Consolidated Statements of Comprehensive Income/(Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 27,154	$ 10,823	$ 81,066	$ 78,267
Other comprehensive income/(loss), before tax:
Foreign currency translation	(15,131)	(38,971)	(4,509)	(79,841)
Reclassification of loss on pension settlement	0	42,657	0	42,657
Amortization of pension liability adjustments:
Prior service credit	(1,031)	(1,123)	(3,092)	(3,368)
Net actuarial loss	349	967	1,042	2,905
Payments and amortization related to interest rate swaps included in earnings	(3,990)	(106)	(10,891)	2,758
Derivative valuation adjustment	996	8,492	4,533	23,529
Income taxes related to items of other comprehensive income/(loss):
Reclassification of loss on pension settlement	0	(16,459)	0	(16,459)
Amortization of prior service credit	315	344	946	1,031
Amortization of net actuarial loss	(107)	(296)	(319)	(889)
Payments and amortization related to interest rate swaps included in earnings	1,009	(27)	2,755	(752)
Derivative valuation adjustment	(252)	(2,151)	(1,147)	(5,960)
Comprehensive income	9,312	4,150	70,384	43,878
Comprehensive income attributable to the noncontrolling interest	(99)	73	669	544
Comprehensive income attributable to the Company	$ 9,411	$ 4,077	$ 69,715	$ 43,334