Fixed Assets (Narrative) (Details) (USD $)	3 Months Ended			9 Months Ended
	Jun. 25, 2011	Jun. 26, 2010	Dec. 26, 2009	Jun. 25, 2011	Jun. 26, 2010
Fixed Assets
Total depreciation expense	$ 19,200,000	$ 7,700,000		$ 50,176,000	$ 20,379,000
Capitalized interest expense	$ 700,000	$ 400,000	$ 300,000	$ 1,600,000	$ 1,100,000