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Note 2 - Allowance for Credit Losses for Trade Accounts Receivable - Summary of Changes in the Allowance for Doubtful Accounts for Trade Accounts Receivable (Details) - USD ($)
12 Months Ended
Oct. 31, 2025
Oct. 31, 2024
Balance at beginning of year $ 92,125 $ 71,189
Bad debt expense (recovery) (19,216) 20,936
Balance at end of year $ 72,909 $ 92,125