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Others - Additional Information (Detail) $ in Thousands, $ in Thousands					1 Months Ended	12 Months Ended
	Jul. 10, 2024 TWD ($)	Jul. 10, 2020 TWD ($)	Feb. 10, 2020 TWD ($)	Dec. 27, 2019 TWD ($)	Dec. 31, 2013 TWD ($)	Dec. 31, 2024 TWD ($)	Dec. 31, 2024 USD ($)	Jan. 01, 2024
Disclosure Detailed Information About Others [Line Items]
Administrative fine imposed		$ 260
Contribution received from Environmental Protection				$ 55,062
Income from fines and penalties	$ 46,952
Consideration paid received						$ 2,354,938
Corporate social responsibilities [Member]
Disclosure Detailed Information About Others [Line Items]
Social security contributions	$ 50,000
GAPT Holdings limited [Member]
Disclosure Detailed Information About Others [Line Items]
Consideration paid received							$ 380,000
Resolution To Enhance The Shareholding In The Investee [Member] \| GAPT Holdings limited [Member]
Disclosure Detailed Information About Others [Line Items]
Percentage of voting equity interests acquired								16.48%
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