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Note 3 - Inventories
9 Months Ended
Sep. 30, 2017
Notes to Financial Statements  
Inventory Disclosure [Text Block]
3.
     
Inventories (In thousands)
 
   
September
30,
2017
   
December
31,
2016
 
                 
Inventories consist of:
               
Finished products
   
30
     
45
 
Net inventory
  $
30
     
45