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Inventories (Tables)
3 Months Ended
Mar. 31, 2013
Inventories
Inventories consisted of the following:
 
   
March 31,
   
March 31,
   
Dec. 31,
 
   
2013
   
2012
   
2012
 
   
(Dollars in thousands)
 
                   
Raw materials
  $ 161,853     $ 181,546     $ 167,097  
Work-in-process
    129,548       129,396       108,385  
Finished goods
    443,084       458,987       330,077  
Other
    14,176       13,931       13,259  
      748,661       783,860       618,818  
Adjustment to value inventory
                       
at cost on the LIFO method
    (102,891 )     (95,937 )     (102,891 )
    $ 645,770     $ 687,923     $ 515,927