Condensed Consolidated Statements of Operations and Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021
Operating expenses:
Research and development	$ 920	$ 1,143
General and administrative	1,955	2,187
Total operating expenses	2,875	3,330
Loss from operations	(2,875)	(3,330)
Interest income		6
Loss before income taxes	(2,875)	(3,324)
Provision for income taxes	0	0
Net loss	(2,875)	(3,324)
Other comprehensive loss, net of tax	(1)	(7)
Comprehensive loss	$ (2,876)	$ (3,331)
Loss per share:
Net loss per share, basic	$ (0.11)	$ (0.15)
Net loss per share, diluted	$ (0.11)	$ (0.15)
Weighted average common shares outstanding:
Basic	26,661,771	21,615,626
Diluted	26,661,771	21,615,626