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PROPERTIES AND EQUIPMENT, NET (Details 3) (USD $) | 3 Months Ended | 9 Months Ended | 1 Months Ended |
--- | --- | --- | --- | ---
Sep. 30, 2013 | Sep. 30, 2012 | Sep. 30, 2013 | Sep. 30, 2012 | Jun. 30, 2012 Pearsall shale | Oct. 31, 2013 Oklahoma and Texas panhandles oil and gas properties Subsequent event | Oct. 31, 2013 West Texas oil and gas properties Subsequent event
Significant Acquisitions and Disposals |  |  |  |  |  |  |
Non-operated working interest (as a percent) |  |  |  |  | 35.00% |  |
Total consideration received from the sale of properties |  |  |  |  | $ 251,000,000 | $ 160,000,000 | $ 28,000,000
Proceeds from sale of oil and gas properties |  |  |  |  | 125,000,000 |  |
Gain on sale of assets | 4,421,000 | (126,000) | 4,601,000 | 67,042,000 | 67,000,000 |  |
Percentage of fund for the Company's share of future drilling and completion costs |  |  |  |  | 85.00% |  |
Future drilling and completion costs to be funded by third party |  |  |  |  | $ 126,000,000 |  |
Drilling and completion carry |  |  |  |  | 2 years |  |

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