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Non-current Financial Assets at Fair Value Through Other Comprehensive Income - Additional Information (Detail) - TWD ($)
shares in Thousands
 1 Months Ended
Apr. 30, 2023
Dec. 31, 2023
Non-current financial assets at fair value through other comprehensive income [Line Items]    
Financial assets at fair value through other comprehensive income were pledged   $ 0
Daypower Energy [member] | Ordinary shares [member]    
Non-current financial assets at fair value through other comprehensive income [Line Items]    
Number of shares acquired 1,000  
Amount of shares acquired value $ 12,500,000  
Acquired Percentage Of Shareholdings 10.00%