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Share-based payment arrangements - Additional information (Details) $ / shares in Units, $ / shares in Units, $ in Thousands, $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2023 CAD ($) shares tranche $ / shares | Dec. 31, 2022 CAD ($) shares $ / shares | Dec. 31, 2023 USD ($) shares | Dec. 31, 2022 USD ($) shares $ / shares | Dec. 31, 2021 shares
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |
Number of share options granted (in shares) | 1,054,431 | 1,265,672 |  |  |
Employee stock option plan |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |
Term of employee option plan | 5 years |  |  |  |
Number of tranches | tranche | 3 |  |  |  |
Vesting percentage on first anniversary | 33.33% |  |  |  |
Vesting percentage on second anniversary | 33.33% |  |  |  |
Vesting percentage on third anniversary | 33.33% |  |  |  |
Number of share options available to grant under the plan (in shares) | 3,451,734 | 4,043,166 |  |  |
Number of share purchase options vested and exercisable (in shares) | 1,539,960 | 1,834,985 |  |  |
Weighted average exercise price of share purchase options vested and exercisable (CDN per share) | $ / shares | $ 10.26 | $ 8.92 |  |  |
Weighted average share price at date of options exercised (CDN per share) | $ / shares | 15.73 | 13.64 |  |  |
Weighted average fair value per equity instrument granted (CDN per share) | $ / shares | $ 5.36 | $ 5.64 |  |  |
Restricted share unit plan |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |
Maximum number of shares reserved for issue under options (in shares) |  |  | 5,000,000 |  |
Number of share purchased held in trust share-based payment arrangement (in shares) | 762,819 |  |  |  |
Common shares purchased (in shares) | 418,000 | 1,421,373 |  |  |
Market value | $ | $ 6,059 | $ 17,623 |  |  |
Restricted share units with no performance criteria |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |
Vesting percentage on first anniversary | 33.33% |  |  |  |
Vesting percentage on second anniversary | 33.33% |  |  |  |
Vesting percentage on third anniversary | 33.33% |  |  |  |
Number of share options granted in share-based payment arrangement (in shares) | 383,427 | 176,414 |  |  |
Weighted average fair value per equity instrument granted (CDN per share) | $ / shares | $ 14.74 | $ 14.44 |  |  |
Number of common shares equity instruments exercise into once vested (in shares) | 1 |  |  |  |
Number of share purchase options vested and exercisable (in shares) |  |  | 0 | 17,371 |
Number of shares outstanding |  |  | 480,825 | 328,677 | 471,762
Restricted share units with performance criteria |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |
Term of employee option plan | 3 years |  |  |  |
Number of share options granted in share-based payment arrangement (in shares) | 222,144 | 229,979 |  |  |
Number of shares outstanding |  |  | 251,943 | 566,740 | 908,377
Restricted share units with performance criteria | Bottom of range |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |
Performance target award (range) | 0.00% |  |  |  |
Restricted share units with performance criteria | Top of range |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |
Performance target award (range) | 200.00% |  |  |  |
Restricted share units with performance criteria new issues |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |
Number of share options granted in share-based payment arrangement (in shares) | 0 |  |  |  |
Restricted shares with performance criteria, performance criteria met |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |
Number of share options granted in share-based payment arrangement (in shares) | 222,144 | 229,979 |  |  |
Deferred units |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |
Number of shares outstanding |  |  | 405,051 | 335,829 |
Liabilities from share-based payment transactions | $ |  |  | $ 5,254 | $ 2,803 |
Performance share units |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |
Number of share options granted in share-based payment arrangement (in shares) | 421,502 | 616,920 |  |  |
Number of shares outstanding |  |  | 689,175 | 342,670 | 278,020
Performance share units | Bottom of range |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |
Performance target award (range) | 0.00% |  |  |  |
Performance share units | Top of range |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |
Performance target award (range) | 200.00% |  |  |  |
Performance share units new issues |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |
Number of share options granted in share-based payment arrangement (in shares) | 421,502 | 352,837 |  |  |
Weighted average fair value per equity instrument granted (CDN per share) | (per share) | $ 22.39 |  |  | $ 28.66 |
Performance share unit, performance criteria met |  |  |  |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |  |  |  |
Number of share options granted in share-based payment arrangement (in shares) | 0 | 264,083 |  |  |
Number of shares authorized for issuance (in shares) | 3,126,000 |  |  |  |

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