Note 10 - Income Taxes (Details Textual) - USD ($)	3 Months Ended		9 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2023	Jul. 31, 2022	Oct. 31, 2022
Income Tax Expense (Benefit), Total	$ 482,000	$ (140,000)	$ 806,000	$ (196,000)
Benefit from income taxes	$ (482,000)	$ 140,000	$ (806,000)	$ 196,000
Effective Income Tax Rate Reconciliation, Percent, Total	22.70%	15.40%	26.60%	16.40%
Income Tax Expense (Benefit)	$ (482,000)	$ 140,000	$ (806,000)	$ 196,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total	168,000		168,000		$ 121,000
Unrecognized Tax Benefits, Ending Balance	$ 164,000		$ 164,000