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SHAREHOLDERS' EQUITY (Schedule of Stock Option Activity) (Details) - Employee and director [Member]
$ / shares in Units, $ in Thousands
6 Months Ended
Jun. 30, 2020
USD ($)
$ / shares
shares
Number of options  
Outstanding at January 1, 2020 | shares 3,168,980
Granted | shares
Exercised | shares (77,500)
Forfeited | shares (72,500)
Outstanding at June 30, 2020 | shares 3,018,980
Exerciable at June 30, 2020 | shares 1,423,855
Weighted-average exercise price  
Outstanding at January 1, 2020 | $ / shares $ 6.9
Granted | $ / shares
Exercised | $ / shares 5.3
Forfeited | $ / shares 8.5
Outstanding at June 30, 2020 | $ / shares 6.9
Exercisable at June 30, 2020 | $ / shares $ 5.0
Weighted-average remaining contractual term (in years)  
Outstanding at June 30, 2020 3 years 4 months 24 days
Exercisable at June 30, 2020 2 years 2 months 12 days
Aggregate intrinsic value  
Outstanding at June 30, 2020 | $ $ 2,298
Exercisable at June 30, 2020 | $ $ 2,133