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Note 5 - Inventories (Tables)
12 Months Ended
Dec. 31, 2016
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
 
 
December 31,
 
 
 
2016
 
 
2015
 
Raw materials
  $
59
     
194
 
Work in process
   
     
36
 
Finished goods
   
76
     
529
 
Total
  $
135
     
759