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Note 16 - Accumulated Other Comprehensive Income (Loss) - Accumulated Other Comprehensive Income (Loss) by Component (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2023 | Sep. 30, 2022 | Sep. 30, 2023 | Sep. 30, 2022
Balance, beginning of period |  |  | $ 760,432 |
Balance, end of period | $ 806,918 |  | 806,918 |
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] |  |  |  |
Balance, beginning of period | (109,741) | $ (87,054) | (115,648) | $ (7,657)
Net current period other comprehensive income (loss) | (22,586) | (40,580) | (16,679) | (119,977)
Balance, end of period | (132,327) | (127,634) | (132,327) | (127,634)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] |  |  |  |
Balance, beginning of period | 2,213 | 0 | 0 | 0
Net current period other comprehensive income (loss) | 2,097 | 0 | 4,310 | 0
Balance, end of period | 4,310 | 0 | 4,310 | 0
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] |  |  |  |
Balance, beginning of period | 112 | (283) | 112 | (283)
Net current period other comprehensive income (loss) | 0 | 0 | 0 | 0
Balance, end of period | 112 | (283) | 112 | (283)
AOCI Attributable to Parent [Member] |  |  |  |
Balance, beginning of period | (107,416) | (87,337) | (115,536) | (7,940)
Net current period other comprehensive income (loss) | (20,489) | (40,580) | (12,369) | (119,977)
Balance, end of period | $ (127,905) | $ (127,917) | $ (127,905) | $ (127,917)

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