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Income Tax - Deferred taxes (Details) - CAD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Deferred Tax Assets    
Disclosure Of Income Tax Assets and Liabilities [Line Items]    
Deferred income tax assets / (liabilities) $ 8,592 $ 448
Deferred Tax Liabilities    
Disclosure Of Income Tax Assets and Liabilities [Line Items]    
Deferred income tax assets / (liabilities) (8,592) (448)
Current convertible notes payable | Deferred Tax Liabilities    
Disclosure Of Income Tax Assets and Liabilities [Line Items]    
Deferred income tax assets / (liabilities) (5,659)  
Plant and equipment | Deferred Tax Liabilities    
Disclosure Of Income Tax Assets and Liabilities [Line Items]    
Deferred income tax assets / (liabilities) (2,933) (448)
Non-capital loss | Deferred Tax Assets    
Disclosure Of Income Tax Assets and Liabilities [Line Items]    
Deferred income tax assets / (liabilities) 6,823 $ 448
Current financial derivative liability - convertible notes | Deferred Tax Assets    
Disclosure Of Income Tax Assets and Liabilities [Line Items]    
Deferred income tax assets / (liabilities) $ 1,769