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Note 4 - Inventories (Tables)
Apr. 30, 2022
Notes Tables  
Schedule of Inventory, Current [Table Text Block]
   

April 30,

   

October 31,

 
   

2022

   

2021

 

Finished goods

  $ 3,407,081     $ 4,211,098  

Work in process

    4,108,272       4,023,693  

Raw materials

    10,805,920       7,763,325  

Production supplies

    324,718       305,692  

Total

  $ 18,645,991     $ 16,303,808