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Summarizes Cost And Estimated Fair Value Of Short Term Fixed Income Securities (Detail) (USD $) In Thousands, unless otherwise specified	Sep. 27, 2013	Dec. 28, 2012
Fair Value Measurements [Line Items]
Due within one year, Amortized Cost	$ 6,069
Due between one and two years, Amortized Cost	6,357
Due between two and three years, Amortized Cost	873
Total Amortized Cost	13,299
Due within one year, Estimated FairValue	6,066
Due between one and two years, Estimated FairValue	6,357
Due between two and three years, Estimated FairValue	873
Total Estimated FairValue	$ 13,296	$ 20,881

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- Definition

Available For Sale Securities Short Term Investments Amortized Cost Due In Year One

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- Definition

Available For Sale Securities Short Term Investments Amortized Cost Due In Year Three

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- Definition

Available For Sale Securities Short Term Investments Amortized Cost Due In Year Two

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- Definition

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- Definition

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- Definition

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- Definition

This item represents the cost of debt and equity securities, which are categorized neither as held-to-maturity nor trading, net of adjustments including accretion, amortization, collection of cash, previous other-than-temporary impairments recognized in earnings (less any cumulative-effect adjustments recognized, as defined), and fair value hedge accounting adjustments, if any.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.2)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682

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Investments which are intended to be sold in the short term (usually less than one year or the normal operating cycle, whichever is longer) including trading securities, available-for-sale securities, held-to-maturity securities, and other short-term investments not otherwise listed in the existing taxonomy.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 210

-SubTopic 10

-Section S99

-Paragraph 1

-Subparagraph (SX 210.5-02.2)

-URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682



Reference 2: http://www.xbrl.org/2003/role/presentationRef

-Publisher SEC

-Name Regulation S-X (SX)

-Number 210

-Section 03

-Paragraph 1

-Subparagraph g

-Article 7

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