Pension and Postretirement Benefits (Funded Status) (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Postretirement Medical Benefits
Funded status of plan:
Benefit Obligation	$ (13,353)	$ (17,021)	$ (18,648)
Funded status	(13,353)	(17,021)
United States | Pension Plan
Funded status of plan:
Plan assets, at fair value	365,044	488,281	477,680
Benefit Obligation	(382,959)	(471,825)	(487,418)
Funded status	(17,915)	16,456
Foreign Plan | Pension Plan
Funded status of plan:
Plan assets, at fair value	172,276	275,941	287,308
Benefit Obligation	(268,364)	(420,809)	$ (469,998)
Funded status	$ (96,088)	$ (144,868)