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GROSS VERSUS NET REVENUE RECOGNITION (Details) (USD $)
In Thousands
 3 Months Ended 6 Months Ended
Jun. 30, 2011
Jun. 30, 2010
Jun. 30, 2011
Jun. 30, 2010
GROSS VERSUS NET REVENUE RECOGNITION [Abstract]        
Franchise fees included as component of net revenue $ 37,149 $ 33,864 $ 73,960 $ 66,905