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Accumulated Other Comprehensive Loss (Tables) | 9 Months Ended
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Sep. 30, 2023
Equity [Abstract] |
Amounts Included in Accumulated Other Comprehensive Loss, Net of Tax | Amounts included in accumulated other comprehensive loss, net of tax, were as follows:
| Unrecognized Net Defined Benefit Plan Costs |  | Change in Fair Value of Derivatives |  | Foreign Currency Translation |  | Total
| (Dollars in thousands)
Balance at December 31, 2022 | $ | (156,733) |  |  | $ | (772) |  |  | $ | (187,805) |  |  | $ | (345,310) |
Other comprehensive income before reclassifications | — |  |  | 4,938 |  |  | 1,387 |  |  | 6,325 |
Amounts reclassified from accumulated other comprehensive loss | 5,518 |  |  | 292 |  |  | 23,589 |  |  | 29,399 |
Other comprehensive income | 5,518 |  |  | 5,230 |  |  | 24,976 |  |  | 35,724 |
Balance at September 30, 2023 | $ | (151,215) |  |  | $ | 4,458 |  |  | $ | (162,829) |  |  | $ | (309,586) |

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