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Accumulated Other Comprehensive Loss (Components of Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2023 | Jun. 30, 2022 | Jun. 30, 2023 | Jun. 30, 2022 | Dec. 31, 2022 | Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |  |  |
Balance, beginning of period |  |  | $ 1,172,466 |  |  |
Other comprehensive income (loss) before reclassifications |  |  | 14,046 | $ (45,348) |  |
Amounts reclassified from accumulated other comprehensive loss |  |  | 187 | 158 |  |
Other comprehensive income (loss) | $ 4,483 | $ (33,519) | 14,233 | (45,190) |  |
Balance, end of period | 1,205,617 | 1,106,571 | 1,205,617 | 1,106,571 |  |
AOCI, Pension and other postretirement benefit plans, tax | 1,873 | 2,081 | 1,873 | 2,081 | $ 1,926 | $ 2,125
Accumulated Other Comprehensive Loss |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |  |  |
Balance, beginning of period | (75,514) | (56,914) | (85,264) | (45,243) |  |
Other comprehensive income (loss) | 4,483 | (33,519) | 14,233 | (45,190) |  |
Balance, end of period | (71,031) | (90,433) | (71,031) | (90,433) |  |
Foreign Currency Translation Adjustments |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |  |  |
Balance, beginning of period |  |  | (75,575) | (35,641) |  |
Other comprehensive income (loss) before reclassifications |  |  | 14,046 | (45,348) |  |
Amounts reclassified from accumulated other comprehensive loss |  |  | 0 | 0 |  |
Other comprehensive income (loss) |  |  | 14,046 | (45,348) |  |
Balance, end of period | (61,529) | (80,989) | (61,529) | (80,989) |  |
Pension and Other Postretirement Benefits |  |  |  |  |  |
Accumulated Other Comprehensive Income (Loss) [Roll Forward] |  |  |  |  |  |
Balance, beginning of period |  |  | (9,689) | (9,602) |  |
Other comprehensive income (loss) before reclassifications |  |  | 0 | 0 |  |
Amounts reclassified from accumulated other comprehensive loss |  |  | 187 | 158 |  |
Other comprehensive income (loss) |  |  | 187 | 158 |  |
Balance, end of period | $ (9,502) | $ (9,444) | $ (9,502) | $ (9,444) |  |

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