Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Statement of Comprehensive Income [Abstract]
Net Income (Loss)	$ (402,266)	$ (223,485)	$ (100,077)
Other comprehensive loss:
Unrealized gains (losses) on investments	538	(120)	(241)
Foreign currency translation adjustments, net	2	0	0
Comprehensive Loss	$ (401,726)	$ (223,605)	$ (100,318)