v3.26.3
Summary of significant accounting policies - Principles of consolidation and Restricted cash (Details)
9 Months Ended
Sep. 30, 2026
USD ($)
segment
Dec. 31, 2025
USD ($)
Sep. 30, 2025
USD ($)
Summary of significant accounting policies      
Number of reportable segments | segment 1    
Restricted cash | $ $ 41,826 $ 41,186 $ 40,930