prior to adoption of ASC 326		3,584
Impact of adopting ASC 326				$ 3,584
Agricultural [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	2,261	2,508
Charge-offs	0	0
Recoveries	14	32
Provision	139	(65)
Ending balance	2,414	2,147
Ending balance, individually evaluated for impairment	1	1
Ending balance, collectively evaluated for impairment	2,413	2,146
Loan [Abstract]
Total Loans Receivable	104,900	96,042	106,933
Ending balance, individually evaluated for impairment	581	1,387
Ending balance, collectively evaluated for impairment	104,319	94,655
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance, prior to adoption of ASC 326	383	0
Impact of adopting ASC 326	513	443	383
Credit loss expense	130	58
(Charge-offs), net recoveries	0	0
Ending balance	513	443
Agricultural [Member] | Impact of ASC 326 Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		(328)
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance, prior to adoption of ASC 326		385
Impact of adopting ASC 326
Commercial and Financial [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	4,269	4,885
Charge-offs	(48)	(30)
Recoveries	123	234
Provision	551	(273)
Ending balance	4,895	5,114
Ending balance, individually evaluated for impairment	191	299
Ending balance, collectively evaluated for impairment	4,704	4,815
Loan [Abstract]
Total Loans Receivable	223,702	281,337	222,002
Ending balance, individually evaluated for impairment	1,981	1,947
Ending balance, collectively evaluated for impairment	221,721	279,390
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance, prior to adoption of ASC 326	1,118	0
Impact of adopting ASC 326	1,420	1,824	1,118
Credit loss expense	302	239
(Charge-offs), net recoveries	0	0
Ending balance	1,420	1,824
Commercial and Financial [Member] | Impact of ASC 326 Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		298
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance, prior to adoption of ASC 326		1,585
Impact of adopting ASC 326
Real Estate: Construction and land development [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	2,300	2,319
Charge-offs	0	0
Recoveries	3	34
Provision	44	(392)
Ending balance	2,347	2,288
Ending balance, individually evaluated for impairment	59	0
Ending balance, collectively evaluated for impairment	2,288	2,288
Loan [Abstract]
Total Loans Receivable	222,743	184,012
Ending balance, individually evaluated for impairment	1,040	521
Ending balance, collectively evaluated for impairment	221,703	183,491
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance, prior to adoption of ASC 326	849	0
Impact of adopting ASC 326	1,126	933	849
Credit loss expense	277	197
(Charge-offs), net recoveries	0	0
Ending balance	1,126	933
Real Estate: Construction and land development [Member] | Impact of ASC 326 Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		327
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance, prior to adoption of ASC 326		736
Impact of adopting ASC 326
Real Estate: Mortgage, farmland [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	3,433	4,173
Charge-offs	0	0
Recoveries	43	0
Provision	(166)	(268)
Ending balance	3,310	4,668
Ending balance, individually evaluated for impairment	1	0
Ending balance, collectively evaluated for impairment	3,309	4,668
Loan [Abstract]
Total Loans Receivable	236,573	246,665	232,744
Ending balance, individually evaluated for impairment	1,276	1,916
Ending balance, collectively evaluated for impairment	235,297	244,749
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance, prior to adoption of ASC 326	113	0
Impact of adopting ASC 326	100	202	113
Credit loss expense	(13)	22
(Charge-offs), net recoveries	0	0
Ending balance	100	202
Real Estate: Mortgage, farmland [Member] | Impact of ASC 326 Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		763
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance, prior to adoption of ASC 326		180
Impact of adopting ASC 326
Real Estate: Mortgage, 1 to 4 family [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	11,498	12,368
Charge-offs	(140)	(75)
Recoveries	207	239
Provision	(127)	(1,558)
Ending balance	11,438	11,496
Ending balance, individually evaluated for impairment	40	62
Ending balance, collectively evaluated for impairment	11,398	11,434
Loan [Abstract]
Total Loans Receivable	1,031,012	996,379
Ending balance, individually evaluated for impairment	5,582	7,338
Ending balance, collectively evaluated for impairment	1,025,430	989,041
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance, prior to adoption of ASC 326	794	0
Impact of adopting ASC 326	925	646	794
Credit loss expense	131	175
(Charge-offs), net recoveries	0	0
Ending balance	925	646
Real Estate: Mortgage, 1 to 4 family [Member] | Impact of ASC 326 Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		522
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance, prior to adoption of ASC 326		471
Impact of adopting ASC 326
Real Estate: Mortgage, multi-family and commercial [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	10,498	9,415
Charge-offs	(1)	0
Recoveries	22	139
Provision	(285)	(1,329)
Ending balance	10,234	9,621
Ending balance, individually evaluated for impairment	312	166
Ending balance, collectively evaluated for impairment	9,922	9,455
Loan [Abstract]
Total Loans Receivable	786,711	790,831
Ending balance, individually evaluated for impairment	5,154	6,145
Ending balance, collectively evaluated for impairment	781,557	784,686
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance, prior to adoption of ASC 326	559	0
Impact of adopting ASC 326	593	250	559
Credit loss expense	34	38
(Charge-offs), net recoveries	0	0
Ending balance	593	250
Real Estate: Mortgage, multi-family and commercial [Member] | Impact of ASC 326 Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		1,396
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance, prior to adoption of ASC 326		212
Impact of adopting ASC 326
Others [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance	1,211	1,402
Charge-offs	(150)	(66)
Recoveries	43	37
Provision	108	145
Ending balance	1,212	1,286
Ending balance, individually evaluated for impairment	1	79
Ending balance, collectively evaluated for impairment	1,211	1,207
Loan [Abstract]
Total Loans Receivable	81,965	84,858
Ending balance, individually evaluated for impairment	159	79
Ending balance, collectively evaluated for impairment	81,806	84,779
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance, prior to adoption of ASC 326	34	0
Impact of adopting ASC 326	13	42	$ 34
Credit loss expense	(21)	27
(Charge-offs), net recoveries	0	0
Ending balance	$ 13	42
Others [Member] | Impact of ASC 326 Adoption
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning balance		(232)
Off-Balance Sheet, Credit Loss, Liability [Roll Forward]
Beginning balance, prior to adoption of ASC 326		$ 15
Impact of adopting ASC 326

