XML 50 R30.htm IDEA: XBRL DOCUMENT v2.4.0.6
Accrued Liabilities (Tables)
 12 Months Ended
Dec. 31, 2011
Accrued Liabilities [Abstract]  
Accrued Liabilities
     2011      2010  
     (In thousands)  

Employee costs

    $ 22,518       $ 16,499   

Taxes

      13,480         1,310   

Lease operating expenses

      7,346         6,214   

Interest payable

      2,647         667   

Hedge settlements

      1,844         1,634   

Other

      3,898         3,769   
  

 

 

     

 

 

  

Total accrued liabilities

    $ 51,733       $ 30,093