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Fair Value Measurement - Held-to-maturity debt securities at amortized cost (Details) - US Treasury Securities [Member] - USD ($)
$ in Thousands
Mar. 31, 2025
Dec. 31, 2024
Fair Value Assets And Liabilities Measured On Recurring And Nonrecurring Basis [Line Items]    
Amortized Cost $ 72,652 $ 106,535
Unrealized Gains 2 37
Unrealized Losses 0 0
Aggregate Fair Value $ 72,654 $ 106,572