CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Comprehensive income (loss)
Net income	$ 65,842	$ 35,920	$ 71,461
Other Comprehensive Income (Loss), Net of Tax [Abstract]
Foreign currency translation adjustment	(37,751)	(6,000)	2,371
Benefit plan adjustment	4,088	722
Net unrealized loss on available for sale investment	0	0	(5,156)
Other Comprehensive Income (Loss), Net of Tax, Total	(33,663)	(5,278)	(2,785)
Comprehensive Income (Loss), Net of Tax, Including Portion Attributable to Noncontrolling Interest, Total	32,179	30,642	68,676
Comprehensive Income (Loss), Net of Tax, Attributable to Noncontrolling Interest	(38,573)	(14,884)	(15,105)
Comprehensive Income (Loss), Net of Tax, Attributable to Parent, Total	$ (6,394)	$ 15,758	$ 53,571