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Note 17 - Accumulated Other Comprehensive Income (Loss) - Accumulated Other Comprehensive Income (Loss) by Component (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2023 | Mar. 31, 2022
Balance, beginning of period | $ 760,432 |
Balance, end of period | 794,368 |
AOCI, Accumulated Gain (Loss), Debt Securities, Available-for-Sale, Parent [Member] |  |
Balance, beginning of period | (115,648) | $ (7,657)
Net current period other comprehensive income | 14,217 | (49,659)
Balance, end of period | (101,431) | (57,316)
Accumulated Net Gain (Loss) from Cash Flow Hedges Attributable to Parent [Member] |  |
Balance, beginning of period | 0 | 0
Net current period other comprehensive income | 376 | 0
Balance, end of period | 376 | 0
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] |  |
Balance, beginning of period | 112 | (283)
Net current period other comprehensive income | 0 | 0
Balance, end of period | 112 | (283)
AOCI Attributable to Parent [Member] |  |
Balance, beginning of period | (115,536) | (7,940)
Net current period other comprehensive income | 14,593 | (49,659)
Balance, end of period | $ (100,943) | $ (57,599)

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