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v3.23.1

Investments Accounted for Using the Equity Method - Additional Information (Detail) ¥ in Thousands, $ in Thousands, $ in Thousands |  |  | 12 Months Ended |
--- | --- | --- | --- | ---
Jan. 31, 2023 TWD ($) | Nov. 30, 2022 CNY (¥) | Dec. 31, 2022 TWD ($) | Dec. 31, 2022 USD ($) | Dec. 31, 2021 TWD ($) | Dec. 31, 2020 TWD ($) | Dec. 31, 2022 USD ($)
Disclosure of Investments Accounted for Using Equity Method [line Items] |  |  |  |  |  |  |
Investments accounted for using the equity method |  |  | $ 14,679,346 |  | $ 16,996,600 | $ 12,806,673 | $ 477,688
Proceeds from sales of investments accounted for using equity method |  |  |  |  |  | $ 125,005 |
Impairment loss on investments accounted for using the equity method |  |  | $ 61,206 | $ 1,992 |  |  |
CHIPLETZ [Member] |  |  |  |  |  |  |
Disclosure of Investments Accounted for Using Equity Method [line Items] |  |  |  |  |  |  |
Proportion of ownership interest in associate |  |  | 20.82% | 20.82% | 20.82% |  |
Discount rate used in current estimate of value in use |  |  | 22.20% |  |  |  | 22.20%
Impairment loss on investments accounted for using the equity method |  |  | $ 61,206 | $ 1,992 |  |  |
QUESTYLE [Member] |  |  |  |  |  |  |
Disclosure of Investments Accounted for Using Equity Method [line Items] |  |  |  |  |  |  |
Proportion of ownership interest in associate |  | 6.67% | 6.67% | 6.67% | 0.00% |  |
USISH [Member] | QUESTYLE [Member] |  |  |  |  |  |  |
Disclosure of Investments Accounted for Using Equity Method [line Items] |  |  |  |  |  |  |
Investments accounted for using the equity method | ¥ |  | ¥ 20,000 |  |  |  |  |
YANN YUAN INVESTMENT CO., LTD [member] |  |  |  |  |  |  |
Disclosure of Investments Accounted for Using Equity Method [line Items] |  |  |  |  |  |  |
Percentage of Ownership (%) |  |  | 27.94% | 27.94% |  |  |
MUtek Electronics Co., Ltd. [Member] |  |  |  |  |  |  |
Disclosure of Investments Accounted for Using Equity Method [line Items] |  |  |  |  |  |  |
Percentage of ownership interest in joint venture |  |  | 49.00% | 49.00% | 49.00% |  |
MUtek Electronics Co., Ltd. [Member] | Shares Transfer Agreement with Cancon Information Industry Co., [Member] |  |  |  |  |  |  |
Disclosure of Investments Accounted for Using Equity Method [line Items] |  |  |  |  |  |  |
Proceeds from sales of investments accounted for using equity method | $ 110,880 |  |  |  |  |  |
Percentage of ownership interest sold | 49.00% |  |  |  |  |  |

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