Pension and Postretirement Benefits (Amounts Recognized in Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Postretirement Medical Benefits
Defined Benefit Plan Disclosure [Line Items]
Unrecognized net gain (loss)	$ (1,420)	$ (470)
Unrecognized prior service cost	(652)	(743)
Accumulated other comprehensive loss, net of tax	(2,072)	(1,213)	$ 656
United States | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Unrecognized net gain (loss)	(29,344)	(48,460)
Unrecognized prior service cost	(670)	(861)
Accumulated other comprehensive loss, net of tax	(30,014)	(49,321)	(49,510)
Foreign Plan | Pension Plan
Defined Benefit Plan Disclosure [Line Items]
Unrecognized net gain (loss)	(67,192)	(93,417)
Unrecognized prior service cost	(3,389)	(3,829)
Accumulated other comprehensive loss, net of tax	$ (70,581)	$ (97,246)	$ (89,337)