Equity - Summary of Share Capital (Detail) shares in Thousands, $ in Thousands, $ in Thousands |
Dec. 31, 2023
TWD ($)
shares
|
Dec. 31, 2023
USD ($)
shares
|
Dec. 31, 2022
TWD ($)
shares
|
|---|---|---|---|
| Disclosure of classes of share capital [abstract] | |||
| Numbers of shares authorized (in thousands) | 5,500,000 | 5,500,000 | 5,500,000 |
| Numbers of shares reserved (in thousands) Employee share options | 400,000 | 400,000 | 400,000 |
| Number of shares issued and fully paid (in thousands) | 4,385,465 | 4,385,465 | 4,367,984 |
| Share capital authorized | $ 55,000,000 | $ 1,796,212 | $ 55,000,000 |
| Share capital reserved Employee share options | $ 4,000,000 | $ 130,634 | $ 4,000,000 |