Consolidated Statements of Comprehensive Income/(Loss) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income	$ 28,075	$ 27,609
Other comprehensive income/(loss), before tax:
Foreign currency translation and other adjustments	(1,551)	(15,439)
Amortization of pension liability adjustments:
Amortization of prior service credit	(1,123)	(1,119)
Net actuarial loss	971	1,109
Payments and amortization related to interest rate swaps included in earnings	1,696	1,476
Derivative valuation adjustment	11,721	(478)
Income taxes related to items of other comprehensive income/(loss):
Amortization of prior service credit	344	336
Amortization of net actuarial loss	(297)	(333)
Payments and amortization related to interest rate swaps included in earnings	(430)	(381)
Derivative valuation adjustment	(2,969)	135
Comprehensive income/(loss)	36,437	12,915
Comprehensive income/(loss) attributable to the noncontrolling interest	394	(183)
Comprehensive income/(loss) attributable to the Company	$ 36,043	$ 13,098