Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Operating expenses:
Research and development	$ 16,298	$ 20,999	$ 33,470	$ 39,317
General and administrative	5,603	5,785	12,142	11,991
Restructuring and impairment charges	1,482	0	1,482	0
Total operating expenses	23,383	26,784	47,094	51,308
Loss from operations	(23,383)	(26,784)	(47,094)	(51,308)
Interest income	2,237	2,861	4,690	5,556
Interest expense	(401)	(385)	(801)	(755)
Net loss	$ (21,547)	$ (24,308)	$ (43,205)	$ (46,507)
Net loss per common share, Basic	$ (0.3)	$ (0.34)	$ (0.59)	$ (0.64)
Net loss per common share, Diluted	$ (0.3)	$ (0.34)	$ (0.59)	$ (0.64)
Weighted-average shares used to compute net loss per common share, Basic	72,845,869	72,461,850	72,822,890	72,395,410
Weighted-average shares used to compute net loss per common share, Diluted	72,845,869	72,461,850	72,822,890	72,395,410