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Note 4 - Inventories (Tables)
9 Months Ended
Sep. 30, 2012
Schedule of Inventory, Current [Table Text Block]
   
December 31,
2011
   
September 30,
2012
 
             
Raw materials
  $ 1,339     $ 1,106  
Work-in-progress
    800       845  
Reserve for obsolescence
    (3 )     (3 )
Inventory, net
  $ 2,136     $ 1,948