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Property, Plant and Equipment (Details) (USD $)
In Thousands, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Oil and natural gas properties    
Proved(1) $ 10,443,534us-gaap_CapitalizedCostsProvedProperties [1] $ 10,972,816us-gaap_CapitalizedCostsProvedProperties [1]
Unproved 292,459us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationCumulative 531,606us-gaap_CapitalizedCostsOfUnprovedPropertiesExcludedFromAmortizationCumulative
Total oil and natural gas properties 10,735,993us-gaap_OilAndGasPropertyFullCostMethodGross 11,504,422us-gaap_OilAndGasPropertyFullCostMethodGross
Less: accumulated depreciation, depletion and impairment (6,043,109)us-gaap_CapitalizedCostsAccumulatedDepreciationDepletionAmortizationAndValuationAllowanceForRelatingToOilAndGasProducingActivities (5,762,969)us-gaap_CapitalizedCostsAccumulatedDepreciationDepletionAmortizationAndValuationAllowanceForRelatingToOilAndGasProducingActivities
Net oil and natural gas properties capitalized costs 4,692,884us-gaap_OilAndGasPropertyFullCostMethodNet 5,741,453us-gaap_OilAndGasPropertyFullCostMethodNet
Land 18,404us-gaap_Land 18,423us-gaap_Land
Non-oil and natural gas equipment(2) 602,706us-gaap_MachineryAndEquipmentGross [2] 600,603us-gaap_MachineryAndEquipmentGross [2]
Buildings and structures(3) 237,578us-gaap_BuildingsAndImprovementsGross [3] 233,405us-gaap_BuildingsAndImprovementsGross [3]
Total 858,688us-gaap_PropertyPlantAndEquipmentGross 852,431us-gaap_PropertyPlantAndEquipmentGross
Less accumulated depreciation and amortization (299,346)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment (286,209)us-gaap_AccumulatedDepreciationDepletionAndAmortizationPropertyPlantAndEquipment
Other property, plant and equipment, net 559,342us-gaap_PropertyPlantAndEquipmentNet 566,222us-gaap_PropertyPlantAndEquipmentNet
Total property, plant and equipment, net $ 5,252,226sd_TotalPropertyAndEquipmentNet $ 6,307,675sd_TotalPropertyAndEquipmentNet
[1] Includes cumulative capitalized interest of approximately $25.9 million and $23.4 million at March 31, 2014 and December 31, 2013, respectively.
[2] Includes cumulative capitalized interest of approximately $4.3 million at both March 31, 2014 and December 31, 2013.
[3] Includes cumulative capitalized interest of approximately $13.4 million and $12.0 million at March 31, 2014 and December 31, 2013, respectively.