Summary Of Refranchisings, Franchisee Development And Acquisitions (Purchase Price Allocations On Franchise Acquisitions) (Details) (USD $) In Thousands, unless otherwise specified	4 Months Ended
	Jan. 20, 2013 restaurant	Jan. 22, 2012 restaurant
Qdoba [Member]
Summary Of Refranchisings, Franchisee Development And Acquisitions [Line Items]
Restaurants acquired from franchisees	6	11
Property and equipment	$ 993	$ 2,942
Reacquired franchise rights	62	126
Liabilities assumed	(93)	(30)
Goodwill	5,488	3,157
Total consideration	6,450	6,195
Jack In Box [Member]
Summary Of Refranchisings, Franchisee Development And Acquisitions [Line Items]
Restaurants acquired from franchisees	1
Property and equipment	145
Reacquired franchise rights	34
Liabilities assumed	(2)
Goodwill	1,173
Total consideration	1,350
Consolidated Entities [Member]
Summary Of Refranchisings, Franchisee Development And Acquisitions [Line Items]
Restaurants acquired from franchisees	7
Property and equipment	1,138
Reacquired franchise rights	96
Liabilities assumed	(95)
Goodwill	6,661
Total consideration	$ 7,800