| Share-based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block] |
| | | Nine Months Ended | |
| | | November 30, | |
| | | 2021 | | | 2020 | |
| Outstanding non-vested restricted stock units as of February 28 or 29: | | | 209,450 | | | | 265,555 | |
| Granted | | | 26,058 | | | | - | |
| Vested | | | (117,470 | ) | | | (51,393 | ) |
| Cancelled/forfeited | | | (2,400 | ) | | | (1,344 | ) |
| Outstanding non-vested restricted stock units as of November 30: | | | 115,638 | | | | 212,818 | |
| | | | | | | | | |
| Weighted average grant date fair value | | $ | 9.23 | | | $ | 9.40 | |
| Weighted average remaining vesting period (in years) | | | 2.40 | | | | 3.92 | |
|