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v3.22.2

Share capital - Authorized unlimited common shares, no par value (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended | 6 Months Ended | 12 Months Ended
--- | --- | --- | ---
May 31, 2022 | Feb. 28, 2022 | May 31, 2021 | Feb. 28, 2021 | May 31, 2022 | Nov. 30, 2021
Class of Stock [Line Items] |  |  |  |  |  |
Unlimited common shares authorized |  |  |  |  | Unlimited | Unlimited
Common Stock, No Par Value | $ 0 |  |  |  | $ 0 | $ 0
Joint venture contribution |  | $ 51 |  |  |  |
Share capital |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Beginning balance, Number of shares |  | 145,009,811 |  |  | 145,009,811 |
Beginning balance, Ascribed value |  | $ 180,820 |  |  | $ 180,820 |
Exercise of options, Number of shares | 276,961 | 31,674 | 232,000 | 76,635 | 328,635 |
Exercise of options, Ascribed value |  |  |  |  | $ 76 |
Restricted share units, Number of shares | 110,000 | 391,332 |  |  | 501,332 |
Restricted share units, Ascribed value |  |  |  |  | $ 763 |
Joint venture equity contribution (note 3(b)), Number of shares |  | 31,469 |  |  | 31,469 |
Joint venture contribution | $ 51 | $ 51 |  |  | $ 51 |
Ending balance, Number of shares | 145,871,247 |  |  |  | 145,871,247 | 145,009,811
Ending balance, Ascribed value | $ 181,710 |  |  |  | $ 181,710 | $ 180,820

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