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Note 4 - Inventories (Tables)
12 Months Ended
Dec. 31, 2021
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
  

December 31,

 
  

2021

  

2020

 

Finished goods

 $90,395  $73,979 

Work in process

  1,351   1,634 

Raw materials

  28,809   14,153 

Inventories

 $120,555  $89,766