Consolidated 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 Loss	$ (373,630)	$ (295,350)	$ (241,846)
Other comprehensive income (loss):
Unrealized gain (loss) on available-for-sale securities	500	48	(127)
Comprehensive loss	$ (373,130)	$ (295,302)	$ (241,973)