Annual report pursuant to Section 13 and 15(d)

Stockholders' Equity - Change by Component (Details)

v3.20.4
Stockholders' Equity - Change by Component (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2020
Dec. 31, 2019
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax    
Beginning balance $ 1,779,450  
Ending balance 1,277,126 $ 1,779,450
Discontinued Operations    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax    
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax (14,575)  
Total     
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax    
Beginning balance (15,348) (39,104)
Other comprehensive loss before reclassifications (14,621) 21,226
Amounts reclassified from accumulated other comprehensive income 129 656
Total other comprehensive income (loss) 83 21,882
Tax Cuts and Jobs Act, reclassification from AOCI to retained earnings, tax effect   1,874
Ending balance (15,265) (15,348)
Defined benefit and other postretirement plans    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax    
Beginning balance 3,568 (546)
Other comprehensive loss before reclassifications 1,850 2,497
Amounts reclassified from accumulated other comprehensive income 88 (67)
Total other comprehensive income (loss) 1,710 2,430
Tax Cuts and Jobs Act, reclassification from AOCI to retained earnings, tax effect   1,684
Ending balance 5,278 3,568
Defined benefit and other postretirement plans, disposal of business | Discontinued Operations    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax    
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax 228  
Net gain (loss) from hedging activities    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax    
Beginning balance (1,838) 637
Other comprehensive loss before reclassifications 125 (3,388)
Amounts reclassified from accumulated other comprehensive income 41 723
Total other comprehensive income (loss) 1,178 (2,665)
Tax Cuts and Jobs Act, reclassification from AOCI to retained earnings, tax effect   190
Ending balance (660) (1,838)
Net gain (loss) from hedging activities, disposal of business | Discontinued Operations    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax    
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax (1,012)  
Foreign currency translation    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax    
Beginning balance (17,078) (39,195)
Other comprehensive loss before reclassifications (16,596) 22,117
Amounts reclassified from accumulated other comprehensive income 0 0
Total other comprehensive income (loss) (2,805) 22,117
Tax Cuts and Jobs Act, reclassification from AOCI to retained earnings, tax effect   0
Ending balance (19,883) $ (17,078)
Foreign currency translation, disposal of business | Discontinued Operations    
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax    
Reclassification from Accumulated Other Comprehensive Income, Current Period, Net of Tax $ (13,791)