Note 4 - Loans and the Allowance for Credit Losses - Loan Modifications (Details) - Extended Maturity [Member] - USD ($) $ in Thousands |
6 Months Ended | |
|---|---|---|
Jun. 30, 2025 |
Jun. 30, 2024 |
|
| Modified | $ 7,958 | |
| % of total segment financing receivables | 0.78% | |
| Commercial Portfolio Segment [Member] | Commercial Loans [Member] | ||
| Modified | $ 772 | $ 34 |
| % of total segment financing receivables | 0.11% | 0.04% |
| Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | ||
| Modified | $ 7,186 | |
| % of total segment financing receivables | 6.30% | |