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Share-Based Payments (Tables) | 12 Months Ended
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Feb. 28, 2019
Share-based Payment Arrangement [Abstract] |
Stock option activity |
|  |  |  | 2019 |  |  |  | 2018
|  | Number of stock options |  | Weighted average exercise price |  | Number of stock options |  | Weighted average exercise price
| Outstanding, beginning of period |  |  |  | 2,374,581 |  |  | $ | 7.99 |  |  |  | 1,010,000 |  |  | $ | 0.96 |
| Granted |  |  |  | 39,902 |  |  |  | 9.67 |  |  |  | 2,310,000 |  |  |  | 9.23 |
| Exercised |  |  |  | (20,000 | ) |  |  | 0.80 |  |  |  | (245,034 | ) |  |  | 0.80 |
| Forfeited |  |  |  | (369,583 | ) |  |  | 11.49 |  |  |  | (620,385 | ) |  |  | 4.97 |
| Expired |  |  |  | (62,500 | ) |  |  | 4.80 |  |  |  | (80,000 | ) |  |  | 0.80 |
| Outstanding, end of period |  |  |  | 1,962,400 |  |  | $ | 7.53 |  |  |  | 2,374,581 |  |  | $ | 7.99 |
| Exercisable, end of period |  |  |  | 1,126,664 |  |  | $ | 7.72 |  |  |  | 841,249 |  |  | $ | 6.32 |
Stock options outstanding |
|  |  |  | 2019 |  |  |  | 2018
Exercise price |  | Number of stock options outstanding |  | Weighted average remaining life |  | Number of stock options outstanding |  | Weighted average remaining life
$ | 0.80 |  |  |  | 582,081 |  |  |  | 6.76 |  |  |  | 602,081 |  |  |  | 7.75 |
$ | 3.00 |  |  |  | — |  |  |  | — |  |  |  | 12,500 |  |  |  | 0.25 |
$ | 5.25 |  |  |  | 380,000 |  |  |  | 8.50 |  |  |  | 530,000 |  |  |  | 9.49 |
$ | 8.75 |  |  |  | 26,693 |  |  |  | 10.0 |  |  |  | — |  |  |  | — |
$ | 11.52 |  |  |  | 13,209 |  |  |  | 9.36 |  |  |  | — |  |  |  | — |
$ | 12.00 |  |  |  | 700,000 |  |  |  | 8.54 |  |  |  | 700,000 |  |  |  | 9.54 |
$ | 13.49 |  |  |  | 193,750 |  |  |  | 0.17 |  |  |  | 250,000 |  |  |  | 9.63 |
$ | 13.89 |  |  |  | 66,667 |  |  |  | 0.01 |  |  |  | 280,000 |  |  |  | 9.69 |
| Outstanding, end of period |  |  |  | 1,962,400 |  |  |  | 6.91 |  |  |  | 2,374,581 |  |  |  | 9.05 |
| Exercisable, end of period |  |  |  | 1,126,664 |  |  |  | 5.99 |  |  |  | 841,249 |  |  |  | 7.67 |
Valuation assumptions |
|  | 2019 |  | 2018 |  | 2017
Exercise price |  |  | $ 8.75 to 11.52 |  |  |  | $ 5.25 to 13.89 |  |  | $ | 3.00 |
Risk-free interest rate |  |  | 2.70% to 2.82% |  |  |  | 1.46 to 2.15% |  |  |  | 0.91 | %
Expected dividend yield |  |  | 0 | % |  |  | 0 | % |  |  | 0 | %
Expected volatility |  |  | 78 | % |  |  | 80% to 94% |  |  |  | 122 | %
Expected life |  |  | 6.5 to 7 years |  |  |  | 3 to 6 years |  |  |  | 2 years |
RSU activity |
|  |  |  | 2019 |  |  |  | 2018
|  | Number of units |  | Weighted average fair value price |  | Number of units |  | Weighted average fair value price
| Outstanding, beginning of period |  |  |  | 34,102 |  |  | $ | 13.00 |  |  |  | — |  |  | $ | — |
| Granted |  |  |  | 406,188 |  |  |  | 8.80 |  |  |  | 34,102 |  |  |  | 13.00 |
| Vested |  |  |  | (35,797 | ) |  |  | 13.06 |  |  |  | — |  |  |  | — |
| Forfeited |  |  |  | (1,625 | ) |  |  | 12.31 |  |  |  | — |  |  |  | — |
| Outstanding, end of period |  |  |  | 402,868 |  |  | $ | 8.77 |  |  |  | 34,102 |  |  | $ | 13.00 |

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- Definition Tabular disclosure of number, weighted-average exercise price or conversion ratio, aggregate intrinsic value, and weighted-average remaining contractual term for outstanding options that are fully vested and expected to vest. Includes, but is not limited to, unvested options for which requisite service period has not been rendered but that are expected to vest based on achievement of performance condition, if forfeitures are recognized when they occur. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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