Note 8 - Income Taxes (Details Textual) - USD ($)	3 Months Ended	6 Months Ended
Jul. 31, 2026	Jul. 31, 2025	Jul. 31, 2026	Jul. 31, 2025
Income Tax Expense (Benefit)	$ 18,000	$ 670,000	$ 494,000	$ 964,000
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	(1,716,000)	2,599,000	$ (1,651,000)	1,923,000
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		$ 0
Unrecognized Tax Benefits	$ 0	$ 0	$ 0	$ 0
Income Tax Jurisdiction, Domestic Federal [Member]
Open Tax Year			2022 2023 2024 2025 2026
Income Tax Jurisdiction, Domestic State and Local [Member]
Open Tax Year			2021 2022 2023 2024 2025 2026
Income Tax Jurisdiction, Foreign [Member] \| Inland Revenue, Singapore (IRAS) [Member]
Open Tax Year			2018 2019 2020 2021 2022 2023 2024 2025 2026
Income Tax Jurisdiction, Foreign [Member] \| Other Foreign Tax Authorities [Member]
Open Tax Year			2019 2020 2021 2022 2023 2024 2025 2026

Amount of deferred tax liability not recognized because of the exceptions to comprehensive recognition of deferred taxes related to undistributed earnings of foreign subsidiaries.

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