INCOME TAXES (Condensed) (Details) - USD ($) $ in Millions	3 Months Ended
	Mar. 31, 2016	Mar. 31, 2015
INCOME TAXES
Statutory federal tax rate (as a percent)	35.00%
State tax, low end of range of rate (as a percent)	6.00%
State tax, high end of range of rate (as a percent)	6.50%
Effective tax (benefit) rate (as a percent)	(37.40%)	18.30%
Benefit from reduced state deferred tax liabilities to reflect enactment of lower tax rates in some states (as a percent)		20.90%
Income taxes paid (in dollars)	$ 1.6	$ 1.1
Income tax refunds received (in dollars)	$ 0.7	$ 0.1