Note 4 - Allowance for Credit Losses - Nonaccrual Loans (Details) - USD ($) $ in Thousands |
Mar. 31, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Nonaccrual, No Allowance | $ 2,155 | $ 3,070 |
| Nonaccrual, With Allowance | 2,290 | 1,584 |
| Non-accrual loans | 4,445 | 4,654 |
| Real Estate 1 [Member] | Construction and Land Development [Member] | ||
| Nonaccrual, No Allowance | 44 | 45 |
| Nonaccrual, With Allowance | 0 | 0 |
| Non-accrual loans | 44 | 45 |
| Real Estate 1 [Member] | Secured by Multi-family Residential Properties [Member] | ||
| Nonaccrual, No Allowance | 2,111 | 1,994 |
| Nonaccrual, With Allowance | 0 | 0 |
| Non-accrual loans | 2,111 | 1,994 |
| Real Estate 1 [Member] | Other Real Estate Loans [Member] | ||
| Nonaccrual, No Allowance | 0 | 0 |
| Nonaccrual, With Allowance | 0 | 0 |
| Non-accrual loans | 0 | 0 |
| Commercial and Industrial Loans [Member] | ||
| Nonaccrual, No Allowance | 0 | 1,031 |
| Nonaccrual, With Allowance | 2,290 | 1,584 |
| Non-accrual loans | 2,290 | 2,615 |
| Consumer and Other Loans [Member] | ||
| Nonaccrual, No Allowance | 0 | 0 |
| Nonaccrual, With Allowance | 0 | 0 |
| Non-accrual loans | $ 0 | $ 0 |