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Note 3 - Allowance for Credit Losses for Trade Accounts Receivable (Tables)
3 Months Ended
Jan. 31, 2025
Notes Tables  
Accounts Receivable, Allowance for Credit Loss [Table Text Block]
   

Three Months Ended

 
   

January 31,

 
   

2025

   

2024

 

Balance at beginning of period

  $ 92,125     $ 71,189  

Bad debt recovery

    (37,240 )     (11,974 )

Balance at end of period

  $ 54,885     $ 59,215