CONSOLIDATED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Operating expenses:
Research and development	$ 133,070	$ 118,870
General and administrative	48,261	52,332
Impairment costs	18,570
Total operating expenses	199,901	171,202
Loss from operations	(199,901)	(171,202)
Total other income (loss), net:
Interest income	5,734	1,876
Other income (loss), net	3,623	351
Loss before income taxes	(190,544)	(168,975)
Income tax benefit	(126)	(265)
Net loss	$ (190,418)	$ (168,710)
Net loss per share - basic	$ (1.83)	$ (2.2)
Net loss per share - diluted	$ (1.83)	$ (2.2)
Weighted-average common shares outstanding - basic	104,057,220	76,654,856
Weighted-average common shares outstanding - diluted	104,057,220	76,654,856
Comprehensive loss:
Net Income (Loss)	$ (190,418)	$ (168,710)
Other comprehensive income (loss), net of tax:
Unrealized gain (loss) on available-for-sale securities	406	(313)
Total other comprehensive (income) loss	406	(313)
Comprehensive loss	$ (190,012)	$ (169,023)