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Note 17 - Changes in Accumulated Other Comprehensive Income (Loss) by Component (Tables) | 9 Months Ended
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Sep. 30, 2023
Notes Tables |
Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block] |
|  | Unrealized |  |  |  |  |  |  |  |  |
|  | Net Gain (Loss) |  |  | Retiree |  |  |  |  |
|  | on Interest |  |  | Health |  |  |  |  |
|  | Rate |  |  | Benefit |  |  |  |  |
|  | Swap |  |  | Obligation |  |  | Total |
Balance at December 31, 2022 |  | $ | 6,115 |  |  | $ | 3,013 |  |  | $ | 9,128 |
Other comprehensive gain before reclassifications |  |  | 2,238 |  |  |  | — |  |  |  | 2,238 |
Amounts reclassified from accumulated other comprehensive income (loss): (1) |  |  | (2,441 | ) |  |  | (160 | ) |  |  | (2,601 | )
Balance at September 30, 2023 |  | $ | 5,912 |  |  | $ | 2,853 |  |  | $ | 8,765 |
(1) Amounts reclassified from accumulated other comprehensive income (loss): |  |  |  |  |  |  |  |  |  |  |  |
Amortization of Other Postretirement Benefit items: |  |  |  |  |  |  |  |  |  |  |  |
Actuarial gains |  | $ | (216 | ) |  |  |  |  |  |  |  |
Tax expense |  |  | 56 |  |  |  |  |  |  |  |  |
Reclassification net of tax |  | $ | (160 | ) |  |  |  |  |  |  |  |
Realized gains on interest rate swaps reclassified to interest expense |  | $ | (3,298 | ) |  |  |  |  |  |  |  |
Tax expense |  |  | 857 |  |  |  |  |  |  |  |  |
Reclassification net of tax |  | $ | (2,441 | ) |  |  |  |  |  |  |  |
|  | Unrealized |  |  |  |  |  |  |  |  |
|  | Net Gain (Loss) |  |  | Retiree |  |  |  |  |
|  | on Interest |  |  | Health |  |  |  |  |
|  | Rate |  |  | Benefit |  |  |  |  |
|  | Swap |  |  | Obligation |  |  | Total |
Balance at December 31, 2021 |  | $ | (3,524 | ) |  | $ | 2,471 |  |  | $ | (1,053 | )
Other comprehensive gain before reclassifications |  |  | 8,138 |  |  |  | — |  |  |  | 8,138 |
Amounts reclassified from accumulated other comprehensive income (loss): (1) |  |  | 1,427 |  |  |  | (123 | ) |  |  | 1,304 |
Balance at September 30, 2022 |  | $ | 6,041 |  |  | $ | 2,348 |  |  | $ | 8,389 |
(1) Amounts reclassified from accumulated other comprehensive income (loss): |  |  |  |  |  |  |  |  |  |  |  |
Amortization of Other Postretirement Benefit items: |  |  |  |  |  |  |  |  |  |  |  |
Actuarial gains |  | $ | (165 | ) |  |  |  |  |  |  |  |
Tax expense |  |  | 42 |  |  |  |  |  |  |  |  |
Reclassification net of tax |  | $ | (123 | ) |  |  |  |  |  |  |  |
Realized losses on interest rate swaps reclassified to interest expense |  | $ | 1,928 |  |  |  |  |  |  |  |  |
Tax benefit |  |  | (501 | ) |  |  |  |  |  |  |  |
Reclassification net of tax |  | $ | 1,427 |  |  |  |  |  |  |  |  |

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