Fair Value Measurement - Fair Value Hierarchy (Details) - USD ($) $ in Thousands	Dec. 31, 2025	Dec. 31, 2024
Fair Value Measurement
Wealth management products, short-term	$ 76,917	$ 69,947
Equity securities with readily determinable market value	158,090	136,832
Financial instruments measured on a recurring basis
Fair Value Measurement
Wealth management products, short-term	76,917	69,947
Wealth management products, long-term	201,244	194,746
Equity securities with readily determinable market value	158,090	136,832
Total	436,251	401,525
Financial instruments measured on a recurring basis \| Quoted Prices in Active Market for Identical Assets (Level 1)
Fair Value Measurement
Wealth management products, short-term	0	0
Wealth management products, long-term	0	0
Equity securities with readily determinable market value	158,090	136,832
Total	158,090	136,832
Financial instruments measured on a recurring basis \| Significant Other Observable Inputs (Level 2)
Fair Value Measurement
Wealth management products, short-term	76,917	69,947
Wealth management products, long-term	201,244	194,746
Equity securities with readily determinable market value	0	0
Total	278,161	264,693
Financial instruments measured on a recurring basis \| Significant Unobservable Inputs (Level 3)
Fair Value Measurement
Wealth management products, short-term	0	0
Wealth management products, long-term	0	0
Equity securities with readily determinable market value	0	0
Total	$ 0	$ 0

Fair value portion of asset recognized for present right to economic benefit.

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 820
-SubTopic 10
-Name Accounting Standards Codification
-Section 55
-Paragraph 100
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482078/820-10-55-100

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 2
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482106/820-10-50-2

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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

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Amount of investment in wealth management products issued by multiple financial institutions, which are mainly money market funds, structural deposits and contain a variable interest rate, classified as non current.

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