Accumulated Other Comprehensive Income (Loss) (Components of AOCI) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Dec. 31, 2022	Dec. 31, 2021
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	$ (641,972)	$ (559,026)
Other comprehensive income (loss) before reclassifications (3)	12,641	(14,787)
Amounts reclassified from AOCL	452	1,659
Other comprehensive income (loss)	13,093	(13,128)
Ending balance	(628,879)	(572,154)
Foreign currency translation, taxes	717	(13,306)
Foreign currency translation items
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(554,683)	(456,025)
Other comprehensive income (loss) before reclassifications (3)	13,506	(16,744)
Amounts reclassified from AOCL	0	0
Other comprehensive income (loss)	13,506	(16,744)
Ending balance	(541,177)	(472,769)
Pension and other post-retirement effects
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(86,356)	(101,665)
Other comprehensive income (loss) before reclassifications (3)	(865)	1,957
Amounts reclassified from AOCL	422	1,630
Other comprehensive income (loss)	(443)	3,587
Ending balance	(86,799)	(98,078)
Cash flow hedging activity
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Beginning balance	(933)	(1,336)
Other comprehensive income (loss) before reclassifications (3)	0	0
Amounts reclassified from AOCL	30	29
Other comprehensive income (loss)	30	29
Ending balance	(903)	(1,307)
Non- controlling Interests
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Other comprehensive income (loss)	(3,161)	1,336
Accumulated other comprehensive income (loss), foreign currency translation adjustment, net of tax	$ 2,700	5,900	$ 5,800	$ 4,600
Non- controlling Interests | Currency Swap
Accumulated Other Comprehensive Income (Loss), Net of Tax [Roll Forward]
Foreign currency translation, taxes		$ 8,600