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Investments Accounted for Using the Equity Method - Additional Information (Detail) shares in Thousands, $ in Thousands, $ in Thousands | 1 Months Ended | 3 Months Ended | 12 Months Ended
--- | --- | --- | ---
Jun. 30, 2023 TWD ($) shares | Sep. 30, 2024 | Dec. 31, 2024 TWD ($) | Dec. 31, 2024 USD ($) | Dec. 31, 2023 TWD ($) | Dec. 31, 2022 TWD ($)
Disclosure of Investments Accounted for Using Equity Method [line Items] |  |  |  |  |  |
Impairment loss on investments accounted for using the equity method |  |  | $ 42,143 | $ 1,285 | $ 0 | $ 61,206
CHIPLETZ [Member] |  |  |  |  |  |
Disclosure of Investments Accounted for Using Equity Method [line Items] |  |  |  |  |  |
Proportion of ownership interest in associate |  |  | 18.74% | 18.74% | 19.43% |
Percentage of Ownership (%) |  | 18.74% |  |  |  |
MACHVISION Inc [Member] |  |  |  |  |  |
Disclosure of Investments Accounted for Using Equity Method [line Items] |  |  |  |  |  |
Proportion of ownership interest in associate |  |  | 23.08% | 23.08% | 23.08% |
QUESTYLE [Member] |  |  |  |  |  |
Disclosure of Investments Accounted for Using Equity Method [line Items] |  |  |  |  |  |
Proportion of ownership interest in associate |  |  | 6.67% | 6.67% | 6.67% |
Impairment loss on investments accounted for using the equity method |  |  | $ 42,143 | $ 1,285 |  |
Discount rate used in current estimate of value in use |  |  | 11.65% | 11.65% |  |
Private Placements [member] | MACHVISION Inc [Member] |  |  |  |  |  |
Disclosure of Investments Accounted for Using Equity Method [line Items] |  |  |  |  |  |
Consideration paid in cash for shares | $ | $ 2,167,007 |  |  |  |  |
Proportion of ownership interest in associate | 23.08% |  |  |  |  |
Shares subscribed | shares | 13,418 |  |  |  |  |
Lock in period | 3 years |  |  |  |  |

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