Condensed Consolidated Statements of Operations and Comprehensive Loss (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Operating expenses:
Research and development	$ 577	$ 3,852	$ 1,273	$ 6,521
General and administrative	2,032	1,545	5,989	3,994
Total operating expenses	2,609	5,397	7,262	10,515
Loss from operations	(2,609)	(5,397)	(7,262)	(10,515)
Other income (expense):
Interest expense	(32)	(685)	(426)	(976)
Other income (expense), net	2	(9)	(1)	(24)
Reorganization items, net	(29)	(63)	(66)	(187)
Net loss	(2,668)	(6,154)	(7,755)	(11,702)
Other comprehensive income
Comprehensive loss	$ (2,668)	$ (6,154)	$ (7,755)	$ (11,702)
Basic and diluted net loss per common share	$ (0.02)	$ (0.41)	$ (0.1)	$ (0.78)
Weighted average common shares outstanding used to calculate basic and diluted net loss per common share	109,377,584	14,977,397	79,517,510	14,977,397