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Supplemental Cash Flow Information (Details) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Dec. 31, 2014
Dec. 31, 2013
Dec. 31, 2012
Supplemental Disclosure of Cash Flow Information      
Cash paid for interest, net of amounts capitalized $ (235,793)us-gaap_InterestPaidNet $ (274,850)us-gaap_InterestPaidNet $ (257,152)us-gaap_InterestPaidNet
Cash received (paid) for income taxes 1,928us-gaap_IncomeTaxesPaidNet (4,610)us-gaap_IncomeTaxesPaidNet (1,324)us-gaap_IncomeTaxesPaidNet
Supplemental Disclosure of Noncash Investing and Financing Activities      
Deposit on pending sale 0us-gaap_IncreaseDecreaseInRestrictedCash (255,000)us-gaap_IncreaseDecreaseInRestrictedCash 255,000us-gaap_IncreaseDecreaseInRestrictedCash
Change in accrued capital expenditures (55,557)sd_ChangeInAccruedCapitalExpenditures 72,848sd_ChangeInAccruedCapitalExpenditures (77,610)sd_ChangeInAccruedCapitalExpenditures
Asset retirement costs capitalized 4,968us-gaap_AssetRetirementObligationLiabilitiesIncurred 5,078us-gaap_AssetRetirementObligationLiabilitiesIncurred 7,479us-gaap_AssetRetirementObligationLiabilitiesIncurred
Common stock issued in connection with acquisition $ 0us-gaap_StockIssuedDuringPeriodValueAcquisitions $ 0us-gaap_StockIssuedDuringPeriodValueAcquisitions $ 542,138us-gaap_StockIssuedDuringPeriodValueAcquisitions