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Financial Instruments (Tables)
6 Months Ended
Jun. 30, 2011
Summary of Carrying Amounts and Estimated Fair Values of Other Financial Instruments
The following table summarizes the carrying amounts and estimated fair values of our other financial instruments at June 30, 2011:

     
Carrying
   
Fair
   
     
Amount
   
Value
   
     
(Dollars in thousands)
   
 
Assets:
             
 
Cash and cash equivalents
  $ 127,546     $ 127,546    
                     
 
Liabilities:
                 
 
Bank debt
    1,247,612       1,247,612    
 
7¼% Senior Notes
    244,817       267,500    
 
Interest rate swap agreements
    9,185       9,185    
 
Natural gas swap agreements
    46       46