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Inventories (Tables)
12 Months Ended
Dec. 31, 2011
Inventories  
Inventories

 

 

 
  At December 31,  
 
  2011   2010  
 
  (in thousands)
 

Raw materials

  $ 32,213   $  

Work in process

    47,010      

Finished goods

    33,207      
           

Total

  $ 112,430   $