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Inventory
3 Months Ended
Mar. 31, 2012
Inventory
4. Inventory

 

Inventory consists of the following:

 

    March 31,
2012
    December 31,
2011
 
    (in thousands)  
             
Inventory                
                 
Raw materials   $ 965     $ 1,016  
Finished goods     2,373       2,575  
                 
Total inventory, net   $ 3,338     $ 3,591