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SHAREHOLDERS' EQUITY (Schedule of Stock Option Activity) (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Number of options (thousands)    
Outstanding at beginning of year 1,570  
Granted 9  
Exercised (594)  
Forfeited (18)  
Outstanding at end of year 967 1,570
Exercisable at end of year 834  
Weighted average exercise price (per share)    
Outstanding at beginning of year $ 9.64  
Granted 16.44  
Exercised 10.18  
Forfeited 9.54  
Outstanding at end of year 9.38 $ 9.64
Exercisable at end of year $ 9.70  
Weighted average remaining contractual term (in years)    
Outstanding at end of year 2 years 6 months 7 days 3 years 1 month 13 days
Exercisable at end of year 2 years 2 months 1 day  
Aggregate intrinsic value    
Outstanding at beginning of year [1] $ 403  
Outstanding at end of year [1] 9,967 $ 403
Exercisable at end of year [1] $ 8,324  
Share price $ 19.68  
[1] Calculation of aggregate intrinsic value for options outstanding and exercisable is based on the share price of the Company's ordinary shares as of December 31, 2018 which was $19.68 per share.