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Note 3 - Concentrations of Credit Risk (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2021	Oct. 31, 2020
Cash, Uninsured Amount	$ 12.3
Revenue from Contract with Customer Benchmark [Member] | Customer Concentration Risk [Member] | Wireless Carrier [Member]
Concentration Risk, Percentage	21.00%
Revenue from Contract with Customer Benchmark [Member] | Customer Concentration Risk [Member] | One Distributor [Member]
Concentration Risk, Percentage	11.00%	14.00%
Revenue from Contract with Customer Benchmark [Member] | Customer Concentration Risk [Member] | Distributor Two [Member]
Concentration Risk, Percentage		12.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Wireless Carrier [Member]
Concentration Risk, Percentage	28.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | One Distributor [Member]
Concentration Risk, Percentage	8.00%	12.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Distributor Two [Member]
Concentration Risk, Percentage		12.00%

X

- Definition

The amount of cash as of the balance sheet date that is not insured by the Federal Deposit Insurance Corporation.

+ References

No definition available.

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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
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