Note 3 - Allowance for Doubtful Accounts for Trade Accounts Receivable

3 Months Ended

Jan. 31, 2020

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, 2020 and 2019 follows:

	Three Months Ended
	January 31,
	2020			2019
Balance at beginning of period	$	99,562		$	64,242
Bad debt expense (recovery)		(14,838	)		23,809
Balance at end of period	$	84,724		$	88,051