Loans, Credit Quality Indicator

Loans, Credit Quality Indicators (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Receivable	$ 2,687,606	$ 2,660,233	$ 2,680,124
Summary of credit quality indicators by type of loans [Abstract]
Total	2,687,792	2,660,532
Agricultural [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Receivable	104,900	106,933	96,042
Summary of credit quality indicators by type of loans [Abstract]
2020	15,517	23,275
2019	18,776	13,481
2018	8,601	3,395
2017	3,204	2,591
2016	2,447	626
Prior	819	345
Revolving Loans Amortized Cost Basis	55,536	63,220
Total	104,900	106,933
Commercial and Financial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Receivable	223,702	222,002	281,337
Summary of credit quality indicators by type of loans [Abstract]
2020	25,558	79,683
2019	65,729	36,555
2018	31,286	13,003
2017	9,637	6,150
2016	5,498	2,904
Prior	4,327	2,245
Revolving Loans Amortized Cost Basis	81,667	81,462
Total	223,702	222,002
Real Estate Construction One to Four Family Residential [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Receivable	87,390	80,486
Summary of credit quality indicators by type of loans [Abstract]
2020	1,306	9,087
2019	15,141	94
2018	0	0
2017	0	0
2016	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	70,943	71,305
Total	87,390	80,486
Real Estate: Construction, land development and commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Receivable	135,353	127,021
Summary of credit quality indicators by type of loans [Abstract]
2020	12,277	44,489
2019	32,668	6,399
2018	4,831	2,556
2017	1,563	301
2016	297	1,451
Prior	1,574	267
Revolving Loans Amortized Cost Basis	82,143	71,558
Total	135,353	127,021
Real Estate: Mortgage, farmland [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Receivable	236,573	232,744	$ 246,665
Summary of credit quality indicators by type of loans [Abstract]
2020	60,845	83,312
2019	72,786	71,152
2018	41,235	12,766
2017	10,642	14,826
2016	10,415	15,209
Prior	21,958	17,564
Revolving Loans Amortized Cost Basis	18,692	17,915
Total	236,573	232,744
Real Estate: Mortgage, 1 to 4 family first liens [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Receivable	919,734	909,564
Summary of credit quality indicators by type of loans [Abstract]
2020	2,386	271,633
2019	13,666	241,007
2018	11,756	79,642
2017	5,606	77,761
2016	6,901	73,046
Prior	11,096	151,468
Revolving Loans Amortized Cost Basis	59,867	15,007
Total	111,278	909,564
Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Receivable	111,278	114,342
Summary of credit quality indicators by type of loans [Abstract]
2020	87,289	14,383
2019	256,686	12,671
2018	214,963	6,134
2017	71,236	8,171
2016	71,453	5,594
Prior	202,140	7,025
Revolving Loans Amortized Cost Basis	15,967	60,364
Total	919,734	114,342
Real Estate: Mortgage, multi-family [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Receivable	381,942	382,792
Summary of credit quality indicators by type of loans [Abstract]
2020	63,204	165,576
2019	161,318	145,082
2018	98,364	16,186
2017	9,604	2,030
2016	830	1,692
Prior	26,383	31,793
Revolving Loans Amortized Cost Basis	22,239	20,433
Total	381,942	382,792
Real Estate: Mortgage, commercial [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Receivable	404,769	401,377
Summary of credit quality indicators by type of loans [Abstract]
2020	47,156	121,763
2019	116,258	158,497
2018	133,953	21,572
2017	20,893	15,857
2016	13,951	20,422
Prior	41,027	33,733
Revolving Loans Amortized Cost Basis	31,531	29,533
Total	404,769	401,377
Loans to individuals [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Receivable	31,568	32,687
Summary of credit quality indicators by type of loans [Abstract]
2020	3,215	12,411
2019	10,445	5,822
2018	4,638	2,335
2017	1,879	1,038
2016	790	150
Prior	10,538	10,870
Revolving Loans Amortized Cost Basis	63	61
Total	31,568	32,687
Obligations of state and political subdivisions [Member]
Financing Receivable, Credit Quality Indicator [Line Items]
Total Loans Receivable	50,397	50,285
Summary of credit quality indicators by type of loans [Abstract]
2020	909	1,009
2019	1,006	4,951
2018	4,892	1,754
2017	1,741	955
2016	936	11,557
Prior	31,651	20,659
Revolving Loans Amortized Cost Basis	9,262	9,400
Total	50,397	50,285
Excellent [Member] | Agricultural [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	603	762
2019	327	213
2018	254	30
2017	77	10
2016	7	0
Prior	0	0
Revolving Loans Amortized Cost Basis	3,147	2,312
Total	4,415	3,327
Excellent [Member] | Commercial and Financial [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	446	965
2019	893	924
2018	645	4
2017	4	235
2016	235	31
Prior	19	0
Revolving Loans Amortized Cost Basis	3,733	3,391
Total	5,975	5,550
Excellent [Member] | Real Estate Construction One to Four Family Residential [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	0	0
2019	0	0
2018	0	0
2017	0	0
2016	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	2	0
Total	2	0
Excellent [Member] | Real Estate: Construction, land development and commercial [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	0	5,079
2019	5,079	0
2018	0	0
2017	0	0
2016	0	143
Prior	142	4
Revolving Loans Amortized Cost Basis	0	0
Total	5,221	5,226
Excellent [Member] | Real Estate: Mortgage, farmland [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	2,433	0
2019	105	3,568
2018	1,216	124
2017	120	60
2016	0	80
Prior	41	41
Revolving Loans Amortized Cost Basis	130	134
Total	4,045	4,007
Excellent [Member] | Real Estate: Mortgage, 1 to 4 family first liens [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	0	462
2019	0	914
2018	12	427
2017	0	19
2016	0	149
Prior	0	404
Revolving Loans Amortized Cost Basis	6	1
Total	18	2,376
Excellent [Member] | Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	644	0
2019	459	13
2018	902	0
2017	0	0
2016	16	0
Prior	542	0
Revolving Loans Amortized Cost Basis	1	6
Total	2,564	19
Excellent [Member] | Real Estate: Mortgage, multi-family [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	0	2,539
2019	2,516	4,513
2018	4,454	0
2017	0	0
2016	0	0
Prior	685	701
Revolving Loans Amortized Cost Basis	0	0
Total	7,655	7,753
Excellent [Member] | Real Estate: Mortgage, commercial [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	2,257	597
2019	592	16,781
2018	16,530	0
2017	0	0
2016	0	3,313
Prior	1,265	350
Revolving Loans Amortized Cost Basis	0	1
Total	20,644	21,042
Excellent [Member] | Loans to individuals [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	0	0
2019	0	0
2018	0	0
2017	0	0
2016	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Excellent [Member] | Obligations of state and political subdivisions [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	0	0
2019	0	0
2018	0	0
2017	0	0
2016	0	0
Prior	5,891	6,076
Revolving Loans Amortized Cost Basis	0	0
Total	5,891	6,076
Good [Member] | Agricultural [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	687	1,799
2019	1,401	1,767
2018	1,317	603
2017	516	46
2016	44	52
Prior	61	26
Revolving Loans Amortized Cost Basis	4,540	7,593
Total	8,566	11,886
Good [Member] | Commercial and Financial [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	4,017	13,722
2019	11,951	5,570
2018	4,446	1,105
2017	910	1,086
2016	1,006	276
Prior	1,597	1,494
Revolving Loans Amortized Cost Basis	12,291	20,709
Total	36,218	43,962
Good [Member] | Real Estate Construction One to Four Family Residential [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	212	212
2019	6,392	0
2018	0	0
2017	0	0
2016	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	20,175	18,755
Total	26,779	18,967
Good [Member] | Real Estate: Construction, land development and commercial [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	397	3,294
2019	3,187	1,200
2018	1,200	0
2017	0	0
2016	0	153
Prior	389	242
Revolving Loans Amortized Cost Basis	13,677	12,678
Total	18,850	17,567
Good [Member] | Real Estate: Mortgage, farmland [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	12,731	17,827
2019	14,659	14,308
2018	8,210	2,144
2017	1,701	2,460
2016	1,636	5,932
Prior	6,096	3,929
Revolving Loans Amortized Cost Basis	5,421	3,844
Total	50,454	50,444
Good [Member] | Real Estate: Mortgage, 1 to 4 family first liens [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	0	9,598
2019	192	12,300
2018	602	3,124
2017	95	3,443
2016	0	3,091
Prior	574	10,943
Revolving Loans Amortized Cost Basis	1,283	2,496
Total	2,746	44,995
Good [Member] | Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	9,029	193
2019	5,053	611
2018	10,100	96
2017	2,619	0
2016	2,244	108
Prior	11,867	482
Revolving Loans Amortized Cost Basis	2,351	1,374
Total	43,263	2,864
Good [Member] | Real Estate: Mortgage, multi-family [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	18,198	16,931
2019	16,696	35,396
2018	17,796	1,555
2017	1,514	0
2016	0	0
Prior	9,038	9,289
Revolving Loans Amortized Cost Basis	0	0
Total	63,242	63,171
Good [Member] | Real Estate: Mortgage, commercial [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	9,513	20,143
2019	24,182	36,773
2018	23,478	2,619
2017	2,569	1,356
2016	1,335	3,811
Prior	8,000	7,085
Revolving Loans Amortized Cost Basis	9,697	9,812
Total	78,774	81,599
Good [Member] | Loans to individuals [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	0	0
2019	0	0
2018	0	67
2017	49	21
2016	0	5
Prior	4	0
Revolving Loans Amortized Cost Basis	1	1
Total	54	94
Good [Member] | Obligations of state and political subdivisions [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	0	0
2019	0	1,984
2018	1,956	0
2017	0	0
2016	0	0
Prior	8,874	9,051
Revolving Loans Amortized Cost Basis	0	0
Total	10,830	11,035
Satisfactory [Member] | Agricultural [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	5,221	10,335
2019	9,284	6,404
2018	3,785	1,476
2017	1,389	1,770
2016	1,667	403
Prior	349	66
Revolving Loans Amortized Cost Basis	23,079	26,285
Total	44,774	46,739
Satisfactory [Member] | Commercial and Financial [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	14,016	44,964
2019	38,285	20,847
2018	17,383	7,684
2017	6,670	3,582
2016	3,228	2,106
Prior	1,883	331
Revolving Loans Amortized Cost Basis	43,972	41,832
Total	125,437	121,346
Satisfactory [Member] | Real Estate Construction One to Four Family Residential [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	1,070	7,457
2019	7,775	94
2018	0	0
2017	0	0
2016	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	40,258	42,988
Total	49,103	50,539
