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Note 3 - Inventories
3 Months Ended
Mar. 31, 2012
Inventory Disclosure [Text Block]
3.      Inventories

Inventories consist of the following:

   
December 31, 2011
   
March 31, 2012
 
             
Raw materials
  $ 1,339     $ 1,167  
Work-in-progress
    800       723  
Reserve for obsolescence
    (3 )     (3 )
Inventory, net
  $ 2,136     $ 1,887