Property, Plant and Equipment - Additional Information (Details) - CAD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2024	Dec. 31, 2023
Property Plant And Equipment [Line Items]
Depreciation of property, plant and equipment			$ 15,570	$ 22,485
Costs Recorded in Cost of Goods Sold
Property Plant And Equipment [Line Items]
Depreciation of property, plant and equipment	$ 4,298	$ 5,091	13,554	19,589
Selling, General and Administrative Expenses
Property Plant And Equipment [Line Items]
Depreciation of property, plant and equipment	$ 644	$ 826	$ 2,016	$ 2,896