Note 11 - Revenue Recognition - Revenue Attributed to United States and All Other Countries (Details) - USD ($)	3 Months Ended
Jan. 31, 2022	Jan. 31, 2021
Net sales	$ 14,440,295	$ 11,876,573
UNITED STATES
Net sales	12,144,379	9,703,610
Non-US [Member]
Net sales	$ 2,295,916	$ 2,172,963

Amount, including tax collected from customer, of revenue from satisfaction of performance obligation by transferring promised good or service to customer. Tax collected from customer is tax assessed by governmental authority that is both imposed on and concurrent with specific revenue-producing transaction, including, but not limited to, sales, use, value-added and excise.

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+ Details