Major Customers and Export Sales - Additional Information (Detail)	3 Months Ended
	Dec. 29, 2012 Country Customer	Dec. 24, 2011 Country
Segment Reporting Information [Line Items]
Number of major customers	2
Number of countries in which products are sold	2	1
First Customer [Member]
Segment Reporting Information [Line Items]
Sales represented in percentage	60.00%	97.00%
Second Customer [Member]
Segment Reporting Information [Line Items]
Sales represented in percentage	30.00%
First And Second Customer [Member]
Segment Reporting Information [Line Items]
Sales represented in percentage	90.00%