Note 12 - Profit Sharing and 401k Plan (Details Textual) - USD ($) |
12 Months Ended | |
|---|---|---|
Mar. 31, 2025 |
Mar. 31, 2024 |
|
| Profit Sharing Defined Contribution Plan [Member] | ||
| Defined Contribution Plan, Cost | $ 0 | $ 0 |
| Defined Contribution 401K Plan [Member] | ||
| Defined Contribution Plan, Cost | $ 6,000 | $ 82,000 |
| Defined Contribution Plan, Employer Matching Contribution, Percent of Employees' Gross Pay | 2.00% | |