Satisfactory [Member] | Real Estate: Construction, land development and commercial [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	4,234	22,907
2019	18,360	4,354
2018	3,030	2,356
2017	1,556	263
2016	260	1,081
Prior	970	21
Revolving Loans Amortized Cost Basis	50,683	40,048
Total	79,093	71,030
Satisfactory [Member] | Real Estate: Mortgage, farmland [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	23,507	51,639
2019	48,441	35,616
2018	24,613	4,689
2017	4,433	8,358
2016	8,047	6,745
Prior	12,175	8,339
Revolving Loans Amortized Cost Basis	8,837	8,242
Total	130,053	123,628
Satisfactory [Member] | Real Estate: Mortgage, 1 to 4 family first liens [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	2,339	233,412
2019	13,008	189,247
2018	9,387	69,037
2017	5,330	65,201
2016	6,453	60,906
Prior	9,864	118,608
Revolving Loans Amortized Cost Basis	54,691	8,443
Total	101,072	744,854
Satisfactory [Member] | Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	70,049	13,684
2019	223,599	10,116
2018	166,255	5,854
2017	61,627	7,309
2016	60,498	5,230
Prior	163,853	6,053
Revolving Loans Amortized Cost Basis	9,028	55,496
Total	754,909	103,742
Satisfactory [Member] | Real Estate: Mortgage, multi-family [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	29,143	107,192
2019	105,764	69,287
2018	42,587	13,635
2017	7,097	2,030
2016	830	1,561
Prior	15,286	14,660
Revolving Loans Amortized Cost Basis	16,832	14,764
Total	217,539	223,129
Satisfactory [Member] | Real Estate: Mortgage, commercial [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	24,862	75,040
2019	69,705	52,653
2018	43,704	14,727
2017	14,146	12,091
2016	10,953	9,707
Prior	21,227	17,398
Revolving Loans Amortized Cost Basis	18,468	16,333
Total	203,065	197,949
Satisfactory [Member] | Loans to individuals [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	3,032	12,162
2019	10,144	5,606
2018	4,475	2,212
2017	1,785	967
2016	746	141
Prior	10,533	10,867
Revolving Loans Amortized Cost Basis	59	57
Total	30,774	32,012
Satisfactory [Member] | Obligations of state and political subdivisions [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	909	1,009
2019	1,006	2,034
2018	2,012	1,551
2017	1,544	706
2016	691	11,557
Prior	15,033	3,634
Revolving Loans Amortized Cost Basis	9,261	9,400
Total	30,456	29,891
Monitor [Member] | Agricultural [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	8,817	8,125
2019	5,899	5,017
2018	3,187	998
2017	943	765
2016	729	164
Prior	409	253
Revolving Loans Amortized Cost Basis	21,817	23,995
Total	41,801	39,317
Monitor [Member] | Commercial and Financial [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	5,544	18,337
2019	13,845	8,019
2018	8,343	3,591
2017	1,837	1,123
2016	967	297
Prior	652	416
Revolving Loans Amortized Cost Basis	19,472	13,368
Total	50,660	45,151
Monitor [Member] | Real Estate Construction One to Four Family Residential [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	24	1,307
2019	869	0
2018	0	0
2017	0	0
2016	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	9,915	9,187
Total	10,808	10,494
Monitor [Member] | Real Estate: Construction, land development and commercial [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	646	5,694
2019	5,851	547
2018	306	7
2017	7	38
2016	37	74
Prior	73	0
Revolving Loans Amortized Cost Basis	17,782	18,832
Total	24,702	25,192
Monitor [Member] | Real Estate: Mortgage, farmland [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	18,502	8,532
2019	8,079	16,925
2018	6,555	5,518
2017	4,099	3,901
2016	685	2,154
Prior	3,222	4,866
Revolving Loans Amortized Cost Basis	4,303	5,695
Total	45,445	47,591
Monitor [Member] | Real Estate: Mortgage, 1 to 4 family first liens [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	26	24,908
2019	271	33,863
2018	1,058	5,038
2017	69	6,527
2016	296	7,273
Prior	367	12,203
Revolving Loans Amortized Cost Basis	3,338	4,066
Total	5,425	93,878
Monitor [Member] | Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	6,752	326
2019	24,317	1,233
2018	32,624	70
2017	4,858	365
2016	6,041	140
Prior	15,512	281
Revolving Loans Amortized Cost Basis	4,501	2,801
Total	94,605	5,216
Monitor [Member] | Real Estate: Mortgage, multi-family [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	15,863	26,088
2019	23,598	35,886
2018	33,527	176
2017	174	0
2016	0	131
Prior	1,374	1,584
Revolving Loans Amortized Cost Basis	5,407	5,669
Total	79,943	69,534
Monitor [Member] | Real Estate: Mortgage, commercial [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	10,524	18,664
2019	14,281	49,774
2018	48,020	3,923
2017	3,877	2,202
2016	1,460	3,037
Prior	9,633	8,461
Revolving Loans Amortized Cost Basis	3,366	3,387
Total	91,161	89,448
Monitor [Member] | Loans to individuals [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	164	200
2019	231	160
2018	97	15
2017	27	46
2016	41	3
Prior	1	0
Revolving Loans Amortized Cost Basis	2	1
Total	563	425
Monitor [Member] | Obligations of state and political subdivisions [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	0	0
2019	0	933
2018	924	203
2017	197	249
2016	245	0
Prior	1,853	1,898
Revolving Loans Amortized Cost Basis	1	0
Total	3,220	3,283
Special Mention [Member] | Agricultural [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	189	1,662
2019	1,652	11
2018	5	85
2017	177	0
2016	0	7
Prior	0	0
Revolving Loans Amortized Cost Basis	2,753	2,807
Total	4,776	4,572
Special Mention [Member] | Commercial and Financial [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	219	603
2019	305	525
2018	469	353
2017	127	70
2016	62	102
Prior	85	4
Revolving Loans Amortized Cost Basis	211	174
Total	1,478	1,831
Special Mention [Member] | Real Estate Construction One to Four Family Residential [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	0	0
2019	0	0
2018	0	0
2017	0	0
2016	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	593	374
Total	593	374
Special Mention [Member] | Real Estate: Construction, land development and commercial [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	0	0
2019	0	0
2018	0	0
2017	0	0
2016	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Special Mention [Member] | Real Estate: Mortgage, farmland [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	3,672	4,031
2019	439	288
2018	284	0
2017	289	0
2016	0	298
Prior	230	190
Revolving Loans Amortized Cost Basis	0	0
Total	4,914	4,807
Special Mention [Member] | Real Estate: Mortgage, 1 to 4 family first liens [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	21	1,682
2019	107	3,422
2018	491	887
2017	34	962
2016	51	1,051
Prior	168	3,168
Revolving Loans Amortized Cost Basis	111	0
Total	983	11,172
Special Mention [Member] | Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	131	103
2019	1,713	489
2018	3,266	35
2017	1,200	56
2016	1,114	42
Prior	4,533	110
Revolving Loans Amortized Cost Basis	85	142
Total	12,042	977
Special Mention [Member] | Real Estate: Mortgage, multi-family [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	0	640
2019	632	0
2018	0	820
2017	819	0
2016	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	1,451	1,460
Special Mention [Member] | Real Estate: Mortgage, commercial [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	0	5,791
2019	6,372	795
2018	516	303
2017	171	0
2016	0	554
Prior	801	337
Revolving Loans Amortized Cost Basis	0	0
Total	7,860	7,780
Special Mention [Member] | Loans to individuals [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	8	37
2019	49	32
2018	27	29
2017	8	4
2016	3	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	1
Total	95	103
Special Mention [Member] | Obligations of state and political subdivisions [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	0	0
2019	0	0
2018	0	0
2017	0	0
2016	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	0	0
Substandard [Member] | Agricultural [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	0	592
2019	213	69
2018	53	203
2017	102	0
2016	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	200	228
Total	568	1,092
Substandard [Member] | Commercial and Financial [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	1,316	1,092
2019	450	670
2018	0	266
2017	89	54
2016	0	92
Prior	91	0
Revolving Loans Amortized Cost Basis	1,988	1,988
Total	3,934	4,162
Substandard [Member] | Real Estate Construction One to Four Family Residential [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	0	111
2019	105	0
2018	0	0
2017	0	0
2016	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	1
Total	105	112
Substandard [Member] | Real Estate: Construction, land development and commercial [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	7,000	7,515
2019	191	298
2018	295	193
2017	0	0
2016	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	1	0
Total	7,487	8,006
Substandard [Member] | Real Estate: Mortgage, farmland [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	0	1,283
2019	1,063	447
2018	357	291
2017	0	47
2016	47	0
Prior	194	199
Revolving Loans Amortized Cost Basis	1	0
Total	1,662	2,267
Substandard [Member] | Real Estate: Mortgage, 1 to 4 family first liens [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	0	1,571
2019	88	1,261
2018	206	1,129
2017	78	1,609
2016	101	576
Prior	123	6,142
Revolving Loans Amortized Cost Basis	438	1
Total	1,033	12,289
Substandard [Member] | Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	684	77
2019	1,545	209
2018	1,816	79
2017	932	441
2016	1,540	74
Prior	5,833	99
Revolving Loans Amortized Cost Basis	1	545
Total	12,351	1,524
Substandard [Member] | Real Estate: Mortgage, multi-family [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	0	12,186
2019	12,112	0
2018	0	0
2017	0	0
2016	0	0
Prior	0	5,559
Revolving Loans Amortized Cost Basis	0	0
Total	12,112	17,745
Substandard [Member] | Real Estate: Mortgage, commercial [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	0	1,528
2019	1,126	1,721
2018	1,705	0
2017	130	208
2016	203	0
Prior	101	102
Revolving Loans Amortized Cost Basis	0	0
Total	3,265	3,559
Substandard [Member] | Loans to individuals [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	11	12
2019	21	24
2018	39	12
2017	10	0
2016	0	1
Prior	0	3
Revolving Loans Amortized Cost Basis	1	1
Total	82	53
Substandard [Member] | Obligations of state and political subdivisions [Member]
Summary of credit quality indicators by type of loans [Abstract]
2020	0	0
2019	0	0
2018	0	0
2017	0	0
2016	0	0
Prior	0	0
Revolving Loans Amortized Cost Basis	0	0
Total	$ 0	$ 0

