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Segment and Geographic Information - Summary of Property, Equipment and Software, Net, and Right-of-use Assets, Net (Details) - USD ($) | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Revenue from External Customer [Line Items] |  |
Property, Equipment and Software, Net, and Right-of-use Assets, Net | $ 5,082 | $ 3,544
Taiwan |  |
Revenue from External Customer [Line Items] |  |
Property, Equipment and Software, Net, and Right-of-use Assets, Net | 3,747 | 2,139
China |  |
Revenue from External Customer [Line Items] |  |
Property, Equipment and Software, Net, and Right-of-use Assets, Net | 711 | 593
North America |  |
Revenue from External Customer [Line Items] |  |
Property, Equipment and Software, Net, and Right-of-use Assets, Net | 601 | 786
Rest of the World |  |
Revenue from External Customer [Line Items] |  |
Property, Equipment and Software, Net, and Right-of-use Assets, Net | $ 23 | $ 26

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- Definition Amount, after accumulated depreciation and amortization, of property, plant, and equipment and finance lease right-of-use asset. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 360 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147482099/360-10-50-1 Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Name Accounting Standards Codification -Section 50 -Paragraph 4 -Subparagraph (a) -SubTopic 20 -Topic 842 -Publisher FASB -URI https://asc.fasb.org/1943274/2147478964/842-20-50-4 + Details
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