Consolidated Statements of Operations - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2019	Dec. 31, 2018
Operating expenses:
Research and development	$ 5,602	$ 4,931
General and administrative	5,895	7,836
Total operating expenses	11,497	12,767
Operating loss	(11,497)	(12,767)
Other income / (expense):
Interest income / (expense), net	254	206
Warrant modification expense	(666)	(765)
Derivatives loss		(11,400)
Other income	79	1,303
Other income / (expense), net	(333)	(10,656)
Net loss	$ (11,830)	$ (23,423)
Net loss per share, basic and diluted (in dollars per share)	$ (35.28)	$ (140.81)
Weighted average number of common shares outstanding, basic and diluted (In Shares)	335,350	166,348