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Financial Assets at Fair Value Through Profit or Loss - Summary of Financial Assets at Fair Value Through Profit or Loss (Detail)
$ in Thousands, $ in Thousands
Dec. 31, 2022
TWD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
TWD ($)
Financial Assets At Fair Value Through Profit Or Loss [line items]      
Current financial assets mandatorily measured at fair value through profit or loss $ 128,224 $ 4,173 $ 359,960
Listed stocks [member]      
Financial Assets At Fair Value Through Profit Or Loss [line items]      
Current financial assets mandatorily measured at fair value through profit or loss 171,988   339,679
Valuation adjustments [member]      
Financial Assets At Fair Value Through Profit Or Loss [line items]      
Current financial assets mandatorily measured at fair value through profit or loss $ (43,764)   $ 20,281