Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Revenue:
Total revenue	$ 1,036		$ 2,558
Operating expenses:
Research and development	60,811	22,416	183,757	44,218
General and administrative	6,204	8,331	19,228	11,685
Total operating expenses	67,015	30,747	202,985	55,903
Loss from operations	(65,979)	(30,747)	(200,427)	(55,903)
Other expense:
Interest expense	(751)	(3)	(1,516)	(1,336)
Other expense, net	(9)	(1)	(1,166)	(1)
Net loss	$ (66,739)	$ (30,751)	$ (203,109)	$ (57,240)
Basic and diluted net loss per common share	$ (1.12)	$ (0.71)	$ (3.56)	$ (1.79)
Weighted average common shares outstanding used to calculate basic and diluted net loss per common share	59,486,626	43,490,071	56,997,039	32,041,790
License [Member]
Revenue:
Total revenue	$ 1,036		$ 2,558