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Note 5 - Income Taxes - Reconciliation of Effective Tax Rate (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Mar. 31, 2025 | Mar. 31, 2024
Statutory provision | $ (991) | $ 180
Foreign subsidiary | (118) | (248)
State taxes | (293) | 55
Permanent differences | 124 | 261
Adjustment to prior year taxes | (355) | 86
Valuation allowance | 1,636 | (244)
Provision for income tax expense | $ 3 | $ 90

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