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Segment Information (Details 1) (USD $) In Thousands, unless otherwise specified | 3 Months Ended | 12 Months Ended
--- | --- | ---
Dec. 31, 2013 | Sep. 30, 2013 | Jun. 30, 2013 | Mar. 31, 2013 | Dec. 31, 2012 | Sep. 30, 2012 | Jun. 30, 2012 | Mar. 31, 2012 | Dec. 31, 2013 | Dec. 31, 2012 | Dec. 31, 2011
Long-lived Assets | $ 52,071 |  |  |  | $ 52,914 |  |  |  | $ 52,071 | $ 52,914 |
Goodwill and Intangible Assets | 800,595 |  |  |  | 783,314 |  |  |  | 800,595 | 783,314 |
Revenue | 307,076 | 288,670 | 287,499 | 265,636 | 292,640 | 265,410 | 271,425 | 233,790 | 1,148,881 | 1,063,265 | 934,288
United States [Member] |  |  |  |  |  |  |  |  |  |  |
Long-lived Assets | 44,360 |  |  |  | 45,068 |  |  |  | 44,360 | 45,068 |
Goodwill and Intangible Assets | 720,373 |  |  |  | 698,083 |  |  |  | 720,373 | 698,083 |
Revenue |  |  |  |  |  |  |  |  | 944,954 | 862,611 | 751,875
Canada [Member] |  |  |  |  |  |  |  |  |  |  |
Long-lived Assets | 5,424 |  |  |  | 6,145 |  |  |  | 5,424 | 6,145 |
Goodwill and Intangible Assets | 80,222 |  |  |  | 85,231 |  |  |  | 80,222 | 85,231 |
Revenue |  |  |  |  |  |  |  |  | 135,630 | 148,063 | 149,670
Other Geographical Location [Member] |  |  |  |  |  |  |  |  |  |  |
Long-lived Assets | 2,287 |  |  |  | 1,701 |  |  |  | 2,287 | 1,701 |
Goodwill and Intangible Assets | 0 |  |  |  | 0 |  |  |  | 0 | 0 |
Revenue |  |  |  |  |  |  |  |  | $ 68,297 | $ 52,591 | $ 32,743

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- Definition Amount of assets, excluding financial assets and goodwill, lacking physical substance and 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=26713463&loc=d3e16323-109275 + Details
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- Definition Carrying amount of finite-lived intangible assets, indefinite-lived intangible assets and goodwill. Goodwill is an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. Intangible assets are assets, not including financial assets, lacking physical substance. + References No definition available. + Details
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- Definition Aggregate revenue during the period from services rendered in the normal course of business, after deducting allowances and discounts. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1(d)) -URI http://asc.fasb.org/extlink&oid=26872669&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 1 -Article 5 + Details
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