CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Operating expenses
Research and development	$ 4,585	$ 4,603
General and administrative	4,108	3,379
Impairment of technology license	0	608
Total operating expenses	8,693	8,590
Net operating loss	(8,693)	(8,590)
Other income (loss)
Interest income	94	7
Total other income	94	7
Net loss	$ (8,599)	$ (8,583)
Net loss per share, basic and diluted (in dollars)	$ (3.24)	$ (14.38)
Basic and diluted weighted average number of common shares outstanding	2,657	597