Condensed Consolidated Statements of Comprehensive Loss - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Income Statement [Abstract]
REVENUES	$ 156	$ 27
OPERATING EXPENSES
Research and development	2,110	1,209
General and administrative	2,786	1,752
Depreciation and amortization	188	145
TOTAL OPERATING EXPENSES	5,084	3,106
OPERATING LOSS	(4,928)	(3,079)
OTHER INCOME
Interest and investment income	9	4
TOTAL OTHER INCOME	9	4
LOSS BEFORE INCOME TAXES	(4,919)	(3,075)
Provision for (benefit from) income taxes	25	(1)
NET LOSS	(4,894)	(3,076)
Foreign currency translation adjustment, net of tax	18	0
COMPREHENSIVE LOSS	$ (4,876)	$ (3,076)
NET LOSS PER SHARE - BASIC AND DILUTED (in dollars per share)	$ (0.37)	$ (0.42)
Weighted average shares outstanding-basic and diluted (in shares)	13,393,190	7,337,572