Annual report pursuant to Section 13 and 15(d)

Benefit Plans - Accumulated Benefit Obligation (Details)

v3.20.4
Benefit Plans - Accumulated Benefit Obligation (Details) - USD ($)
$ in Thousands
Dec. 31, 2020
Dec. 31, 2019
Defined Benefit Pension Plans | United States    
Defined Benefit Plan Disclosure    
Accumulated benefit obligation $ 288,482 $ 266,992
Defined Benefit Plan, Funded (Unfunded) Status of Plan    
Projected benefit obligation 288,482 267,392
Accumulated benefit obligation 288,482 266,992
Fair value of plan assets 263,837 231,413
Defined Benefit Pension Plans | Foreign    
Defined Benefit Plan Disclosure    
Accumulated benefit obligation 110,605 96,891
Defined Benefit Plan, Funded (Unfunded) Status of Plan    
Projected benefit obligation 92,679 82,662
Accumulated benefit obligation 88,394 80,021
Fair value of plan assets 76,658 68,104
Supplemental Retirement Plans    
Defined Benefit Plan Disclosure    
Accumulated benefit obligation $ 12,415 $ 11,652