Note 11 - Income Tax Provision (Details Textual) - USD ($) $ in Thousands |
12 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Unrecognized Tax Benefits, Income Tax Penalties and Interest Accrued | $ 0 | $ 0 |
| Deferred Tax Assets, Valuation Allowance | 5,909 | $ 4,849 |
| Valuation Allowance, Deferred Tax Asset, Increase (Decrease), Amount | 1,100 | |
| Income Tax Jurisdiction, Domestic Federal [Member] | ||
| Operating Loss Carryforwards | 14,100 | |
| Operating Loss Carryforwards, Subject to Expiration | 3,500 | |
| Operating Loss Carryforwards, Not Subject To Expiration | $ 10,600 | |
| Open Tax Year | 2018 2019 2020 2021 2022 2023 2024 2025 2026 | |
| Income Tax Jurisdiction, Domestic State and Local [Member] | ||
| Operating Loss Carryforwards | $ 23,100 | |
| Open Tax Year | 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 |