Goodwill - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
Sep. 28, 2013
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill impairment charge	$ 7.7

Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://www.xbrl.org/2003/role/presentationRef

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-Name Accounting Standards Codification

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