Loans, Past Due Receivables (De

Loans, Past Due Receivables (Details) $ in Thousands	Mar. 31, 2022USD ($)	Dec. 31, 2021USD ($)	Mar. 31, 2021USD ($)
Financing Receivable, Past Due [Line Items]
Number of accruing loans past due 90 days or more	10	6
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	$ 2,687,792	$ 2,660,532
Total Loans Receivable	2,687,606	2,660,233	$ 2,680,124
Accruing Loans Past Due 90 Days or More	878	201
Agricultural [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	104,900	106,933
Total Loans Receivable	104,900	106,933	96,042
Accruing Loans Past Due 90 Days or More	40	6
Commercial and Financial [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	223,702	222,002
Total Loans Receivable	223,702	222,002	281,337
Accruing Loans Past Due 90 Days or More	102	91
Real Estate Construction One to Four Family Residential [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	87,390	80,486
Total Loans Receivable	87,390	80,486
Accruing Loans Past Due 90 Days or More	383	0
Real Estate: Construction, land development and commercial [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	135,353	127,021
Total Loans Receivable	135,353	127,021
Accruing Loans Past Due 90 Days or More	66	0
Real Estate: Mortgage, farmland [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	236,573	232,744
Total Loans Receivable	236,573	232,744	$ 246,665
Accruing Loans Past Due 90 Days or More	60	0
Real Estate: Mortgage, 1 to 4 family first liens [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	111,278	909,564
Total Loans Receivable	919,734	909,564
Accruing Loans Past Due 90 Days or More	68	104
Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	919,734	114,342
Total Loans Receivable	111,278	114,342
Accruing Loans Past Due 90 Days or More	0	0
Real Estate: Mortgage, multi-family [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	381,942	382,792
Total Loans Receivable	381,942	382,792
Accruing Loans Past Due 90 Days or More	0	0
Real Estate: Mortgage, commercial [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	404,769	401,377
Total Loans Receivable	404,769	401,377
Accruing Loans Past Due 90 Days or More	0	0
Loans to individuals [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	31,568	32,687
Total Loans Receivable	31,568	32,687
Accruing Loans Past Due 90 Days or More	0	0
State and political subdivisions [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	50,397	50,285
Total Loans Receivable	50,397	50,285
Accruing Loans Past Due 90 Days or More	159	0
30 - 59 Days Past Due [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	17,758	8,322
30 - 59 Days Past Due [Member] | Agricultural [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	1,860	41
30 - 59 Days Past Due [Member] | Commercial and Financial [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	2,394	300
30 - 59 Days Past Due [Member] | Real Estate Construction One to Four Family Residential [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	1,013	276
30 - 59 Days Past Due [Member] | Real Estate: Construction, land development and commercial [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	559	194
30 - 59 Days Past Due [Member] | Real Estate: Mortgage, farmland [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	3,221	503
30 - 59 Days Past Due [Member] | Real Estate: Mortgage, 1 to 4 family first liens [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	6,038	5,085
30 - 59 Days Past Due [Member] | Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	268	246
30 - 59 Days Past Due [Member] | Real Estate: Mortgage, multi-family [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	0	640
30 - 59 Days Past Due [Member] | Real Estate: Mortgage, commercial [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	2,258	466
30 - 59 Days Past Due [Member] | Loans to individuals [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	147	177
30 - 59 Days Past Due [Member] | State and political subdivisions [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	0	394
60 - 89 Days Past Due [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	2,138	1,896
60 - 89 Days Past Due [Member] | Agricultural [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	253	0
60 - 89 Days Past Due [Member] | Commercial and Financial [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	700	537
60 - 89 Days Past Due [Member] | Real Estate Construction One to Four Family Residential [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	0	0
60 - 89 Days Past Due [Member] | Real Estate: Construction, land development and commercial [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	391	66
60 - 89 Days Past Due [Member] | Real Estate: Mortgage, farmland [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	160	362
60 - 89 Days Past Due [Member] | Real Estate: Mortgage, 1 to 4 family first liens [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	621	864
60 - 89 Days Past Due [Member] | Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	0	41
60 - 89 Days Past Due [Member] | Real Estate: Mortgage, multi-family [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	0	0
60 - 89 Days Past Due [Member] | Real Estate: Mortgage, commercial [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	2	0
60 - 89 Days Past Due [Member] | Loans to individuals [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	11	26
60 - 89 Days Past Due [Member] | State and political subdivisions [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	0	0
90 Days or More Past Due [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	4,324	4,222
90 Days or More Past Due [Member] | Agricultural [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	252	219
90 Days or More Past Due [Member] | Commercial and Financial [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	109	468
90 Days or More Past Due [Member] | Real Estate Construction One to Four Family Residential [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	383	0
90 Days or More Past Due [Member] | Real Estate: Construction, land development and commercial [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	163	96
90 Days or More Past Due [Member] | Real Estate: Mortgage, farmland [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	107	0
90 Days or More Past Due [Member] | Real Estate: Mortgage, 1 to 4 family first liens [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	2,071	2,481
90 Days or More Past Due [Member] | Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	121	124
90 Days or More Past Due [Member] | Real Estate: Mortgage, multi-family [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	0	0
90 Days or More Past Due [Member] | Real Estate: Mortgage, commercial [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	959	829
90 Days or More Past Due [Member] | Loans to individuals [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	0	5
90 Days or More Past Due [Member] | State and political subdivisions [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	159	0
Financial Asset, Past Due
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	24,220	14,440
Financial Asset, Past Due | Agricultural [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	2,365	260
Financial Asset, Past Due | Commercial and Financial [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	3,203	1,305
Financial Asset, Past Due | Real Estate Construction One to Four Family Residential [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	1,396	276
Financial Asset, Past Due | Real Estate: Construction, land development and commercial [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	1,113	356
Financial Asset, Past Due | Real Estate: Mortgage, farmland [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	3,488	865
Financial Asset, Past Due | Real Estate: Mortgage, 1 to 4 family first liens [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	8,730	8,430
Financial Asset, Past Due | Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	389	411
Financial Asset, Past Due | Real Estate: Mortgage, multi-family [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	0	640
Financial Asset, Past Due | Real Estate: Mortgage, commercial [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	3,219	1,295
Financial Asset, Past Due | Loans to individuals [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	158	208
Financial Asset, Past Due | State and political subdivisions [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	159	394
Financial Asset, Not Past Due
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	2,663,386	2,645,793
Financial Asset, Not Past Due | Agricultural [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	102,535	106,673
Financial Asset, Not Past Due | Commercial and Financial [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	220,499	220,697
Financial Asset, Not Past Due | Real Estate Construction One to Four Family Residential [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	85,994	80,210
Financial Asset, Not Past Due | Real Estate: Construction, land development and commercial [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	134,240	126,665
Financial Asset, Not Past Due | Real Estate: Mortgage, farmland [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	233,085	231,879
Financial Asset, Not Past Due | Real Estate: Mortgage, 1 to 4 family first liens [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	911,004	901,134
Financial Asset, Not Past Due | Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	110,889	113,931
Financial Asset, Not Past Due | Real Estate: Mortgage, multi-family [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	381,942	382,152
Financial Asset, Not Past Due | Real Estate: Mortgage, commercial [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	401,550	400,082
Financial Asset, Not Past Due | Loans to individuals [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	31,410	32,479
Financial Asset, Not Past Due | State and political subdivisions [Member]
Schedule of past due loans [Abstract]
Financing Receivable, before Allowance for Credit Loss	$ 50,238	$ 49,891

