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Long-term Investments - Carrying Amount and Fair Value (Details) - USD ($) $ in Thousands | Dec. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Carrying amount and fair value of the marketable security |  |
Cost Basis | $ 142,000 | $ 142,000
Gross Unrealized Gains | 16,090 | 0
Gross Unrealized Losses | 0 | (5,168)
Fair Value | 158,090 | 136,832
Didi |  |
Carrying amount and fair value of the marketable security |  |
Cost Basis | 142,000 | 142,000
Gross Unrealized Gains | 16,090 | 0
Gross Unrealized Losses | 0 | (5,168)
Fair Value | $ 158,090 | $ 136,832

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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 Cost of investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). Excludes equity method investment and investment in equity security without readily determinable fair value. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 944 -SubTopic 210 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.7-03(a)(1)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147478777/944-210-S99-1 + Details
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- Definition Amount of accumulated unrealized gain on investment in equity security measured at fair value with change in fair value recognized in net income (FV-NI). + References No definition available. + Details
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