Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Income Statement [Abstract]
Revenues	$ 0	$ 0	$ 0	$ 0
Operating expenses:
Research and development	18,379	11,959	43,304	38,056
General and administrative	8,886	4,237	28,238	12,016
Total operating expenses	27,265	16,196	71,542	50,072
Loss from operations	(27,265)	(16,196)	(71,542)	(50,072)
Other income (expense):
Amortization of financing costs	(2)	(27)	(62)	(51)
Interest income, net	4,733	450	10,314	857
Realized loss on investments, net	0	(0)	0	(42)
Total other income, net	4,731	423	10,252	764
Net loss	(22,534)	(15,773)	(61,290)	(49,308)
Other comprehensive loss, net of tax:
Unrealized gain (loss) on securities	221	111	305	(813)
Foreign currency translation loss	(86)	(223)	(108)	(399)
Comprehensive loss	$ (22,399)	$ (15,885)	$ (61,093)	$ (50,520)
Basic net loss per common share	$ (0.23)	$ (0.21)	$ (0.66)	$ (0.64)
Weighted-average shares used to compute basic net loss per share	99,845,733	76,505,383	92,481,155	76,916,845
Diluted net loss per common share	$ (0.23)	$ (0.21)	$ (0.66)	$ (0.64)
Weighted-average shares used to compute diluted net loss per share	99,845,733	76,505,383	92,481,155	76,916,845