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SHARE-BASED COMPENSATION (Option Activity) (Details) - USD ($)
$ / shares in Units, $ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Number of options      
Outstanding at the beginning of the year 208,222 207,769 230,958
Granted 318,094 9,842 9,856
Exercised    
Forfeited (103,532) (9,389) (33,045)
Outstanding at the end of the year 422,784 208,222 207,769
Exercisable at the end of the year 101,040 134,550 106,725
Weighted average of exercise price      
Outstanding at the beginning of the year $ 46.32 $ 47.04 $ 48.12
Granted 4.00 23.88 32.64
Exercised    
Forfeited 45.88 39.24 50.52
Outstanding at the end of the year 15.54 46.32 47.04
Exercisable at the end of the year $ 46.18 $ 48.00 $ 46.80
Weighted average remaining contractual life      
Outstanding at the beginning of the year 7 years 1 month 9 days 7 years 4 months 20 days 7 years 11 months 26 days
Outstanding at the end of the year 8 years 7 months 6 days 7 years 1 month 9 days 7 years 4 months 20 days
Exercisable at the end of the year 4 years 7 months 10 days 5 years 11 months 26 days 6 years 4 months 2 days
Aggregate intrinsic value      
Outstanding at the beginning of the year $ (2) $ (2) $ (2)
Outstanding at the end of the year (2) (2) (2)
Exercisable at the end of the year $ (2) $ (2) $ (2)
RSUs [Member]      
Number of options      
Outstanding at the beginning of the year 44,473
RSUs granted 95,719 49,856
RSUs vested (4,818) (1,033)
RSUs forfeited (25,905) (4,350)
Outstanding at the end of the year 109,469 44,473