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Note 8 - Income Taxes (Details Textual) - USD ($)
3 Months Ended
Apr. 30, 2025
Apr. 30, 2024
Income Tax Expense (Benefit) $ 294,000 $ 245,000
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest $ (676,000) 1,199,000
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent 21.00%  
Deferred Tax Liability Not Recognized, Amount of Unrecognized Deferred Tax Liability, Undistributed Earnings of Foreign Subsidiaries $ 0  
Unrecognized Tax Benefits $ 0 $ 0
Domestic Tax Jurisdiction [Member]    
Open Tax Year 2019 2020 2021 2022 2023 2024  
State and Local Jurisdiction [Member]    
Open Tax Year 2017 2018 2019 2020 2021 2022 2023 2024  
Foreign Tax Jurisdiction [Member] | SINGAPORE    
Open Tax Year 2017 2018 2019 2020 2021 2022 2023 2024  
Foreign Tax Jurisdiction [Member] | Other Countries [Member]    
Open Tax Year 2018 2019 2020 2021 2022 2023 2024