Loans, Impaired Financing Recei

Loans, Impaired Financing Receivable Loan Type (Details) $ in Thousands	3 Months Ended
	Mar. 31, 2022USD ($)	Dec. 31, 2021USD ($)
Summary of certain impaired loan information [Abstract]
Non-accrual loans	$ 8,142	$ 8,491
Accruing loans past due 90 days or more	878	201
TDR loans	6,753	$ 7,921
Decrease accruing loans past due 90 days or more	$ 680
Number of accruing loans past due 90 days or more	10	6
Average 90 days or more past due loan balance	$ 90	$ 30
Agricultural [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	221	221
Accruing loans past due 90 days or more	40	6
TDR loans	138	374
Commercial and financial [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	918	707
Accruing loans past due 90 days or more	102	91
TDR loans	740	1,085
Real Estate Construction One to Four Family Residential [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	104	111
Accruing loans past due 90 days or more	383	0
TDR loans	0	0
Real Estate: Construction, land development and commercial [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	287	290
Accruing loans past due 90 days or more	66	0
TDR loans	199	202
Real Estate: Mortgage, farmland [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	52	251
Accruing loans past due 90 days or more	60	0
TDR loans	1,165	1,206
Real Estate: Mortgage, 1 to 4 family first liens [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	4,234	4,685
Accruing loans past due 90 days or more	68	104
TDR loans	1,316	1,364
Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	196	200
Accruing loans past due 90 days or more	0	0
TDR loans	19	20
Real Estate: Mortgage, multi-family [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	0	0
Accruing loans past due 90 days or more	0	0
TDR loans	1,451	1,460
Real Estate: Mortgage, commercial [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	2,130	2,026
Accruing loans past due 90 days or more	0	0
TDR loans	1,725	2,210
Loans to individuals [Member]
Summary of certain impaired loan information [Abstract]
Accruing loans past due 90 days or more	0	0
Troubled Debt Restructuring [Member]
Summary of certain impaired loan information [Abstract]
TDR Loans included within nonaccrual loans	3,430	2,280
Obligations of state and political subdivisions [Member]
Summary of certain impaired loan information [Abstract]
Non-accrual loans	0	0
Accruing loans past due 90 days or more	159	0
TDR loans	$ 0	$ 0

Loans, Troubled Debt Restructur

Loans, Troubled Debt Restructuring (Details) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended
	Mar. 31, 2022USD ($)contractloan	Jun. 30, 2021USD ($)contract	Dec. 31, 2021USD ($)loan
Summary of information for TDR loans [Abstract]
Number of contracts | contract	47	50
Recorded investment	$ 10,183		$ 10,197
Commitments outstanding	$ 160		60
Summary of troubled debt restructuring loans were modified [Abstract]
Number of contracts | contract	4
Pre-modification recorded investment	$ 941
Post-modification recorded investment	941
Allowance for TDR loans	550
Commitments to lend additional borrowings	$ 160		$ 60
Number of TDR loans default payment | loan	0		0
COVID-19 Related
Summary of troubled debt restructuring loans were modified [Abstract]
Financing Receivable, Modifications, Principal Deferred, Number Of Loans | loan	16		16
Financing Receivable, Modifications, Principal Deferred	$ 9,300	$ 9,400
Financing Receivable, Modifications, Payment Deferrals At Period End, Total Loans, Percent	0.22%		0.12%
Agricultural [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	3	4
Recorded investment	$ 351		$ 586
Commitments outstanding	$ 160		0
Summary of troubled debt restructuring loans were modified [Abstract]
Number of contracts | contract	0
Pre-modification recorded investment	$ 0
Post-modification recorded investment	$ 0
Commercial and Financial [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	11	12
Recorded investment	$ 1,644		1,116
Commitments outstanding	$ 0		60
Summary of troubled debt restructuring loans were modified [Abstract]
Number of contracts | contract	1
Pre-modification recorded investment	$ 371
Post-modification recorded investment	$ 371
Real Estate Construction One to Four Family Residential [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	1	0
Recorded investment	$ 105		0
Commitments outstanding	$ 0		0
Summary of troubled debt restructuring loans were modified [Abstract]
Number of contracts | contract	1
Pre-modification recorded investment	$ 105
Post-modification recorded investment	$ 105
Real Estate: Construction, land development and commercial [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	2	1
Recorded investment	$ 390		202
Commitments outstanding	$ 0		0
Summary of troubled debt restructuring loans were modified [Abstract]
Number of contracts | contract	1
Pre-modification recorded investment	$ 191
Post-modification recorded investment	$ 191
Real Estate: Mortgage, farmland [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	5	5
Recorded investment	$ 1,169		1,409
Commitments outstanding	$ 0		0
Summary of troubled debt restructuring loans were modified [Abstract]
Number of contracts | contract	0
Pre-modification recorded investment	$ 0
Post-modification recorded investment	$ 0
Real Estate: Mortgage, 1 to 4 family first liens [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	11	14
Recorded investment	$ 1,329		1,441
Commitments outstanding	$ 0		0
Summary of troubled debt restructuring loans were modified [Abstract]
Number of contracts | contract	0
Pre-modification recorded investment	$ 0
Post-modification recorded investment	$ 0
Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	1	1
Recorded investment	$ 19		20
Commitments outstanding	$ 0		0
Summary of troubled debt restructuring loans were modified [Abstract]
Number of contracts | contract	0
Pre-modification recorded investment	$ 0
Post-modification recorded investment	$ 0
Real Estate: Mortgage, multi-family [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	2	2
Recorded investment	$ 1,451		1,460
Commitments outstanding	$ 0		0
Summary of troubled debt restructuring loans were modified [Abstract]
Number of contracts | contract	0
Pre-modification recorded investment	$ 0
Post-modification recorded investment	$ 0
Real Estate: Mortgage, commercial [Member]
Summary of information for TDR loans [Abstract]
Number of contracts | contract	11	11
Recorded investment	$ 3,725		3,963
Commitments outstanding	$ 0		0
Summary of troubled debt restructuring loans were modified [Abstract]
Number of contracts | contract	1
Pre-modification recorded investment	$ 274
Post-modification recorded investment	$ 274
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

