Organization and Significant Accounting Policies - Additional Information1 (Detail) (USD $)	12 Months Ended
	Sep. 28, 2013	Sep. 29, 2012	Sep. 24, 2011
New Accounting Pronouncement, Early Adoption [Line Items]
Owned Percentage in unconsolidated Entities	50.00%
Equity income	$ 900,000	$ 700,000	$ 900,000
Investment in unconsolidated companies	800,000	1,300,000
Excess loss insurance that covers any health care claims	700,000
Stock-based compensation	15,892,000	7,510,000	7,447,000
Stock-based compensation after tax	10,000,000	4,700,000	4,400,000
Maximum [Member]
New Accounting Pronouncement, Early Adoption [Line Items]
General liability and vehicle liability insurance policies	350,000
Minimum [Member]
New Accounting Pronouncement, Early Adoption [Line Items]
General liability and vehicle liability insurance policies	$ 250,000