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Note 3 - Allowance for Doubtful Accounts for Trade Accounts Receivable

9 Months Ended

Jul. 31, 2021

Notes to Financial Statements

Allowance for Doubtful Accounts for Trade Accounts Receivable Disclosure [Text Block]

(3)

Allowance for Doubtful Accounts for Trade Accounts Receivable

A summary of changes in the allowance for doubtful accounts for trade accounts receivable for the nine months ended July 31, 2021 and 2020 follows:

		Nine Months Ended
		July 31,
		2021				2020
Balance at beginning of period		$	524,617			$	99,562
Bad debt expense			10,828				431,746
Balance at end of period		$	535,445			$	531,308