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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