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Schedule of Provision for Income Taxes (Detail) - CAD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2021
Reconciliation of changes in deferred tax liability (asset) [abstract]      
Earnings before income taxes $ 154,559 $ 265,779  
Federal and provincial statutory rates 24.00% 24.00% 15.00%
Tax at statutory rates $ 37,094 $ 63,787  
Adjusted for the effect of:      
Non-deductible expenses 4,422 2,426  
Non-taxable capital gains (367) (2,551)  
Gain on acquisition   (6,222)  
Impact of foreign tax rates (895) (2,450)  
Withholding taxes 356 337  
Taxes related to prior years (3,036) (4,945)  
Tax assets not recognized 5,655 8,629  
Deferred tax assets recognized   (82,476)  
Income taxes $ 43,229 $ (23,465)