Research and Development Expenses (Details) - USD ($) $ in Thousands |
3 Months Ended | |
|---|---|---|
May 31, 2023 |
May 31, 2022 |
|
| Research and Development Expenses | $ 4,490 | $ 6,800 |
| Machinery and Equipments [Member] | ||
| Research and Development Expenses | 1,236 | 1,890 |
| Employee Compensation R & D [Member] | ||
| Research and Development Expenses | 1,446 | 2,287 |
| External Engineering [Member] | ||
| Research and Development Expenses | 1,155 | 1,596 |
| Plant and Laboratory Operating Expenses [Member] | ||
| Research and Development Expenses | 469 | 866 |
| Other [Member] | ||
| Research and Development Expenses | $ 184 | $ 161 |