v3.26.1
Fair Value Measurement - Held-to-maturity debt securities at amortized cost (Details) - US Treasury Securities [Member] - USD ($)
$ in Thousands
Jun. 30, 2026
Dec. 31, 2025
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Amortized Cost $ 51,729 $ 82,646
Unrealized Gains 2 22
Unrealized Losses (1) 0
Aggregate Fair Value $ 51,730 $ 82,668