CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (24,008)	$ (14,641)	$ (28,655)	$ (18,769)	$ (58,351)
Other comprehensive income (loss), net of tax:
Change in foreign currency translation adjustments	680	413	1,010	145	302
Unrealized gain (loss) from debt securities	(769)	0	(769)	0	0
Pension benefit plan	(678)	416	833	2,568	361
Total comprehensive income (loss)	$ (24,775)	$ (13,812)	$ (27,581)	$ (16,056)	$ (57,688)