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Quarterly Financial Data - Unaudited - Schedule of Quarterly Financial Data - Unaudited (Parenthetical) (Detail) (USD $) | 3 Months Ended | 12 Months Ended
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Sep. 27, 2014 | Jun. 28, 2014 | Sep. 28, 2013 | Sep. 27, 2014 | Sep. 28, 2013 | Sep. 29, 2012
Quarterly Financial Information Disclosure [Abstract] |  |  |  |  |  |
Gain on sale of manufacturing plant assets | $ 2,900,000 | $ 2,000,000 |  |  |  |
Goodwill impairment |  |  | 7,709,000 | 0 | 7,709,000 | 0
Charge related to new products |  |  | $ 11,200,000 | $ 16,900,000 | $ 11,200,000 |

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- Definition Amount of gain (loss) on sale or disposal of property, plant and equipment assets, including oil and gas property and timber property. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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