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Note 11 - Revenue Recognition - Revenue Attributed to United States and All Other Countries (Details) - USD ($)	3 Months Ended		9 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2021	Jul. 31, 2020
Net sales	$ 15,634,760	$ 13,639,169	$ 43,252,447	$ 41,389,993
UNITED STATES
Net sales	12,922,510	11,086,545	35,007,855	33,432,451
Non-US [Member]
Net sales	$ 2,712,250	$ 2,552,624	$ 8,244,592	$ 7,957,542

X

- Definition

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.

+ References

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Reference 3: http://www.xbrl.org/2003/role/disclosureRef
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