Note 3 - Allowance for Doubtful Accounts for Trade Accounts Receivable

3 Months Ended

Jan. 31, 2022

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 three months ended January 31, 2022 and 2021 follows:

	Three Months Ended
	January 31,
	2022			2021
Balance at beginning of period	$	61,527		$	524,617
Bad debt recovery		(4,328	)		(7,524	)
Balance at end of period	$	57,199		$	517,093