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SUBSEQUENT EVENTS (Details Textual) - $ / shares
3 Months Ended 9 Months Ended
Oct. 25, 2017
Sep. 30, 2017
Sep. 30, 2016
Sep. 30, 2017
Sep. 30, 2016
Subsequent Event [Line Items]          
Dividends declared per share (dollars per share)   $ 0.62 $ 0.57 $ 1.86 $ 1.71
Subsequent Event [Member]          
Subsequent Event [Line Items]          
Dividends declared per share (dollars per share) $ 0.68        
Dividends payable, date to be paid Jan. 02, 2018        
Dividends payable, date of record Dec. 08, 2017