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Note 1 - Business Activities and Summary of Significant Accounting Policies - Estimated Amortization Expense (Details) - USD ($)
$ in Thousands
Oct. 31, 2021
Oct. 31, 2020
2022 $ 374  
2023 364  
2024 364  
2025 320  
2026 320  
Thereafter 997  
Total $ 2,739 $ 3,181