CONDENSED 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	$ 17,864	$ 17,883	$ 14,359	$ 34,483
Foreign currency translation adjustment	4,390	(33,591)	14,046	(45,348)
Pension and other postretirement benefits:
Actuarial net loss incurred, net of tax (Note 4)	0	(15)	0	(15)
Amortization of loss, net of tax (Note 4)	93	87	187	173
Other comprehensive income (loss)	4,483	(33,519)	14,233	(45,190)
Comprehensive income (loss)	$ 22,347	$ (15,636)	$ 28,592	$ (10,707)