Annual report pursuant to Section 13 and 15(d)

Organization and Significant Accounting Policies - Additional Information 1 (Detail)

v3.3.1.900
Organization and Significant Accounting Policies - Additional Information 1 (Detail)
12 Months Ended
Sep. 26, 2015
USD ($)
Companies
Sep. 27, 2014
USD ($)
Sep. 28, 2013
USD ($)
New Accounting Pronouncement, Early Adoption [Line Items]      
Owned percentage in unconsolidated entities 50.00%    
Number of unconsolidated companies | Companies 4    
Equity income $ 400,000 $ 600,000 $ 900,000
Investment in unconsolidated companies 16,500,000 600,000  
Excess loss insurance that covers any health care claims 700,000    
Outstanding derivative instruments 0 0  
Stock-based compensation 8,315,000 7,678,000 15,892,000
Stock-based compensation after tax 5,300,000 $ 4,900,000 $ 10,000,000
Deferred financing costs, net 3,400,000    
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