Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Operating expenses:
Research and development	$ 1,034	$ 3,523	$ 1,727	$ 6,845
General and administrative	1,986	2,224	3,807	3,643
Total operating expenses	3,020	5,747	5,534	10,488
Loss from operations	(3,020)	(5,747)	(5,534)	(10,488)
Other expenses, net	(15)	(65)	(68)	(128)
Net loss	$ (3,035)	$ (5,812)	$ (5,602)	$ (10,616)
Net loss per share - basic	$ (0.21)	$ (0.43)	$ (0.38)	$ (0.79)
Net loss per share - diluted	$ (0.21)	$ (0.43)	$ (0.38)	$ (0.79)
Weighted average shares outstanding, basic	14,761,261	13,603,181	14,760,538	13,429,018
Weighted average shares outstanding, diluted	14,761,261	13,603,181	14,760,538	13,429,018