v3.26.1
Significant Events After Reporting Period - Additional Information (Detail)
$ / shares in Units, $ / shares in Units, $ in Thousands, $ in Thousands
12 Months Ended
Mar. 27, 2026
TWD ($)
$ / shares
Mar. 27, 2026
USD ($)
$ / shares
Dec. 31, 2025
TWD ($)
Dec. 31, 2025
USD ($)
Dec. 31, 2024
TWD ($)
Dec. 31, 2023
TWD ($)
Mar. 27, 2026
USD ($)
Mar. 24, 2026
TWD ($)
Mar. 24, 2026
USD ($)
Disclosure of non-adjusting events after reporting period [line items]                  
Employees' compensation $ 101,339 $ 3,230 $ 101,339 $ 3,230 $ 81,113 $ 79,385      
Remuneration to directors $ 96,000 $ 3,060              
Major business combination [member]                  
Disclosure of non-adjusting events after reporting period [line items]                  
Consideration transferred, acquisition-date fair value               $ 6,325,000 $ 201,626
Dividend Transactions [Member]                  
Disclosure of non-adjusting events after reporting period [line items]                  
Cash dividends | (per share) $ 6.6 $ 0.2              
Analog Devices Sdn Bhd [Member] | Major business combination [member]                  
Disclosure of non-adjusting events after reporting period [line items]                  
Consideration transferred, acquisition-date fair value $ 3,398,806           $ 108,849    
Percentage of voting equity interests acquired 100.00%           100.00%