NET INCOME PER SHARE (Details) - Stock Options [Member] - $ / shares	3 Months Ended		6 Months Ended
	Jun. 30, 2016	Jun. 30, 2015	Jun. 30, 2016	Jun. 30, 2015
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from earnings per share calculation (in shares)	50,000	20,000	50,000	20,000
Exercise Price of $37.64 [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from earnings per share calculation (in shares)			30,000
Exercise price (in dollars per share)	$ 37.64		$ 37.64
Exercise Price of $29.21 [Member]
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Antidilutive securities excluded from earnings per share calculation (in shares)			20,000
Exercise price (in dollars per share)	$ 29.21		$ 29.21