Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Total revenue	$ 97,062	$ 133,617	$ 207,085
Operating expenses:
Research and development	192,115	210,418	189,407
General and administrative	56,687	61,033	55,038
Total operating expenses	248,802	271,451	244,445
Loss from operations	(151,740)	(137,834)	(37,360)
Other income, net	26,561	7,778	1,031
Loss before income taxes	(125,179)	(130,056)	(36,329)
Income tax expense	5,212	3,254	0
Net loss	(130,391)	(133,310)	(36,329)
Unrealized gain (loss) on marketable securities	4,759	(3,632)	(1,557)
Comprehensive loss	$ (125,632)	$ (136,942)	$ (37,886)
Net loss per share, basic	$ (1.56)	$ (1.62)	$ (0.45)
Net loss per share, diluted	$ (1.56)	$ (1.62)	$ (0.45)
Shares used in computing net loss per share, basic	83,733,730	82,467,587	80,416,936
Shares used in computing net loss per share, diluted	83,733,730	82,467,587	80,416,936