STATEMENT OF CHANGES IN SHAREHOLDERS' EQUITY (DEFICIT) - 3 months ended Mar. 31, 2017 - USD ($) $ in Thousands	Ordinary Shares	Additional paid-in capital	Accumulated deficit	Total
Balance, beginning at Dec. 31, 2016	$ 51	$ 103,430	$ (89,170)	$ 14,311
Balance, beginning (in shares) at Dec. 31, 2016	20,139,826
Increase (decrease) in Stockholders' Equity (Deficit)
Stock-based compensation		245		245
Net loss			(18,559)	(18,559)
Balance, ending at Mar. 31, 2017	$ 51	$ 103,675	$ (107,729)	$ (4,003)
Balance, ending (in shares) at Mar. 31, 2017	20,139,826