Related Party Transactions and Certain Other Transactions - Additional Information (Detail) (USD $)	3 Months Ended	9 Months Ended
Jun. 26, 2010	Jun. 25, 2011	Jun. 26, 2010
Related Party Transaction [Line Items]
Reimbursement of expenses	$ 12,000	$ 15,000	$ 155,000

Cost associated with reimbursable income. This occurs when a services entity incurs expenses on behalf of the client and passes through the cost of reimbursable expenses to a client.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.2)
-URI http://asc.fasb.org/extlink&oid=6880815&loc=d3e20235-122688

Name:	us-gaap_CostOfReimbursableExpense
Namespace Prefix:	us-gaap
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration