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Note 5 - Inventories (Tables)
9 Months Ended
Sep. 30, 2022
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   

September 30,

   

December 31,

 
   

2022

   

2021

 

Raw materials (1)

  $ 5,100     $ 3,894  

Finished goods

    1,863       1,958  

Total inventories

  $ 6,963     $ 5,852