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Note 5 - Income Taxes (Details Textual) | 12 Months Ended
--- | ---
Mar. 31, 2024 USD ($) yr | Mar. 31, 2023 USD ($)
Operating Loss Carryforwards, Expiration Year (Year) | yr | 2,034 |
Deferred Tax Assets, Operating Loss Carryforwards, Not Subject to Expiration | $ 14,800,000 |
Income Tax Expense (Benefit) | $ 90,000 | $ 0
Effective Income Tax Rate Reconciliation, at Federal Statutory Income Tax Rate, Percent | 21.00% |
Income (Loss) from Continuing Operations before Income Taxes, Foreign | $ 1,181,000 | 772,000
Deferred Tax Assets, Valuation Allowance | 4,510,000 | 4,754,000
Accounting Standards Update 2019-12 [Member] |  |
Income Tax Expense (Benefit) | 9,000 | $ 7,000
Domestic Tax Jurisdiction [Member] |  |
Operating Loss Carryforwards | 14,800,000 |
Operating Loss Carryforwards | $ 14,800,000 |
Open Tax Year | 2020 |
State and Local Jurisdiction [Member] |  |
Operating Loss Carryforwards | $ 14,900,000 |
Operating Loss Carryforwards | $ 14,900,000 |

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