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Note 9 - Accumulated Other Comprehensive Loss - Schedule of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2026 | Mar. 31, 2026 | Jun. 30, 2025 | Mar. 31, 2025 | Jun. 30, 2026 | Jun. 30, 2025
Balance | $ 213,799 | $ 212,018 | $ 187,805 | $ 176,332 | $ 212,018 | $ 176,332
Current period other comprehensive loss | (1,285) | (3,078) | 2,324 | 8,886 |  |
Balance | 217,154 | 213,799 | 194,885 | 187,805 | 217,154 | 194,885
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] |  |  |  |  |  |
Balance | (18,847) | (15,769) | (25,271) | (34,157) | (15,769) | (34,157)
Current period other comprehensive loss | (1,285) |  | 2,324 |  | (4,363) | 11,210
Balance | (20,132) | (18,847) | (22,947) | (25,271) | (20,132) | (22,947)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] | Officer [Member] |  |  |  |  |  |
Balance | 221 | 221 | 207 | 207 | 221 | 207
Current period other comprehensive loss | 0 |  | 0 |  | 0 | 0
Balance | 221 | 221 | 207 | 207 | 221 | 207
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] | Director [Member] |  |  |  |  |  |
Balance | 70 | 70 | 99 | 99 | 70 | 99
Current period other comprehensive loss | 0 |  | 0 |  | 0 | 0
Balance | 70 | 70 | 99 | 99 | 70 | 99
AOCI Attributable to Parent [Member] |  |  |  |  |  |
Balance | (18,556) | (15,478) | (24,965) | (33,851) | (15,478) | (33,851)
Current period other comprehensive loss | (1,285) | (3,078) | 2,324 | 8,886 | (4,363) | 11,210
Balance | $ (19,841) | $ (18,556) | $ (22,641) | $ (24,965) | $ (19,841) | $ (22,641)

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