v3.25.4
Shareholders' Equity - Stock-based payments - Assumptions Options (Details)
$ in Millions
 12 Months Ended
Dec. 31, 2025
$ / shares
Dec. 31, 2025
USD ($)
shares
Y
Dec. 31, 2024
$ / shares
Dec. 31, 2024
USD ($)
shares
Y
Dec. 31, 2025
USD ($)
shares
Dec. 31, 2024
USD ($)
shares
Mar. 07, 2018
shares
Share-Based Compensation Expenses              
Aggregate number of common shares | shares             9,700,876
Risk-free interest rate   2.71%   3.08%      
Expected dividend yield   0.94%   1.20%      
Expected price volatility of the Company's common shares   26.10%   26.40%      
Expected life of the option | Y   4   4      
Forfeiture rate   0.00%   0.00%      
Weighted average life   3 years 3 months 10 days          
Stock options outstanding, beginning of year (in shares) | shares   632,380   669,201      
Granted (in shares) | shares   16,345   45,396      
Exercised (in shares) | shares   (110,917)   (71,864)      
Forfeited (in shares) | shares   (2,000)   (10,353)      
Stock options outstanding, end of the year (in shares) | shares   535,808   632,380      
Exercisable stock options, end of the year (in shares) | shares         446,565 524,919  
Stock options outstanding, beginning of year (in dollars per share) | $ / shares $ 121.36   $ 111.76        
Granted (in dollars per share) | $ / shares 225.87   167.57        
Exercised (in dollars per share) | $ / shares 97.44   52.67        
Forfeited (in dollars per share) | $ / shares 168.43   180.58        
Stock options outstanding, end of year (in dollars per share) | $ / shares 129.32   121.36        
Exercisable stock options, end of the year (in dollars per share) | $ / shares 118.7   110.82        
Stock options              
Share-Based Compensation Expenses              
Term of options   10 years   10 years      
Maximum percentage of common shares issued to single insider participant under compensation plan within one year         5.00%    
Vesting period   5 years   5 years      
Weighted average fair value per stock option | $         $ 0.6 $ 1.7  
Weighted average fair value per stock option (in dollars per share) | $ / shares $ 51.1   $ 38.06        
Expenses related to stock options | $   $ 1.0   $ 1.1      
Capitalized to royalty, stream and working interest, net | $   $ 0.1   $ 0.2      
Total unrecognized non-cash stock-based compensation expense | $         $ 1.3 $ 2.6  
Weighted average life   2 years 4 months 24 days   2 years 6 months      
Stock options | Maximum              
Share-Based Compensation Expenses              
Term of options   10 years