CONDENSED 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	$ 19,035	$ 14,838	$ 33,394	$ 49,321
Foreign currency translation adjustment	(17,906)	(35,035)	(3,860)	(80,383)
Pension and other postretirement benefits:
Actuarial net loss incurred, net of tax (Note 4)	0	0	0	(15)
Amortization of loss, net of tax (Note 4)	93	87	280	260
Other comprehensive income (loss)	(17,813)	(34,948)	(3,580)	(80,138)
Comprehensive income (loss)	$ 1,222	$ (20,110)	$ 29,814	$ (30,817)