Basis Of Presentation Basis of Presentation Narrative (Details) (USD $)	3 Months Ended	9 Months Ended		12 Months Ended
	Sep. 30, 2012	Sep. 30, 2012	May 30, 2012 Acquired restaurants [Member]	Dec. 30, 2012 Minimum [Member]	Dec. 30, 2012 Maximum [Member]
Entity Information [Line Items]
Weeks In Fiscal Period	13	39		52	53
Long-term Debt, Fair Value	$ 163,100,000	$ 163,100,000
Number of Restaurants	572	572	278
Number of States in which Entity Operates	13	13
Line of Credit Facility, Amount Outstanding	$ 0	$ 0