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SHAREHOLDERS' EQUITY (Summary of Stock Option Activity) (Details) - USD ($)
$ / shares in Units, $ in Thousands
 6 Months Ended 12 Months Ended
Jun. 30, 2015
Dec. 31, 2014
Number of options    
Options outstanding, beginning balance 766,125  
Granted [1] 157,750  
Exercised (117,865)  
Expired & Forfeited (4,500)  
Options outstanding, ending balance 801,510 766,125
Exercisable at June 30, 2015 605,698  
Weighted average exercise price    
Options outstanding, beginning balance $ 5.38  
Granted [1] 11.11  
Exercised 3.40  
Expired & Forfeited 12.14  
Options outstanding, ending balance 6.76 $ 5.38
Exercisable at June 30, 2015 $ 6.17  
Weighted average remaining contractual term (in years)    
Outstanding 3 years 5 months 8 days 3 years 6 months 18 days
Exercisable at June 30, 2015 3 years 1 month 10 days  
Aggregate intrinsic value    
Outstanding $ 3,243 $ 5,221
Options exercisable $ 2,794  
Vested and expected to vest at June 30, 2015    
Number of options 801,510  
Weighted average exercise price $ 6.76  
Weighted average remaining contractual life 3 years 5 months 8 days  
Aggregate intrinsic value $ 3,243  
[1] Excluding 35,500 RSUs granted as described in Note 6c.