CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Income Statement [Abstract]
Revenue from collaborations	$ 2,583	$ 2,571
Revenue from customers	140
Operating expenses:
Research and development	18,135	31,676
General and administrative	8,506	6,452
Total operating expenses	26,641	38,128
Loss from operations	(23,918)	(35,557)
Interest and other income (expense), net	1,002	(5)
Loss before income tax expense	(22,916)	(35,562)
Income tax expense	(39)	(53)
Net loss	(22,955)	(35,615)
Other comprehensive income (loss):
Unrealized gain (loss) on available-for-sale securities	98	(248)
Other comprehensive income (loss)	98	(248)
Comprehensive loss	$ (22,857)	$ (35,863)
Net loss per share, basic	$ (0.53)	$ (0.84)
Net loss per share, diluted	$ (0.53)	$ (0.84)
Weighted average shares of common stock, basic	42,910,065	42,511,559
Weighted average shares of common stock, diluted	42,910,065	42,511,559