CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020
Operating expenses
Research and development	$ 1,261	$ 2,008
General and administrative	1,187	1,336
Total operating expenses	2,448	3,344
Net operating loss	(2,448)	(3,344)
Other income
Interest income	1	20
Total other income	1	20
Net loss	$ (2,447)	$ (3,324)
Net loss per share, basic and diluted (in dollars)	$ (0.43)	$ (0.90)
Basic and diluted weighted average number of common shares outstanding	5,721	3,692