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Inventories, Net (Tables)
12 Months Ended
Dec. 31, 2011
Inventories, Net [Abstract]  
Schedule Of Inventories, Net

    December 31

            

    (add 000)

   2011     2010  

    Finished products

   $ 350,685      $ 358,138   

    Products in process and raw materials

     11,116        13,842   

    Supplies and expendable parts

     53,287        46,958   
     415,088        418,938   

    Less allowances

     (92,481     (87,044

    Total

   $   322,607      $   331,894