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, 2023	Jan. 31, 2022
Net income (loss)	$ 809,984	$ (935,793)
Shares (denominator) (in shares)	7,893,194	7,511,190
Net income (loss) per share: Basic and diluted (in dollars per share)	$ 0.10	$ (0.12)