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Long-Lived Asset Impairment (Details)
hp in Thousands, $ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2017
USD ($)
compressor_unit
hp
Jun. 30, 2016
USD ($)
compressor_unit
hp
Jun. 30, 2017
USD ($)
compressor_unit
hp
Jun. 30, 2016
USD ($)
compressor_unit
hp
Held-for-sale        
Impaired Long-Lived Assets Held and Used [Line Items]        
Impairment recorded on idle compressor units retired from the active fleet (in thousands) $ 0 $ 3,075 $ 0 $ 3,075
Idle compressor units        
Impaired Long-Lived Assets Held and Used [Line Items]        
Idle compressor units retired from the active fleet (compressors) | compressor_unit 60 130 140 210
Horsepower of idle compressor units retired from the active fleet (horsepower) | hp 23 39 51 72
Impairment recorded on idle compressor units retired from the active fleet (in thousands) $ 5,508 $ 10,733 $ 13,753 $ 20,593