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Litigation and Contingencies (Additional Information) (Details) (USD $)
In Millions, unless otherwise specified
3 Months Ended 9 Months Ended
Sep. 07, 2013
Sep. 08, 2012
Sep. 07, 2013
Sep. 08, 2012
Commitments and Contingencies Disclosure [Abstract]        
Incurred royalty expense $ 0.5 $ 0.4 $ 1.3 $ 1.3
Incurred advertising expense $ 0.9 $ 0.9 $ 3.0 $ 2.6