Summarizes Cost And Estimated Fair Value Of Short Term Fixed Income Securities (Detail) (USD $) In Thousands, unless otherwise specified	Jan. 02, 2015	Jan. 03, 2014
Fair Value Measurements [Line Items]
Due within one year, Amortized Cost	$ 20,719
Due between one and two years, Amortized Cost	4,171
Total Amortized Cost	24,890
Due within one year, Estimated Fair Value	20,741
Due between one and two years, Estimated Fair Value	4,172
Total Estimated Fair Value	$ 24,913us-gaap_ShortTermInvestments	$ 33,171us-gaap_ShortTermInvestments

Available for sale securities short term investments amortized cost due in year one.

No definition available.

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- Definition

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

+ References

No definition available.

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- Definition

Available For Sale Securities Short Term Investments Estimated Fair Value Due In Year One

+ References

No definition available.

+ Details

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- Definition

Available For Sale Securities Short Term Investments Estimated Fair Value Due In Year Two

+ References

No definition available.

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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

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- Definition

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

+ Details

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