Share-Based Payments (Details 1) - $ / shares
|
6 Months Ended |
|
|
Aug. 31, 2019 |
Aug. 31, 2018 |
Feb. 28, 2019 |
Feb. 28, 2018 |
| Exercise price |
$ 6.55
|
$ 8.29
|
$ 7.53
|
$ 7.99
|
| Number of stock options, outstanding |
1,657,081
|
2,205,290
|
1,962,400
|
2,374,581
|
| Number of stock options, exercisable |
958,748
|
931,248
|
|
|
| Weighted average remaining life, outstanding |
7 years 4 months 28 days
|
8 years 7 months 2 days
|
|
|
| Weighted average remaining life, exercisable |
7 years 3 months 29 days
|
8 years 3 months 25 days
|
|
|
| Stock Option 1 |
|
|
|
|
| Exercise price |
$ 0.80
|
$ 0.80
|
|
|
| Number of stock options, outstanding |
577,081
|
582,081
|
|
|
| Weighted average remaining life, outstanding |
6 years 3 months
|
7 years 3 months
|
|
|
| Stock Option 2 |
|
|
|
|
| Exercise price |
$ 3.00
|
$ 3.00
|
|
|
| Number of stock options, outstanding |
0
|
|
|
|
| Stock Option 3 |
|
|
|
|
| Exercise price |
$ 5.25
|
$ 5.25
|
|
|
| Number of stock options, outstanding |
380,000
|
380,000
|
|
|
| Weighted average remaining life, outstanding |
7 years 11 months 26 days
|
8 years 11 months 26 days
|
|
|
| Stock Option 4 |
|
|
|
|
| Exercise price |
$ 8.75
|
$ 8.75
|
|
|
| Number of stock options, outstanding |
0
|
|
|
|
| Stock Option 5 |
|
|
|
|
| Exercise price |
$ 11.52
|
$ 11.52
|
|
|
| Number of stock options, outstanding |
0
|
13,209
|
|
|
| Weighted average remaining life, outstanding |
|
9 years 10 months 10 days
|
|
|
| Stock Option 6 |
|
|
|
|
| Exercise price |
$ 12
|
$ 12
|
|
|
| Number of stock options, outstanding |
700,000
|
700,000
|
|
|
| Weighted average remaining life, outstanding |
8 years 14 days
|
9 years 14 days
|
|
|
| Stock Option 7 |
|
|
|
|
| Exercise price |
$ 13.49
|
$ 13.49
|
|
|
| Number of stock options, outstanding |
0
|
250,000
|
|
|
| Weighted average remaining life, outstanding |
|
9 years 1 month 17 days
|
|
|
| Stock Option 8 |
|
|
|
|
| Exercise price |
$ 13.89
|
$ 13.89
|
|
|
| Number of stock options, outstanding |
0
|
280,000
|
|
|
| Weighted average remaining life, outstanding |
|
9 years 2 months 8 days
|
|
|