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Note 9 - Net Income (Loss) Per Share - Components of Reconciliation of Numerators and Denominators Net Loss Per Share (Details) - USD ($)	3 Months Ended				6 Months Ended
	Apr. 30, 2022	Jan. 31, 2022	Apr. 30, 2021	Jan. 31, 2021	Apr. 30, 2022	Apr. 30, 2021
Net loss	$ (227,991)	$ (935,793)	$ 3,385,159	$ (2,141,480)	$ (1,163,784)	$ 1,243,679
Shares (denominator) (in shares)	7,487,337		7,536,116		7,464,862	7,536,121
Net income (loss) per share: Basic and diluted (in dollars per share)	$ (0.03)		$ 0.45		$ (0.16)	$ 0.17

X

- Definition

The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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