Loans, Collateral Dependent Loa

Loans, Collateral Dependent Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021	Jan. 01, 2021	Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	$ 2,687,792	$ 2,660,532
ACL Allocation	35,850	35,470	$ 36,620	$ 37,070	$ 37,070
Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	15,634,000	16,468,000
Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Equipment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	139,000	165,000
Other Collateral [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Total [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	15,773,000	16,633,000
ACL Allocation	605,000	384,000
Agricultural [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	104,900	106,933
ACL Allocation	2,414	2,261	2,147		2,508
Agricultural [Member] | Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	545,000	734,000
Agricultural [Member] | Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Agricultural [Member] | Equipment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	36,000	54,000
Agricultural [Member] | Other Collateral [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Agricultural [Member] | Total [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	581,000	788,000
ACL Allocation	1,000	1,000
Commercial and Financial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	223,702	222,002
ACL Allocation	4,895	4,269	5,114		4,885
Commercial and Financial [Member] | Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	1,878,000	1,951,000
Commercial and Financial [Member] | Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Commercial and Financial [Member] | Equipment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	103,000	111,000
Commercial and Financial [Member] | Other Collateral [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Commercial and Financial [Member] | Total [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	1,981,000	2,062,000
ACL Allocation	191,000	189,000
Real Estate Construction One to Four Family Residential [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	87,390	80,486
Real Estate Construction One to Four Family Residential [Member] | Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	488,000	111,000
Real Estate Construction One to Four Family Residential [Member] | Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Real Estate Construction One to Four Family Residential [Member] | Equipment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Real Estate Construction One to Four Family Residential [Member] | Other Collateral [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Real Estate Construction One to Four Family Residential [Member] | Total [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	488,000	111,000
ACL Allocation	58,000	111,000
Real Estate: Construction, land development and commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	135,353	127,021
Real Estate: Construction, land development and commercial [Member] | Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	552,000	492,000
Real Estate: Construction, land development and commercial [Member] | Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Real Estate: Construction, land development and commercial [Member] | Equipment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Real Estate: Construction, land development and commercial [Member] | Other Collateral [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Real Estate: Construction, land development and commercial [Member] | Total [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	552,000	492,000
ACL Allocation	1,000	13,000
Real Estate: Mortgage, farmland [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	236,573	232,744
ACL Allocation	3,310	3,433	$ 4,668		$ 4,173
Real Estate: Mortgage, farmland [Member] | Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	1,276,000	1,277,000
Real Estate: Mortgage, farmland [Member] | Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Real Estate: Mortgage, farmland [Member] | Equipment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Real Estate: Mortgage, farmland [Member] | Other Collateral [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Real Estate: Mortgage, farmland [Member] | Total [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	1,276,000	1,277,000
ACL Allocation	1,000	0
Real Estate: Mortgage, 1 to 4 family first liens [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	111,278	909,564
Real Estate: Mortgage, 1 to 4 family first liens [Member] | Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	5,441,000	5,967,000
Real Estate: Mortgage, 1 to 4 family first liens [Member] | Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Real Estate: Mortgage, 1 to 4 family first liens [Member] | Equipment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Real Estate: Mortgage, 1 to 4 family first liens [Member] | Other Collateral [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Real Estate: Mortgage, 1 to 4 family first liens [Member] | Total [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	5,441,000	5,967,000
ACL Allocation	33,000	31,000
Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	919,734	114,342
Real Estate: Mortgage, 1 to 4 family junior liens [Member] | Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	141,000	220,000
Real Estate: Mortgage, 1 to 4 family junior liens [Member] | Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Real Estate: Mortgage, 1 to 4 family junior liens [Member] | Equipment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Real Estate: Mortgage, 1 to 4 family junior liens [Member] | Other Collateral [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Real Estate: Mortgage, 1 to 4 family junior liens [Member] | Total [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	141,000	220,000
ACL Allocation	7,000	18,000
Real Estate: Mortgage, multi-family [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	381,942	382,792
Real Estate: Mortgage, multi-family [Member] | Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	1,451,000	1,460,000
Real Estate: Mortgage, multi-family [Member] | Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Real Estate: Mortgage, multi-family [Member] | Equipment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Real Estate: Mortgage, multi-family [Member] | Other Collateral [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Real Estate: Mortgage, multi-family [Member] | Total [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	1,451,000	1,460,000
ACL Allocation	0	0
Real Estate: Mortgage, commercial [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	404,769	401,377
Real Estate: Mortgage, commercial [Member] | Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	3,703,000	4,236,000
Real Estate: Mortgage, commercial [Member] | Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Real Estate: Mortgage, commercial [Member] | Equipment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Real Estate: Mortgage, commercial [Member] | Other Collateral [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Real Estate: Mortgage, commercial [Member] | Total [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	3,703,000	4,236,000
ACL Allocation	312,000	1,000
Loans to individuals [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	31,568	32,687
Loans to individuals [Member] | Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	20,000
Loans to individuals [Member] | Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Loans to individuals [Member] | Equipment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Loans to individuals [Member] | Other Collateral [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Loans to individuals [Member] | Total [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	20,000
ACL Allocation	0	20,000
Obligations of state and political subdivisions [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	50,397	50,285
Obligations of state and political subdivisions [Member] | Real Estate [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	159,000	0
Obligations of state and political subdivisions [Member] | Accounts Receivable [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Obligations of state and political subdivisions [Member] | Equipment [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Obligations of state and political subdivisions [Member] | Other Collateral [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	0	0
Obligations of state and political subdivisions [Member] | Total [Member]
Accounts, Notes, Loans and Financing Receivable [Line Items]
Financing Receivable, before Allowance for Credit Loss	159,000	0
ACL Allocation	$ 1,000	$ 0

Loans, Impaired Financing Rec_2

Loans, Impaired Financing Receivables Activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Summary of Information regarding impaired loans [Abstract]
Decrease in impaired loans	$ 860
Percentages of impaired loans to loans held for investment (in hundredths)	0.59%	0.63%
Decrease in TDR loans	$ 1,170
Decrease in nonaccrual loans	350
Increase (Decrease) accruing loans past days or more financing receivable unpaid principal balance	$ 680
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, change due to historical loss rates	$ 180
Financing Receivable, Allowance for Credit Losses, change due to individually analyzed loans reserve	230
Financing Receivable, Allowance for Credit Losses, change due to qualitative factors	$ 330

Leases (Details)

Leases (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Lessee, Lease, Description [Line Items]
Operating lease, renewal term	10 years
Operating lease, option to termination term	1 year
Operating lease expense	$ 140	$ 140
Operating lease cost	120	120
Short-term lease cost	10	10
Variable lease cost	10	10
Operating lease payments	120	$ 120
Operating lease, right-of-use asset	2,420		$ 2,470
Total operating lease liabilities	$ 2,486		$ 2,530
Weighted average remaining lease term	9 years 9 months 18 days		9 years 11 months 8 days
Weighted average discount rate	3.49%		3.49%
Minimum [Member]
Lessee, Lease, Description [Line Items]
Operating lease, term	1 year
Maximum [Member]
Lessee, Lease, Description [Line Items]
Operating lease, term	15 years

