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Fair Value Measurements - Significant Unobservable Inputs (Details) (Gulf Properties, Fair Value Measurements Level 3, USD $) In Thousands, unless otherwise specified | Mar. 31, 2014
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Gulf Properties | Fair Value Measurements Level 3 |
Significant Unobservable Inputs |
Estimated future payments for plugging and abandonment | $ 426,661

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- Definition Estimated cash flows used as an input to measure fair value. + References No definition available. + Details
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Namespace Prefix: | sd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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