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Inventories, Net (Tables)
6 Months Ended
Jun. 30, 2011
Inventories, Net  
Components Of Inventories
     June 30,
2011
    December 31,
2010
    June 30,
2010
 
     (Dollars in Thousands)  

Finished products

   $ 361,377      $ 358,138      $ 345,330   

Products in process and raw materials

     9,793        13,842        14,937   

Supplies and expendable parts

     51,388        46,958        46,095   
                        
     422,558        418,938        406,362   

Less allowances

     (86,193     (87,044     (86,520
                        

Total

   $ 336,365      $ 331,894      $ 319,842