Note 5 - Other Borrowings - Outstanding Advances (Details) - Federal Home Loan Bank of Chicago [Member] - USD ($) $ in Thousands |
3 Months Ended | 6 Months Ended | ||
|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
|
| Average balance outstanding | $ 0 | $ 4,396 | $ 0 | $ 4,696 |
| Average interest rate during the period | 4.80% | 4.80% | ||
| Maximum [Member] | ||||
| Average balance outstanding | $ 0 | $ 5,000 | $ 0 | $ 5,000 |