XML 35 R24.htm IDEA: XBRL DOCUMENT v3.23.1
Note 3 - Concentrations of Credit Risk (Tables)
6 Months Ended
Apr. 30, 2023
Notes Tables  
Schedules of Concentration of Risk, by Risk Factor [Table Text Block]
   

Three Months Ended April 30,

   

Six Months Ended April 30,

 
   

2023

   

2022

   

2023

   

2022

 

Wireless provider

    20 %     24 %     18 %     28 %