Accumulated Other Comprehensive Loss (Components of Accumulated Other Comprehensive Loss) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021	Dec. 31, 2020
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period			$ 1,118,895
Other comprehensive income (loss) before reclassifications			(45,348)	$ (10,501)
Amounts reclassified from accumulated other comprehensive loss			158	121
Other comprehensive income (loss)	$ (33,519)	$ 2,816	(45,190)	(10,380)
Balance, end of period	1,106,571	1,076,662	1,106,571	1,076,662
AOCI, Pension and other postretirement benefit plans, tax	2,081	1,923	2,081	1,923	$ 2,125	$ 1,951
Accumulated Other Comprehensive Loss
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period	(56,914)	(32,771)	(45,243)	(19,575)
Other comprehensive income (loss)	(33,519)	2,816	(45,190)	(10,380)
Balance, end of period	(90,433)	(29,955)	(90,433)	(29,955)
Foreign Currency Translation Adjustments
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period			(35,641)	(10,571)
Other comprehensive income (loss) before reclassifications			(45,348)	(10,501)
Amounts reclassified from accumulated other comprehensive loss			0	0
Other comprehensive income (loss)			(45,348)	(10,501)
Balance, end of period	(80,989)	(21,072)	(80,989)	(21,072)
Pension and Other Postretirement Benefits
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Balance, beginning of period			(9,602)	(9,004)
Other comprehensive income (loss) before reclassifications			0	0
Amounts reclassified from accumulated other comprehensive loss			158	121
Other comprehensive income (loss)			158	121
Balance, end of period	$ (9,444)	$ (8,883)	$ (9,444)	$ (8,883)