Quarterly report pursuant to Section 13 or 15(d)

股权投资 Equity Investment (Diamondback Income Statement Disclosures) (Details)

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股权投资 Equity Investment (Diamondback Income Statement Disclosures) (Details) (Diamondback Energy LLC [Member], 美元$)
In Thousands, unless otherwise specified
3个月结束
3月. 31, 2013
3月. 31, 2012
Diamondback Energy LLC [Member]
   
Schedule of Equity Method Investments [Line Items]    
收入总额 $ 28,909 $ 16,351
Income from operations 8,662 6,737
净收益 $ 5,396 $ 1,477