v3.25.4
Share-based compensation - Performance-Based Restricted stock units - Changes in the PRSUs (Details)
12 Months Ended
Dec. 31, 2025
D
tranche
shares
Dec. 31, 2024
shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Number of trading days | D 30  
Performance-Based Restricted Stock Units    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Balance as at the beginning 86,607 38,713
PRSUs granted (in shares) 51,537 47,894
Balance as at the end (none of which are vested) 138,144 86,607
Performance-Based Restricted Stock Units | 2013 Equity incentive plan | Officers and directors    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
PRSUs granted (in shares) 138,144  
Number of tranches | tranche 1  
Performance-Based Restricted Stock Units | Minimum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total quantity of PRSUs eligible to vest (as a percentage) 0.00%  
Performance-Based Restricted Stock Units | Maximum [Member]    
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]    
Total quantity of PRSUs eligible to vest (as a percentage) 200.00%