Note 7 - Income Tax Provision (Benefit) (Details Textual) - USD ($)	12 Months Ended
	Oct. 31, 2024	Oct. 31, 2023	Oct. 31, 2022
Deferred Tax Assets, Valuation Allowance	$ 3,962,000	$ 124,000
Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount	3,800,000	100,000
Income Tax Expense (Benefit), Total	$ 2,796,000	$ (1,172,000)	$ (1,172,000)
Effective Income Tax Rate Reconciliation, Percent, Total	73.50%	(27.50%)
Income Tax Expense (Benefit), Total	$ (2,796,000)	$ 1,172,000	1,172,000
Effective Income Tax Rate Reconciliation, Percent, Total	(73.50%)	27.50%
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent	21.00%	21.00%
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total	$ 186,000	$ 178,000	$ 121,000
Unrecognized Tax Benefits that Would Impact Effective Tax Rate	81,000
Unrecognized Tax Benefits, Income Tax Penalties and Interest Expense	28,000	$ 20,000
General Business Tax Credit Carryforward [Member]
Tax Credit Carryforward, Amount	1,500,000
Domestic Tax Jurisdiction [Member]
Deferred Tax Assets, Valuation Allowance	3,800,000
Domestic Tax Jurisdiction [Member] | Research Tax Credit Carryforward [Member]
Tax Credit Carryforward, Amount	100,000
State and Local Jurisdiction [Member]
Operating Loss Carryforwards	600,000
State and Local Jurisdiction [Member] | Research Tax Credit Carryforward [Member]
Tax Credit Carryforward, Amount	300,000
State and Local Jurisdiction [Member] | Research Tax Credit Carryforward [Member] | Expiring [Member]
Tax Credit Carryforward, Amount	$ 200,000