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Equity - Summary of Unearned Employee Compensation (Detail) $ in Thousands, $ in Thousands | 12 Months Ended
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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)

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