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Note 8 - Income Taxes (Details Textual) - USD ($)
3 Months Ended 9 Months Ended
Oct. 31, 2025
Oct. 31, 2024
Oct. 31, 2025
Oct. 31, 2024
Income Tax Expense (Benefit) $ 716,000 $ 396,000 $ 1,680,000 $ 1,313,000
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest $ 778,000 $ 1,687,000 $ 2,701,000 $ 4,356,000
Effective Income Tax Rate Reconciliation, Percent 92.00% 23.00% 63.00% 30.00%
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   $ 0  
Unrecognized Tax Benefits $ 0 $ 0 $ 0 $ 0
Domestic Tax Jurisdiction [Member]        
Open Tax Year     2019 2020 2021 2022 2023 2024 2025  
State and Local Jurisdiction [Member]        
Open Tax Year     2019 2020 2021 2022 2023 2024  
Foreign Tax Jurisdiction [Member] | SINGAPORE        
Open Tax Year     2017 2018 2019 2020 2021 2022 2023 2024 2025  
Foreign Tax Jurisdiction [Member] | Other Countries [Member]        
Open Tax Year     2018 2019 2020 2021 2022 2023 2024 2025