XML 147 R120.htm IDEA: XBRL DOCUMENT v2.4.1.9
Incentive, Retirement and Deferred Compensation Plans - Additional Information (Details) (USD $)
In Millions, except Share data, unless otherwise specified
1 Months Ended 12 Months Ended 3 Months Ended 12 Months Ended
Jul. 31, 2013
Dec. 31, 2013
Sep. 30, 2013
Dec. 31, 2012
Dec. 31, 2011
Performance Units          
Employee Compensation Plans [Line Items]          
Award, grants in period 31,142us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsGrantsInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
       
Award, accrued liability   $ 1.8sd_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsTotalShareBasedLiabilitiesAccrued
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
     
Stock-based compensation   1.6us-gaap_AllocatedShareBasedCompensationExpense
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
     
Stock based compensation, capitalized   0.2us-gaap_EmployeeServiceShareBasedCompensationAllocationOfRecognizedPeriodCostsCapitalizedAmount
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
     
Performance units, vested in period   12,178us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
     
Total fair value of awards vested during the period   1.2us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsVestedInPeriodTotalFairValue
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
     
Performance units, forfeited in period   0us-gaap_ShareBasedCompensationArrangementByShareBasedPaymentAwardEquityInstrumentsOtherThanOptionsForfeitedInPeriod
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
     
Unrecognized compensation cost related to unvested awards   1.2us-gaap_EmployeeServiceShareBasedCompensationNonvestedAwardsTotalCompensationCostNotYetRecognized
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
     
Unrecognized compensation cost related to unvested awards, weighted average period of recognition   2 years      
Performance Units | Minimum          
Employee Compensation Plans [Line Items]          
Incentive plans, payout percentages of target values   50.00%sd_IncentivePlanPayoutPercentagesOfTargetValues
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
     
Performance Units | Maximum          
Employee Compensation Plans [Line Items]          
Incentive plans, payout percentages of target values   200.00%sd_IncentivePlanPayoutPercentagesOfTargetValues
/ us-gaap_AwardTypeAxis
= us-gaap_PerformanceSharesMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
     
Final Payments Under Existing Cash Bonus Program          
Employee Compensation Plans [Line Items]          
Payments to employees     10.9us-gaap_PaymentsToEmployees
/ us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis
= sd_FinalPaymentsUnderExistingCashBonusProgramMember
   
Management Annual Incentive Plan | Minimum          
Employee Compensation Plans [Line Items]          
Incentive plans, payout percentages of target values   0.00%sd_IncentivePlanPayoutPercentagesOfTargetValues
/ us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis
= sd_ManagementAnnualIncentivePlanMember
/ us-gaap_RangeAxis
= us-gaap_MinimumMember
     
Management Annual Incentive Plan | Maximum          
Employee Compensation Plans [Line Items]          
Incentive plans, payout percentages of target values   200.00%sd_IncentivePlanPayoutPercentagesOfTargetValues
/ us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis
= sd_ManagementAnnualIncentivePlanMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
     
Annual Incentive Plan          
Employee Compensation Plans [Line Items]          
Accrued bonuses   30.2us-gaap_AccruedBonusesCurrentAndNoncurrent
/ us-gaap_DeferredCompensationArrangementWithIndividualExcludingShareBasedPaymentsAndPostretirementBenefitsByTypeOfDeferredCompensationAxis
= sd_AnnualIncentivePlanMember
     
Retirement Plan          
Employee Compensation Plans [Line Items]          
Retirement plan, employer matching contribution, percent of match   100.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch
/ us-gaap_DeferredCompensationArrangementWithIndividualPostretirementBenefitsByTypeOfDeferredCompensationAxis
= sd_RetirementPlanMember
  100.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch
/ us-gaap_DeferredCompensationArrangementWithIndividualPostretirementBenefitsByTypeOfDeferredCompensationAxis
= sd_RetirementPlanMember
100.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercentOfMatch
/ us-gaap_DeferredCompensationArrangementWithIndividualPostretirementBenefitsByTypeOfDeferredCompensationAxis
= sd_RetirementPlanMember
Retirement plan, cost recognized   11.0us-gaap_DefinedContributionPlanCostRecognized
/ us-gaap_DeferredCompensationArrangementWithIndividualPostretirementBenefitsByTypeOfDeferredCompensationAxis
= sd_RetirementPlanMember
  11.4us-gaap_DefinedContributionPlanCostRecognized
/ us-gaap_DeferredCompensationArrangementWithIndividualPostretirementBenefitsByTypeOfDeferredCompensationAxis
= sd_RetirementPlanMember
7.4us-gaap_DefinedContributionPlanCostRecognized
/ us-gaap_DeferredCompensationArrangementWithIndividualPostretirementBenefitsByTypeOfDeferredCompensationAxis
= sd_RetirementPlanMember
Retirement Plan | Maximum          
Employee Compensation Plans [Line Items]          
Retirement plan, employer matching contribution, percent of employees' gross pay   15.00%us-gaap_DefinedContributionPlanEmployerMatchingContributionPercent
/ us-gaap_DeferredCompensationArrangementWithIndividualPostretirementBenefitsByTypeOfDeferredCompensationAxis
= sd_RetirementPlanMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember
     
Deferred Compensation Plan          
Employee Compensation Plans [Line Items]          
Deferred compensation plan, compensation expense   $ 2.7us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense
/ us-gaap_DeferredCompensationArrangementWithIndividualPostretirementBenefitsByTypeOfDeferredCompensationAxis
= sd_DeferredCompensationPlanMember
  $ 3.5us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense
/ us-gaap_DeferredCompensationArrangementWithIndividualPostretirementBenefitsByTypeOfDeferredCompensationAxis
= sd_DeferredCompensationPlanMember
$ 3.1us-gaap_DeferredCompensationArrangementWithIndividualCompensationExpense
/ us-gaap_DeferredCompensationArrangementWithIndividualPostretirementBenefitsByTypeOfDeferredCompensationAxis
= sd_DeferredCompensationPlanMember
Deferred Compensation Plan | Maximum          
Employee Compensation Plans [Line Items]          
Deferred compensation plan, employer match percentage   15.00%us-gaap_DeferredCompensationArrangementWithIndividualCashAwardsGrantedPercentage
/ us-gaap_DeferredCompensationArrangementWithIndividualPostretirementBenefitsByTypeOfDeferredCompensationAxis
= sd_DeferredCompensationPlanMember
/ us-gaap_RangeAxis
= us-gaap_MaximumMember