Note 4 - Securities - Summary of Gains and Losses (Details) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Dec. 31, 2025 |
Dec. 31, 2024 |
|
| Net change in the unrealized gain (loss) recognized during the period on marketable equity securities | $ 151 | $ (55) |
| Add: Net realized gain (loss) recognized on marketable equity securities sold during the period | 0 | 0 |
| Net gain (loss) recognized in net income during the period on marketable equity securities still held at the reporting date | $ 151 | $ (55) |