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Fair Value Measurements - Estimated Fair Value and Carrying Value of Senior Notes (Details) (USD $) In Thousands, unless otherwise specified | Dec. 31, 2014 | Dec. 31, 2013
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Fair Value Assets And Liabilities Measured On Recurring Basis |  |  |  |
Carrying value | $ 3,195,436 us-gaap_LongTermDebt |  | $ 3,194,907 us-gaap_LongTermDebt |
8.75% Senior Notes due 2020 |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring Basis |  |  |  |
Carrying value | 445,402 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = sd_SeniorNotesEightPointSevenFivePercentDue2020Member | [1] | 444,736 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = sd_SeniorNotesEightPointSevenFivePercentDue2020Member | [1]
7.5% Senior Notes due 2021 |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring Basis |  |  |  |
Carrying value | 1,178,486 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = sd_SeniorNotesSevenPointFivePercentDue2021Member | [2] | 1,178,922 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = sd_SeniorNotesSevenPointFivePercentDue2021Member | [2]
8.125% Senior Notes due 2022 |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring Basis |  |  |  |
Carrying value | 750,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = sd_SeniorNotesEightPointOneTwoFivePercentDue2022Member |  | 750,000 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = sd_SeniorNotesEightPointOneTwoFivePercentDue2022Member |
7.5% Senior Notes due 2023 |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring Basis |  |  |  |
Carrying value | 821,548 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = sd_SeniorNotesSevenPointFivePercentDue2023Member | [3] | 821,249 us-gaap_LongTermDebt / us-gaap_DebtInstrumentAxis = sd_SeniorNotesSevenPointFivePercentDue2023Member | [3]
Fair Value Measurements Level 2 | 8.75% Senior Notes due 2020 |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring Basis |  |  |  |
Fair value | 303,750 us-gaap_DebtInstrumentFairValue / us-gaap_DebtInstrumentAxis = sd_SeniorNotesEightPointSevenFivePercentDue2020Member / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member | [1] | 486,000 us-gaap_DebtInstrumentFairValue / us-gaap_DebtInstrumentAxis = sd_SeniorNotesEightPointSevenFivePercentDue2020Member / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member | [1]
Fair Value Measurements Level 2 | 7.5% Senior Notes due 2021 |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring Basis |  |  |  |
Fair value | 752,000 us-gaap_DebtInstrumentFairValue / us-gaap_DebtInstrumentAxis = sd_SeniorNotesSevenPointFivePercentDue2021Member / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member | [2] | 1,230,813 us-gaap_DebtInstrumentFairValue / us-gaap_DebtInstrumentAxis = sd_SeniorNotesSevenPointFivePercentDue2021Member / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member | [2]
Fair Value Measurements Level 2 | 8.125% Senior Notes due 2022 |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring Basis |  |  |  |
Fair value | 472,500 us-gaap_DebtInstrumentFairValue / us-gaap_DebtInstrumentAxis = sd_SeniorNotesEightPointOneTwoFivePercentDue2022Member / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member |  | 795,000 us-gaap_DebtInstrumentFairValue / us-gaap_DebtInstrumentAxis = sd_SeniorNotesEightPointOneTwoFivePercentDue2022Member / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member |
Fair Value Measurements Level 2 | 7.5% Senior Notes due 2023 |  |  |  |
Fair Value Assets And Liabilities Measured On Recurring Basis |  |  |  |
Fair value | $ 519,750 us-gaap_DebtInstrumentFairValue / us-gaap_DebtInstrumentAxis = sd_SeniorNotesSevenPointFivePercentDue2023Member / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member | [3] | $ 837,375 us-gaap_DebtInstrumentFairValue / us-gaap_DebtInstrumentAxis = sd_SeniorNotesSevenPointFivePercentDue2023Member / us-gaap_FairValueByFairValueHierarchyLevelAxis = us-gaap_FairValueInputsLevel2Member | [3]
[1] | Carrying value is net of $4,598 and $5,264 discount at December 31, 2014 and 2013, respectively.
[2] | Carrying value includes a premium, applicable to notes issued in August 2012, of $3,486 and $3,922 at December 31, 2014 and 2013, respectively.
[3] | Carrying value is net of $3,452 and $3,751 discount at December 31, 2014 and 2013, respectively.

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- Definition Fair value portion of debt instrument payable, including, but not limited to, notes payable and loans payable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13433-108611 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 12 -URI http://asc.fasb.org/extlink&oid=35750535&loc=d3e13476-108611 + Details
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- Definition Carrying amount of long-term debt, net of unamortized discount or premium, including current and noncurrent amounts. Includes, but not limited to, notes payable, bonds payable, debentures, mortgage loans and commercial paper. Excludes capital lease obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 7 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.16) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20, 22 -Article 5 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 944 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03.16) -URI http://asc.fasb.org/extlink&oid=6879938&loc=d3e572229-122910 + Details
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