Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Operating expenses:
Research and development	$ 7,648	$ 9,037
General and administrative	6,670	3,787
Total operating expenses	14,318	12,824
Loss from operations	(14,318)	(12,824)
Other income (expenses):
Interest income	97	17
Interest expense	0	(10)
Other income	113	24
Total other income, net	210	31
Loss from continuing operations	(14,108)	(12,793)
Loss on investment in joint venture	390	482
Net loss	$ (14,498)	$ (13,275)
Net loss per common share, basic and diluted	$ (0.48)	$ (0.60)
Weighted average common shares outstanding, basic and diluted	30,318,405	22,244,883
Net unrealized loss on marketable securities	$ 122	$ 0
Other comprehensive loss	(122)	0
Comprehensive loss	$ (14,620)	$ (13,275)