|**Commitments and Contingencies Commitments and Contigencies (Tables)** | 9 Months Ended                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                              
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|**Commitments and Contingencies Disclosure [Abstract]**                 |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|Supply Commitment                                                       | The following table presents gross volume information, including our proportionate share of PDCM, related to our long-term firm transportation, sales and processing agreements for pipeline capacity:For the Twelve Months Ending September 30,Area20142015201620172018 andThroughExpirationTotalExpirationDateVolume (MMcf)West Virginia21,42822,86824,87424,862149,603243,635January 31, 2026Utica Shale2,2822,7382,7382,73815,96626,462July 22, 2023Total23,71025,60627,61227,600165,569270,097Dollar commitment (in thousands)$9,601$10,056$10,462$10,294$47,785$88,198
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|Area                                                                    |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
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|Volume (MMcf)                                                           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|West Virginia                                                           |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|Utica Shale                                                             |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
|Total                                                                   |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             
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|Dollar commitment (in thousands)                                        |                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                             

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