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Note 4 - Loans and the Allowance for Credit Losses - Reversal of Accrued Interest (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Interest income reversed	$ 71	$ 73	$ 450	$ 119
Commercial Portfolio Segment [Member] | Commercial Loans [Member]
Interest income reversed	17	6	28	10
Commercial Portfolio Segment [Member] | Agricultural Loans [Member]
Interest income reversed	41	29	381	29
Commercial Portfolio Segment [Member] | Real Estate Loan [Member]
Interest income reversed	2	26	7	40
Residential Portfolio Segment [Member] | Real Estate Loan [Member]
Interest income reversed	1	0	1	9
Residential Portfolio Segment [Member] | Equity Lines of Credit [Member]
Interest income reversed	3	0	18	10
Consumer Portfolio Segment [Member] | Automobile Loan [Member]
Interest income reversed	7	12	14	21
Consumer Portfolio Segment [Member] | Other Loans [Member]
Interest income reversed	$ 0	$ 0	$ 1	$ 0

X

- Definition

Amount of writeoff of accrued interest on financing receivable recognized by reversing interest income.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 326
-SubTopic 20
-Name Accounting Standards Codification
-Section 50
-Paragraph 3D
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479319/326-20-50-3D

+ Details

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