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STOCK REPURCHASE PROGRAM (Details) - USD ($)
shares in Thousands, $ in Thousands
3 Months Ended
Mar. 31, 2019
Mar. 31, 2018
Apr. 18, 2019
Oct. 20, 2016
Stock repurchase program        
Aggregate amount of share repurchases (in dollars) $ 15,000 $ 3,905    
Common stock repurchased (retired and held in treasury) (in shares) 159 189    
Common stock repurchased (retired and held in treasury) $ 15,000 $ 16,700    
Common stock repurchased and retired (in shares)   144    
Common stock repurchased and retired   $ 12,797    
Stock Repurchase Program October 20, 2016        
Stock repurchase program        
Share repurchases authorized amount       $ 350,000
Stock Repurchase Program April 18, 2019        
Stock repurchase program        
Share repurchases authorized amount     $ 350,000