Before tax and reclassification adjustments amount of unrealized holding gain (loss) and transfers on available-for-sale securities.

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

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

-Number 115

-Paragraph 13

-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

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

-Publisher FASB

-Name Accounting Standards Codification

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-Section 45

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-Name Accounting Research Bulletin (ARB)

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Reference 5: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

Reference 6: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Statement of Financial Accounting Standard (FAS)

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-LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy.

+ Details

Marketable Securities - Narrative (Details) (USD $)	3 Months Ended		9 Months Ended
Marketable Securities - Narrative (Details) (USD $)	Sep. 29, 2013	Sep. 23, 2012	Sep. 29, 2013	Sep. 23, 2012
Investment [Line Items]
Unrealized gain/(loss) on available-for-sale security	$ 1,022,000	$ (2,338,000)	$ 908,000	$ 1,251,000
Marketable debt securities [Member] \| Minimum [Member]
Investment [Line Items]
Term of securities	1 month
Marketable debt securities [Member] \| Maximum [Member]
Investment [Line Items]
Term of securities	36 months
Brightcove, Inc. [Member] \| Available-for-sale Securities [Member]
Investment [Line Items]
Unrealized gain/(loss) on available-for-sale security	1,000,000
Unrealized loss on available-for-sale security, net of tax	$ 600,000