Summary Of Refranchisings, Franchisee Development And Acquisitions (Number Of Restaurants Sold And Developed By Franchisees And Related Gains And Fees Recognized) (Details) (USD $) In Thousands, unless otherwise specified	4 Months Ended
	Jan. 20, 2013 restaurant	Jan. 22, 2012 restaurant
Summary Of Refranchisings, Franchisee Development And Acquisitions [Abstract]
New restaurants opened by franchisees	20	20
Initial franchise fees	$ 646	$ 720
Proceeds	833	1,249
Net assets sold (primarily property and equipment)	(85)	(79)
Goodwill related to the sale of company-operated restaurants	0	(48)
Gains on the sale of company-operated restaurants	$ 748	$ 1,122