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SHAREHOLDERS' EQUITY (Description of Plans) (Details) - USD ($)
$ in Thousands
6 Months Ended
Jun. 30, 2019
Dec. 31, 2010
Oct. 31, 2008
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Incremental effect $ 970    
Recorded incremental effect $ 685    
2008 Plan [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Total number of shares authorized   5,965,500  
Shares available for grant 169,138 6,965,500 1,000,000