SIGNIFICANT ACCOUNTING POLICIES - SEVERANCE PAY AND FAIR VALUE OF FINANCIAL INSTRUMENTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Mar. 19, 2015
Severance pay
Number of month's salary eligible to employees for each year of employment as severance pay	1 month
Percentage of monthly salary eligible to employees as severance pay	8.33%
Expense related to severance pay	$ 49	$ 66
Financial liabilities, fair value
Warrants to purchase Convertible Preferred Shares		6,072
Convertible Preferred Shares
Financial liabilities, fair value
Warrants to purchase Convertible Preferred Shares			$ 6,032
Recurring basis
Financial assets, fair value
Reverse repurchase agreement	31,000
Total financial assets	31,000
Financial liabilities, fair value
Total financial liabilities		6,072
Recurring basis | Convertible Preferred Shares
Financial liabilities, fair value
Warrants to purchase Convertible Preferred Shares		6,072
Level 2 | Recurring basis
Financial assets, fair value
Reverse repurchase agreement	31,000
Total financial assets	$ 31,000
Level 3 | Recurring basis
Financial liabilities, fair value
Total financial liabilities		6,072
Level 3 | Recurring basis | Convertible Preferred Shares
Financial liabilities, fair value
Warrants to purchase Convertible Preferred Shares		$ 6,072