Consolidated Statements of Comprehensive Income/(Loss) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Statement of Comprehensive Income [Abstract]
Net income	$ 26,826	$ 39,369	$ 53,912	$ 67,444
Other comprehensive income/(loss), before tax:
Foreign currency translation	(2,818)	(39,319)	10,622	(40,870)
Amortization of pension liability adjustments:
Prior service credit	(1,030)	(1,122)	(2,061)	(2,245)
Net actuarial loss	347	967	693	1,938
Payments and amortization related to interest rate swaps included in earnings	(3,678)	1,168	(6,901)	2,864
Derivative valuation adjustment	4,199	3,316	3,537	15,037
Income taxes related to items of other comprehensive income/(loss):
Amortization of prior service credit	316	343	631	687
Amortization of net actuarial loss	(107)	(296)	(212)	(593)
Payments and amortization related to interest rate swaps included in earnings	931	(295)	1,746	(725)
Derivative valuation adjustment	(1,063)	(840)	(895)	(3,809)
Comprehensive income	23,923	3,291	61,072	39,728
Comprehensive income attributable to the noncontrolling interest	333	77	768	471
Comprehensive income attributable to the Company	$ 23,590	$ 3,214	$ 60,304	$ 39,257