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Transactions Related to the Partnership (Details) hp in Thousands, $ in Thousands | 1 Months Ended | 3 Months Ended | 9 Months Ended
--- | --- | --- | ---
May. 31, 2015 USD ($) | Apr. 30, 2015 USD ($) compressor_unit customer hp shares | Apr. 30, 2014 USD ($) shares | Sep. 30, 2015 USD ($) | Sep. 30, 2014 USD ($) | Sep. 30, 2015 USD ($) shares | Sep. 30, 2014 USD ($)
Transactions related to the partnership |  |  |  |  |  |  |
Net proceeds from the sale of Partnership units |  |  |  |  |  | $ 1,164 | $ 169,471
Proceeds from issuance of general partner units |  |  |  |  |  |  | 0
Schedule of changes in net income and ownership interest |  |  |  |  |  |  |
Net income attributable to Exterran stockholders |  |  |  | $ (6,304) | $ 34,050 | 24,449 | 79,023
Increase in Exterran stockholders’ additional paid-in capital for change in ownership of Partnership units |  |  |  |  |  | 18,386 | 74,521
Change from net income attributable to Exterran stockholders and transfers to/from the noncontrolling interest |  |  |  |  |  | $ 42,835 | $ 153,544
Subsidiary | Exterran Partners, L.P. |  |  |  |  |  |  |
Transactions related to the partnership |  |  |  |  |  |  |
Number of partnership customers with service agreements | customer |  | 60 |  |  |  |  |
Number of compressor units used to provide compression services | compressor_unit |  | 238 |  |  |  |  |
Horsepower of compressor units used to provide compression services | hp |  | 148 |  |  |  |  |
Percentage of available horsepower of combined U.S. contract operations business from service agreements sold to the partnership |  | 3.00% |  |  |  |  |
Number of compressor units sold | compressor_unit |  | 179 |  |  |  |  |
Horsepower of compressor units sold | hp |  | 66 |  |  |  |  |
Consideration received for sale of assets |  | $ 102,300 |  |  |  |  |
Limited Partner Units | ATM Agreement | Exterran Partners, L.P. |  |  |  |  |  |  |
Transactions related to the partnership |  |  |  |  |  |  |
Maximum aggregate offering price | $ 100,000 |  |  |  |  |  |
Sale of common units (in units) | shares |  |  |  |  |  | 49,774 |
Net proceeds from the sale of Partnership units |  |  |  |  |  | $ 1,200 |
Common units | Exterran Partners, L.P. |  |  |  |  |  |  |
Transactions related to the partnership |  |  |  |  |  |  |
Sale of common units (in units) | shares |  |  | 6,210,000 |  |  |  |
Net proceeds from the sale of Partnership units |  |  | $ 169,500 |  |  |  |
Units issued (in units) | shares |  | 4,000,000 |  |  |  |  |
Common units | Exterran Partners, L.P. | Over-Allotment Option |  |  |  |  |  |  |
Transactions related to the partnership |  |  |  |  |  |  |
Sale of common units (in units) | shares |  |  | 810,000 |  |  |  |
General partner units | Exterran Partners, L.P. |  |  |  |  |  |  |
Transactions related to the partnership |  |  |  |  |  |  |
Units issued (in units) | shares |  | 80,000 |  |  |  |  |
Proceeds from issuance of general partner units |  |  | $ 3,600 |  |  |  |
General partner units issued and sold (in units) | shares |  |  | 126,000 |  |  |  |
Approximate general partner interest in limited partnership (as a percent) |  |  | 2.00% |  |  |  |

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