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Note 2 - Allowance for Doubtful Accounts for Trade Accounts Receivable

12 Months Ended

Oct. 31, 2021

Notes to Financial Statements

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

(2)

Allowance for Doubtful Accounts for Trade Accounts Receivable

A summary of changes in the allowance for doubtful accounts for trade accounts receivable for the years ended October 31, 2021, 2020 and 2019 follows:

		Years ended October 31,
		2021				2020				2019
Balance at beginning of year		$	524,617			$	99,562			$	64,242
Bad debt expense			10,750				425,055				60,381
Losses charged to allowance			(473,840	)			—				(25,061	)
Balance at end of year		$	61,527			$	524,617			$	99,562