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Note 5 - Inventory
3 Months Ended
Mar. 31, 2020
Notes to Financial Statements  
Inventory Disclosure [Text Block]
NOTE
5.
INVENTORY  
 
 
Inventory consisted of the following:
 
 
(in thousands)
 
March 31,
   
December 31,
 
   
2020
   
2019
 
Raw materials and supplies
  $
168
    $
185
 
Finished goods
   
614
     
554
 
Less: Reserve for excess and obsolete inventory
   
(230
)    
(247
)
Total inventory, net
  $
552
    $
492