STATEMENT OF CHANGES IN SHAREHOLDERS' EQUITY - 6 months ended Jun. 30, 2018 - USD ($) $ in Thousands		Ordinary Shares Restricted share units		Ordinary Shares		Additional paid-in capital Restricted share units	[3]	Additional paid-in capital	Receivables on account of shares		Accumulated deficit	Total
Balance, beginning at Dec. 31, 2017				$ 69				$ 136,117			$ (112,375)	$ 23,811
Balance, beginning (in shares) at Dec. 31, 2017				26,572,719
Increase (decrease) in Stockholders' Equity
Stock-based compensation								813				813
Exercise of options				$ 1	[1]			151	$ (32)	[2]		119
Exercise of options (in shares)				46,220
Exercise of warrants	[1]			$ 1								1
Exercise of warrants (in shares)				10,191
RSUs released		$ 1	[1]			$ (1)
RSUs released (in shares)		113,658
Net loss											(20,425)	(20,425)
Balance, ending at Jun. 30, 2018				$ 69				$ 137,081	$ (32)		$ (132,800)	$ 4,318
Balance, ending (in shares) at Jun. 30, 2018				26,742,788

[1] Represents a positive amount lower than $1.

[2] An amount of $32 was not received as of June 30, 2018.

[3] Represents a negative amount higher than ($1).