Acquisitions and divestitures	6 Months Ended
Jun. 30, 2014
Acquisitions and divestitures [Abstract]
Acquisitions and divestitures	Acquisitions and divestitures During the second quarter of 2014, we closed on the sales of two of the five property packages that comprise our plan to divest our assets in Ark-La-Tex, Permian Basin, Gulf Coast, and North Texas. The five packages include: (i) our Fort Worth Basin package located in North Texas; (ii) our Delaware Basin package; (iii) our Central Basin Platform package; (iv) our Ark-La-Tex package; and (v) our Gulf Coast package. In May 2014, we sold our Fort Worth Basin package to Scout Energy Group I, LP, for cash proceeds of $25,150 and we sold our Delaware Basin package to RKI Exploration & Production, LLC for cash proceeds of $125,000. During the third quarter of 2014, we closed on the sales of two additional property packages. Our Ark-La-Tex and Central Basin Platform property packages, both of which were sold to RAM Energy, LLC (“RAM”), closed in July 2014 for cash proceeds of $48,495 and $45,854, respectively. The cash proceeds from the four sales above are subject to post-closing adjustments. As these properties did not represent a material portion of our oil and natural gas reserves, individually or in the aggregate, we did not record any gain or loss on the sales and instead, reduced our full cost pool by the amount of the net proceeds without significant alteration to our depletion rate. In addition to the packages discussed above, we had various other divestitures during the six months ended June 30, 2014, for cash proceeds of $20,022. These divestitures included properties predominantly located in Andrews County, Texas, which comprised part of our Permian Basin properties, and Osage County, Oklahoma. In December 2013, we acquired certain oil and natural gas properties in the Panhandle Marmaton play from Cabot Oil & Gas Corporation (the “Cabot Acquisition”). The acquisition qualified as a business combination for accounting purposes and, as such, we estimated the fair value of the acquired properties as of the acquisition date and allocated the purchase price to the assets and liabilities acquired based on their fair values. During the second quarter of 2014, we finalized the post-closing adjustments related to the Cabot Acquisition with no material changes to the purchase price allocation.

Acquisitions and divestitures

During the second quarter of 2014, we closed on the sales of two of the five property packages that comprise our plan to divest our assets in Ark-La-Tex, Permian Basin, Gulf Coast, and North Texas. The five packages include: (i) our Fort Worth Basin package located in North Texas; (ii) our Delaware Basin package; (iii) our Central Basin Platform package; (iv) our Ark-La-Tex package; and (v) our Gulf Coast package. In May 2014, we sold our Fort Worth Basin package to Scout Energy Group I, LP, for cash proceeds of $25,150 and we sold our Delaware Basin package to RKI Exploration & Production, LLC for cash proceeds of $125,000.

During the third quarter of 2014, we closed on the sales of two additional property packages. Our Ark-La-Tex and Central Basin Platform property packages, both of which were sold to RAM Energy, LLC (“RAM”), closed in July 2014 for cash proceeds of $48,495 and $45,854, respectively. The cash proceeds from the four sales above are subject to post-closing adjustments. As these properties did not represent a material portion of our oil and natural gas reserves, individually or in the aggregate, we did not record any gain or loss on the sales and instead, reduced our full cost pool by the amount of the net proceeds without significant alteration to our depletion rate.

In addition to the packages discussed above, we had various other divestitures during the six months ended June 30, 2014, for cash proceeds of $20,022. These divestitures included properties predominantly located in Andrews County, Texas, which comprised part of our Permian Basin properties, and Osage County, Oklahoma.

In December 2013, we acquired certain oil and natural gas properties in the Panhandle Marmaton play from Cabot Oil & Gas Corporation (the “Cabot Acquisition”). The acquisition qualified as a business combination for accounting purposes and, as such, we estimated the fair value of the acquired properties as of the acquisition date and allocated the purchase price to the assets and liabilities acquired based on their fair values. During the second quarter of 2014, we finalized the post-closing adjustments related to the Cabot Acquisition with no material changes to the purchase price allocation.