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Note 5 - Inventories (Tables)
9 Months Ended
Sep. 30, 2015
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
 
 
Sept. 30,
2015
   
Dec. 31,
2014
 
Raw materials
  $ 2,641     $ 2,505  
Work in process
    462       406  
Inventory consigned to others
    137       129  
Finished goods
    562       729  
Total inventories    $ 3,802     $ 3,769