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Summary of Significant Accounting Policies - Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified | 12 Months Ended
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Dec. 29, 2012 | Dec. 31, 2011
Finite-Lived Intangible Assets [Line Items] |  |
Gross Carrying amount | $ 103,390 | $ 95,743
Accumulated Amortization | (59,037) | (41,846)
Customer Lists [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Estimated Weighted Avg Remaining LIfe | 3 years 3 months 18 days | 3 years 1 month 6 days
Gross Carrying amount | 76,763 | 67,904
Accumulated Amortization | (40,349) | (28,435)
Backlog [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Estimated Weighted Avg Remaining LIfe | 1 year | 2 years
Gross Carrying amount | 8,751 | 9,733
Accumulated Amortization | (6,713) | (4,378)
Developed Technology Rights [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Estimated Weighted Avg Remaining LIfe | 3 years 3 months 18 days | 1 year 8 months 12 days
Gross Carrying amount | 17,876 | 18,106
Accumulated Amortization | (11,975) | (9,033)
Tradenames And Trademarks [Member] |  |
Finite-Lived Intangible Assets [Line Items] |  |
Gross carrying amount | $ 188,988 | $ 180,829

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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(1) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph a(1) -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 Carrying amount of assets (excluding financial assets) that lack physical substance, excluding goodwill, having a projected indefinite period of benefit. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=7658586&loc=d3e16323-109275 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 45 -Subparagraph b -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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