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Income Tax - Summary of Unused Loss Carry-forward (Detail) - Dec. 31, 2022 $ in Thousands, $ in Thousands | TWD ($) | USD ($)
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Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused loss carry-forward | $ 2,044,771 | $ 66,540
2023 [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused loss carry-forward | 195,332 | 6,356
2024 [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused loss carry-forward | 172,926 | 5,627
2025 [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused loss carry-forward | 182,921 | 5,953
2026 [member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused loss carry-forward | 279,553 | 9,097
2027 and thereafter [Member] |  |
Disclosure of temporary difference, unused tax losses and unused tax credits [line items] |  |
Unused loss carry-forward | $ 1,214,039 | $ 39,507

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- Definition The amount of deferred tax liabilities net of deferred tax assets, when the absolute amount of deferred tax liabilities is greater than the absolute amount of deferred tax assets. [Refer: Deferred tax assets; Deferred tax liabilities] + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 12 -IssueDate 2022-03-24 -Paragraph 81 -Subparagraph g -Clause i -URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=12&code=ifrs-tx-2022-en-r&anchor=para_81_g_i&doctype=Standard -URIDate 2022-03-24 + Details
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