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Acquisitions - Intangible Assets Acquired (Details) (RFPD and NuHorizons Combined [Member], USD $) In Thousands, unless otherwise specified | 6 Months Ended
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Jul. 02, 2011
Intangible Assets Acquired As Part Of Business Combination [Line Items] |  |
Business Acquisition, Purchase Price Allocation, Amortizable Intangible Assets | $ 90,900 |
Customer Relationships [Member] |  |
Intangible Assets Acquired As Part Of Business Combination [Line Items] |  |
Business Acquisition, Purchase Price Allocation, Amortizable Intangible Assets | 35,400 |
Acquired Finite-lived Intangible Asset, Weighted Average Useful Life | 8 |
Trade Names [Member] |  |
Intangible Assets Acquired As Part Of Business Combination [Line Items] |  |
Business Acquisition, Purchase Price Allocation, Amortizable Intangible Assets | 49,000 |
Other Intangibles [Member] |  |
Intangible Assets Acquired As Part Of Business Combination [Line Items] |  |
Business Acquisition, Purchase Price Allocation, Amortizable Intangible Assets | $ 6,500 | [1]
Acquired Finite-lived Intangible Asset, Useful Life, Minimum | 1 |
Acquired Finite-lived Intangible Asset, Useful Life, Maximum | 3 |
[1] | Consists of non-competition agreements and sales backlog with useful lives ranging from 1 to 3 years.

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- Definition Intangible Assets Acquired As Part Of Business Combination [Line Items]. + Details
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- Definition The calculated weighted-average amortization period of a major class of finite-lived intangible assets acquired during the current period either individually or as part of a group of assets (in either an asset acquisition or business combination). A major class is composed of intangible assets that can be grouped together because they are similar, either by their nature or by their use in the operations of a company. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 142 -Paragraph 44 -Subparagraph a(3) -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009.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 -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6905858&loc=d3e16265-109275 + Details
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- Definition The amount of acquisition cost of a business combination allocated to an identifiable intangible asset that will be amortized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 51 -Subparagraph e -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 Statement of Financial Accounting Standard (FAS) -Number 141 -Paragraph 52 -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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