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Capital Surplus - Details of Capital Surplus (Detail) $ in Thousands, $ in Thousands	12 Months Ended
	Dec. 31, 2022 TWD ($)	Dec. 31, 2024 TWD ($)	Dec. 31, 2024 USD ($)	Dec. 31, 2023 TWD ($)
Capital surplus [line items]
Ending balance		$ 6,055,773	$ 184,684	$ 6,055,773
Changes in associates accounted for using equity method	$ 152
Capital surplus [member]
Capital surplus [line items]
Beginning balance	6,055,621
Ending balance	6,055,773	6,055,773		6,055,773
Changes in associates accounted for using equity method	152
Ending balance	6,055,773
Capital surplus [member] | Share premium [member]
Capital surplus [line items]
Beginning balance	6,043,483
Ending balance	6,043,483	6,043,483		6,043,483
Ending balance	6,043,483
Capital surplus [member] | Others [member]
Capital surplus [line items]
Beginning balance	12,138
Ending balance	12,290	$ 12,290		$ 12,290
Changes in associates accounted for using equity method	152
Ending balance	$ 12,290

X

- Definition

The amount received or receivable from the issuance of the entity's shares in excess of nominal value and amounts received from other transactions involving the entity's stock or stockholders.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Name IAS
-Number 1
-IssueDate 2024-01-01
-Paragraph 55
-URI https://taxonomy.ifrs.org/xifrs-link?type=IAS&num=1&code=ifrs-tx-2024-en-r&anchor=para_55&doctype=Standard
-URIDate 2024-03-27

+ Details

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X

- Definition

Adjustment to additional paid in capital through change in associates accounted for using equity method.

+ References

No definition available.

+ Details

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X

- Definition

Capital Surplus.

+ References

No definition available.

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