Note 8 - Income Tax Provision (Details Textual) - USD ($)	12 Months Ended
	Oct. 31, 2022	Oct. 31, 2021	Oct. 31, 2020
Income Tax Expense (Benefit), Total	$ 139,000	$ 1,036,000
Effective Income Tax Rate Reconciliation, Percent, Total	9.20%	14.40%
Income taxes at federal statutory rate, percentage	21.00%	21.00%
Unrecognized Tax Benefits, Ending Balance	$ 134,000	$ 141,000	$ 107,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense, Total	13,000	13,000
Domestic Tax Authority [Member]
Unrecognized Tax Benefits, Ending Balance	$ 121,000	$ 128,000
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member]
Open Tax Year	2019 2020 2021 2022
State and Local Jurisdiction [Member]
Open Tax Year	2018 2019 2020 2021