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v3.23.1

Profit Before Income Tax - Additional Information (Detail) $ in Thousands, $ in Thousands | 12 Months Ended
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Dec. 31, 2022 TWD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 TWD ($)
Analysis of income and expense [Line Items] |  |  |
Percentage of employees' compensation | 0.25% | 0.25% | 0.19%
Percentage of remuneration to directors | 0.40% | 0.40% | 0.30%
Difference Between Employee Compensation Benefits And Director Remuneration Adjusted In Net Profit | $ 1,030 | $ 34 | $ 818
Bottom of range [member] |  |  |
Analysis of income and expense [Line Items] |  |  |
Percentage of employees' compensation | 0.01% | 0.01% |
Top of range [member] |  |  |
Analysis of income and expense [Line Items] |  |  |
Percentage of employees' compensation | 1.00% | 1.00% |
Percentage of remuneration to directors | 0.75% | 0.75% |

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