WARRANTS TO PURCHASE ORDINARY SHARES (Details) - USD ($) $ / shares in Units, $ in Thousands			6 Months Ended	12 Months Ended
	May 25, 2017	Apr. 25, 2017	Jun. 30, 2017	Dec. 31, 2016
Assumptions used in determination of fair value
Proceeds from warrants exercised by shareholders			$ 4,866
Fair value adjustment for reclassification from warrant liability to equity			5,177
Reevaluation of fair value of warrants to purchase Ordinary Shares			15,496
Liability related to warrants			24,391	$ 7,078
Warrant to purchase Ordinary Shares | Private Placement
Assumptions used in determination of fair value
Exercise of warrants into Ordinary Shares (in shares)	1,351,766
Proceeds from warrants exercised by shareholders	$ 4,866
Fair value adjustment for reclassification from warrant liability to equity	$ 5,177
Reevaluation of fair value of warrants to purchase Ordinary Shares			15,496
Liability related to warrants			$ 24,391
Warrants issued on August 2016: | Monte Carlo Option Pricing Model | Private Placement
Assumptions used in determination of fair value
Risk-free interest rate (as a percent)	1.65%
Expected life (in years)	4 years 2 months 9 days
Expected dividend yield (as a percent)	0.00%		0.00%	0.00%
Fair value per warrant (in dollars)	$ 3.83		$ 3.32	$ 1.08
Warrants issued on August 2016: | Monte Carlo Option Pricing Model | Private Placement | Minimum
Assumptions used in determination of fair value
Risk-free interest rate (as a percent)			1.49%	1.50%
Expected volatility (as a percent)	65.60%		64.60%	65.50%
Expected life (in years)			2 years 8 months 1 day	3 years 1 month 21 days
Warrants issued on August 2016: | Monte Carlo Option Pricing Model | Private Placement | Maximum
Assumptions used in determination of fair value
Risk-free interest rate (as a percent)			1.74%	1.84%
Expected volatility (as a percent)	85.00%		91.80%	85.50%
Expected life (in years)			4 years 1 month 2 days	4 years 7 months 2 days
Warrants issued on April 2017: | Monte Carlo Option Pricing Model | Private Placement
Assumptions used in determination of fair value
Expected dividend yield (as a percent)		0.00%	0.00%
Fair value per warrant (in dollars)		$ 2.78	$ 2.83
Warrants issued on April 2017: | Monte Carlo Option Pricing Model | Private Placement | Minimum
Assumptions used in determination of fair value
Risk-free interest rate (as a percent)		1.82%	1.62%
Expected volatility (as a percent)		65.70%	64.60%
Expected life (in years)		4 years 8 months 23 days	3 years 4 months 24 days
Warrants issued on April 2017: | Monte Carlo Option Pricing Model | Private Placement | Maximum
Assumptions used in determination of fair value
Risk-free interest rate (as a percent)		1.87%	1.86%
Expected volatility (as a percent)		80.70%	86.30%
Expected life (in years)		5 years	4 years 9 months 26 days