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Effects on initial application of IFRS 16 - Additional Information (Details) $ in Thousands, $ in Thousands | 12 Months Ended |  |  |
--- | --- | --- | --- | ---
Dec. 31, 2019 TWD ($) | Dec. 31, 2020 TWD ($) | Dec. 31, 2020 USD ($) | Jan. 01, 2019 TWD ($) | Dec. 31, 2018
Statement [line items] |  |  |  |  |
Right-of-use asset | $ 687,068 | $ 859,069 | $ 30,594 |  |
Lease liability | 692,951 | $ 870,495 |  |  |
Rent Expense | $ 28,126 |  |  |  |
Bottom of range [member] |  |  |  |  |
Statement [line items] |  |  |  |  |
Incremental borrowing interest rate |  |  |  | 1.7895% | 1.7895%
Top of range [member] |  |  |  |  |
Statement [line items] |  |  |  |  |
Incremental borrowing interest rate |  |  |  | 3.9474% | 3.9474%
Effects of adopting new standards [member] |  |  |  |  |
Statement [line items] |  |  |  |  |
Right-of-use asset |  |  |  | $ 898,387 |
Lease liability |  |  |  | 884,275 |
Lease assets |  |  |  | 31,904 |
Lease obligations payable |  |  |  | $ 17,792 |

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- Definition The amount of liabilities related to the entity's leases. Lease is a contract, or part of a contract, that conveys the right to use an underlying asset for a period of time in exchange for consideration. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2020-01-01 -Paragraph 47 -Subparagraph b -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2020-en-r&anchor=para_47_b&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The amount of assets that represent a lessee's right to use an underlying asset for the lease term. Underlying asset is an asset that is the subject of a lease, for which the right to use that asset has been provided by a lessor to a lessee. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2020-01-01 -Paragraph 53 -Subparagraph j -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2020-en-r&anchor=para_53_j&doctype=Standard -URIDate 2020-01-01 + Details
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- Definition The weighted average lessee's incremental borrowing rate applied to lease liabilities recognised in the statement of financial position at the date of initial application of IFRS 16. The incremental borrowing rate is the rate of interest that a lessee would have to pay to borrow over a similar term, and with a similar security, the funds necessary to obtain an asset of a similar value to the right-of-use asset in a similar economic environment. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Name IFRS -Number 16 -IssueDate 2020-01-01 -Paragraph C12 -Subparagraph a -URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IFRS&num=16&code=ifrs-tx-2020-en-r&anchor=para_C12_a&doctype=Appendix&subtype=C -URIDate 2020-01-01 + Details
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- Definition LongtermLeaseObligationsPayable + References No definition available. + Details
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- Definition Operating lease rental expense. + References No definition available. + Details
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- Definition RecognisedAssetsInFinanceLease + References No definition available. + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Details
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