Stock-based Compensation Plans (Details 1) - $ / shares |
9 Months Ended | |
|---|---|---|
Nov. 30, 2018 |
Nov. 30, 2017 |
|
| Number of Warrant Shares | ||
| Outstanding, beginning of period | 2,515,248 | 1,647,670 |
| Granted | 13,209 | 2,310,000 |
| Exercised | (20,000) | (213,770) |
| Forfeited | (100,000) | (515,418) |
| Expired | (62,500) | (543,900) |
| Outstanding, end of period | 2,345,957 | 2,684,582 |
| Exercisable, end of period | 1,206,081 | 966,250 |
| Weighted Average Exercise Price | ||
| Outstanding, beginning of period | $ 8.21 | $ 2.91 |
| Granted | 11.52 | 9.23 |
| Exercised | 0.80 | 5.52 |
| Forfeited | 5.25 | 4.95 |
| Expired | 4.80 | 5.86 |
| Outstanding, end of period | 8.44 | 7.16 |
| Exercisable, end of period | $ 8.15 | $ 4.90 |