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Note 4 - Inventories (Tables)
6 Months Ended
Jun. 30, 2015
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
 
 
June 30, 2015
 
 
December 31, 2014
 
Raw Materials
  $ 1,306     $ 1,510  
Work-in-Process
    324       467  
Finished Goods
    300       159  
Total
  $ 1,930     $ 2,136