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Changes In Fair Value On Financial Assets Measured At FVTPL - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Apr. 30, 2023 | Apr. 30, 2022
Disclosure Of Changes In Fair Value On Financial Assets Measured At Fair Value Through Profit Or Loss [Line Items] |  |
Disposal of financial asset measured at FVTPL | $ 25,650 | $ 32,520
Gain on disposal | $ 15,036 | $ 16,752

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- Definition Disclosure of changes in fair value on financial assets measured at fair value through profit or loss. + References No definition available. + Details
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Namespace Prefix: | hkd_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

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- Definition Disposal of financial asset measured at fair value of profit or loss. + References No definition available. + Details
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Namespace Prefix: | hkd_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

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- Definition Gain on disposal of financial assets. + References No definition available. + Details
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Namespace Prefix: | hkd_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration