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Business Acquisitions Acquired Finite Lived Intangible Assets (Details) - USD ($) $ in Thousands | Aug. 08, 2014 | Apr. 10, 2014
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August 2014 MidCon Acquisition |  |
Business Acquisitions |  |
Total acquired identifiable intangible assets | $ 48,373 |
August 2014 MidCon Acquisition | Customer related |  |
Business Acquisitions |  |
Total acquired identifiable intangible assets | $ 21,590 |
Average Useful Life | 25 years |
August 2014 MidCon Acquisition | Contract based |  |
Business Acquisitions |  |
Total acquired identifiable intangible assets | $ 26,783 |
Average Useful Life | 5 years |
April 2014 MidCon Acquisition |  |
Business Acquisitions |  |
Total acquired identifiable intangible assets |  | $ 42,474
April 2014 MidCon Acquisition | Customer related |  |
Business Acquisitions |  |
Total acquired identifiable intangible assets |  | $ 4,701
Average Useful Life |  | 25 years
April 2014 MidCon Acquisition | Contract based |  |
Business Acquisitions |  |
Total acquired identifiable intangible assets |  | $ 37,773
Average Useful Life |  | 7 years

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- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: 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=26713463&loc=d3e16265-109275 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Amount of increase in assets, excluding financial assets, lacking physical substance with a definite life, resulting from a business combination. + References No definition available. + Details
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