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Note 17 - Changes in Accumulated Other Comprehensive Income (Loss) by Component - Changes to Accumulated Other Comprehensive Income (Loss) by Component (Details) - USD ($) $ in Thousands | 9 Months Ended
--- | ---
Sep. 30, 2023 | Sep. 30, 2022
Balance | $ 9,128 | $ (1,053)
Other comprehensive gain before reclassifications | 2,238 | 8,138
Amounts reclassified from accumulated other comprehensive income (loss): (1) | (2,601) | 1,304
Balance | 8,765 | 8,389
Actuarial gains | (216) | (165)
Tax expense | 56 | 42
Reclassification net of tax | (160) | (123)
Realized gains on interest rate swaps reclassified to interest expense | (3,298) | 1,928
Tax expense | 857 | (501)
Reclassification net of tax | (2,441) | 1,427
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] |  |
Balance | 6,115 | (3,524)
Other comprehensive gain before reclassifications | 2,238 | 8,138
Amounts reclassified from accumulated other comprehensive income (loss): (1) | (2,441) | 1,427
Balance | 5,912 | 6,041
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] |  |
Balance | 3,013 | 2,471
Other comprehensive gain before reclassifications | 0 | 0
Amounts reclassified from accumulated other comprehensive income (loss): (1) | (160) | (123)
Balance | $ 2,853 | $ 2,348

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