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SUBSEQUENT EVENTS (Details) - USD ($)
$ / shares in Units, $ in Thousands
9 Months Ended
Oct. 27, 2017
Oct. 02, 2017
Sep. 30, 2017
Sep. 30, 2016
SUBSEQUENT EVENTS        
Dividend paid in cash     $ 11,778 $ 11,754
Subsequent event        
SUBSEQUENT EVENTS        
Quarterly dividend declared (in dollars per share)   $ 0.18    
Dividend paid in cash $ 3,900