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Divestitures | 9 Months Ended
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Sep. 30, 2015
Discontinued Operations and Disposal Groups [Abstract] |
Divestitures | Divestitures Sale of Gulf of Mexico and Gulf Coast Properties On February 25, 2014, the Company sold subsidiaries that owned the Company’s Gulf of Mexico and Gulf Coast oil and natural gas properties (the “Gulf Properties”) to Fieldwood Energy, LLC (“Fieldwood”) for approximately $702.6 million, net of working capital adjustments and post-closing adjustments, and Fieldwood’s assumption of approximately $366.0 million of related asset retirement obligations. This transaction did not result in a significant alteration of the relationship between the Company’s capitalized costs and proved reserves and, accordingly, the Company recorded the proceeds as a reduction of its full cost pool with no gain or loss on the sale. See Note 14 for discussion of Fieldwood’s related party affiliation with the Company. In accordance with the terms of the sale, the Company agreed to guarantee on behalf of Fieldwood certain plugging and abandonment obligations associated with the Gulf Properties for a period of up to one year from the date of closing. The Company recorded a liability equal to the fair value of this guarantee, or $9.4 million, at the time the transaction closed. As of December 31, 2014, the fair value of the guarantee was approximately $5.1 million. See Note 4 for additional discussion of the determination of the guarantee fair value. The Company did not incur any costs as a result of this guarantee and was released from the obligation during the third quarter of 2015. Additionally, Fieldwood maintained, for a period of up to one year from the closing date, restricted deposits held in escrow for plugging and abandonment obligations associated with the Gulf Properties. In the first quarter of 2015, the Company received its share of such deposits, net of any amounts payable to Fieldwood, or $12.0 million, in accordance with the terms of the sale. The following table presents revenues and expenses, including direct operating expenses, depletion, accretion of asset retirement obligations and general and administrative expenses, for the Gulf Properties included in the accompanying unaudited condensed consolidated statement of operations for the nine-month period ended September 30, 2014 (in thousands):
| Nine Months Ended September 30, 2014 (1)
Revenues | $ | 90,920 |
Expenses | $ | 63,674 |
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(1) | Includes revenues and expenses through February 25, 2014, the date of the sale.

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