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Note 13 - Share-based Compensation (Tables) | 12 Months Ended
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Nov. 30, 2023
Notes Tables |
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block] |
|  | Years ended November 30, |
|  | 2023 |  |  | 2022 |  |  | 2021 |
Stock options |  | $ | 4,594 |  |  | $ | 4,642 |  |  | $ | 4,721 |
Performance share unit plan |  |  | 3,910 |  |  |  | 3,345 |  |  |  | 3,278 |
Deferred share unit plan |  |  | 227 |  |  |  | 227 |  |  |  | 236 |
|  | $ | 8,731 |  |  | $ | 8,214 |  |  | $ | 8,235 |
Share-Based Payment Arrangement, Option, Activity [Table Text Block] |
|  | Number of stock options |  |  | Weighted- average exercise price per share |  |  | Weighted- average remaining contractual term (years) |  |  | Aggregate intrinsic value |
November 30, 2022 |  |  | 7,717,413 |  |  | $ | 6.18 |  |  |  |  |  |  |  |  |
Granted |  |  | 2,291,800 |  |  |  | 5.71 |  |  |  |  |  |  |  |  |
Exercised |  |  | (1,914,311 | ) |  |  | (3.73 | ) |  |  |  |  |  |  |  |
Cancelled |  |  | (488,702 | ) |  |  | (7.08 | ) |  |  |  |  |  |  |  |
November 30, 2023 |  |  | 7,606,200 |  |  | $ | 6.59 |  |  |  | 2.38 |  |  | $ | 505 |
Vested and exercisable as of November 30, 2023 |  |  | 3,881,316 |  |  | $ | 6.75 |  |  |  | 1.28 |  |  | $ | 505 |
Schedule of Share-Based Payment Award, Stock Options, Valuation Assumptions [Table Text Block] |
|  | Years ended November 30, |
|  | 2023 |  |  | 2022 |  |  | 2021 |
Weighted-average assumptions used to value stock option awards: |  |  |  |  |  |  |  |  |  |  |  |
Expected volatility |  |  | 48.4 | % |  |  | 46.5 | % |  |  | 47.2 | %
Expected term of options (years) |  |  | 4 |  |  |  | 4 |  |  |  | 4 |
Expected dividend rate |  |  | — |  |  |  | — |  |  |  | — |
Risk-free interest rate |  |  | 3.85 | % |  |  | 1.13 | % |  |  | 0.3 | %
Expected forfeiture rate |  |  | 2.8 | % |  |  | 2.9 | % |  |  | 3.0 | %
Weighted-average grant-date fair value |  | $ | 2.40 |  |  | $ | 2.49 |  |  | $ | 3.63 |
Intrinsic value of options exercised |  | $ | 2,339 |  |  | $ | 5,723 |  |  | $ | 12,543 |
Cash received from options exercised |  | $ | — |  |  | $ | — |  |  | $ | — |
Schedule of Nonvested Performance-Based Units Activity [Table Text Block] |
|  | Number of PSU awards |  |  | Weighted- average grant day fair value per award |  |  | Aggregate intrinsic value |
November 30, 2022 |  |  | 1,257,200 |  |  | $ | 7.65 |  |  |  |  |
Granted |  |  | 605,500 |  |  |  | 5.77 |  |  |  |  |
Retention awards granted |  |  | 181,700 |  |  |  | 5.64 |  |  |  |  |
Expired |  |  | (438,900 | ) |  |  | (6.96 | ) |  |  |  |
November 30, 2023 |  |  | 1,605,500 |  |  | $ | 6.89 |  |  | $ | 760 |
Other PSU-related Information [Table Text Block] |
|  | Years ended November 30, |
|  | 2023 |  |  | 2022 |  |  | 2021 |
Performance multiplier on PSUs vested |  |  | — | % |  |  | 93 | % |  |  | 150 | %
Common shares issued |  |  | — |  |  |  | 430,045 |  |  |  | 574,379 |
Total fair value of common shares issued |  | $ | — |  |  | $ | 2,903 |  |  | $ | 5,723 |
Withholding tax paid on PSUs vested |  | $ | — |  |  | $ | 2,122 |  |  | $ | 731 |

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