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Note 6 - Inventory (Tables)
6 Months Ended
Jun. 30, 2022
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   

June 30,

   

December 31,

 
   

2022

   

2021

 

Raw materials and supplies

  $ 1,339     $ 1,179  

Finished goods

    2,984       2,682  

Less: Reserve for excess and obsolete inventory

    (522

)

    (641

)

Total inventory, net

  $ 3,801     $ 3,220