Consolidated Statements of Comprehensive Income/(Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 39,369	$ 31,440	$ 67,444	$ 59,050
Other comprehensive income/(loss), before tax:
Foreign currency translation and other adjustments	(39,319)	13,651	(40,870)	(1,788)
Amortization of pension liability adjustments:
Amortization of prior service credit	(1,122)	(1,118)	(2,245)	(2,237)
Net actuarial loss	967	1,108	1,938	2,217
Payments and amortization related to interest rate swaps included in earnings	1,168	1,770	2,864	3,246
Derivative valuation adjustment	3,316	125	15,037	(353)
Income taxes related to items of other comprehensive income/(loss):
Amortization of prior service credit	343	335	687	671
Amortization of net actuarial loss	(296)	(332)	(593)	(665)
Payments and amortization related to interest rate swaps included in earnings	(295)	(457)	(725)	(838)
Derivative valuation adjustment	(840)	(44)	(3,809)	91
Comprehensive income	3,291	46,478	39,728	59,394
Comprehensive income attributable to the noncontrolling interest	77	226	471	43
Comprehensive income attributable to the Company	$ 3,214	$ 46,252	$ 39,257	$ 59,351