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Stockholders' Equity - Change by Component (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2021 | Dec. 31, 2020
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax |  |
Beginning balance | $ 1,277,126 |
Ending balance | 740,737 | $ 1,277,126
Discontinued Operations |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax |  |
Disposal of business | 9,846 | (14,575)
Total |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax |  |
Beginning balance | (15,265) | (15,348)
Other comprehensive loss before reclassifications | 18,814 | (14,621)
Amounts reclassified from accumulated other comprehensive income | 505 | 129
Total other comprehensive income (loss) | 9,473 | 83
Ending balance | (5,792) | (15,265)
Defined benefit and other postretirement plans |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax |  |
Beginning balance | 5,278 | 3,568
Other comprehensive loss before reclassifications | 5,623 | 1,850
Amounts reclassified from accumulated other comprehensive income | 171 | 88
Total other comprehensive income (loss) | 5,794 | 1,710
Ending balance | 11,072 | 5,278
Defined benefit and other postretirement plans, disposal of business | Discontinued Operations |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax |  |
Disposal of business | 0 | 228
Net gain (loss) from hedging activities |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax |  |
Beginning balance | (660) | (1,838)
Other comprehensive loss before reclassifications | 2,580 | 125
Amounts reclassified from accumulated other comprehensive income | 334 | 41
Total other comprehensive income (loss) | 2,914 | 1,178
Ending balance | 2,254 | (660)
Net gain (loss) from hedging activities, disposal of business | Discontinued Operations |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax |  |
Disposal of business | 0 | (1,012)
Foreign currency translation |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax |  |
Beginning balance | (19,883) | (17,078)
Other comprehensive loss before reclassifications | 10,611 | (16,596)
Amounts reclassified from accumulated other comprehensive income | 0 | 0
Total other comprehensive income (loss) | 765 | (2,805)
Ending balance | (19,118) | (19,883)
Foreign currency translation, disposal of business | Discontinued Operations |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax |  |
Disposal of business | $ 9,846 | $ (13,791)

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