Note 9 - Net Income (Loss) Per Share - Components of Reconciliation of Numerators and Denominators Net Loss Per Share (Details) - USD ($)	3 Months Ended
	Jan. 31, 2022	Jan. 31, 2021
Net loss	$ (935,793)	$ (2,141,480)
Shares (denominator) (in shares)	7,511,190	7,352,781
Net loss per share: Basic and diluted (in dollars per share)	$ (0.12)	$ (0.29)