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Other Gains And Losses, Net - Summary Of Other Gains And Losses Net (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Apr. 30, 2023 | Apr. 30, 2022 | Apr. 30, 2021
Disclosure Of Detailed Information Of Other Gains And Losses [Line Items] |  |  |  |  |
Net exchange (loss) gain | $ 151 | $ 589 |  | $ (48) |
Recovery of accounts and other receivables written off | 2 | 20 |  | 9 |
Total | $ 153 | $ 609 | [1] | $ (39) | [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.

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- Definition The amount of exchange differences recognised in profit or loss that arise from foreign currency transactions, excluding those arising on financial instruments measured at fair value through profit or loss in accordance with IFRS 9. [Refer: At fair value [member]; Financial instruments, class [member]] + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 21 -IssueDate 2022-03-24 -Paragraph 52 -Subparagraph a -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=21&code=ifrs-tx-2022-en-r&anchor=para_52_a&doctype=Standard -URIDate 2022-03-24 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Name IAS -Number 1 -IssueDate 2022-03-24 -Paragraph 35 -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2022-en-r&anchor=para_35&doctype=Standard -URIDate 2022-03-24 + Details
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