Inventories Related to Real Estate Business - Additional Information (Detail) $ in Thousands, $ in Thousands |
Dec. 31, 2025
TWD ($)
|
Dec. 31, 2025
USD ($)
|
Dec. 31, 2024
TWD ($)
|
|---|---|---|---|
| Disclosure of detailed information about property, plant and equipment [Line Items] | |||
| Inventories related to real estate business expected to be recovered longer than twelve months | $ 3,212,328 | $ 102,401 | $ 3,220,603 |