Financial Instruments - Additional Information (Detail) $ in Thousands	12 Months Ended
Apr. 30, 2023 USD ($) Customers	Apr. 30, 2022 USD ($)	Apr. 30, 2021 USD ($)
Disclosure of detailed information about financial instruments [line items]
Concentration of credit risk commission receivable	46.00%	26.00%
Concentration of credit risk commission receivable number of major customers \| Customers	5
Concentration of credit risk accounts receivable	16.00%	66.00%
Concentration of credit risk accounts receivable number of major customers \| Customers	5
Allowance account for credit losses of financial assets	$ 0	$ 0
Borrowings carrying amount	50,803
Repayable within 1 Year [Member]
Disclosure of detailed information about financial instruments [line items]
Unsecured bank loans received	3,251
Repayable Within 1 to 6 Year [Member]
Disclosure of detailed information about financial instruments [line items]
Secured bank loans received	52,424
Financial assets at fair value through profit or loss, category [member]
Disclosure of detailed information about financial instruments [line items]
Gains (losses) recognised in profit or loss attributable to change in unrealised gains or losses for assets held at end of period, fair value measurement	350	188	$ 1,952
Transfer from Level 2 to Level 3		796
Accounts receivable arising from the SpiderNet ecosystem solutions business
Disclosure of detailed information about financial instruments [line items]
Gain on recovery of loans and advances previously written off	$ 2	$ 20
Market risk [member]
Disclosure of detailed information about financial instruments [line items]
Percentage of reasonably possible increase in unobservable input, entity's own equity instruments	3.00%	3.00%	3.00%
Percentage of reasonably possible decrease in unobservable input, entity's own equity instruments	3.00%	3.00%	3.00%
Increase (decrease) in fair value measurement due to reasonably possible increase decrease in unobservable input, entity's own equity instruments	$ 15	$ 335	$ 823
Interest rate risk [member]
Disclosure of detailed information about financial instruments [line items]
Borrowings, interest rate basis	0.0050
Increase decrease in fair value measurement due to reasonably possible increase decrease in unobservable input borrowings	$ 139	$ 275

Borrowing interest rate basis.

No definition available.

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Balance Type:	na
Period Type:	duration

- Definition

Concentration of credit risk accounts receivable.

+ References

No definition available.

+ Details

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Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Concentration of credit risk accounts receivable number of major customers.

+ References

No definition available.

+ Details

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Namespace Prefix:	hkd_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Concentration of credit risk commission receivable.

+ References

No definition available.

+ Details

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Namespace Prefix:	hkd_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

Concentration of credit risk commission receivable number of major customers.

+ References

No definition available.

+ Details

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Namespace Prefix:	hkd_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

- Definition

Increase decrease in fair value measurement due to reasonably possible increase decrease in unobservable input borrowings.

+ References

No definition available.

+ Details

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Namespace Prefix:	hkd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

Increase (decrease) in fair value measurement due to reasonably possible increase decrease in unobservable input, entity's own equity instruments.

+ References

No definition available.

+ Details

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Namespace Prefix:	hkd_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The amount of an allowance account used to record impairments to financial assets due to credit losses. [Refer: Financial assets]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2023-01-01
-Name IFRS
-Number 7
-IssueDate 2022-03-24
-Paragraph 16
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=7&code=ifrs-tx-2017-en-b&anchor=para_16&doctype=Standard&book=b
-URIDate 2022-03-24

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of outstanding funds that the entity is obligated to repay.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_55&doctype=Standard
-URIDate 2022-03-24

+ Details

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Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with members defined in one or many axes of the table.

+ References

No definition available.

+ Details

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Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

- Definition

The gain on the recovery of loans and advances previously written off.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 85
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_85&doctype=Standard
-URIDate 2022-03-24

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The gains (losses) recognised in profit or loss for assets measured at fair value that are attributable to the change in unrealised gains or losses relating to those assets held at the end of the reporting period. [Refer: At fair value [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 13
-IssueDate 2022-03-24
-Paragraph 93
-Subparagraph f
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2022-en-r&anchor=para_93_f&doctype=Standard
-URIDate 2022-03-24

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	duration

- Definition

The percentage of a reasonably possible decrease in an unobservable input used in fair value measurement of the entity's own equity instruments.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IFRS
-Number 13
-IssueDate 2022-03-24
-Paragraph 93
-Subparagraph h
-Clause ii
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2022-en-r&anchor=para_93_h_ii&doctype=Standard
-URIDate 2022-03-24

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The percentage of a reasonably possible increase in an unobservable input used in fair value measurement of the entity's own equity instruments.

+ References

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	dtr-types:percentItemType
Balance Type:	na
Period Type:	instant

- Definition

The amount of loans received from banks that have been secured by collateral. [Refer: Loans received]

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2022-03-24
-Paragraph 112
-Subparagraph c
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2022-03-24

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Definition

The amount of transfers of assets into Level 3 of the fair value hierarchy. [Refer: Level 3 of fair value hierarchy [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 13
-IssueDate 2022-03-24
-Paragraph 93
-Subparagraph e
-Clause iv
-URI https://taxonomy.ifrs.org/xifrs-link?type=IFRS&num=13&code=ifrs-tx-2022-en-r&anchor=para_93_e_iv&doctype=Standard
-URIDate 2022-03-24

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

- Definition

The amount of loans received from banks that have not been secured by collateral. [Refer: Loans received]

+ References

+ Details

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Namespace Prefix:	ifrs-full_
Data Type:	xbrli:monetaryItemType
Balance Type:	credit
Period Type:	instant

- Details

Name:	hkd_PeriodAxis=hkd_RepayableWithinOneYearMember
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- Details

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- Details

Name:	ifrs-full_CategoriesOfFinancialAssetsAxis=ifrs-full_FinancialAssetsAtFairValueThroughProfitOrLossCategoryMember
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- Details

Name:	ifrs-full_ClassesOfAssetsAxis=hkd_AccountsReceivableArisingFromTheSpiderNetEcosystemSolutionsBusinessMember
Namespace Prefix:
Data Type:	na
Balance Type:
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- Details

Name:	ifrs-full_TypesOfRisksAxis=ifrs-full_MarketRiskMember
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- Details

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