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Note 11 - Revenue Recognition - Revenue Attributed to United States and All Other Countries (Details) - USD ($)	3 Months Ended
	Jan. 31, 2021	Jan. 31, 2020
Net sales	$ 11,876,573	$ 12,887,396
UNITED STATES
Net sales	9,703,610	10,488,348
Non-US [Member]
Net sales	$ 2,172,963	$ 2,399,048

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

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Namespace Prefix:	us-gaap_
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X

- Details

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Balance Type:
Period Type:

X

- Details

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Namespace Prefix:
Data Type:	na
Balance Type:
Period Type: