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Derivatives - Additional Information (Details) (USD $) | 3 Months Ended | 1 Months Ended | 3 Months Ended
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Mar. 31, 2014 | Mar. 31, 2013 | Mar. 31, 2014 Mississippian Trust I | Mar. 31, 2014 Permian Trust | Mar. 31, 2014 Mississippian Trust II | Apr. 30, 2013 Senior Floating Rate Notes due 2014 Fixed To Floating Interest Rate Swap Through April 1st 2013 | Mar. 31, 2014 Commodity Derivatives | Mar. 31, 2013 Commodity Derivatives | Mar. 31, 2014 Cash Commodity Derivatives | Mar. 31, 2013 Cash Commodity Derivatives | Mar. 31, 2014 Cash Commodity Derivatives Early Settlements | Mar. 31, 2013 Cash Commodity Derivatives Early Settlements
Derivative Instruments and Hedging Activities Disclosure |  |  |  |  |  |  |  |  |  |  |  |
Contract period end |  |  |  |  |  | Apr. 01, 2013 |  |  |  |  |  |
Notional amount of interest rate swaps |  |  |  |  |  | $ 350,000,000 |  |  |  |  |  |
Derivative, fixed interest rate |  |  |  |  |  | 6.69% |  |  |  |  |  |
Commodity derivative contracts covering volumes of oil and gas production, date |  |  | Dec. 31, 2015 | Mar. 31, 2015 | Dec. 31, 2014 |  |  |  |  |  |  |
Loss on derivative contracts | $ 42,491,000 | $ 40,897,000 |  |  |  |  | $ 42,491,000 | $ 40,897,000 | $ 23,400,000 | $ 16,100,000 | $ 69,600,000 | $ 29,600,000

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- Details
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- Definition Date through which commodity derivatives cover oil and natural gas production for Trust. + References No definition available. + Details
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- Definition Fixed interest rate related to the interest rate derivative. + References No definition available. + Details
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- Definition Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5624171-113959 + Details
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- Definition Nominal or face amount used to calculate payments on the derivative liability. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1B -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5580258-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 1A -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=7476318&loc=SL5579245-113959 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Glossary Notional Amount -URI http://asc.fasb.org/extlink&oid=6519104 + Details
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- Definition Date the derivative contract matures, in CCYY-MM-DD format. + References No definition available. + Details
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