STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015
Revenue:
License revenue	$ 186	$ 186
Other revenue	132	55
Total revenue	318	241
Operating expenses:
Research and development	2,705	7,221
General and administrative	8,129	8,665
Total operating expenses	10,834	15,886
Net operating loss	(10,516)	(15,645)
Other income (expense):
Interest expense	(32)	(418)
Interest expense, related parties	(55)	(437)
(Loss) gain on extinguishment of notes and convertible notes, related parties	(161)	569
Loss on extinguishment of NAU promissory note		(1,530)
Loss on extinguishment of secured promissory note		(34)
Other income (expense)	(31)	(678)
Total other income (expense)	(279)	(2,528)
Net loss	(10,795)	(18,173)
Series A convertible preferred stock dividends	(159)	(17)
Net loss and comprehensive loss	$ (10,954)	$ (18,190)
Weighted average common shares outstanding - basic and fully diluted (in shares)	6,417,936	3,852,349
Net loss per common share - basic and fully diluted (in dollars per shares)	$ (1.71)	$ (4.71)