Note 5 - Loans and the Allowance for Credit Losses - Financial Effect of Loan Modifications (Details) |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
Dec. 31, 2023 |
|
| Weighted average term extension (Month) | 5 months 15 days | 10 months 21 days | 8 months 12 days |
| Commercial Portfolio Segment [Member] | Commercial Loans [Member] | |||
| Weighted average term extension (Month) | 4 months 24 days | 58 months 9 days | 6 months |
| Commercial Portfolio Segment [Member] | Agricultural Loans [Member] | |||
| Weighted average term extension (Month) | 5 months 18 days | 6 months 3 days | 9 months |