Investments Accounted for Using the Equity Method - Summary of Fair Values of Investments in Associates with Available Published Price Quotation (Detail) - Level 1 of fair value hierarchy [member] $ in Thousands, $ in Thousands |
Dec. 31, 2023
TWD ($)
|
Dec. 31, 2023
USD ($)
|
Dec. 31, 2022
TWD ($)
|
|---|---|---|---|
| ChipMos Technologies Inc [member] | |||
| Disclosure of associates and joint ventures [line items] | |||
| Fair value of investments in associates with available published price quotation | $ 3,333,964 | $ 108,882 | $ 2,643,498 |
| Hung Ching Development & Construction Co. [member] | |||
| Disclosure of associates and joint ventures [line items] | |||
| Fair value of investments in associates with available published price quotation | $ 1,904,476 | $ 62,197 | $ 1,420,636 |