v3.26.1
Goodwill - Additional Information (Detail)
$ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2025
TWD ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
Dec. 31, 2023
Disclosure of reconciliation of changes in goodwill [line items]        
Impairment loss on goodwill $ 132,778 $ 4,233    
Bottom of range [member]        
Disclosure of reconciliation of changes in goodwill [line items]        
Discount rate applied to cash flow projections 11.96% 11.96% 13.91% 13.83%
Top of range [member]        
Disclosure of reconciliation of changes in goodwill [line items]        
Discount rate applied to cash flow projections 13.81% 13.81% 14.56% 14.08%