PROPERTY AND EQUIPMENT (Summary of Property and Equipment) (Details) - USD ($) $ in Thousands |
Jun. 30, 2025 |
Mar. 31, 2025 |
|---|---|---|
| Property and equipment | ||
| Gross property and equipment | $ 34,712 | $ 34,836 |
| Less: accumulated depreciation | (26,879) | (26,810) |
| Total property and equipment, net | 7,833 | 8,026 |
| Land and land improvements | ||
| Property and equipment | ||
| Gross property and equipment | 433 | 433 |
| Buildings and building improvements | ||
| Property and equipment | ||
| Gross property and equipment | 9,552 | 9,552 |
| Furniture, fixtures and office equipment | ||
| Property and equipment | ||
| Gross property and equipment | 7,721 | 7,886 |
| Leasehold Improvements | ||
| Property and equipment | ||
| Gross property and equipment | 493 | 493 |
| Equipment leased to customers | ||
| Property and equipment | ||
| Gross property and equipment | 4,997 | 4,997 |
| Plant equipment | ||
| Property and equipment | ||
| Gross property and equipment | 10,995 | 11,011 |
| Vehicles | ||
| Property and equipment | ||
| Gross property and equipment | 464 | 464 |
| Construction in Progress | ||
| Property and equipment | ||
| Gross property and equipment | $ 57 | $ 0 |