Note 9 - Income Taxes (Details Textual) - USD ($)	3 Months Ended
	Jan. 31, 2022	Jan. 31, 2021	Oct. 31, 2021
Income Tax Expense (Benefit), Total	$ (80,000)	$ (194,000)
Effective Income Tax Rate Reconciliation, Percent, Total	22.30%	32.40%
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total	$ 174,000		$ 141,000
Unrecognized Tax Benefits, Ending Balance	$ 168,000