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Assets Held for Sale (Details) (USD $) | 3 Months Ended | 6 Months Ended |  |
--- | --- | --- | --- | ---
Jun. 30, 2014 | Jun. 30, 2014 | Jun. 30, 2013 | Jul. 29, 2014 | Dec. 31, 2013
Assets held for sale [Abstract] |  |  |  |  |
Cash Consideration to Acquire Unproved Property | $ 100,000,000 | $ 100,000,000 |  |  |
Leasehold Acres Consideration to Acquire Unproved Property | 7,000 | 7,000 |  |  |
Cash Consideration to Acquire Proved and Unproved Property |  |  |  | 345,000,000 |
Proceeds from Sale of Oil and Gas Property and Equipment | 50,200,000 | 46,821,000 | 20,343,000 |  |
Gain (Loss) on Disposition of Oil and Gas Property | 27,800,000 |  |  |  |
Assets Held-for-sale Reasonably Certain Period for Sale |  | 1 |  |  |
Oil and gas properties held for sale net of accumulated depletion, depreciation and amortization of $23,697 and $7,390, respectively | 23,935,000 | 23,935,000 |  |  | 19,072,000
Asset retirement obligation associated with oil and gas properties held for sale | $ 2,760,000 | $ 2,760,000 |  |  | $ 3,033,000

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- Definition Noncurrent portion of the carrying amount of a liability for an asset retirement obligation for an asset held for sale. An asset retirement obligation is a legal obligation associated with the disposal or retirement of a tangible long-lived asset that results from the acquisition, construction or development, or the normal operations of a long-lived asset, except for certain obligations of lessees. + References No definition available. + Details
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- Details
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- Definition Represents the period where there is reasonable certainty that the sale will take place for the assets to be classified as held for sale. + References No definition available. + Details
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- Definition Cash Consideration to Acquire Proved and Unproved Property + References No definition available. + Details
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- Definition Cash Consideration to Acquire Unproved Property + References No definition available. + Details
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- Definition Leasehold Acres Consideration to Acquire Unproved Property + References No definition available. + Details
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- Definition Long-lived assets that are held for sale apart from normal operations and anticipated to be sold in less than one year. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 205 -SubTopic 20 -Section 45 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=6892542&loc=d3e1107-107759 + Details
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- Definition Amount of gain (loss) on sale or disposal of proven and unproven oil and gas properties. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3602-108585 + Details
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- Definition The cash inflow to dispose of long-lived, physical assets and mineral interests in oil and gas properties used for normal oil and gas operations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Investing Activities -URI http://asc.fasb.org/extlink&oid=6516133 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 12 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=31042434&loc=d3e3179-108585 + Details
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