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Stock-based compensation - Share options plan (Details) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2022 CAD ($) shares | Dec. 31, 2021 CAD ($) shares | Dec. 31, 2021 $ / shares shares | Nov. 17, 2021 shares
Number of options |  |  |  |
Exercised (in shares) |  | (125,000) |  |
Weighted-average exercise price $ per share |  |  |  |
Proceeds from options exercised | $ | $ 0 | $ 519 |  |
Share option plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of shares received per stock option (in shares) | 1 |  |  |
Expiration period | 10 years |  |  |
Shares issued or outstanding (in shares) |  | 0 | 0 | 0
Number of options |  |  |  |
Beginning balance (in shares) | 0 | 125,000 |  |
Exercised (in shares) |  | (125,000) |  |
Ending balance (in shares) |  | 0 |  |
Weighted-average exercise price $ per share |  |  |  |
Beginning balance (CAD per share) | $ / shares |  |  | $ 4.16 |
Exercised (CAD per share) | $ / shares |  |  | 4.16 |
Ending balance (CAD per share) | $ / shares |  |  | $ 0 |
Proceeds from options exercised | $ |  | $ 519 |  |
Total intrinsic value of options exercised | $ |  | $ 1,909 |  |

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