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Note 3 - Allowance for Doubtful Accounts for Trade Accounts Receivable (Tables)

6 Months Ended

Apr. 30, 2020

Notes Tables

Summary of Changes in the Allowance for Doubtful Accounts for Trade Accounts Receivable [Table Text Block]

		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

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Summary Of Changes In The Allowance For Doubtful Accounts For Trade Accounts Receivable [Table Text Block]

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