Concentration of Credit Risk and Significant Customers and Suppliers - Additional Information (Detail)	12 Months Ended
	Sep. 28, 2013 Customer	Sep. 29, 2012	Sep. 24, 2011
Concentration Of Credit Risk [Line Items]
Percentage of net sales	43.00%	45.00%	45.00%
Number of major customers	5
Percentage of accounts receivable	35.00%	42.00%
Percentage of accounts receivable including Company's largest customer	9.00%	15.00%
Percentage of cost of goods sold	11.00%	9.00%	12.00%
Number of major suppliers	5
Customer One [Member]
Concentration Of Credit Risk [Line Items]
Percentage of largest customer accounted of the Company's net sales	16.00%	17.00%	16.00%
Customer Two [Member]
Concentration Of Credit Risk [Line Items]
Percentage of largest customer accounted of the Company's net sales	8.00%	7.00%	7.00%
Customer Three [Member]
Concentration Of Credit Risk [Line Items]
Percentage of largest customer accounted of the Company's net sales	8.00%	9.00%	12.00%