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Inventories
3 Months Ended
Mar. 31, 2012
Inventories [Abstract]  
Inventories

2. Inventories

Inventories are stated at the lower of average cost or market and consist of the following:

 

                 
    March 31,     December 31,  
    2012     2011  
    (In thousands)  

Raw materials

  $ 11,709     $ 12,662  

Work-in-progress

    4,589       3,020  

Finished goods

    3,545       2,388  
   

 

 

   

 

 

 
    $ 19,843     $ 18,070  
   

 

 

   

 

 

 

Finished goods inventory consists primarily of completed systems at customer sites that are undergoing installation and acceptance testing.