SELECTED STATEMENTS OF OPERATIONS AND COMPREHENSIVE LOSS (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
Financial expenses:
Reevaluation of fair value of warrants to purchase Ordinary Shares			$ 7,093	$ 15,496
Issuance costs related to warrants to purchase Ordinary Shares				441
Interest expense and bank fees			15	15
Foreign currency translation adjustments				61
Total financial expenses			7,108	16,013
Financial income:
Interest income			184	84
Foreign currency translation adjustments			10
Total financial income			194	84
Total financial expense, net	$ 2,755	$ 3,207	$ 6,914	$ 15,929