XML 38 R61.htm IDEA: XBRL DOCUMENT
v2.4.0.6

Fair Value Measurements - Reconciliation of Financial Assets and Liabilities Measured at Fair Value on Recurring Basis using Significant Unobservable Inputs (Detail) (Commodity derivative contracts, USD $) In Thousands, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2013 | Mar. 31, 2012
Commodity derivative contracts |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |
Beginning balance of Level 3 | $ (512) | $ (4,253)
Total realized and unrealized gains (losses) | (873) | 2,032
Settlements (received) paid | 1,174 | (454)
Ending balance of Level 3 | $ (211) | $ (2,675)

X
- Definition Fair Value, Measurement with Unobservable Inputs Reconciliation, Recurring Basis, Asset and Liabilities + References No definition available. + Details
Name: | sd_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilities
Namespace Prefix: | sd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

X
- Definition This item represents the amount of the total realized and unrealized gains or losses for the period which are included in the statement of income (or changes in net assets); the fair value of which assets and liabilities was or is measured on a recurring basis using significant unobservable inputs (Level 3). + References No definition available. + Details
Name: | sd_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilitiesGainsLosses
Namespace Prefix: | sd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Settlements that have taken place during the period in relation to assets and liabilities measured at fair value and categorized within Level 3 of the fair value hierarchy. + References No definition available. + Details
Name: | sd_FairValueMeasurementWithUnobservableInputsReconciliationRecurringBasisAssetAndLiabilitiesSettlements
Namespace Prefix: | sd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Details
Name: | us-gaap_FairValueAssetsMeasuredOnRecurringBasisUnobservableInputReconciliationLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration