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The Company and Basis of Presentation (Details) | 3 Months Ended
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Dec. 29, 2017 | Sep. 29, 2017 | Dec. 30, 2016 | Sep. 30, 2016
Organization, Consolidation and Presentation of Financial Statements [Abstract] |  |  |  |
Fiscal period duration | 91 days | 91 days | 91 days | 91 days

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- Definition Duration of a fiscal period, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Includes, but not limited to, weeks in a year or quarter. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:durationItemType
Balance Type: | na
Period Type: | duration

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- References No definition available. + Details
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Balance Type: | na
Period Type: | duration