Fair Value Measurements and Fair Value of Financial Instruments (Details 4) (Auction rate securities, Discounted cash flow, USD $) In Thousands, unless otherwise specified	12 Months Ended
Dec. 28, 2013
Quantitative information for Level 3 Fair Value Measurements Assets
Fair value Assets	$ 4,234
Weighted Average
Quantitative information for Level 3 Fair Value Measurements Assets
Discount rate (as a percent)	1.74%
Market credit spread (as a percent)	2.86%
Liquidity factor (as a percent)	0.00%

Represents the liquidity factor, used as an input to measure fair value.

No definition available.

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- Definition

Represents the market credit spread, used as an input to measure fair value.

+ References

No definition available.

+ Details

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- Definition

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (a)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

+ Details

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- Details

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- Definition

Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt.

+ References

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

-Publisher FASB

-Name Accounting Standards Codification

-Topic 820

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (bbb)

-URI http://asc.fasb.org/extlink&oid=25499696&loc=d3e19207-110258

+ Details

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