Financial Assets at Fair Value Through Other Comprehensive Income - Summary of Financial Assets at Fair Value Through Other Comprehensive Income (Detail) $ in Thousands, $ in Thousands |
Dec. 31, 2023
TWD ($)
|
Dec. 31, 2023
USD ($)
|
Dec. 31, 2022
TWD ($)
|
|---|---|---|---|
| Financial assets at fair value through other comprehensive income [abstract] | |||
| Investments in equity instruments at FVTOCI | $ 620,831 | $ 20,275 | $ 482,559 |
| Investments in debt instruments at FVTOCI | 1,042,906 | 34,060 | 1,059,712 |
| Total | $ 1,663,737 | $ 54,335 | $ 1,542,271 |