Note 7 - Fair Value of Financial Instruments - Carrying Amounts and Estimated Fair Value Hierarchy of Certain Financial Information (Details) - USD ($) $ in Thousands |
Jun. 30, 2026 |
Dec. 31, 2025 |
|---|---|---|
| Reported Value Measurement [Member] | ||
| Loans, net | $ 126,528 | $ 128,635 |
| Loans held for sale | 1,369 | 4,459 |
| Interest-bearing deposits | 169,610 | 168,166 |
| Estimate of Fair Value Measurement [Member] | ||
| Loans, net | 119,914 | 122,290 |
| Loans held for sale | 1,396 | 4,548 |
| Interest-bearing deposits | 169,617 | 168,431 |
| Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 1 [Member] | ||
| Loans, net | 0 | 0 |
| Loans held for sale | 0 | 0 |
| Interest-bearing deposits | 0 | 0 |
| Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 2 [Member] | ||
| Loans, net | 0 | 0 |
| Loans held for sale | 1,396 | 4,548 |
| Interest-bearing deposits | 169,617 | 168,431 |
| Estimate of Fair Value Measurement [Member] | Fair Value, Inputs, Level 3 [Member] | ||
| Loans, net | 119,914 | 122,290 |
| Loans held for sale | 0 | 0 |
| Interest-bearing deposits | $ 0 | $ 0 |