CONSOLIDATED STATEMENTS OF COMPREHENSIVE INCOME (LOSS) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024	Dec. 31, 2024
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ (37,270)	$ (30,570)	$ (111,728)	$ (102,705)	$ (168,627)
Other comprehensive income (loss), net of tax:
Change in foreign currency translation adjustments	(198)	64	121	(161)	(1,200)
Pension benefit plan	(499)	(1,927)	(427)	252	1,169
Total comprehensive income (loss)	$ (37,967)	$ (32,433)	$ (112,034)	$ (102,614)	$ (168,658)