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Note 3 - Allowance for Credit Losses for Trade Accounts Receivable (Tables)
6 Months Ended
Apr. 30, 2025
Notes Tables  
Accounts Receivable, Allowance for Credit Loss [Table Text Block]
   

Six Months Ended

 
   

April 30,

 
   

2025

   

2024

 

Balance at beginning of period

  $ 92,125     $ 71,189  

Bad debt recovery

    (27,232 )     (16,928 )

Balance at end of period

  $ 64,893     $ 54,261