CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Statement of Comprehensive Income [Abstract]
Collaboration revenue	$ 33,971	$ 2,702
Operating expenses:
Research and development	93,085	100,392
General and administrative	36,835	32,573
Total operating expenses	129,920	132,965
Loss from operations	(95,949)	(130,263)
Other income:
Interest income	185	1,569
Total other income	185	1,569
Net loss	$ (95,764)	$ (128,694)
Net loss per share-basic and diluted	$ (1.73)	$ (2.80)
Weighted average common shares outstanding-basic and diluted	55,283,318	45,910,787