Note 7 - Income Taxes (Details Textual) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2024 |
|
| Operating Loss Carryforwards | $ 3,600 | |
| Reserve for Uncertain Tax Positions | 0 | $ 0 |
| Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount | 2,300 | |
| Expiration Commencing, Tax Year 2034-2037 [Member] | ||
| Operating Loss Carryforwards | 900 | |
| NOL Generated During 2017-2024 [Member] | ||
| Operating Loss Carryforwards | $ 2,700 |