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Note 4 - Loans and the Allowance for Credit Losses - Reversal of Accrued Interest (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2025 | Jun. 30, 2024 | Jun. 30, 2025 | Jun. 30, 2024
Interest income reversed | $ 364 | $ 7 | $ 378 | $ 46
Commercial Portfolio Segment [Member] | Commercial Loans [Member] |  |  |  |
Interest income reversed | 6 | 0 | 10 | 4
Commercial Portfolio Segment [Member] | Agricultural Loans [Member] |  |  |  |
Interest income reversed | 339 | 0 | 340 | 0
Commercial Portfolio Segment [Member] | Real Estate Loan [Member] |  |  |  |
Interest income reversed | 4 | 0 | 4 | 14
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 | 10 | 0 | 15 | 10
Consumer Portfolio Segment [Member] | Automobile Loan [Member] |  |  |  |
Interest income reversed | 4 | 7 | 7 | 9
Consumer Portfolio Segment [Member] | Other Loans [Member] |  |  |  |
Interest income reversed | $ 0 | $ 0 | $ 1 | $ 0

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- 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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