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Fair Value Measurement - Fair Value Hierarchy (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022
--- | --- | ---
Fair Value Measurement |  |
Wealth management products | $ 24,535 | $ 212,195
Equity securities with readily determinable market value | 118,268 | 239,550
Financial instruments measured on a recurring basis |  |
Fair Value Measurement |  |
Wealth management products | 24,535 | 212,195
Equity securities with readily determinable market value | 118,268 | 239,550
Total | 142,803 | 451,745
Financial instruments measured on a recurring basis | Quoted Prices in Active Market for Identical Assets (Level 1) |  |
Fair Value Measurement |  |
Wealth management products | 0 | 0
Equity securities with readily determinable market value | 118,268 | 239,550
Total | 118,268 | 239,550
Financial instruments measured on a recurring basis | Significant Other Observable Inputs (Level 2) |  |
Fair Value Measurement |  |
Wealth management products | 24,535 | 212,195
Equity securities with readily determinable market value | 0 | 0
Total | 24,535 | 212,195
Financial instruments measured on a recurring basis | Significant Unobservable Inputs (Level 3) |  |
Fair Value Measurement |  |
Wealth management products | 0 | 0
Equity securities with readily determinable market value | 0 | 0
Total | $ 0 | $ 0

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- Definition Amount of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI), classified as noncurrent. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 825 -SubTopic 10 -Name Accounting Standards Codification -Section 45 -Paragraph 1A -Publisher FASB -URI https://asc.fasb.org//1943274/2147482736/825-10-45-1A + Details
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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 Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (b) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-2 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 820 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org//1943274/2147482106/820-10-50-3 + Details
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