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Note 7 - Income Taxes - Income Tax Reconciliation (Details) - USD ($)
$ in Thousands
 12 Months Ended
Jan. 31, 2025
Jan. 31, 2024
Tax expense at federal statutory rate $ 3,882 $ 2,083
State expense, net of federal income tax effect 68 159
Domestic return to provision (82) 247
Global Intangible Low-Taxed Income inclusion 2,201 2,202
State NOL expirations 0 1,375
Permanent differences other 176 258
Differences in foreign tax rate (796) (598)
Reductions of uncertain tax positions of prior years 0 (239)
Deferred tax on unremitted earnings 152 195
Foreign withholding taxes 31 135
Research tax credit 265 247
All other, net expense (108) (5)
Total income tax (benefit) expense 5,377 (3,320)
Domestic Tax Jurisdiction [Member]    
Valuation allowance (468) (8,065)
State and Local Jurisdiction [Member]    
Valuation allowance $ 56 $ (1,314)