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Related-party Transactions (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Statement [line items] |  |  |
Sales of goods | $ 65 | $ 119 | $ 215
Revenue from miscellaneous service | 92 | 78 | 190
Miscellaneous fee | 11 | 458 | 496
Other receivable | 13 | 66 |
Other payable |  | 110 |
Current receivables due from related parties | 13 | 69 |
Cheng Mei Materials Technology Corporation |  |  |
Statement [line items] |  |  |
Purchase of raw materials |  | 1,258 | 1,079
Accounts payable |  | 911 |
Miscellaneous fee |  | 458 | 496
Associates [member] |  |  |
Statement [line items] |  |  |
Sales of goods | 54 | 8 |
Revenue from miscellaneous service | 92 | 78 | 181
Miscellaneous fee | 11 |  |
Other receivable | 13 | 12 |
Viewsil Microelectronics (Kunshan) Limited |  |  |
Statement [line items] |  |  |
Technical service fee |  | 1,140 | 1,050
Other related parties |  |  |
Statement [line items] |  |  |
Sales of goods | 11 | 111 | 215
Accounts receivable | $ 31 | 14 |
Revenue from miscellaneous service |  |  | 9
Other receivable |  | 54 |
Other payable |  | $ 110 |
VST |  |  |
Statement [line items] |  |  |
Current receivables due from related parties |  |  | $ 1,200

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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition The amount of miscellaneous fee arising from the sale of goods in related party transactions. + References No definition available. + Details
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