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Income Taxes - Summary of Differences and Related Tax Rate (Details) - CAD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jan. 31, 2024
Jan. 31, 2023
Jan. 31, 2024
Jan. 31, 2023
Disclosure Of Income Taxes [Abstract]        
Income taxes (recovery) $ (517) $ 104 $ (749) $ (425)