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Related Party Transactions (Details) (USD $) | 1 Months Ended | 12 Months Ended |  |  |  | 12 Months Ended |  | 12 Months Ended
--- | --- | --- | --- | --- | --- | --- | --- | ---
Apr. 30, 2000 | Dec. 31, 2012 | Dec. 31, 2011 | Dec. 31, 2010 | Dec. 31, 2009 | Dec. 31, 2012 OKCD [Member] | Dec. 31, 2011 OKCD [Member] | Dec. 31, 2010 OKCD [Member] | Apr. 30, 2000 OKCD [Member] | Dec. 31, 2011 Weatherford [Member] | Dec. 31, 2010 Weatherford [Member]
Percentage of working interests acquired | 20.00% |  |  |  |  |  |  |  |  |  |
Financing exploratory costs |  | $ 8,247,000 | $ 5,840,000 | $ 3,252,000 | $ 3,059,000 |  |  |  | $ 20,000,000 |  |
Royalty interest | 25.00% |  |  |  |  |  |  |  |  |  |
Partnership interests |  | 81.00% |  |  |  |  |  |  |  |  |
Related party payment |  |  |  |  |  | $ 6,900,000 | $ 8,300,000 | $ 11,200,000 |  | $ 3,600,000 | $ 6,900,000

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- Definition The amount of capitalized exploratory well costs that is pending the determination of proved reserves. This does not include amounts that were capitalized and subsequently expensed in the same annual period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 1B -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=8451039&loc=SL6806780-109447 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name FASB Staff Position (FSP) -Number FAS19-1 -Paragraph 10 -Subparagraph a -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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- Definition Purchases during the period (excluding transactions that are eliminated in consolidated or combined financial statements) with related party. + References No definition available. + Details
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- Definition Identify the stated interest rate per the agreement, for example, leasing and debt arrangements between related parties. + References No definition available. + Details
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- Definition The number of units or percentage investment held in the subsidiary by the limited liability company or limited partnership. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 22 -Article 12 + Details
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