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Note 4 - Loans Receivable and Credit Disclosures - Amortized Cost Basis of Collateral Dependent Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Allowance for credit loss	$ 17,058	$ 16,776	$ 15,697
Construction Real Estate [Member]
Allowance for credit loss	482	408	730
Family Residential Real Estate 1-4 [Member]
Allowance for credit loss	3,890	3,333	3,028
Multifamily [Member]
Allowance for credit loss	2,188	2,542	2,493
Commercial Real Estate Portfolio Segment [Member]
Allowance for credit loss	4,932	5,236	4,742
Agriculture Real Estate [Member]
Allowance for credit loss	1,584	1,238	1,625
Commercial Portfolio Segment [Member]
Allowance for credit loss	1,759	1,955	1,153
Agriculture [Member]
Allowance for credit loss	1,805	1,607	1,705
Consumer and Other [Member]
Allowance for credit loss	418	457	$ 221
Real Estate [Member]
Financing Receivable Individually Evaluated For Impairment	13,583	12,577
Real Estate [Member] | Construction Real Estate [Member]
Financing Receivable Individually Evaluated For Impairment	62	66
Real Estate [Member] | Family Residential Real Estate 1-4 [Member]
Financing Receivable Individually Evaluated For Impairment	696	678
Real Estate [Member] | Multifamily [Member]
Financing Receivable Individually Evaluated For Impairment	947	2,034
Real Estate [Member] | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable Individually Evaluated For Impairment	10,785	8,993
Real Estate [Member] | Agriculture Real Estate [Member]
Financing Receivable Individually Evaluated For Impairment	420	449
Real Estate [Member] | Commercial Portfolio Segment [Member]
Financing Receivable Individually Evaluated For Impairment	460	118
Real Estate [Member] | Agriculture [Member]
Financing Receivable Individually Evaluated For Impairment	213	239
Real Estate [Member] | Consumer and Other [Member]
Financing Receivable Individually Evaluated For Impairment
Equipment [Member]
Financing Receivable Individually Evaluated For Impairment	398	669
Equipment [Member] | Construction Real Estate [Member]
Financing Receivable Individually Evaluated For Impairment
Equipment [Member] | Family Residential Real Estate 1-4 [Member]
Financing Receivable Individually Evaluated For Impairment
Equipment [Member] | Multifamily [Member]
Financing Receivable Individually Evaluated For Impairment
Equipment [Member] | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable Individually Evaluated For Impairment
Equipment [Member] | Agriculture Real Estate [Member]
Financing Receivable Individually Evaluated For Impairment
Equipment [Member] | Commercial Portfolio Segment [Member]
Financing Receivable Individually Evaluated For Impairment	398
Equipment [Member] | Agriculture [Member]
Financing Receivable Individually Evaluated For Impairment		669
Equipment [Member] | Consumer and Other [Member]
Financing Receivable Individually Evaluated For Impairment
Other [Member]
Financing Receivable Individually Evaluated For Impairment	765	503
Other [Member] | Construction Real Estate [Member]
Financing Receivable Individually Evaluated For Impairment
Other [Member] | Family Residential Real Estate 1-4 [Member]
Financing Receivable Individually Evaluated For Impairment
Other [Member] | Multifamily [Member]
Financing Receivable Individually Evaluated For Impairment
Other [Member] | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable Individually Evaluated For Impairment
Other [Member] | Agriculture Real Estate [Member]
Financing Receivable Individually Evaluated For Impairment
Other [Member] | Commercial Portfolio Segment [Member]
Financing Receivable Individually Evaluated For Impairment	405	101
Other [Member] | Agriculture [Member]
Financing Receivable Individually Evaluated For Impairment	357	402
Other [Member] | Consumer and Other [Member]
Financing Receivable Individually Evaluated For Impairment	3
Collateral Pledged [Member]
Financing Receivable Individually Evaluated For Impairment	14,746	13,749
Allowance for credit loss	90	106
Collateral Pledged [Member] | Construction Real Estate [Member]
Financing Receivable Individually Evaluated For Impairment	62	66
Allowance for credit loss
Collateral Pledged [Member] | Family Residential Real Estate 1-4 [Member]
Financing Receivable Individually Evaluated For Impairment	696	678
Allowance for credit loss	40	10
Collateral Pledged [Member] | Multifamily [Member]
Financing Receivable Individually Evaluated For Impairment	947	2,034
Allowance for credit loss
Collateral Pledged [Member] | Commercial Real Estate Portfolio Segment [Member]
Financing Receivable Individually Evaluated For Impairment	10,785	8,993
Allowance for credit loss
Collateral Pledged [Member] | Agriculture Real Estate [Member]
Financing Receivable Individually Evaluated For Impairment	420	449
Allowance for credit loss
Collateral Pledged [Member] | Commercial Portfolio Segment [Member]
Financing Receivable Individually Evaluated For Impairment	1,263	219
Allowance for credit loss	50	96
Collateral Pledged [Member] | Agriculture [Member]
Financing Receivable Individually Evaluated For Impairment	570	1,310
Allowance for credit loss
Collateral Pledged [Member] | Consumer and Other [Member]
Financing Receivable Individually Evaluated For Impairment	3
Allowance for credit loss

X

- Definition

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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