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Other Financial Assets - Summary of Other Financial Assets (Detail) $ in Thousands, $ in Thousands | Dec. 31, 2021 TWD ($) | Dec. 31, 2021 USD ($) | Dec. 31, 2020 TWD ($)
--- | --- | --- | ---
Disclosure of financial assets [Line Items] |  |  |
Other financial assets | $ 1,556,980 | $ 56,128 | $ 1,082,000
Current | 140,857 | 5,078 | 551,655
Non-current | 1,416,123 | 51,050 | 530,345
Pledged time deposits [member] |  |  |
Disclosure of financial assets [Line Items] |  |  |
Other financial assets | 415,065 | 14,963 | 367,550
Guaranty deposits [member] |  |  |
Disclosure of financial assets [Line Items] |  |  |
Other financial assets | 1,007,651 | 36,325 | 516,505
Time deposits with original maturity over three months [member] |  |  |
Disclosure of financial assets [Line Items] |  |  |
Other financial assets | 60,499 | 2,181 | 35,988
Others [member] |  |  |
Disclosure of financial assets [Line Items] |  |  |
Other financial assets | $ 73,765 | $ 2,659 | $ 161,957

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