Note 4 - Supplemental Statements of Cash Flows Information - Supplemental Statements of Cash Flows Information (Details) - USD ($) $ in Thousands	12 Months Ended
Jan. 31, 2026	Jan. 31, 2025
Right-of-use assets obtained in exchange for operating lease liabilities (See Note 7 - "Leases".)	$ 950	$ 834
Income taxes paid - federal	0	0
Income taxes paid - state	14	8
Total income taxes paid	2,202	1,654
Inland Revenue, Singapore (IRAS) [Member]
Income taxes paid - foreign	2,066	1,343
His Majesty's Revenue and Customs (HMRC) [Member]
Income taxes paid - foreign	0	159
Other Foreign Tax Authorities [Member]
Income taxes paid - foreign	$ 122	$ 144

Amount, after income tax refund received, of cash paid to federal (national) tax jurisdiction for tax on income.

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