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Business Combinations - Summary of Goodwill Recognized on Acquisitions (Detail) - Dec. 31, 2024 $ in Thousands, $ in Thousands | TWD ($) | USD ($)
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HIRSCHMANN [member] |  |
Disclosure of detailed information about business combination [Line Items] |  |
Total consideration | $ 2,317,201 |
Less: Fair value of identifiable net assets acquired | (2,296,200) |
Goodwill (gain on bargain purchase) recognized on acquisition | 21,001 |
ASEPCAYMAN [Member] |  |
Disclosure of detailed information about business combination [Line Items] |  |
Total consideration | 1,096,373 | $ 33,436
Less: Fair value of identifiable net assets acquired | (1,173,088) | (35,776)
Goodwill (gain on bargain purchase) recognized on acquisition | (76,715) | (2,340)
CHE [Member] |  |
Disclosure of detailed information about business combination [Line Items] |  |
Total consideration | 1,945,678 | 59,338
Less: Fair value of identifiable net assets acquired | (1,945,678) | (59,338)
Goodwill (gain on bargain purchase) recognized on acquisition | $ 0 | $ 0

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