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Note 7 - Components of Accumulated Other Comprehensive Loss - Components of Accumulated Other Comprehensive Income (Loss) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2024 | Sep. 30, 2023 | Sep. 30, 2024 | Sep. 30, 2023
Balance | $ 148,963 | $ 128,444 | $ 140,522 | $ 122,687
Balance | 167,782 | 116,113 | 167,782 | 116,113
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] |  |  |  |
Balance | (66,044) | (71,898) | (62,556) | (81,421)
Unrealized holding gain (loss) on available for sale securities, net of tax | 16,115 | (15,421) | 12,627 | (8,530)
Reclassification adjustment, net of tax of $700 |  |  |  | 2,632
Balance | (49,929) | (87,319) | (49,929) | (87,319)
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] |  |  |  |
Balance | (2,310) | (2,345) | (2,310) | (2,345)
Unrealized holding gain (loss) on available for sale securities, net of tax | 0 | 0 | 0 | 0
Reclassification adjustment, net of tax of $700 |  |  |  | 0
Balance | (2,310) | (2,345) | (2,310) | (2,345)
AOCI Attributable to Parent [Member] |  |  |  |
Balance | (68,354) | (74,243) | (64,866) | (83,766)
Unrealized holding gain (loss) on available for sale securities, net of tax | 16,115 | (15,421) | 12,627 | (8,530)
Reclassification adjustment, net of tax of $700 |  |  |  | 2,632
Balance | $ (52,239) | $ (89,664) | $ (52,239) | $ (89,664)

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