EQUITY COMPENSATION (Details 2) - Stock Options - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Stock options
Outstanding, balance at the beginning of the period (in shares)	0	112,500	163,300
Exercised (in shares)		112,500	(50,800)
Outstanding, balance at the end of the period (in shares)	0	0	112,500
Exercisable (in shares)			112,500
Weighted Average Exercise Price
Outstanding, balance at the beginning of the period (in dollars per option)		$ 23.27	$ 22.13
Exercised (in dollars per share)		$ 24.58	21.78
Outstanding, balance at the end of the period (in dollars per option)			23.27
Exercisable (in dollars per share)			$ 23.27
Intrinsic value of unexercised options if closing price of stock is less than the exercise price (in dollars per share)	$ 0.00
Aggregate intrinsic value
Weighted-average remaining contractual life of outstanding options			2 years 1 month 6 days
Range of exercise prices, low end of range (in dollars per share)			$ 21.92
Range of exercise prices, high end of range (in dollars per share)			$ 23.81
Assumptions for valuation of shares
Dividend yield (as a percent)			4.50%
Expected volatility (as a percent)			24.00%
High end of range
Aggregate intrinsic value
Aggregate intrinsic values			$ 0.1
Assumptions for valuation of shares
Expected life in months			24 months 15 days