Leases - Minimum Future Rental

Leases - Minimum Future Rental Commitments, Topic 842 (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Leases [Abstract]
2022 (excluding the three months ended March 31, 2022)	$ 355
2023	327
2024	260
2025	263
2026	266
Thereafter	1,503
Total lease payments	2,974
Less imputed interest	(488)
Total operating lease liabilities	$ 2,486	$ 2,530

Fair Value Measurements (Detail

Fair Value Measurements (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Deposits
Other borrowings	$ 0	$ 249
Readily Available Market Prices [Member]
Financial instrument assets:
Cash and cash equivalents	718,938	781,918
Investment securities	360,449	243,925
Loans held for sale	0	0
Loans
Agricultural	0	0
Commercial and financial	0	0
Real estate:
Construction, 1 to 4 family residential	0	0
Construction, land development and commercial	0	0
Mortgage, farmland	0	0
Mortgage, 1 to 4 family first liens	0	0
Mortgage, 1 to 4 family junior liens	0	0
Mortgage, multi-family	0	0
Mortgage, commercial	0	0
Loans to individuals	0	0
Obligations of state and political subdivisions	0	0
Accrued interest receivable	0	0
Total financial instrument assets	1,079,387	1,025,843
Deposits
Noninterest-bearing deposits	0	0
Interest-bearing deposits	0	0
Other borrowings		0
Federal Home Loan Bank borrowings		0
Accrued interest payable	0	0
Total financial instrument liabilities	0	0
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
Observable Market Prices [Member]
Financial instrument assets:
Cash and cash equivalents	0	0
Investment securities	332,182	311,975
Loans held for sale	4,704	5,716
Loans
Agricultural	0	0
Commercial and financial	0	0
Real estate:
Construction, 1 to 4 family residential	0	0
Construction, land development and commercial	0	0
Mortgage, farmland	0	0
Mortgage, 1 to 4 family first liens	0	0
Mortgage, 1 to 4 family junior liens	0	0
Mortgage, multi-family	0	0
Mortgage, commercial	0	0
Loans to individuals	0	0
Obligations of state and political subdivisions	0	0
Accrued interest receivable	12,946	11,437
Total financial instrument assets	349,832	329,128
Deposits
Noninterest-bearing deposits	625,522	633,101
Interest-bearing deposits	3,042,148	2,909,243
Other borrowings		249
Federal Home Loan Bank borrowings		0
Accrued interest payable	1,084	1,165
Total financial instrument liabilities	3,668,754	3,543,758
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
Company Determined Market Prices [Member]
Financial instrument assets:
Cash and cash equivalents	0	0
Investment securities	0	0
Loans held for sale	0	0
Loans
Agricultural	101,970	103,745
Commercial and financial	217,496	216,466
Real estate:
Construction, 1 to 4 family residential	86,131	79,311
Construction, land development and commercial	132,401	124,466
Mortgage, farmland	231,220	228,365
Mortgage, 1 to 4 family first liens	909,423	897,255
Mortgage, 1 to 4 family junior liens	107,745	110,903
Mortgage, multi-family	377,536	378,193
Mortgage, commercial	394,636	391,950
Loans to individuals	31,017	31,871
Obligations of state and political subdivisions	50,220	50,155
Accrued interest receivable	0	0
Total financial instrument assets	2,639,795	2,612,680
Deposits
Noninterest-bearing deposits	0	0
Interest-bearing deposits	0	0
Other borrowings		0
Federal Home Loan Bank borrowings		0
Accrued interest payable	0	0
Total financial instrument liabilities	0	0
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
Carrying Amount [Member]
Financial instrument assets:
Cash and cash equivalents	718,938	781,918
Investment securities	692,631	555,900
Loans held for sale	4,704	5,716
Loans
Agricultural	102,486	104,672
Commercial and financial	218,807	217,733
Real estate:
Construction, 1 to 4 family residential	86,578	79,668
Construction, land development and commercial	133,818	125,539
Mortgage, farmland	233,263	229,311
Mortgage, 1 to 4 family first liens	911,479	901,523
Mortgage, 1 to 4 family junior liens	108,281	111,184
Mortgage, multi-family	378,797	379,077
Mortgage, commercial	397,680	394,594
Loans to individuals	30,799	31,916
Obligations of state and political subdivisions	49,954	49,845
Accrued interest receivable	12,946	11,437
Total financial instrument assets	4,081,161	3,980,033
Deposits
Noninterest-bearing deposits	625,522	633,101
Interest-bearing deposits	3,036,062	2,900,893
Other borrowings		249
Federal Home Loan Bank borrowings		0
Accrued interest payable	1,084	1,165
Total financial instrument liabilities	3,662,668	3,535,408
Financial instrument with off-balance sheet risk:
Loan commitments	733,631	614,324
Letters of credit	6,899	7,179
Total financial instrument liabilities with off-balance-sheet risk	740,530	621,503
Estimated Fair Value [Member]
Financial instrument assets:
Cash and cash equivalents	718,938	781,918
Investment securities	692,631	555,900
Loans held for sale	4,704	5,716
Loans
Agricultural	101,970	103,745
Commercial and financial	217,496	216,466
Real estate:
Construction, 1 to 4 family residential	86,131	79,311
Construction, land development and commercial	132,401	124,466
Mortgage, farmland	231,220	228,365
Mortgage, 1 to 4 family first liens	909,423	897,255
Mortgage, 1 to 4 family junior liens	107,745	110,903
Mortgage, multi-family	377,536	378,193
Mortgage, commercial	394,636	391,950
Loans to individuals	31,017	31,871
Obligations of state and political subdivisions	50,220	50,155
Accrued interest receivable	12,946	11,437
Total financial instrument assets	4,069,014	3,967,651
Deposits
Noninterest-bearing deposits	625,522	633,101
Interest-bearing deposits	3,042,148	2,909,243
Other borrowings		249
Federal Home Loan Bank borrowings		0
Accrued interest payable	1,084	1,165
Total financial instrument liabilities	3,668,754	3,543,758
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

Fair Value Measurements, Assets

Fair Value Measurements, Assets and Liabilities Recurring Basis (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale	$ 687,769	$ 551,354
U.S. Treasury [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale	360,449	243,925
State and political subdivisions [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale	245,172	263,516
Mortgage Backed Securities, Other
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale	49,283	9,446
Readily Available Market Prices [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Total	1,079,387	1,025,843
Observable Market Prices [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Total	349,832	329,128
Company Determined Market Prices [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Total	2,639,795	2,612,680
Recurring Basis [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Total	687,769	551,354
Recurring Basis [Member] | U.S. Treasury [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale	360,449	243,925
Recurring Basis [Member] | State and political subdivisions [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale	245,172	263,516
Recurring Basis [Member] | Mortgage Backed Securities, Other
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale	49,283	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]
Securities available for sale	32,865	34,467
Recurring Basis [Member] | Readily Available Market Prices [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Total	360,449	243,925
Recurring Basis [Member] | Readily Available Market Prices [Member] | U.S. Treasury [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale	360,449	243,925
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]
Securities available for sale	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]
Securities available for sale	0	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]
Securities available for sale	0	0
Recurring Basis [Member] | Observable Market Prices [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Total	327,320	307,429
Recurring Basis [Member] | Observable Market Prices [Member] | U.S. Treasury [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale	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]
Securities available for sale	245,172	263,516
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]
Securities available for sale	49,283	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]
Securities available for sale	32,865	34,467
Recurring Basis [Member] | Company Determined Market Prices [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Total	0	0
Recurring Basis [Member] | Company Determined Market Prices [Member] | U.S. Treasury [Member]
Summary of assets and liabilities measured at fair value on a recurring basis [Abstract]
Securities available for sale	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]
Securities available for sale	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]
Securities available for sale	0	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]
Securities available for sale	$ 0	$ 0

