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Other Income - Summary of Other income (Detail) $ in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2020 TWD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 TWD ($) | Dec. 31, 2018 TWD ($)
Analysis of other income [Abstract] |  |  |  |
Rental income | $ 10,260 |  | $ 9,249 | $ 7,819
Dividend income | 3,229 |  | 585 | 571
Grant income | 7,668 |  | 925 |
Other non-operating income (expenses), net | $ 21,157 | $ 753 | $ 10,759 | $ 8,390

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- Definition The amount of income recognised from rental activities. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 112 -Subparagraph c -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_112_c&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition Analysis of other income. + References No definition available. + Details
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- Definition Dividends income. + References No definition available. + Details
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- Definition Grant Income. + References No definition available. + Details
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- Definition Other non operating income expense. + References No definition available. + Details
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