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Profit Before Income Tax - Summary of Other Income (Detail) $ in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2022 TWD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 TWD ($) | Dec. 31, 2020 TWD ($)
Analysis of income and expense [abstract] |  |  |  |
Bank deposits | $ 646,407 | $ 21,035 | $ 529,132 | $ 520,783
Contracts with customers | 8,340 | 271 | 13,197 |
Government subsidies | 797,612 | 25,956 | 767,918 | 803,049
Dividends income | 278,381 | 9,059 | 289,852 | 150,715
Other income | $ 1,730,740 | $ 56,321 | $ 1,600,099 | $ 1,474,547

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- Definition The amount of income associated with interest and other financing activities of the entity. + 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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