Annual report pursuant to Section 13 and 15(d)

Concentration of Credit Risk and Significant Customers and Suppliers - Additional Information (Detail)

v3.3.1.900
Concentration of Credit Risk and Significant Customers and Suppliers - Additional Information (Detail) - Customer
12 Months Ended
Sep. 26, 2015
Sep. 27, 2014
Sep. 28, 2013
Concentration Risk [Line Items]      
Percentage of net sales 40.00% 41.00% 43.00%
Number of major customers 5    
Percentage of accounts receivable 35.00% 37.00%  
Percentage of accounts receivable including Company's largest customer 12.00% 11.00%  
Percentage of cost of goods sold 11.00% 10.00% 11.00%
Number of major suppliers 5    
Customer One [Member] | Sales Revenue, Net [Member] | Customer Concentration Risk [Member]      
Concentration Risk [Line Items]      
Percentage of largest customer accounted of the Company's net sales 16.00% 17.00% 16.00%
Customer Two [Member] | Sales Revenue, Net [Member] | Customer Concentration Risk [Member]      
Concentration Risk [Line Items]      
Percentage of largest customer accounted of the Company's net sales 8.00% 7.00% 8.00%
Customer Three [Member] | Sales Revenue, Net [Member] | Customer Concentration Risk [Member]      
Concentration Risk [Line Items]      
Percentage of largest customer accounted of the Company's net sales 7.00% 8.00% 8.00%