Pension and Postretirement Benefits (Amounts Recognized in Balance Sheet) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Noncurrent liabilities	$ (188,999)	$ (225,994)
Postretirement Medical Benefits
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Current liabilities	(2,239)	(2,342)
Noncurrent liabilities	(14,782)	(16,306)
Funded status	(17,021)	(18,648)
United States | Pension Plan
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Noncurrent assets	22,398	0
Current liabilities	(170)	(233)
Noncurrent liabilities	(5,772)	(9,505)
Funded status	16,456	(9,738)
Foreign Plan | Pension Plan
Defined Benefit Plan, Amounts for Asset (Liability) Recognized in Statement of Financial Position [Abstract]
Noncurrent assets	22,655	18,910
Current liabilities	(7,205)	(8,121)
Noncurrent liabilities	(160,318)	(193,479)
Funded status	$ (144,868)	$ (182,690)