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INCOME TAXES (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended
Mar. 31, 2013
Mar. 31, 2012
Dec. 31, 2012
INCOME TAXES      
Effective tax rate (as a percent) 39.80% 38.20%  
Unrecognized tax benefits, which would affect the effective tax rate if recognized $ 0.9   $ 1.2