Note 3 - Concentrations of Credit Risk (Details Textual) - USD ($) $ in Millions	3 Months Ended
	Jan. 31, 2023	Jan. 31, 2022
Cash, Uninsured Amount	$ 2.6
Revenue from Contract with Customer Benchmark [Member] | Customer Concentration Risk [Member] | Wireless Carrier [Member]
Concentration Risk, Percentage	15.00%
Revenue from Contract with Customer Benchmark [Member] | Customer Concentration Risk [Member] | One Distributor [Member]
Concentration Risk, Percentage		32.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Wireless Carrier [Member]
Concentration Risk, Percentage	16.00%
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Distributor One [Member]
Concentration Risk, Percentage		37.00%