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Long-Term Debt (Tables)
 6 Months Ended
Jun. 30, 2012
Long-Term Debt [Abstract]  
Summary of long-term debt
                 
    December 31,
2011		     June 30,
2012		  

Borrowing Base Facility

   $ 190,000     $ 167,355  

Secured Pipeline Loan

     3,000       —    
   

 

 

    

 

 

  

Total debt

     193,000       167,355  

Less current maturities included in current liabilities

     3,000       167,355  
   

 

 

    

 

 

  

Total long-term debt

   $ 190,000     $ —