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SHARE REPURCHASE PROGRAMS (Details) - USD ($)
$ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Dec. 31, 2017
Accelerated Share Repurchases [Line Items]      
Common stock repurchases $ 14,156 $ 12,922  
December 2017 Program      
Accelerated Share Repurchases [Line Items]      
Common stock repurchases $ 14,000 $ 13,000  
Common Stock      
Accelerated Share Repurchases [Line Items]      
Repurchased and retired shares (in shares) 225,844 171,304  
Common stock repurchases $ 113 $ 86  
Common Stock | December 2017 Program      
Accelerated Share Repurchases [Line Items]      
Repurchased and retired shares (in shares) 226,000 171,000  
December 2017 Program      
Accelerated Share Repurchases [Line Items]      
Maximum number of share repurchases authorization (in shares)     1,500,000.0