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Long Lived Asset Impairment (Details Textual) (USD $)
 1 Months Ended 3 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended
Nov. 30, 2009
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2011
Dec. 31, 2010
Dec. 31, 2009
Dec. 31, 2011
Idle Compression Assets to Be Retired and Sold [Member]
Dec. 31, 2010
Idle Compression Assets to Be Retired and Sold [Member]
hp
Dec. 31, 2009
Idle Compression Assets to Be Retired and Sold [Member]
hp
Dec. 31, 2010
Idle Compression Assets [Member]
CompressorUnits
hp
Dec. 31, 2009
Idle Compression Assets [Member]
Unit
Dec. 31, 2010
Damaged Compression Assets [Member]
Unit
Dec. 31, 2010
Compression Assets to Be Retired and Sold [Member]
Unit
Dec. 31, 2009
Compression Assets to Be Retired and Sold [Member]
Mar. 31, 2009
Facilities Assets [Member]
Dec. 31, 2008
Cawthorne Channel Project [Member]
Property, Plant and Equipment [Line Items]                                
Number of units retired from the fleet                   1,800 1,232   323      
Horsepower retired from the contract operations business               61,400 264,900 600,000            
Number of fleet units that were previously utilized                       105        
Long-lived asset impairment     $ 142,200,000 $ 7,012,000 $ 146,903,000 $ 96,988,000 $ 6,600,000         $ 3,300,000 $ 7,600,000 $ 91,000,000 $ 6,000,000 $ 21,600,000
Long Lived Asset Impairment (Textual) [Abstract]                                
Asset impairment to reduce the book value         136,000,000                      
Proceeds from sale of property, plant and equipment 37,000,000     46,258,000 31,195,000 69,097,000                    
Gain on sale of property, plant and equipment 20,800,000     8,543,000 7,322,000 33,156,000                    
Impairment of non-fleet long-lived assets   $ 400,000