Reclassification, Comparability Adjustment [Policy Text Block]

Reclassifications: Certain reclassifications have been made to the prior period’s consolidated financial statements to present them on a basis comparable with the current period’s consolidated financial statements. The reclassifications had no effect on stockholders’ equity and net income of the prior periods.

Adoption of New Financial Accounting Standard [Policy Text Block]

Adoption of New Financial Accounting Standard Codification 326 (ASC 326 (CECL)):

On January 1, 2023, 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 measurement of expected credit losses under the CECL methodology is applicable to financial assets measured at amortized cost, including loan receivables and held-to-maturity debt securities. It also applies to off-balance sheet (OBS) credit exposures not accounted for as insurance (loan commitments, standby letters of credit, financial guarantees, and other similar instruments) and net investments in leases recognized by a lessor in accordance with Topic 842 on leases. In addition, ASC 326 made changes to the accounting for available-for-sale debt securities. One such change is to require credit losses to be presented as an allowance rather than as a write-down on available-for-sale debt securities management does not intend to sell or believes that it is more likely than not they will be required to sell.

The Company adopted ASC 326 using the modified retrospective method for all financial assets measured at amortized cost and OBS credit exposures. Results for reporting periods beginning January 1, 2023 are presented under ASC 326 while prior period amounts continue to be reported in accordance with previously applicable GAAP. The Company recorded a net decrease to retained earnings of $603 thousand as of January 1, 2023 for the cumulative effect of adopting ASC 326, which includes deferred taxes of $188 thousand. The transition adjustment includes a $518 thousand increase to the Allowance for Credit Losses on loans and a $273 thousand increase to the Allowance for Credit Losses on OBS Credit Exposures.

The following table illustrates the impact of ASC 326 (amounts in thousands).

	January 1, 2023
	As Reported Under ASC 326		Pre-ASC 326 Adoption		Impact of ASC 326 Adoption
Assets:
Loans receivable
Allowance for credit losses on loans	$	16,215	$	15,697	$	518

Liabilities:
Accrued expenses and other liabilities
Allowance for credit losses on off-balance sheet credit exposures	$	1,071	$	798	$	273

Financing Receivable, Held-for-Sale [Policy Text Block]

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 and Leases Receivable, Allowance for Loan Losses Policy [Policy Text Block]

Allowance for Credit Losses For Loans Held For Investment: Credit quality within the loans held for investment portfolio is continuously monitored by management and is reflected within the allowance for credit losses for loans. The allowance for credit losses is an estimate of expected losses inherent within the Company's existing loans held for investment portfolio. Expected credit loss inherent in non-cancelable off-balance-sheet credit exposures is accounted for as a separate liability on the balance sheet. 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 construction real estate, 1 to 4 family residential real estate, multi-family real estate, commercial real estate, agricultural real estate, commercial, agricultural and consumer and other lending. When computing allowance levels, credit loss assumptions are estimated using a model that categorizes loan pools based on loss history, delinquency status and other credit trends and risk characteristics, including current conditions and reasonable and supportable forecasts about the future. The key components in this estimation process include the following:

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An initial forecast period of one year for all portfolio segments and OBS credit exposures. This period reflects management's expectation of losses based on forward-looking economic scenarios over that time.

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A historical loss forecast period covering the remaining contractual life, adjusted for prepayments, by portfolio segment based on the change in key historical economic variables.

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A reversion period of 1 year connecting the initial loss forecast to the historical loss forecast based on economic conditions at the measurement date.

The Company primarily utilizes loss rate based undiscounted cash flow (UDCF) methods to estimate credit losses by portfolio segment. The UDCF methods obtain estimated life-time credit losses using the conceptual components described above.

Determining the appropriateness of the allowance is complex and requires judgment by management about the effect of matters that are inherently uncertain. In future periods evaluations of the overall loan portfolio, in light of the factors and forecasts then prevailing, may result in significant changes in the allowance and credit loss expense in those future periods.

Credit quality is assessed and monitored by evaluating various attributes and the results of those evaluations are utilized in underwriting new loans and in our process for estimation of expected credit losses. 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.

