Pensions and Other Postretirement Benefits (Projected and Accumulated Benefit Obligations) (Details) - Pension Plans - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
United States
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation, all plans	$ 2,626	$ 2,747
Plans for which the accumulated benefit obligation exceeds plan assets:
Projected benefit obligation	2,626	2,747
Accumulated benefit obligation	2,626	2,747
Fair value of plan assets	0	0
Foreign Plan
Defined Benefit Plan Disclosure [Line Items]
Accumulated benefit obligation, all plans	23,796	25,148
Plans for which the accumulated benefit obligation exceeds plan assets:
Projected benefit obligation	23,451	25,107
Accumulated benefit obligation	22,634	24,099
Fair value of plan assets	$ 17,778	$ 16,259