Pensions and Other Postretirement Benefits (Unrecognized Actuarial Gains and Losses) (Details) - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Pension Plans | United States
Defined Benefit Plan Disclosure [Line Items]
Unrecognized net actuarial loss	$ 693	$ 823
Unrecognized prior service cost	0	0
Benefit plans, accumulated other comprehensive income (loss) before tax	693	823
Pension Plans | Foreign Plan
Defined Benefit Plan Disclosure [Line Items]
Unrecognized net actuarial loss	6,709	9,008
Unrecognized prior service cost	55	60
Benefit plans, accumulated other comprehensive income (loss) before tax	6,764	9,068
OPEB Plans
Defined Benefit Plan Disclosure [Line Items]
Unrecognized net actuarial loss	(28)	583
Benefit plans, accumulated other comprehensive income (loss) before tax	$ (28)	$ 583