Construction Real Estate – Construction loans are underwritten utilizing independent appraisals, sensitivity analysis of absorption, vacancy and lease rates and financial analysis of the developers and property owners. Construction loans are generally based upon estimates of costs and value associated with the completed project. These estimates may prove to be inaccurate primarily due to unforeseen circumstances beyond the control of the borrower or lender. Construction loans often involve the disbursement of funds with repayment substantially dependent on the success of the ultimate project. These loans are closely monitored by on-site inspections and are considered to have higher risks than other real estate loans due to their ultimate repayment being sensitive to interest rate changes, general economic conditions and the availability of long-term financing. The Company may require guarantees on these loans. The Company’s construction loans are secured primarily by properties located in its primary market area. National unemployment rate is a key economic forecast used in estimating expected credit losses for this segment.

1-4 Family Residential Real Estate – The Company originates 1-4 family real estate loans utilizing credit reports to supplement the underwriting process. The Company’s underwriting standards for 1-4 family loans are generally in accordance with FHLMC and FNMA manual underwriting guidelines. Properties securing 1-4 family real estate loans are appraised by either staff appraisers or fee appraisers, both of which are independent of the loan origination function and have been approved by the Board of Directors. The loan-to-value ratios normally do not exceed 90% without credit enhancements such as mortgage insurance. The Company will lend up to 100% of the lesser of the appraised value or purchase price for conventional 1-4 family real estate loans, provided private mortgage insurance is obtained. The Company’s 1-4 family real estate loans are secured primarily by properties located in its primary market area. The national unemployment rate is a key economic forecast used in estimating expected credit losses for this segment.

Multi-family, Commercial and Agricultural Real Estate – Multi-family, commercial and agricultural real estate loans are subject to underwriting standards and processes similar to commercial and agricultural operating loans, in addition to those unique to real estate loans. These loans are viewed primarily as cash flow loans and, secondarily, as loans secured by real estate. Multi-family, commercial and agricultural real estate lending typically involves higher loan principal amounts and the repayment of these loans is generally dependent on the successful operation of the property securing the loan or the business conducted on the property securing the loan. Loan-to-value generally does not exceed 80% of the cost or value of the assets. Loans are typically subject to interest rate adjustments between five and seven years from origination. Fully amortized monthly repayment terms normally do not exceed twenty-five years. Projections and cash flows that show ability to service debt within the amortization period are required. Property and casualty insurance is required to protect the Banks’ collateral interests. Appraisals on properties securing these loans are generally performed by fee appraisers approved by the Board of Directors. Because payments on multi-family, commercial and agricultural real estate loans are often dependent on the successful operation or management of the properties, repayment of such loans may be subject to adverse conditions in the real estate market or the economy. Management monitors and evaluates commercial and agricultural real estate loans based on collateral and risk rating criteria. The Company may require guarantees on these loans. The Company’s multi-family, commercial and agricultural real estate loans are secured primarily by properties located in its primary market areas. The national unemployment rate and the national real gross domestic product (GDP) are key economic forecasts used in estimating expected credit losses for the multi-family and commercial real estate segments. The national real GDP is a key economic forecast used in estimating expected credit losses for the agricultural real estate segment.

Commercial and Agricultural – Commercial and agricultural operating loans are underwritten based on the Company’s examination of current and projected cash flows to determine the ability of the borrower to repay their obligations as agreed. This underwriting includes the evaluation of cash flows of the borrower, underlying collateral, if applicable, and the borrower’s ability to manage its business activities. The cash flows of borrowers and the collateral securing these loans may fluctuate in value after the initial evaluation. A first priority lien on the general assets of the business normally secures these types of loans. Loan-to-value limits vary and are dependent upon the nature and type of the underlying collateral and the financial strength of the borrower. Crop and hail insurance is required for most agricultural borrowers. Loans are generally guaranteed by the principal(s). The Company’s commercial and agricultural operating lending is primarily in its primary market area. The national unemployment rate and the national real GDP are key economic forecasts used in estimating expected credit losses for the commercial operating segment. The national real GDP is a key economic forecast used in estimating expected credit losses for the agricultural operating segment.

