INCOME TAXES (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Dec. 31, 2012
INCOME TAXES
Effective tax rate (as a percent)	84.70%
Uncertain income tax position	$ 2.5	$ 2.5
Interest and penalties included in uncertain income tax position	0.9	0.9
Minimum estimated change in uncertain tax positions	0.1
Maximum estimated change in uncertain tax positions	$ 0.9