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Note 6 - Inventory (Tables)
12 Months Ended
Dec. 31, 2021
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
  

December 31,

  

December 31,

 
  

2021

  

2020

 

Raw materials and supplies

 $1,179  $159 

Finished goods

  2,682   685 

Less: Reserve for excess and obsolete inventory

  (641

)

  (236

)

Total inventory, net

 $3,220  $608