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SHAREHOLDERS' EQUITY (Description of Plans) (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 31, 2019
Apr. 11, 2019
Dec. 31, 2010
Oct. 31, 2008
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Cash dividend declare per share   $ 0.45    
Dividend payable   $ 24,864    
Second Anniversary [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vested percentage 50.00%      
Third and Fourth Anniversary [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vested percentage 25.00%      
2008 Plan [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Total number of shares authorized     6,015,500  
Shares available for grant 77,888   7,015,500 1,000,000
Minimum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period for plan 2 years      
Maximum [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Vesting period for plan 4 years      
Option One [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Expiration period 6 years      
Option Two [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Expiration period 7 years      
Option Three [Member]        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Expiration period 10 years