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Note 2 - Revenue (Tables)
9 Months Ended
Sep. 30, 2022
Notes Tables  
Revenue from External Customers by Products and Services [Table Text Block]
  

Three Months Ended September 30,

  

Nine Months Ended September 30,

 
  

2022

  

2021

  

2022

  

2021

 

Product sales

 $10,534  $12,809  $32,889  $39,405 

Administrative fees, freight and other

  1,235   1,524   3,865   4,777 

Less: sales returns

  (53)  (57)  (132)  (285)

Total net sales

 $11,716  $14,276  $36,622  $43,897