v3.26.3
Fair Value Measurement - Held-to-maturity debt securities at amortized cost (Details) - US Treasury Securities [Member] - USD ($)
$ in Thousands
Sep. 30, 2026
Dec. 31, 2025
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Amortized Cost $ 63,711 $ 82,646
Unrealized Gains 1 22
Unrealized Losses (4) 0
Aggregate Fair Value $ 63,708 $ 82,668