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Subsequent Events (Notes)	9 Months Ended
Subsequent Events (Notes)	Sep. 30, 2016
Subsequent Events [Abstract]
Subsequent Events	SUBSEQUENT EVENTS On October 1, 2015, the Company completed the sale of its wholly-owned subsidiary that owned the Loving County System to EnLink. The Loving County System includes the Processing Plant and approximately six miles of high-pressure gathering pipeline which connects the Company’s gathering system to the Processing Plant. Pursuant to the terms of the transaction, EnLink paid the Company approximately $143 million, excluding customary purchase price adjustments. In conjunction with the sale of the Loving County System, the Company dedicated its leasehold interests in Loving County as of the closing date pursuant to a 15-year, fixed-fee gathering and processing agreement and provided a volume commitment in exchange for priority one service. The Company can, at its option, dedicate any future leasehold acquisitions in Loving County to EnLink. In addition, the Company retained its natural gas gathering system up to a central delivery point and its other midstream assets in the area, including oil and water gathering systems and salt water disposal wells.