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Accounts receivable - Summary of Accounts and notes receivable (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2020 TWD ($) | Dec. 31, 2020 USD ($) | Dec. 31, 2019 TWD ($) | Jan. 01, 2019 TWD ($)
--- | --- | --- | --- | ---
Disclosure of financial assets [Line Items] |  |  |  |
Accounts receivable | $ 5,364,156 | $ 191,031 | $ 4,452,904 |
Accounts receivable [member] |  |  |  |
Disclosure of financial assets [Line Items] |  |  |  |
Accounts receivable | 5,365,776 |  | 4,454,255 | $ 4,745,693
Loss allowance [member] |  |  |  |
Disclosure of financial assets [Line Items] |  |  |  |
Accounts receivable | $ (1,620) |  | $ (1,351) |

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- Definition The amount of current trade receivables. [Refer: Trade receivables] + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 78 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_78_b&doctype=Standard -URIDate 2020-01-01 Reference 2: http://www.xbrl.org/2003/role/exampleRef -Name IAS -Number 1 -IssueDate 2020-01-01 -Paragraph 68 -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2020-en-r&anchor=para_68&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition Line items represent concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes of the table. + References No definition available. + Details
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- Details
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