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Inventories (Tables)
3 Months Ended
Mar. 31, 2012
Inventories
Inventories consisted of the following:

   
March 31,
   
March 31,
   
Dec. 31,
 
   
2012
   
2011
   
2011
 
   
(Dollars in thousands)
 
                   
Raw materials
  $ 181,546     $ 164,263     $ 191,590  
Work-in-process
    129,396       118,024       116,790  
Finished goods
    458,987       428,008       327,810  
Other
    13,931       13,137       13,781  
      783,860       723,432       649,971  
Adjustment to value inventory
                       
at cost on the LIFO method
    (95,937 )     (68,949 )     (95,823 )
    $ 687,923     $ 654,483     $ 554,148