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Share-based payment arrangements - Additional information (Details)
$ / shares in Units, $ / shares in Units, $ in Millions, $ in Millions
 12 Months Ended
Dec. 31, 2024
CAD ($)
shares
tranche
$ / shares
Dec. 31, 2023
CAD ($)
shares
$ / shares
Dec. 31, 2024
USD ($)
shares
Dec. 31, 2023
USD ($)
shares
$ / shares
Dec. 31, 2022
shares
Disclosure of terms and conditions of share-based payment arrangement [line items]          
Number of share options granted (in shares) 1,288,263 1,054,431      
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) 2,395,869 3,451,734      
Number of share purchase options vested and exercisable (in shares) 529,425 1,539,960      
Weighted average exercise price of share purchase options vested and exercisable (CDN per share) | $ / shares $ 14.01 $ 10.26      
Weighted average share price at date of options exercised (CDN per share) | $ / shares 18.36 15.73      
Weighted average fair value per equity instrument granted (CDN per share) | $ / shares $ 5.11 $ 5.36      
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) 344,839        
Common shares purchased (in shares) 144,000 418,000      
Market value | $ $ 2.7 $ 6.1      
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%        
Weighted average fair value per equity instrument granted (CDN per share) | $ / shares $ 14.73 $ 14.74      
Number of common shares equity instruments exercise into once vested (in shares) 1        
Number of share options granted in share-based payment arrangement (in shares) 447,136 383,427      
Number of share purchase options vested and exercisable (in shares)     0 0  
Number of shares outstanding     680,249 480,825 328,677
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) 186,117 222,144      
Number of shares outstanding     0 251,943 566,740
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) 186,117 222,144      
Deferred units          
Disclosure of terms and conditions of share-based payment arrangement [line items]          
Number of shares outstanding     388,571 405,051  
Liabilities from share-based payment transactions | $     $ 5.8 $ 5.3  
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) 411,870 421,502      
Number of shares outstanding     974,302 689,175 342,670
Number of shares authorized for issuance (in shares) 3,126,000        
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]          
Weighted average fair value per equity instrument granted (CDN per share) | (per share) $ 9.86     $ 22.39  
Number of share options granted in share-based payment arrangement (in shares) 397,933 421,502      
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) 13,937 0