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

Three Months Ended June 30,

  

Six Months Ended June 30,

 
  

2022

  

2021

  

2022

  

2021

 

Product sales

 $12,033  $14,565  $22,355  $26,596 

Administrative fees, freight and other

  1,373   1,699   2,630   3,253 

Less: sales returns

  (46)  (112)  (79)  (228)

Total net sales

 $13,360  $16,152  $24,906  $29,621