XML 104 R85.htm IDEA: XBRL DOCUMENT v3.21.1
Financial Assets at Fair Value Through Other Comprehensive Income - Summary of Investments in Equity Instruments at Fair Value Through Other Comprehensive Income (Detail)
$ in Thousands, $ in Thousands
Dec. 31, 2020
TWD ($)
Dec. 31, 2020
USD ($)
Dec. 31, 2019
TWD ($)
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]      
Investments in equity instruments at FVTOCI $ 728,398 $ 25,940 $ 755,903
Unquoted ordinary shares [member]      
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]      
Investments in equity instruments at FVTOCI 567,377 20,206 565,028
Limited partnership [member]      
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]      
Investments in equity instruments at FVTOCI 9,692 345 32,157
Unquoted preferred shares [member]      
Disclosure of fair value of investments in equity instruments designated at fair value through other comprehensive income [line items]      
Investments in equity instruments at FVTOCI $ 151,329 $ 5,389 $ 158,718