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Significant Accounting Policies (Details) (USD $) In Millions, unless otherwise specified | 12 Months Ended
--- | ---
Dec. 29, 2012 | Dec. 31, 2011 | Jan. 01, 2011
Basis of Presentation and Principles of Consolidation |  |  |
Length of fiscal year | 364 days | 364 days | 364 days
Advertising |  |  |
Advertising expenses | $ 1.7 | $ 1.6 | $ 1.4
Buildings |  |  |
Property and Equipment |  |  |
Useful life | 40 years |  |
Leasehold interest in ground leases |  |  |
Property and Equipment |  |  |
Useful life | 86 years |  |
Minimum |  |  |
Basis of Presentation and Principles of Consolidation |  |  |
Length of fiscal year | 364 days | 364 days | 364 days
Long-Lived Assets |  |  |
Useful live of purchased intangible assets | 2 years |  |
Property and Equipment |  |  |
Useful life | 3 years |  |
Maximum |  |  |
Basis of Presentation and Principles of Consolidation |  |  |
Length of fiscal year | 371 days | 371 days | 371 days
Long-Lived Assets |  |  |
Useful live of purchased intangible assets | 12 years |  |
Property and Equipment |  |  |
Useful life | 5 years |  |

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- Definition Amount charged to advertising expense for the period, which are expenses incurred with the objective of increasing revenue for a specified brand, product or product line. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 720 -SubTopic 35 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6420018&loc=d3e36677-107848 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher AICPA -Name Statement of Position (SOP) -Number 93-7 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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
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- Definition Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References No definition available. + Details
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