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Derivatives (Tables)
9 Months Ended
Sep. 30, 2012
Derivatives [Abstract]  
Schedule Of Open Forward Positions On Outstanding Put Agreements
            Fair Value at
Period Monthly Volume Total Volume   Floor/Cap NYMEX   June 30, 2012
  Oil (Bbls) Oil (Bbls)   $ per Bbl   (in thousands)
4th Qtr 2012 10,000 30,000 $ 65.00-N/A $ 2
 
        Current Asset   $ 2

 

  

            Fair Value at
Period Monthly Volume Total Volume   Floor/Cap NYMEX   December 31, 2011
  Oil (Bbls) Oil (Bbls)   $ per Bbl   (in thousands)
1st Qtr 2012 10,000 30,000 $ 65.00-N/A $ 2
2nd Qtr 2012 10,000 30,000 $ 65.00-N/A $ 23
3rd Qtr 2012 10,000 30,000 $ 65.00-N/A $ 48
4th Qtr 2012 10,000 30,000 $ 65.00-N/A $ 69
 
        Current Asset   $ 142