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Note 3 - Concentrations of Credit Risk (Details Textual) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Oct. 31, 2022 | Oct. 31, 2021
Cash, Uninsured Amount | $ 3.1 |
Revenue from Contract with Customer Benchmark [Member] | Customer Concentration Risk [Member] | Wireless Carrier [Member] |  |
Concentration Risk, Percentage | 20.00% |
Revenue from Contract with Customer Benchmark [Member] | Customer Concentration Risk [Member] | One Distributor [Member] |  |
Concentration Risk, Percentage |  | 21.00%
Revenue from Contract with Customer Benchmark [Member] | Customer Concentration Risk [Member] | Distributor Two [Member] |  |
Concentration Risk, Percentage |  | 11.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Wireless Carrier [Member] |  |
Concentration Risk, Percentage | 14.00% |
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Distributor One [Member] |  |
Concentration Risk, Percentage | 19.00% | 28.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Distributor Two [Member] |  |
Concentration Risk, Percentage |  | 8.00%

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