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Schedule of Provision for Income Taxes (Detail) - CAD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Reconciliation of changes in deferred tax liability (asset) [abstract]    
Loss before income taxes $ (14,143) $ (182,782)
Federal and provincial statutory rates 24.00% 24.00%
Tax at statutory rates $ (3,394) $ (43,868)
Adjusted for the effect of:    
Non-deductible expenses 1,146 1,162
Non-taxable capital gains (379) (257)
Impact of foreign tax rates (2,559) (1,474)
Withholding taxes 1,026 937
Taxes related to prior years 1,718 (1,467)
Tax assets not recognized 22,592 37,924
Other   1,647
Income taxes $ 20,150 $ (5,396)