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CONDENSED CONSOLIDATED BALANCE SHEETS (Parenthetical) (USD $)
In Thousands, except Share data, unless otherwise specified
Mar. 31, 2014
Dec. 31, 2013
Preferred stock, par value (in dollars per share) $ 0.001us-gaap_PreferredStockParOrStatedValuePerShare $ 0.001us-gaap_PreferredStockParOrStatedValuePerShare
Preferred stock, shares authorized (in shares) 50,000,000us-gaap_PreferredStockSharesAuthorized 50,000,000us-gaap_PreferredStockSharesAuthorized
Common stock, par value (in dollars per share) $ 0.001us-gaap_CommonStockParOrStatedValuePerShare $ 0.001us-gaap_CommonStockParOrStatedValuePerShare
Common stock, shares authorized (in shares) 800,000,000us-gaap_CommonStockSharesAuthorized 800,000,000us-gaap_CommonStockSharesAuthorized
Common stock, issued (in shares) 495,719,000us-gaap_CommonStockSharesIssued 491,609,000us-gaap_CommonStockSharesIssued
Common stock, outstanding (in shares) 494,651,000us-gaap_CommonStockSharesOutstanding 490,290,000us-gaap_CommonStockSharesOutstanding
8.5% Convertible perpetual preferred stock; 2,650 shares issued and outstanding at March 31, 2014 and December 31, 2013; aggregate liquidation preference of $265,000    
Preferred stock, shares outstanding (in shares) 2,650,000us-gaap_PreferredStockSharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= sd_ConvertibleEightPointFivePercentPerpetualPreferredStockMember		 2,650,000us-gaap_PreferredStockSharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= sd_ConvertibleEightPointFivePercentPerpetualPreferredStockMember
Preferred stock, shares issued (in shares) 2,650,000us-gaap_PreferredStockSharesIssued
/ us-gaap_StatementClassOfStockAxis
= sd_ConvertibleEightPointFivePercentPerpetualPreferredStockMember		 2,650,000us-gaap_PreferredStockSharesIssued
/ us-gaap_StatementClassOfStockAxis
= sd_ConvertibleEightPointFivePercentPerpetualPreferredStockMember
Preferred stock, aggregate liquidation preference $ 265,000us-gaap_PreferredStockLiquidationPreferenceValue
/ us-gaap_StatementClassOfStockAxis
= sd_ConvertibleEightPointFivePercentPerpetualPreferredStockMember		 $ 265,000us-gaap_PreferredStockLiquidationPreferenceValue
/ us-gaap_StatementClassOfStockAxis
= sd_ConvertibleEightPointFivePercentPerpetualPreferredStockMember
6.0% Convertible perpetual preferred stock; 2,000 shares issued and outstanding at March 31, 2014 and December 31, 2013; aggregate liquidation preference of $200,000    
Preferred stock, shares outstanding (in shares) 2,000,000us-gaap_PreferredStockSharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= sd_ConvertibleSixPercentPerpetualPreferredStockMember		 2,000,000us-gaap_PreferredStockSharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= sd_ConvertibleSixPercentPerpetualPreferredStockMember
Preferred stock, shares issued (in shares) 2,000,000us-gaap_PreferredStockSharesIssued
/ us-gaap_StatementClassOfStockAxis
= sd_ConvertibleSixPercentPerpetualPreferredStockMember		 2,000,000us-gaap_PreferredStockSharesIssued
/ us-gaap_StatementClassOfStockAxis
= sd_ConvertibleSixPercentPerpetualPreferredStockMember
Preferred stock, aggregate liquidation preference 200,000us-gaap_PreferredStockLiquidationPreferenceValue
/ us-gaap_StatementClassOfStockAxis
= sd_ConvertibleSixPercentPerpetualPreferredStockMember		 200,000us-gaap_PreferredStockLiquidationPreferenceValue
/ us-gaap_StatementClassOfStockAxis
= sd_ConvertibleSixPercentPerpetualPreferredStockMember
7.0% Convertible perpetual preferred stock; 3,000 shares issued and outstanding at March 31, 2014 and December 31, 2013; aggregate liquidation preference of $300,000    
Preferred stock, shares outstanding (in shares) 3,000,000us-gaap_PreferredStockSharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= sd_ConvertibleSevenPercentPerpetualPreferredStockMember		 3,000,000us-gaap_PreferredStockSharesOutstanding
/ us-gaap_StatementClassOfStockAxis
= sd_ConvertibleSevenPercentPerpetualPreferredStockMember
Preferred stock, shares issued (in shares) 3,000,000us-gaap_PreferredStockSharesIssued
/ us-gaap_StatementClassOfStockAxis
= sd_ConvertibleSevenPercentPerpetualPreferredStockMember		 3,000,000us-gaap_PreferredStockSharesIssued
/ us-gaap_StatementClassOfStockAxis
= sd_ConvertibleSevenPercentPerpetualPreferredStockMember
Preferred stock, aggregate liquidation preference $ 300,000us-gaap_PreferredStockLiquidationPreferenceValue
/ us-gaap_StatementClassOfStockAxis
= sd_ConvertibleSevenPercentPerpetualPreferredStockMember		 $ 300,000us-gaap_PreferredStockLiquidationPreferenceValue
/ us-gaap_StatementClassOfStockAxis
= sd_ConvertibleSevenPercentPerpetualPreferredStockMember