Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
Income Statement [Abstract]
Net loss	$ (163,141)	$ (213,717)	$ (395,064)	$ (417,371)
Other comprehensive income (loss):
Unrealized gain (loss) on investments	260	3,996	(338)	2,094
Pension actuarial gain (loss)	50	10	144	(152)
Total other comprehensive income (loss)	310	4,006	(194)	1,942
Comprehensive loss	$ (162,831)	$ (209,711)	$ (395,258)	$ (415,429)