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Related Party Transactions (Details) $ in Millions | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 USD ($) shares | Jun. 30, 2014 USD ($) shares | Jun. 30, 2015 USD ($) item shares | Jun. 30, 2014 USD ($) shares
Chairman and Chief Executive Officer [Member] |  |  |  |
Related Party Transaction, Due from (to) Related Party [Abstract] |  |  |  |
Number of separate lease agreements | item |  |  | 2 |
Lease effective date |  |  | Jun. 01, 2014 |
Aggregate monthly payments under non-cancelable operating lease agreements |  |  | $ 0.2 |
Percentage increase per annum in monthly lease payments under non-cancelable operating lease agreements |  |  | 3.00% |
Lease expense | $ 0.8 | $ 0.6 | $ 1.6 | $ 1.3
O&G [Member] |  |  |  |
Related Party Transaction, Due from (to) Related Party [Abstract] |  |  |  |
Ownership percentage in joint venture | 30.00% |  | 30.00% |
Estimated total contract value | $ 362.0 |  | $ 362.0 |
Expenses for equipment and services | $ 3.2 | $ 1.9 | $ 5.2 | $ 3.4
Number of Company's shares of common stock held by related party joint venture partner (in shares) | shares | 500,000 | 500,000 | 500,000 | 500,000
Percentage of common stock held by related party | 1.02% | 1.03% | 1.02% | 1.03%

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- Definition Number of Company's shares of common stock held by a related party joint venture partner. + References No definition available. + Details
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- Definition Represents the number of separate lease agreements entered into with related party. + References No definition available. + Details
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- Definition Amount of rent expense incurred for leased assets, including but not limited to, furniture and equipment, that is not directly or indirectly associated with the manufacture, sale or creation of a product or product line. + References No definition available. + Details
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- References No definition available. + Details
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- Definition Expenses recognized resulting from transactions (excluding transactions that are eliminated in consolidated or combined financial statements) with related party. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 850 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=6457730&loc=d3e39549-107864 + Details
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- Details
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- Details
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