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Others - Additional Information (Detail) ¥ in Thousands, $ in Thousands, $ in Thousands					1 Months Ended
	Jun. 30, 2020 CNY (¥)	Feb. 10, 2020 TWD ($)	Feb. 10, 2020 USD ($)	Dec. 27, 2019 TWD ($)	Dec. 31, 2013 TWD ($)
Disclosure Detailed Information About Others [Line Items]
Contribution received from Environmental Protection | $				$ 55,062
Procuratorate [Member]
Disclosure Detailed Information About Others [Line Items]
Administrative fine imposed | ¥	¥ 400
Income from fines and penalties | ¥	¥ 344
Original Fine [Member]
Disclosure Detailed Information About Others [Line Items]
Administrative fine imposed | $					$ 102,014
New Fine [Member]
Disclosure Detailed Information About Others [Line Items]
Administrative fine imposed		$ 46,952	$ 1,672

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- Definition

Amount of fine imposed.

+ References

No definition available.

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- Definition

Disclosure detailed information about others.

+ References

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- Definition

The gain on settlements of litigation.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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-IssueDate 2020-01-01
-Paragraph 98
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- Definition

The amount of income arising from fines and penalties.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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-IssueDate 2020-01-01
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