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Retirement of Long-Lived Assets (Details)
$ in Thousands
6 Months Ended 12 Months Ended
Jun. 30, 2015
USD ($)
compressor
hp
Dec. 31, 2015
USD ($)
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]        
Amount of horsepower | hp 32,259      
Loss on retirement of rental equipment   $ 4,370 $ 0 $ 0
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 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 $ 4,400      
Rental Compressor Unit        
Impaired Assets to be Disposed of by Method Other than Sale [Line Items]        
Estimated fair value of long-lived assets $ 967