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Note 11 - Accumulated Other Comprehensive Income (Loss) - Components of Accumulated Other Comprehensive Income, Net of Tax (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Balance | $ 502,829 | $ 508,884 | $ 526,392 | [1] | $ 503,294
Other comprehensive gain, net of tax | 1,093 | 4,005 | 3,117 |  | 2,542
Other comprehensive loss, net | 1,093 | 4,005 | 3,117 |  | 2,542
Balance | 510,725 | 520,694 | 510,725 |  | 520,694
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] |  |  |  |  |
Balance | (9,699) | (12,589) | (11,723) |  | (11,126)
Other comprehensive income before reclassifications | 1,093 | 4,005 | 3,117 |  | 2,542
Reclassified from AOCI | 0 | 0 | 0 |  | 0
Other comprehensive gain, net of tax | 1,093 | 4,005 | 3,117 |  | 2,542
Other comprehensive loss, net | 1,093 | 4,005 | 3,117 |  | 2,542
Balance | (8,606) | (8,584) | (8,606) |  | (8,584)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] |  |  |  |  |
Balance | 552 | 175 | 552 |  | 175
Other comprehensive income before reclassifications | 4 | (7) | 13 |  | (22)
Reclassified from AOCI | (4) | 7 | (13) |  | 22
Other comprehensive gain, net of tax | 0 | 0 | 0 |  | 0
Other comprehensive loss, net | 0 | 0 | 0 |  | 0
Balance | 552 | 175 | 552 |  | 175
AOCI Attributable to Parent [Member] |  |  |  |  |
Balance | (9,147) | (12,414) | (11,171) |  | (10,951)
Other comprehensive income before reclassifications | 1,097 | 3,998 | 3,130 |  | 2,520
Reclassified from AOCI | (4) | 7 | (13) |  | 22
Other comprehensive gain, net of tax | 1,093 | 4,005 | 3,117 |  | 2,542
Other comprehensive loss, net | 1,093 | 4,005 | 3,117 |  | 2,542
Balance | $ (8,054) | $ (8,409) | $ (8,054) |  | $ (8,409)
[1] | Derived from audited financial statements

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