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Property, Plant and Equipment - Additional Information (Details) - CAD ($)
$ in Thousands
 3 Months Ended
Jun. 30, 2026
Jun. 30, 2025
Property Plant And Equipment [Line Items]    
Depreciation of property, plant and equipment $ 5,351 $ 4,753
Location, Statement of Income, Balance [Axis]: us-gaap:CostOfGoodsAndServicesSold    
Property Plant And Equipment [Line Items]    
Depreciation of property, plant and equipment 4,211 4,201
Location, Statement of Income, Balance [Axis]: us-gaap:SellingGeneralAndAdministrativeExpense    
Property Plant And Equipment [Line Items]    
Depreciation of property, plant and equipment $ 1,140 $ 552