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SHAREHOLDERS' EQUITY (Narrative) (Details) - USD ($)
$ / shares in Units, $ in Thousands
 1 Months Ended 12 Months Ended
Aug. 31, 2014
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Expiration period   10 years    
Ordinary shares reserved for issuance   8,639,000    
Ordinary shares available for future grant   779,327    
Average market value, trading day period 30 days      
Total intrinsic value of options exercised   $ 238 $ 480  
Unrecognized compensation cost, period for recognition   11 months 1 day    
Total unrecognized compensation cost   $ 1,071 $ 1,625 $ 3,345
Total proceeds from public offering $ 45,149     $ 45,149
Additional Shares authorized 2,850,000      
Stock issued, shares 21,250,000      
Issuance expenses $ 400      
Share price $ 1.89      
Stock Option [Member]        
Weighted average grant date fair value of options granted   $ 0.78 $ 0.54 $ 0.96
Total unrecognized compensation cost   $ 1,085