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Operating Lease Arrangements - Summary of Future Minimum Lease Payments of Non-cancellable Operating Lease Commitments (Detail) - Dec. 31, 2017 $ in Thousands, $ in Thousands	TWD ($)	USD ($)
Disclosure of finance lease and operating lease by lessee [line items]
Future minimum lease payments of non-cancellable operating lease commitments	$ 1,104,666	$ 37,269
Less than 1 year [member]
Disclosure of finance lease and operating lease by lessee [line items]
Future minimum lease payments of non-cancellable operating lease commitments	246,026	8,300
1-5 years [member]
Disclosure of finance lease and operating lease by lessee [line items]
Future minimum lease payments of non-cancellable operating lease commitments	439,408	14,825
More than 5 years [member]
Disclosure of finance lease and operating lease by lessee [line items]
Future minimum lease payments of non-cancellable operating lease commitments	$ 419,232	$ 14,144

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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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- Definition

The amount of future minimum lease payments payable under non-cancellable operating leases. Minimum lease payments are payments over the lease term that the lessee is or can be required to make, excluding contingent rent, costs for services and taxes to be paid by, and reimbursed to, the lessor, together with: (a) for a lessee, any amounts guaranteed by the lessee or by a party related to the lessee; or (b) for a lessor, any residual value guaranteed to the lessor by: (i) the lessee; (ii) a party related to the lessee; or (iii) a third party unrelated to the lessor that is financially capable of discharging the obligations under the guarantee.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Note Expiry date 2019-01-01
-Name IAS
-Number 17
-IssueDate 2017-01-01
-Paragraph 35
-Subparagraph a
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IAS&num=17&date=2017-03-02&anchor=para_35_a&doctype=Standard&book=B
-URIDate 2017-03-09

+ Details

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