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Long-Lived Asset Impairment (Details) - Idle compressor units hp in Thousands, $ in Thousands | 3 Months Ended | 6 Months Ended
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Jun. 30, 2018 USD ($) compressor_unit hp | Jun. 30, 2017 USD ($) compressor_unit hp | Jun. 30, 2018 USD ($) compressor_unit hp | Jun. 30, 2017 USD ($) compressor_unit hp
Impaired Long-Lived Assets Held and Used |  |  |  |
Idle compressor units retired from the active fleet (compressors) | compressor_unit | 120 | 60 | 165 | 140
Horsepower of idle compressor units retired from the active fleet (horsepower) | hp | 27 | 23 | 50 | 51
Impairment recorded on idle compressor units retired from the active fleet | $ | $ 6,953 | $ 5,508 | $ 11,663 | $ 13,753

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- Definition The number of long-lived assets that the entity determined to retire and either sell or re-utilize key components. + References No definition available. + Details
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- Definition The capacity of long-lived assets that the entity determined to retire and either sell or re-utilize key components, expressed in horsepower. + References No definition available. + Details
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- Definition The aggregate amount of write-downs for impairments recognized during the period for long lived assets held for use (including those held for disposal by means other than sale). + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109223946&loc=d3e3602-108585 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=109226691&loc=d3e2921-110230 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 958 -SubTopic 220 -Section 45 -Paragraph 11 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=114873921&loc=SL114875236-224282 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 360 -SubTopic 10 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=109226348&loc=d3e2420-110228 + Details
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