EQUITY COMPENSATION (Details 2) (USD $)	0 Months Ended	3 Months Ended
	Dec. 31, 2010	Mar. 31, 2014	Mar. 31, 2015
Stock options
Outstanding, balance at the beginning of the period (in shares)			0
Outstanding, balance at the end of the period (in shares)			0
Stock Options
Stock options
Vesting period	3 years
Expiration period	10 years
Outstanding, balance at the beginning of the period (in shares)		112,500
Exercised (in shares)		(48,300)
Outstanding, balance at the end of the period (in shares)		64,200
Exercisable (in shares)		64,200
Weighted Average Exercise Price
Outstanding, balance at the beginning of the period (in dollars per option)		$ 23.27
Exercised (in dollars per share)		$ 23.70
Outstanding, balance at the end of the period (in dollars per option)		$ 23.81
Exercisable (in dollars per share)		$ 23.81