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Summary of Significant Accounting Policies - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2019 TWD-USD
Summary Of Significant Accounting Policies [abstract]
Ownership interest percentage in subsidiary, assumption	100.00%
Convenience exchange rate	29.91

X

- Definition

Assumption of investment ownership percentage in subsidiary.

+ References

No definition available.

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X

- Definition

Summary Of Significant Accounting Policies [abstract]

+ References

No definition available.

+ Details

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- Definition

The spot exchange rate at the end of the reporting period. Exchange rate is the ratio of exchange for two currencies. Spot exchange rate is the exchange rate for immediate delivery.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2019-01-01
-Paragraph 112
-Subparagraph c
-URI http://eifrs.ifrs.org/eifrs/xifrs-link?type=IAS&num=1&code=ifrs-tx-2019-en-r&anchor=para_112_c&doctype=Standard
-URIDate 2019-03-27

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