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Summary of Significant Accounting Policies - Summary of Marketable Securities (Detail) (Equity Securities [Member], USD $)
In Thousands, unless otherwise specified |
Sep. 28, 2013
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Sep. 29, 2012
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Equity Securities [Member]
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| Schedule Of Marketable Securities [Line Items] | ||
| Cost | $ 5,931 | $ 5,931 |
| Gross Unrealized Gains | 12,156 | 98 |
| Gross Unrealized Losses | ||
| Fair Value | $ 18,087 | $ 6,029 |
| X | ||||||||||
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- Definition
This item represents the gross unrealized gains for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities. No definition available.
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| X | ||||||||||
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- Definition
This item represents the gross unrealized losses for securities, at a point in time, which are categorized neither as held-to-maturity nor trading securities. No definition available.
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| X | ||||||||||
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- Details
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| X | ||||||||||
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- Definition
Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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| X | ||||||||||
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- Definition
Amount of equity securities categorized neither as held-to-maturity nor as trading. Reference 1: http://www.xbrl.org/2003/role/presentationRef
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