Note 3 - Allowance for Doubtful Accounts for Trade Accounts Receivable

9 Months Ended

Jul. 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 nine months ended July 31, 2020 and 2019 follows:

	Nine Months Ended
	July 31,
	2020		2019
Balance at beginning of period	$	99,562	$	64,242
Bad debt expense		431,746		56,483
Losses charged to allowance		—		(25,061	)
Balance at end of period	$	531,308	$	95,664