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Note 2 - Concentrations of Credit Risk (Details Textual) $ in Millions	3 Months Ended		9 Months Ended
	Jul. 31, 2024 USD ($)	Jul. 31, 2023	Jul. 31, 2024 USD ($)	Jul. 31, 2023
Cash, Uninsured Amount	$ 1.4		$ 1.4
Wireless Carrier [Member]
Number of Customers	1
Wireless Carrier [Member] | Customer Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member]
Concentration Risk, Percentage	18.00%	12.00%	18.00%
Wireless Carrier [Member] | Customer Concentration Risk [Member] | Accounts Receivable [Member]
Concentration Risk, Percentage		12.00%
One Distributor [Member]
Number of Customers	1
One Distributor [Member] | Customer Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member]
Concentration Risk, Percentage				13.00%
One Distributor [Member] | Customer Concentration Risk [Member] | Accounts Receivable [Member]
Concentration Risk, Percentage	10.00%		10.00%
Two Distributors [Member]
Number of Customers			0
Two Distributors [Member] | Customer Concentration Risk [Member] | Revenue from Contract with Customer Benchmark [Member]
Concentration Risk, Percentage			10.00%
Distributor One [Member] | Customer Concentration Risk [Member] | Accounts Receivable [Member]
Concentration Risk, Percentage				10.00%

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- Definition

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+ References

No definition available.

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- Definition

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

+ References

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- 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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