CONDENSED 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	$ 17,883	$ 28,655	$ 34,483	$ 59,873
Foreign currency translation adjustment	(33,591)	2,758	(45,348)	(10,501)
Pension and other postretirement benefits:
Actuarial net gain incurred, net of tax (Note 4)	(15)	0	(15)	0
Amortization of loss, net of tax (Note 4)	87	58	173	121
Other comprehensive income (loss)	(33,519)	2,816	(45,190)	(10,380)
Comprehensive income (loss)	$ (15,636)	$ 31,471	$ (10,707)	$ 49,493