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Note 18 - Related Party Transactions (Tables)
6 Months Ended
Jun. 30, 2022
Notes Tables  
Schedule of Related Party Transactions [Table Text Block]
   

Three Months Ended June 30,

   

Six Months Ended June 30,

 
   

2022

   

2021

   

2022

   

2021

 

Related party revenue:

                               

NeutroPhase

  $ 509     $ 175     $ 657     $ 175  

Total related party revenue

  $ 509     $ 175     $ 657     $ 175  
                                 

Cost of goods sold:

                               

NeutroPhase

  $ 514     $ 131     $ 648     $ 131  

Total related party expenses

  $ 514     $ 131     $ 648     $ 131