Condensed Consolidated Statements of Operations - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Operating expenses:
Research and development	$ 7,292	$ 13,575
General and administrative	4,346	3,793
Restructuring charges	5,107	0
Total operating expenses	16,745	17,368
Loss from operations	(16,745)	(17,368)
Other income (expense), net	(309)	93
Loss before income taxes	(17,054)	(17,275)
Income tax expense	5	0
Net loss	$ (17,059)	$ (17,275)
Net loss per share, basic (in dollars per share)	$ (0.72)	$ (0.74)
Net loss per share, diluted (in dollars per share)	$ (0.72)	$ (0.74)
Weighted average common shares outstanding, basic (in shares)	23,618,559	23,216,206
Weighted average common shares outstanding, diluted (in shares)	23,618,559	23,216,206