Consolidated Statements of Operations $ in Thousands	3 Months Ended
	Mar. 31, 2020 USD ($) $ / shares shares	Mar. 31, 2019 USD ($) $ / shares shares
Operating expenses:
Research and development	$ 1,051	$ 1,110
General and administrative	1,377	1,668
Total operating expenses	2,428	2,778
Operating loss	(2,428)	(2,778)
Other income / (expense):
Interest income	14	99
Other income		44
Other income / (expense), net	14	143
Net loss	$ (2,414)	$ (2,635)
Net loss per share, basic and diluted (in dollars per share) | $ / shares	$ (2.47)	$ (8.49)
Weighted average number of common shares outstanding, basic and diluted (In Shares) | shares	976,121	310,348