Note 16 - Employee Benefit Plan (Details Textual) - USD ($) $ in Millions |
12 Months Ended | |
|---|---|---|
Mar. 31, 2026 |
Mar. 31, 2025 |
|
| Defined Contribution Plan, Maximum Annual Contributions Per Employee, Percent | 5.00% | |
| Defined Contribution Plan, Cost | $ 0.2 | $ 0.2 |
| Maximum [Member] | ||
| Defined Contribution Plan, Employer Matching Contribution, Percent of Match | 100.00% | |