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Other Income - Summary Of Other Income (Detail) - USD ($)
$ in Thousands
 12 Months Ended
Apr. 30, 2023
Apr. 30, 2022
Apr. 30, 2021
Disclosure Of Detailed Information Of Other Income [Line Items]      
Bank and other interest income $ 15,945 $ 743 $ 18
Government grant 56 117 152
Others 51 7 1
Total $ 16,052 $ 867 [1] $ 171 [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.