Note 3 - Allowance for Doubtful Accounts for Trade Accounts Receivable

6 Months Ended

Apr. 30, 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 six months ended April 30, 2020 and 2019 follows:

	Six Months Ended
	April 30,
	2020		2019
Balance at beginning of period	$	99,562	$	64,242
Bad debt expense		452,060		42,693
Losses charged to allowance		—		(24,811	)
Balance at end of period	$	551,622	$	82,124