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Equity - Summary of Unearned Employee Compensation (Detail)
$ in Thousands, $ in Thousands
 12 Months Ended
Dec. 31, 2022
TWD ($)
Dec. 31, 2022
USD ($)
Dec. 31, 2021
TWD ($)
Disclosure of Restricted Stock Awards for Employees [Abstract]      
Balance at January 1 $ (1,164,991) $ (37,911) $ 0
Issuance of employee restricted stock awards 0 0 (1,343,782)
Share-based payment expenses 728,748 23,715 178,791
Valuation adjustments 3,396 111 0
Balance at December 31 $ (432,847) $ (14,085) $ (1,164,991)