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Share-based compensation (Narrative) (Details) - CAD ($) | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Weighted average share price | $ 19.56 | $ 16.26
Share-based compensation related to share options | $ 4,200,000 | $ 2,700,000
Deferred share units [Member] |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Weighted average value of deferred share units granted | $ 21.16 | $ 14.71
Restricted share units ("RSU") [Member] |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Weighted average value of restricted share units granted | $ 17.87 | $ 14.26
DSU and RSU [Member] |  |
Disclosure of terms and conditions of share-based payment arrangement [line items] |  |
Share-based compensation | $ 6,200,000 | $ 4,500,000
Closing price of the common shares | $ 18.91 |
Marginal income tax rate | 53.30% |
Employees tax obligations settlement amount related to vested RSU and DSU | $ 3,700,000 | 3,100,000
Employees tax obligations settlement amount related to outstanding RSU and DSU | $ 11,400,000 | $ 11,200,000

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