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Accrued Liabilities (Tables)
9 Months Ended
Sep. 30, 2011
Accrued Liabilities 
Accrued Liabilities
     September 30,
2011		      December 31,
2010		  
     (In thousands)  

Employee costs

    $ 16,487       $ 16,499   

Lease operating expense

      6,875         6,214   

Taxes

      24,804         1,310   

Interest payable

      7,010         667   

Hedge settlements

      524         1,634   

Other

      4,888         3,769   
  

 

 

     

 

 

  

Total accrued liabilities

    $ 60,588       $ 30,093