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NET INCOME PER SHARE (Details) - Stock Options [Member] - $ / shares
3 Months Ended 9 Months Ended
Sep. 30, 2016
Sep. 30, 2015
Sep. 30, 2016
Sep. 30, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]        
Antidilutive securities excluded from earnings per share calculation (in shares) 20,000 20,000 20,000 20,000
Exercise price (in dollars per share) $ 29.21   $ 29.21