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v3.22.1

Related Party Transactions - Additional Information (Detail) $ in Thousands, $ in Thousands | 1 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2021 TWD ($) shares | Dec. 31, 2021 USD ($) shares | Sep. 30, 2020 TWD ($) shares | Jul. 31, 2019 TWD ($) shares | Sep. 30, 2021 TWD ($) | Sep. 30, 2021 USD ($) | Dec. 31, 2019 TWD ($)
Associates [member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Real estate properties acquired | $ |  |  |  |  |  |  | $ 2,326,000
HC associates [Member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Real estate properties acquired |  |  |  |  | $ 2,362,000 | $ 85,148 |
USI Enterprise Limited ("USIE") [member] |  |  |  |  |  |  |
Disclosure of transactions between related parties [line items] |  |  |  |  |  |  |
Repurchase of outstanding ordinary shares | shares | shares | 2,271 | 2,271 | 2,685 | 2,805 |  |  |
Value of ordinary shares purchased | $ 1,081,214 | $ 38,977 | $ 1,520,976 | $ 1,247,187 |  |  |

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- Details
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