Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenue:
Total revenue	$ 174	$ 1,399	$ 2,161	$ 15,095
Operating expenses:
Research and development	11,977	14,853	44,328	40,287
General and administrative	6,952	6,839	23,452	20,015
Total operating expenses	18,929	21,692	67,780	60,302
Loss from operations	(18,755)	(20,293)	(65,619)	(45,207)
Other income (expense):
Interest income	288	36	427	77
Other income (expense), net	24	(24)	25	(107)
Total other income (expense)	312	12	452	(30)
Loss before income tax expense	(18,443)	(20,281)	(65,167)	(45,237)
Income tax benefit (expense)	209	(26)	174	(118)
Net loss	$ (18,234)	$ (20,307)	$ (64,993)	$ (45,355)
Net loss per share, basic	$ (0.19)	$ (0.31)	$ (0.81)	$ (0.69)
Weighted-average common shares outstanding, basic	94,197,958	65,789,449	80,574,683	65,675,915
Net loss per share, diluted	$ (0.19)	$ (0.31)	$ (0.81)	$ (0.69)
Weighted-average common shares outstanding, diluted	94,197,958	65,789,449	80,574,683	65,675,915
License [Member]
Revenue:
Total revenue	$ 0	$ 0	$ 0	$ 12,000
Development Fee [Member]
Revenue:
Total revenue	$ 174	$ 1,399	$ 2,161	$ 3,095