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DIVIDENDS PER SHARE (Details) - USD ($)
$ / shares in Units, $ in Thousands
1 Months Ended 3 Months Ended
May 03, 2017
Mar. 15, 2017
Feb. 28, 2017
Mar. 31, 2017
Mar. 31, 2016
Dividends per Share [Abstract]          
Payment of cash dividends       $ 18,987 $ 19,840
Dividend Declared 2017-Q1 [Member]          
Dividends per Share [Abstract]          
Dividend payable, date declared       2017-02  
Dividend payable per share (in dollars per share)     $ 0.36    
Payment of cash dividends   $ 19,000      
Dividend payable, date to be paid       Mar. 15, 2017  
Dividend payable, date of record       Feb. 27, 2017  
Dividend Declared 2017-Q2 [Member] | Subsequent Event [Member]          
Dividends per Share [Abstract]          
Dividend payable, date declared 2016-05        
Dividend payable per share (in dollars per share) $ 0.36        
Dividend payable, date to be paid Jun. 14, 2017        
Dividend payable, date of record May 26, 2017