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Rental Equipment, Property and Equipment - Narrative (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 USD ($) compressor | Dec. 31, 2019 USD ($) compressor
Property, Plant and Equipment [Line Items] |  |
Depreciation | $ 25,073 | $ 23,143
Retirement of rental equipment | 291 | 1,512
Loss On Retirement of Rental Equipment |  |
Property, Plant and Equipment [Line Items] |  |
Retirement of rental equipment | 291 | 1,512
Property, Plant, and Equipment, Excluding Rental Equipment |  |
Property, Plant and Equipment [Line Items] |  |
Depreciation | $ 2,300 | $ 1,700
Rental Compressor Unit |  |
Property, Plant and Equipment [Line Items] |  |
Number of units retired | compressor | 216 | 327
Rental Equipment |  |
Property, Plant and Equipment [Line Items] |  |
Depreciation | $ 22,700 | $ 21,400
Minimum |  |
Property, Plant and Equipment [Line Items] |  |
Property and equipment, estimated useful life | 3 years |
Minimum | Rental Equipment |  |
Property, Plant and Equipment [Line Items] |  |
Property and equipment, estimated useful life | 15 years |
Maximum |  |
Property, Plant and Equipment [Line Items] |  |
Property and equipment, estimated useful life | 39 years |
Maximum | Rental Equipment |  |
Property, Plant and Equipment [Line Items] |  |
Property and equipment, estimated useful life | 25 years |

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