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Share capital and warrants - Additional Information (Details) $ / shares in Units, $ in Millions | Mar. 17, 2023 CAD ($) | Dec. 31, 2023 $ / shares shares | Mar. 17, 2023 $ / shares shares | Mar. 17, 2023 $ / shares shares | Mar. 16, 2023 $ / shares | Mar. 16, 2023 $ / shares | Dec. 31, 2022 $ / shares | Dec. 31, 2021 $ / shares
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Share capital and warrants |  |  |  |  |  |  |  |
Warrants exercise price | (per share) |  | $ 12.93 | $ 10.70 |  | $ 18.00 |  | $ 17.86 | $ 30.00
Number of warrants to purchase common stock |  |  | 1 | 1 |  |  |  |
Increase in fair value of amended share purchase warrants classified as equity instruments | $ | $ 4.5 |  |  |  |  |  |  |
Brokered private placement |  |  |  |  |  |  |  |
Share capital and warrants |  |  |  |  |  |  |  |
Warrants exercise price | $ / shares |  | $ 14.75 |  | $ 14.75 |  | $ 22.80 |  |
Number of warrants to purchase common stock |  | 1 |  |  |  |  |  |
Non-brokered private placement |  |  |  |  |  |  |  |
Share capital and warrants |  |  |  |  |  |  |  |
Warrants exercise price | (per share) |  | $ 10.70 | $ 10.70 |  | $ 18.00 |  |  |
Number of warrants to purchase common stock |  | 1 |  |  |  |  |  |

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