Condensed Consolidated Statements of Operations (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2023	Sep. 30, 2022	Sep. 30, 2023	Sep. 30, 2022
Revenue
Total revenue	$ 2,756	$ 4,956	$ 5,520	$ 7,663
Operating expenses
Research and development	8,730	18,668	35,435	48,985
General and administrative	2,940	2,836	9,499	9,651
Total operating expenses	11,670	21,504	44,934	58,636
Loss from operations	(8,914)	(16,548)	(39,414)	(50,973)
Other income (expense), net:
Interest income	209	147	1,028	220
Change in fair value of warrant liability	29,231	0	25,616	1,410
Other income, net	700	738	2,048	2,146
Total other income (expense), net	30,140	885	28,692	3,776
Net income (loss)	$ 21,226	$ (15,663)	$ (10,722)	$ (47,197)
Net income (loss) per share
Basic (in dollars per share)	$ 0.28	$ (0.51)	$ (0.14)	$ (1.72)
Diluted (in dollars per share)	$ 0.28	$ (0.51)	$ (0.38)	$ (1.72)
Weighted-average shares used to compute net income (loss) per share
Basic (in shares)	75,739	30,518	75,727	27,419
Diluted (in shares)	76,093	30,518	95,441	27,419
Collaborative Arrangement [Member]
Revenue
Total revenue	$ 2,756	$ 4,956	$ 5,520	$ 7,663