FAIR VALUE MEASUREMENT (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Liabilities:
Warrants to purchase Ordinary Shares	$ (15,544)	$ (11,343)
Recurring basis
Assets:
Reverse Repurchase Agreements	24,405	30,407
Money Market Funds	279	185
Total financial assets	24,684	30,592
Liabilities:
Warrants to purchase Ordinary Shares	(15,544)	(11,343)
Total financial liabilities	(15,544)	(11,343)
Level 1 | Recurring basis
Assets:
Money Market Funds	279	185
Total financial assets	279	185
Level 2 | Recurring basis
Assets:
Reverse Repurchase Agreements	24,405	30,407
Total financial assets	24,405	30,407
Level 3 | Recurring basis
Liabilities:
Warrants to purchase Ordinary Shares	(15,544)	(11,343)
Total financial liabilities	$ (15,544)	$ (11,343)