Fair Value Measurements, Asse_2

Fair Value Measurements, Assets and Liabilities on a Nonrecurring Basis (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
	Mar. 31, 2022	Dec. 31, 2021
Readily Available Market Prices [Member]
Loans
Agricultural	$ 0	$ 0
Commercial and financial	0	0
Real Estate [Abstract]
Construction, land development and commercial	0	0
Mortgage, farmland	0	0
Mortgage, 1 to 4 family first liens	0	0
Mortgage, 1 to 4 family junior liens	0	0
Mortgage, multi-family	0	0
Mortgage, commercial	0	0
Loans to individuals	0	0
Total financial instrument assets	1,079,387	1,025,843
Observable Market Prices [Member]
Loans
Agricultural	0	0
Commercial and financial	0	0
Real Estate [Abstract]
Construction, land development and commercial	0	0
Mortgage, farmland	0	0
Mortgage, 1 to 4 family first liens	0	0
Mortgage, 1 to 4 family junior liens	0	0
Mortgage, multi-family	0	0
Mortgage, commercial	0	0
Loans to individuals	0	0
Total financial instrument assets	349,832	329,128
Company Determined Market Prices [Member]
Loans
Agricultural	101,970	103,745
Commercial and financial	217,496	216,466
Real Estate [Abstract]
Construction, land development and commercial	132,401	124,466
Mortgage, farmland	231,220	228,365
Mortgage, 1 to 4 family first liens	909,423	897,255
Mortgage, 1 to 4 family junior liens	107,745	110,903
Mortgage, multi-family	377,536	378,193
Mortgage, commercial	394,636	391,950
Loans to individuals	31,017	31,871
Total financial instrument assets	2,639,795	2,612,680
Nonrecurring Basis [Member]
Loans
Agricultural	221	399
Commercial and financial	1,416	1,527
Real Estate [Abstract]
Construction, 1 to 4 family residential	440	383
Construction, land development and commercial	96	96
Mortgage, farmland	874	1,114
Mortgage, 1 to 4 family first liens	5,406	5,902
Mortgage, 1 to 4 family junior liens	206	202
Mortgage, multi-family	1,451	1,460
Mortgage, commercial	3,793	4,176
Loans to individuals	0	0
Foreclosed assets	0	0
Total financial instrument assets	13,903	15,259
Total Losses	70	476
Nonrecurring Basis [Member] | Agricultural [Member]
Real Estate [Abstract]
Total Losses	0	0
Nonrecurring Basis [Member] | Commercial and Financial [Member]
Real Estate [Abstract]
Total Losses	0	0
Nonrecurring Basis [Member] | Real Estate Construction One to Four Family Residential [Member]
Real Estate [Abstract]
Total Losses	0	0
Nonrecurring Basis [Member] | Real Estate: Construction, land development and commercial [Member]
Real Estate [Abstract]
Total Losses	0	0
Nonrecurring Basis [Member] | Real Estate: Mortgage, farmland [Member]
Real Estate [Abstract]
Total Losses	0	0
Nonrecurring Basis [Member] | Real Estate: Mortgage, 1 to 4 family first liens [Member]
Real Estate [Abstract]
Total Losses	65	212
Nonrecurring Basis [Member] | Real Estate: Mortgage, 1 to 4 family junior liens [Member]
Real Estate [Abstract]
Total Losses	5	9
Nonrecurring Basis [Member] | Real Estate: Mortgage, multi-family [Member]
Real Estate [Abstract]
Total Losses	0	0
Nonrecurring Basis [Member] | Real Estate: Mortgage, commercial [Member]
Real Estate [Abstract]
Total Losses	0	255
Nonrecurring Basis [Member] | Loans to individuals [Member]
Real Estate [Abstract]
Total Losses	0	0
Nonrecurring Basis [Member] | Foreclosed assets [Member]
Real Estate [Abstract]
Total Losses	0	0
Nonrecurring Basis [Member] | Readily Available Market Prices [Member]
Loans
Agricultural	0	0
Commercial and financial	0	0
Real Estate [Abstract]
Construction, 1 to 4 family residential	0	0
Construction, land development and commercial	0	0
Mortgage, farmland	0	0
Mortgage, 1 to 4 family first liens	0	0
Mortgage, 1 to 4 family junior liens	0	0
Mortgage, multi-family	0	0
Mortgage, commercial	0	0
Loans to individuals	0	0
Foreclosed assets	0	0
Total financial instrument assets	0	0
Nonrecurring Basis [Member] | Observable Market Prices [Member]
Loans
Agricultural	0	0
Commercial and financial	0	0
Real Estate [Abstract]
Construction, 1 to 4 family residential	0	0
Construction, land development and commercial	0	0
Mortgage, farmland	0	0
Mortgage, 1 to 4 family first liens	0	0
Mortgage, 1 to 4 family junior liens	0	0
Mortgage, multi-family	0	0
Mortgage, commercial	0	0
Loans to individuals	0	0
Foreclosed assets	0	0
Total financial instrument assets	0	0
Nonrecurring Basis [Member] | Company Determined Market Prices [Member]
Loans
Agricultural	221	399
Commercial and financial	1,416	1,527
Real Estate [Abstract]
Construction, 1 to 4 family residential	440	383
Construction, land development and commercial	96	96
Mortgage, farmland	874	1,114
Mortgage, 1 to 4 family first liens	5,406	5,902
Mortgage, 1 to 4 family junior liens	206	202
Mortgage, multi-family	1,451	1,460
Mortgage, commercial	3,793	4,176
Loans to individuals	0	0
Foreclosed assets	0	0
Total financial instrument assets	$ 13,903	$ 15,259

Stock Repurchase Program (Detai

Stock Repurchase Program (Details) - $ / shares	3 Months Ended		200 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Mar. 31, 2022	Jul. 26, 2005
Equity [Abstract]
Maximum number of share authorized to repurchase under the program (in shares)				1,500,000
Common stock purchased during the period (in shares)	26,412	20,852	1,431,156
Average price per share (in dollars per share)	$ 68.73

Commitments and Contingencies_2

Commitments and Contingencies (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
State and political subdivisions [Member]
Concentration Risk [Line Items]
Investment in securities issued by state and political subdivisions within the state of Iowa	$ 93,800
Home equity loans [Member]
Firm loan commitments and unused portion of lines of credit [Abstract]
Total financial instrument liabilities with off-balance-sheet risk	81,337	$ 78,961
Credit cards [Member]
Firm loan commitments and unused portion of lines of credit [Abstract]
Total financial instrument liabilities with off-balance-sheet risk	67,652	65,913
Commercial, real estate and home construction [Member]
Firm loan commitments and unused portion of lines of credit [Abstract]
Total financial instrument liabilities with off-balance-sheet risk	209,594	170,539
Commercial lines and real estate purchase loans [Member]
Firm loan commitments and unused portion of lines of credit [Abstract]
Total financial instrument liabilities with off-balance-sheet risk	375,048	298,911
Outstanding letters of credit [Member]
Firm loan commitments and unused portion of lines of credit [Abstract]
Total financial instrument liabilities with off-balance-sheet risk	$ 6,899	$ 7,179

Income Taxes (Details)

Income Taxes (Details) - USD ($)	3 Months Ended		12 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021
Income Tax Examination [Line Items]
Effective tax rate	20.97%	22.29%
Unrecognized tax benefits	$ 0		$ 0
Interest or penalties on unrecognized tax benefits	0		$ 0
Increase in unrecognized tax benefits is reasonably possible	$ 0
Internal Revenue Service (IRS) [Member]
Income Tax Examination [Line Items]
Income tax examination, years under examination	December 31, 2021, 2020, and 2019
State and Local Jurisdiction [Member]
Income Tax Examination [Line Items]
Income tax examination, years under examination	December 31, 2021, 2020, and 2019