Adjusted cash price per ordinary share.

No definition available.

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- Definition

The fair value, at acquisition date, of the consideration transferred in a business combination. [Refer: Business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2018-01-01
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- Definition

Adjustment to a mid-market consensus (non-binding) price used as a significant Level 3 unobservable input for assets. [Refer: Level 3 of fair value hierarchy [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Name IFRS
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-IssueDate 2018-01-01
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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.

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- Definition

The percentage of voting equity interests acquired in a business combination. [Refer: Business combinations [member]]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-Number 3
-IssueDate 2018-01-01
-Paragraph B64
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/XBRL?type=IFRS&num=3&date=2018-03-01&anchor=para_B64_c&doctype=Appendix&seq=2
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- Definition

The profit (loss) of the combined entity as though the acquisition date for all business combinations that occurred during the year had been as of the beginning of the annual reporting period. [Refer: Business combinations [member]; Profit (loss)]

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Name IFRS
-Number 3
-IssueDate 2018-01-01
-Paragraph B64
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- Definition

The revenue of the combined entity as though the acquisition date for all business combinations that occurred during the year had been as of the beginning of the annual reporting period. [Refer: Business combinations [member]; Revenue]

+ References

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Business Combinations - Additional Information (Detail) $ / shares in Units, $ / shares in Units, $ in Thousands, $ in Thousands	1 Months Ended		12 Months Ended
	May 31, 2018 $ / shares	May 31, 2018 $ / shares	Dec. 31, 2018 USD ($)	Dec. 31, 2018 TWD ($)	Dec. 31, 2018 TWD ($)	May 31, 2016 TWD ($)
Disclosure of subsidiaries [Line Items]
Significant unobservable inputs discount rate			25.00%	25.00%
Revenue from continuing operations			$ 12,978,159	$ 397,261,461
Profit from continuing operations			$ 838,766	$ 25,674,641
TLJ Intertech Inc. [member]
Disclosure of subsidiaries [Line Items]
Percentage of shareholdings acquired by subsidiary			60.00%		60.00%	60.00%
Total consideration was paid to key management personnel and related parties					$ 89,998
TLJ Intertech Inc. [member] \| Related parties [member]
Disclosure of subsidiaries [Line Items]
Total consideration was paid to key management personnel and related parties						$ 41,739
Siliconware Precision Industries Co., Ltd. [member]
Disclosure of subsidiaries [Line Items]
Percentage of shareholdings acquired by subsidiary	100.00%	100.00%	100.00%		100.00%
Total consideration was paid to key management personnel and related parties			$ 5,502,796		$ 168,440,585
Cash consideration \| (per share)	$ 51.2	$ 1.7