Summary Of Refranchisings, Franchisee Development And Acquisitions (Purchase Price Allocations On Franchise Acquisitions) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Sep. 30, 2012 restaurant	Oct. 02, 2011 restaurant		Oct. 03, 2010 restaurant
Summary Of Refranchisings, Franchisee Development And Acquisitions [Abstract]
Restaurants acquired from franchisees (restaurants)	46	32		16
Property and equipment	$ 12,379	$ 6,934		$ 6,756
Reacquired franchise rights	604	386		301
Goodwill	36,084	24,300		1,058
Liabilities assumed	(122)	(117)		0
Gains on the acquisition of franchise-operated restaurants	0	(426)	[1]	0
Total consideration	$ 48,945	$ 31,077		$ 8,115

[1] In 2011, the assets acquired and liabilities assumed exceeded the consideration for two units acquired. The gains are included in selling, general and administrative expenses in the accompanying consolidated statements of earnings.