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Long-Term Debt (Tables)
 12 Months Ended
Dec. 31, 2011
Long-Term Debt [Abstract]  
Long-term debt
                 
    2011     2010  

7-1/8% senior notes due 2017

   $ 250,000     $ 250,000  

8-7/8% senior notes due 2020 1

     221,873       221,624  

7-7/8% senior notes due 2022 1

     247,902       —    

Bank Borrowings

     —         —    
   

 

 

    

 

 

  

Long-Term Debt 1

   $ 719,775     $ 471,624  
   

 

 

    

 

 

  

 

(1) Amounts are shown net of debt discount