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Retirement of Long-Lived Assets (Details) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) compressor | Dec. 31, 2015 USD ($) compressor
Impaired Assets to be Disposed of by Method Other than Sale [Line Items] |  |  |
Loss on retirement of rental equipment | $ 0 | $ 545 | $ 4,370
Rental Compressor Unit |  |  |
Impaired Assets to be Disposed of by Method Other than Sale [Line Items] |  |  |
Estimated fair value of long-lived assets |  | $ 242 | $ 967
Rental Compressor Unit |  |  |
Impaired Assets to be Disposed of by Method Other than Sale [Line Items] |  |  |
Number of rental compressors that are not of demanded type, configuration, make or model | compressor |  | 63 | 258
Rental Compressor Unit | Loss on Retirement of Rental Equipment |  |  |
Impaired Assets to be Disposed of by Method Other than Sale [Line Items] |  |  |
Loss on retirement of rental equipment |  | $ 545 | $ 4,400

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- Definition Loss recognized as a result of the initial and subsequent write-down of a long-lived asset's carrying amount to fair value. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=64862545&loc=d3e2921-110230 + Details
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- Definition Fair value portion of physical assets used in the normal conduct of business to produce goods and services and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19190-110258 + Details
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