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v3.22.2

Share capital - Narrative (Details) | 3 Months Ended | 6 Months Ended |  |
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May 31, 2022 USD ($) $ / shares shares | Feb. 28, 2022 USD ($) shares | Feb. 28, 2022 $ / shares | May 31, 2021 USD ($) shares | Feb. 28, 2021 USD ($) $ / shares shares | Feb. 28, 2021 $ / shares | May 31, 2022 USD ($) $ / shares shares | May 31, 2021 USD ($) | May 31, 2022 $ / shares | Nov. 30, 2021 $ / shares shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Number of shares, conversion |  |  |  |  |  |  | 1 |  |  |
Stock-based compensation | $ | $ (503,000) | $ (1,865,000) |  | $ (524,000) | $ (2,148,000) |  |  |  |  |
Non-vested stock options outstanding | 12,187,150 |  |  |  |  |  | 12,187,150 |  |  |
Weighted average exercise price options outstanding | $ / shares | $ 2.50 |  |  |  |  |  | $ 2.50 |  |  |
Proceeds from exercise of options | $ |  |  |  |  |  |  | $ 54,000 | $ 106,000 |  |
Aggregate intrinsic value, vested options | $ | $ 130,000 |  |  | $ 6,800,000 |  |  | 130,000 | 6,800,000 |  |
Aggregate intrinsic value, options exercised | $ |  |  |  |  |  |  | $ 50,000.00 | 710,000 |  |
Share capital |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Common stock committed for issuance | 145,871,247 |  |  |  |  |  | 145,871,247 |  |  | 145,009,811
Exercise of options, Number of shares | 276,961 | 31,674 |  | 232,000 | 76,635 |  | 328,635 |  |  |
Nonvested Options |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Non-vested stock options outstanding | 2,312,838 |  |  |  |  |  | 2,312,838 |  |  |
Weighted average exercise price options outstanding | $ / shares |  |  |  |  |  |  |  |  | $ 2.43 |
Stock option expense not yet recognized | $ | $ 570,000 |  |  |  |  |  | $ 570,000 |  |  |
DSUs |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Stock-based compensation | $ |  |  |  |  |  |  | $ 1,200,000 | 70,000.00 |  |
Granted units |  |  |  |  |  |  | 193,740 |  |  |
Outstanding grants | 1,471,185 |  |  |  |  |  | 1,471,185 |  |  | 1,277,445
RSUs |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Granted units |  |  |  |  |  |  | 758,600 |  |  |
Outstanding grants | 257,268 |  |  |  |  |  | 257,268 |  |  |
Stock option |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Stock options granted, weighted average exercise price | $ / shares |  |  |  |  |  |  | $ 0.85 |  |  |
Non-vested stock options outstanding | 12,187,150 |  |  |  |  |  | 12,187,150 |  |  | 10,539,324
Weighted average exercise price options outstanding | $ / shares | $ 2.50 |  |  |  |  |  | $ 2.50 |  |  | $ 2.54
Exercise of options, Number of shares |  |  |  |  |  |  | 81,674 |  |  |
Proceeds from exercise of options | $ |  |  |  |  |  |  | $ 54,295 |  |  |
Stock options granted |  |  |  |  |  |  | 1,734,500 |  |  |
Weighted-average exercise price | $ / shares |  |  |  |  |  |  | $ 2.21 |  |  |
Employees, consultants and directors |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Stock options granted, expiration period |  | 5 years |  |  |  |  |  |  |  |
Stock options granted | 0 | 1,734,500 |  |  | 3,374,150 |  |  |  |  |
Vesting period |  | 2 years |  |  |  |  |  |  |  |
Weighted-average exercise price | $ / shares |  |  | $ 2.21 |  |  | $ 2.52 |  |  |  |
Stock options granted, weighted average fair value | $ / shares |  |  |  |  | $ 0.84 |  | $ 0.90 |  |  |
Directors, employees and service providers |  |  |  |  |  |  |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |  |  |  |  |  |  |
Stock-based compensation | $ |  |  |  |  |  |  | $ 1,200,000 | $ 2,600,000 |  |

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