Consumer and Other – Consumer and other loans utilize credit reports to supplement the underwriting process. The underwriting standards include a determination of the applicant’s payment history on other debts and an assessment of their ability to meet existing obligations and payments on the proposed loan. To monitor and manage loan risk, policies and procedures are developed and modified, as needed by management. This activity, coupled with smaller loan amounts that are spread across many individual borrowers, minimizes risk. Additionally, market conditions are reviewed by management on a regular basis. The Iowa real GDP and Iowa retail trade earnings are key economic forecasts used in estimating expected credit losses for this segment.

Determining the Contractual Term: Expected credit losses are estimated over the contractual term of the loans, adjusted for expected prepayments when appropriate. The contractual term excludes expected extensions, renewals and modifications unless the extension or renewal options are included in the original or modified contract at the reporting date and are not unconditionally cancellable by the Company.

Credit Loss Measurement: 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, 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; and second, a pooled component for estimated expected credit losses for pools of loans that share similar risk characteristics.

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 fair value of collateral used by the Company is determined by obtaining an observable market price or by obtaining a fair 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. Each quarter management reviews all collateral-dependent loans on a loan-by-loan basis to determine whether updated appraisals or evaluations are necessary based on loan performance, collateral type and guarantor support. At times, the Company measures the fair value of collateral-dependent loans using appraisals or evaluations with dates prior to one year from the date of review. Third-party appraisals are obtained from a pre-approved list of independent, third-party, local appraisal firms maintained by the credit underwriting department or the Company’s appraiser. Approval and addition to the list is based on experience, reputation, character, consistency and knowledge of the respective real estate market. Generally, appraisals are internally reviewed to ensure the quality of the appraisal and the expertise and independence of the appraiser. Once the expected credit loss amount is determined an allowance is provided for equal to the calculated expected credit loss and included in the allowance for credit losses. If the calculated expected credit loss is determined to be permanent or not recoverable, the amount of expected credit loss will be charged off. Factors considered by management in determining if the expected credit loss is permanent or not recoverable include whether management judges the loan to be uncollectible, repayment is deemed to be protracted beyond reasonable time frames, or the loss becomes evident owing to the borrower's lack of assets unless both well-secured and in the process of collection.

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 historical loss rate of similar peers. The loss rate 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 loss 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, depth, and ability of the lending management and other relevant staff; (5) the volume and severity of past due loans and other similar conditions; (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 loss rates so that they reflect management expectation of future conditions based on a reasonable and supportable forecast. To the extent the lives of the loans in the portfolio extend beyond the period for which a reasonable and supportable forecast can be made, the Company reduces, on a straight-line basis over one year, the adjustments so that the model reverts back to the historical loss rates.

New Accounting Pronouncements, Policy [Policy Text Block]

New and Pending Accounting Pronouncements:

In March 2022, the FASB issued ASU 2022-01, Derivatives and Hedging (Topic 815): Fair Value Hedging – Portfolio Layer Method. ASU 2022-01 further clarifies certain targeted improvements to the optional hedge accounting model that were made under ASU 2017-12. ASU 2022-01 expands the last-of-layer method and renames this method to portfolio layer method to reflect this expansion, as well as expanding the scope of the portfolio layer method to include nonprepayable financial assets. It also specifies eligible hedging instruments and provides additional guidance on the accounting for and disclosure of hedge basis adjustments that are applicable to the portfolio layer method. ASU 2022-01 permits an entity to apply the same portfolio hedging method to both prepayable and nonprepayable financial assets, thereby allowing consistent accounting for similar hedges. ASU 2022-01 became effective for the Company on January 1, 2023. The adoption of ASU 2022-01 did not have a material impact on the Company’s consolidated financial statements.

In March 2023, the FASB issued ASU No. 2023-02, Investments - Equity Method and Joint Ventures (Topic 323): Accounting for Investments in Tax Credit Structures Using Proportional Amortization Method. The ASU is intended to improve the accounting and disclosures for investments in tax credit structures. It allows reporting entities to elect to adopt for qualifying tax equity investments using the proportional amortization method, regardless of the program giving rise to the related income tax credits. For public business entities, the amendments are effective for fiscal years beginning after December 15, 2023, including interim periods within those fiscal years. The Company is currently evaluating the impact of the ASU on the Company's consolidated financial statements.