Profit Before Income Tax - Summary of Operating Expenses Directly Related to Investment Properties (Detail) $ in Thousands, $ in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
|
Dec. 31, 2025
TWD ($)
|
Dec. 31, 2025
USD ($)
|
Dec. 31, 2024
TWD ($)
|
Dec. 31, 2023
TWD ($)
|
|
| Direct operating expense from investment property [abstract] | ||||
| Direct operating expenses of investment properties that generated rental income | $ 1,478,232 | $ 47,122 | $ 1,549,651 | $ 1,593,819 |