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Summary of Significant Accounting Policies - Intangible Assets (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 30, 2017 | Dec. 31, 2016 | Jan. 02, 2016
Finite-Lived Intangible Assets [Line Items] |  |  |
Indefinite-Lived Intangible Assets, Fair Value | $ 93,000 |  |
Indefinite-Lived Intangible Assets, Carrying Value | 151,000 |  |
Effective Income Tax Rate Reconciliation, Share-based Compensation, Excess Tax Benefit, Amount | 8,100 |  |
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) | 58,000 | $ 0 | $ 0
Gross Carrying amount | 372,670 | 289,449 |
Finite-Lived Intangible Assets, Accumulated Amortization | $ (207,334) | $ (168,369) |
Customer Lists [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Estimated Weighted Avg Remaining LIfe | 5 years 2 months | 5 years 6 months |
Gross Carrying amount | $ 330,496 | $ 251,025 |
Finite-Lived Intangible Assets, Accumulated Amortization | $ (171,005) | $ (136,895) |
Backlog [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Estimated Weighted Avg Remaining LIfe | 9 months | 0 months |
Gross Carrying amount | $ 19,689 | $ 13,550 |
Finite-Lived Intangible Assets, Accumulated Amortization | $ (18,081) | $ (13,550) |
Developed Technology Rights [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Estimated Weighted Avg Remaining LIfe | 4 years 2 months | 4 years 9 months |
Gross Carrying amount | $ 22,485 | $ 24,874 |
Finite-Lived Intangible Assets, Accumulated Amortization | (18,248) | (17,924) |
Tradenames And Trademarks [Member] |  |  |
Finite-Lived Intangible Assets [Line Items] |  |  |
Gross carrying amount | $ 615,090 | $ 575,091 |

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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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- 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=66006027&loc=d3e16323-109275 + Details
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