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Inventories
3 Months Ended
Mar. 31, 2013
Inventories [Abstract]  
Inventories

Note 4. Inventories

The components of inventories were as follows:

 

                 
    March 31,
2013
    December 31,
2012
 
    (in thousands)  

Raw materials

  $ 15,765     $ 16,422  

Work in process

    18,191       19,234  
   

 

 

   

 

 

 

Inventories

  $ 33,956     $ 35,656