CONDENSED CONSOLIDATED STATEMENTS OF COMPREHENSIVE LOSS (UNAUDITED) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Statement of Comprehensive Income [Abstract]
Net loss	$ (2,763)	$ (15,753)	$ (19,958)	$ (40,464)
Other comprehensive income (loss) before tax:
Foreign currency translation adjustment	(330)	1,277	(3,192)	2,055
Defined benefit pension plans:
Amortization of prior service cost	8	0	16	0
Amortization of net actuarial loss	79	0	158	0
Other comprehensive income (loss), before tax	(243)	1,277	(3,018)	2,055
Tax provision attributable to other comprehensive income (loss)	(5)	(23)	(5)	(46)
Other comprehensive income (loss), net of tax	(248)	1,254	(3,023)	2,009
Total comprehensive loss	$ (3,011)	$ (14,499)	$ (22,981)	$ (38,455)