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SHAREHOLDERS' EQUITY (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended
Mar. 31, 2016
Mar. 31, 2017
Class of Stock [Line Items]    
Repurchase of common stock $ 2,901  
Other than accelerated share repurchase program    
Class of Stock [Line Items]    
Remaining authorized repurchase amount (up to)   $ 299,700
Repurchase of common stock (in shares) 48,816  
Repurchase of common stock $ 2,900  
Repurchase of common stock (in USD per share) $ 59.37