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Note 10 - Income Taxes (Details Textual) - USD ($)
3 Months Ended
Jan. 31, 2023
Jan. 31, 2022
Oct. 31, 2022
Income Tax Expense (Benefit), Total $ 160,000 $ 80,000  
Effective Income Tax Rate Reconciliation, Percent, Total 12.30% 22.30%  
Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued, Total $ 199,000   $ 121,000
Unrecognized Tax Benefits, Ending Balance $ 195,000