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Note 5 - Inventories (Tables)
3 Months Ended
Mar. 31, 2023
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
  

March 31,

  

December 31,

 
  

2023

  

2022

 
         

Finished goods

 $115,177  $67,006 

Work-in-process

  19,136   19,037 

Raw material and supplies

  50,270   50,458 
  $184,583  $136,501