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Note 19 - Changes in Accumulated Other Comprehensive Income (Loss) by Component - Changes to Accumulated Other Comprehensive Income (Loss) by Component (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2024 | Mar. 31, 2023
Balance | $ 6,356 | [1] | $ 9,128 |
Other comprehensive gain before reclassifications | 1,335 |  | (871) |
Amounts reclassified from accumulated other comprehensive income (loss): (1) | (995) |  | (718) |
Balance | 6,696 |  | 7,539 |
Actuarial gains | (54) |  | (72) |
Tax expense | 14 |  | 19 |
Reclassification net of tax | (40) |  | (53) |
Realized gains on interest rate swaps reclassified to interest expense | (1,290) |  | (899) |
Tax expense | 335 |  | 234 |
Reclassification net of tax | (955) |  | (665) |
Accumulated Gain (Loss), Net, Cash Flow Hedge, Parent [Member] |  |  |  |
Balance | 3,331 | [1] | 6,115 |
Other comprehensive gain before reclassifications | 1,335 |  | (871) |
Amounts reclassified from accumulated other comprehensive income (loss): (1) | (955) |  | (665) | [1]
Balance | 3,711 |  | 4,579 |
Accumulated Defined Benefit Plans Adjustment Attributable to Parent [Member] |  |  |  |
Balance | 3,025 | [1] | 3,013 |
Other comprehensive gain before reclassifications | 0 |  | 0 |
Amounts reclassified from accumulated other comprehensive income (loss): (1) | (40) |  | (53) |
Balance | $ 2,985 |  | $ 2,960 |
[1] | These components are included in the computation of benefit plan costs in Note 12.

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