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Note 8 - Concentrations of Credit Risk - Sales (Details) - Revenue Benchmark [Member] - Customer Concentration Risk [Member]	3 Months Ended		9 Months Ended
	Jul. 31, 2021	Jul. 31, 2020	Jul. 31, 2021	Jul. 31, 2020
Wireless Provider [Member]
Concentration Risk, Percentage	21.00%		11.00%
Distributor A [Member]
Concentration Risk, Percentage	10.00%	18.00%	12.00%	15.00%
Distributor B [Member]
Concentration Risk, Percentage	10.00%	13.00%	11.00%	12.00%

X

- Definition

For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 280
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
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Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef
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-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=99393423&loc=d3e6404-108592

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