Note 8 - Income Tax Provision (Details Textual) - USD ($)	12 Months Ended
	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2019
Income Tax Expense (Benefit), Total	$ 1,036,000	$ (367,000)
Effective Income Tax Rate Reconciliation, Percent, Total	14.40%	82.00%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	21.00%
Unrecognized Tax Benefits, Ending Balance	$ 141,000	$ 107,000	$ 80,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense, Total	13,000	11,000
Effective Income Tax Rate Reconciliation, CARES Act, Operating Loss Carryforwards Carried Back, Amount	(35,000)
Domestic Tax Authority [Member]
Unrecognized Tax Benefits, Ending Balance	$ 102,000	$ 96,000
Domestic Tax Authority [Member] | Internal Revenue Service (IRS) [Member]
Open Tax Year	2018 2019 2020 2021
State and Local Jurisdiction [Member]
Open Tax Year	2017 2018 2019 2020 2021