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Goodwill and Identifiable Intangible Assets, Net (Details 2) (USD $) In Thousands, unless otherwise specified |  |  |  |  | 6 Months Ended |  |  | 6 Months Ended |  |  | 6 Months Ended |  |  | 6 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jun. 30, 2014 | Dec. 31, 2013 | Jun. 30, 2014 Customer relationships | Dec. 31, 2013 Customer relationships | Jun. 30, 2014 Customer relationships Minimum | Jun. 30, 2014 Customer relationships Maximum | Jun. 30, 2014 Backlog | Dec. 31, 2013 Backlog | Jun. 30, 2014 Backlog Minimum | Jun. 30, 2014 Backlog Maximum | Jun. 30, 2014 Noncompete agreements | Dec. 31, 2013 Noncompete agreements | Jun. 30, 2014 Noncompete agreements Minimum | Jun. 30, 2014 Noncompete agreements Maximum | Jun. 30, 2014 Tradenames | Dec. 31, 2013 Tradenames | Jun. 30, 2014 Tradenames Minimum | Jun. 30, 2014 Tradenames Maximum
Identifiable Intangible Assets, Net |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Estimated Useful Lives in Years |  |  |  |  | 1 year | 15 years |  |  | 1 year | 2 years |  |  | 2 years | 7 years |  |  | 2 years | 25 years
Gross Book Value | $ 81,310 | $ 73,504 | $ 48,725 | $ 40,404 |  |  | $ 1,600 | $ 6,515 |  |  | $ 2,890 | $ 2,890 |  |  | $ 28,095 | $ 23,695 |  |
Accumulated Amortization | $ (32,991) | $ (36,121) | $ (23,520) | $ (20,978) |  |  | $ (117) | $ (6,515) |  |  | $ (2,758) | $ (2,649) |  |  | $ (6,596) | $ (5,979) |  |

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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=26713463&loc=d3e16323-109275 + 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=26713463&loc=d3e16323-109275 + 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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