Annual report [Section 13 and 15(d), not S-K Item 405]

Summary of Significant Accounting Policies - Property and Equipment and Indefinite-Lived Intangible Assets and Goodwill (Details)

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Summary of Significant Accounting Policies - Property and Equipment and Indefinite-Lived Intangible Assets and Goodwill (Details)
12 Months Ended
Dec. 31, 2025
USD ($)
item
Dec. 31, 2024
USD ($)
Summary of Significant Accounting Policies    
Impairment $ 0 $ 0
Number of reporting unit | item 1  
Impairment of goodwill $ 0 $ 0
Leasehold improvements    
Summary of Significant Accounting Policies    
Property, Plant, and Equipment, Useful Life, Term, Description [Extensible Enumeration] us-gaap:UsefulLifeTermOfLeaseMember  
Office equipment and furniture    
Summary of Significant Accounting Policies    
Estimated useful life 5 years  
Computer software and equipment    
Summary of Significant Accounting Policies    
Estimated useful life 2 years