Acquisitions and Divestivures	6 Months Ended
Jun. 30, 2016
Acquisitions and Divestitures [Abstract]
Acquisitions and Divestitures	Acquisitions and Divestitures Acquisitions Undeveloped Eagle Ford Acreage In August 2014, we acquired undeveloped acreage in the Eagle Ford in Lavaca County, Texas for a purchase price of $45.6 million, of which $34.9 million was paid at closing and the balance of $10.7 million was to be paid over three years as a drilling carry. We recorded $2.0 million under the drilling carry commitment in June 2016 as a component of exploration expense; however, the corresponding obligation has been included in “Liabilities subject to compromise” on our Consolidated Balance Sheet as of June 30, 2016. Divestitures South Texas Oil Gathering System Construction Rights and Natural Gas Gathering and Gas Lift Assets In July 2014, we sold the rights to construct a crude oil gathering and intermediate transportation system in South Texas to Republic Midstream and in January 2014, we sold our South Texas natural gas gathering and gas lift assets to American Midstream Partners, LP (“AMID”). Concurrent with these sales, we entered into long-term agreements with Republic Midstream and AMID to provide us crude oil gathering and intermediate transportation services and natural gas gathering, compression and gas lift services, respectively, for a substantial portion of our future South Texas production. We realized significant gains and recognized a substantial portion thereof upon the closing of these transactions in 2014. With respect to the Republic Midstream transaction, $75.7 million of the total gain was deferred and is being recognized over a twenty-five year period which began in March 2016. We amortized $0.9 million of the deferred gain during the six months ended June 30, 2016. As of June 30, 2016, $3.0 million of the remaining deferred gain is included as a component of “Accounts payable and accrued liabilities” and $71.8 million, representing the remaining noncurrent portion, is included as a component of “Other liabilities” on our Condensed Consolidated Balance Sheets. With respect to the AMID transaction, $10.6 million of the total gain was deferred and is being recognized over a twenty-five year period which began in January 2014. We amortized $0.2 million of the deferred gain during each of the six months ended June 30, 2016 and 2015. As of June 30, 2016, $0.4 million of the remaining deferred gain was included as a component of “Accounts payable and accrued liabilities” and $9.1 million, representing the noncurrent portion, was included as a component of “Other liabilities” on our Condensed Consolidated Balance Sheets.

Acquisitions and Divestitures

Acquisitions

Undeveloped Eagle Ford Acreage

In August 2014, we acquired undeveloped acreage in the Eagle Ford in Lavaca County, Texas for a purchase price of $45.6 million, of which $34.9 million was paid at closing and the balance of $10.7 million was to be paid over three years as a drilling carry. We recorded $2.0 million under the drilling carry commitment in June 2016 as a component of exploration expense; however, the corresponding obligation has been included in “Liabilities subject to compromise” on our Consolidated Balance Sheet as of June 30, 2016.

Divestitures

South Texas Oil Gathering System Construction Rights and Natural Gas Gathering and Gas Lift Assets

In July 2014, we sold the rights to construct a crude oil gathering and intermediate transportation system in South Texas to Republic Midstream and in January 2014, we sold our South Texas natural gas gathering and gas lift assets to American Midstream Partners, LP (“AMID”). Concurrent with these sales, we entered into long-term agreements with Republic Midstream and AMID to provide us crude oil gathering and intermediate transportation services and natural gas gathering, compression and gas lift services, respectively, for a substantial portion of our future South Texas production. We realized significant gains and recognized a substantial portion thereof upon the closing of these transactions in 2014. With respect to the Republic Midstream transaction, $75.7 million of the total gain was deferred and is being recognized over a twenty-five year period which began in March 2016. We amortized $0.9 million of the deferred gain during the six months ended June 30, 2016. As of June 30, 2016, $3.0 million of the remaining deferred gain is included as a component of “Accounts payable and accrued liabilities” and $71.8 million, representing the remaining noncurrent portion, is included as a component of “Other liabilities” on our Condensed Consolidated Balance Sheets. With respect to the AMID transaction, $10.6 million of the total gain was deferred and is being recognized over a twenty-five year period which began in January 2014. We amortized $0.2 million of the deferred gain during each of the six months ended June 30, 2016 and 2015. As of June 30, 2016, $0.4 million of the remaining deferred gain was included as a component of “Accounts payable and accrued liabilities” and $9.1 million, representing the noncurrent portion, was included as a component of “Other liabilities” on our Condensed Consolidated Balance Sheets.