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Summary of Significant Accounting Policies - Additional Information (Detail) (USD $) In Thousands, except Share data in Millions, unless otherwise specified	Dec. 28, 2012	Dec. 30, 2011	May 23, 2006
Summary Of Significant Accounting Policies [Line Items]
Deferred revenues	$ 6,665	$ 5,948
Limits on use of authorized common stock shares			40
Limits on use of authorized preferred stock shares			2

The carrying amount of consideration received or receivable as of the balance sheet date on potential earnings that were not recognized as revenue in conformity with GAAP, and which are expected to be recognized as such within one year or the normal operating cycle, if longer, including sales, license fees, and royalties, but excluding interest income.

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