Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Operating expenses:
Research and development	$ 16,391	$ 39,528	$ 77,308	$ 94,025
General and administrative	8,683	11,153	30,019	29,518
Total operating expenses	25,074	50,681	107,327	123,543
Loss from operations	(25,074)	(50,681)	(107,327)	(123,543)
Other income (expense):
Interest income	9	37	50	143
Interest expense	(1,241)	(543)	(3,002)	(737)
Other expense	(1)		(12)
Total other expense, net	(1,233)	(506)	(2,964)	(594)
Net loss	$ (26,307)	$ (51,187)	$ (110,291)	$ (124,137)
Net loss per common share, basic	$ (0.64)	$ (1.35)	$ (2.77)	$ (3.31)
Net loss per common share, diluted	$ (0.64)	$ (1.35)	$ (2.77)	$ (3.31)
Weighted average common shares outstanding, basic	40,937,808	38,003,954	39,761,764	37,495,537
Weighted average common shares outstanding, diluted	40,937,808	38,003,954	39,761,764	37,495,537