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Finance Costs - Summary Of Information About Finance Costs (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Apr. 30, 2023
Apr. 30, 2022
Apr. 30, 2021
Finance Costs [Abstract]      
Interest on bank borrowings $ 769 $ 0 $ 0
Interest on amount due to a non-controlling shareholder 426 0 0
Finance costs $ 1,195 $ 0 [1] $ 0 [1]
[1] The comparative consolidated financial statements have been re-presented from Hong Kong dollar to US$ to reflect the Company’s change in presentation currency. See note 1.