Statements of Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Net loss	$ (71,317)	$ (56,693)
Other comprehensive loss:
Gross unrealized loss on marketable securities	(423)	0
Total comprehensive loss	$ (71,740)	$ (56,693)