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Investments (Details) - USD ($)
$ in Thousands
Sep. 30, 2024
Dec. 31, 2023
Debt Securities, Available-for-sale [Line Items]    
Estimated Fair Value $ 5,677 $ 19,808
Interest receivable 9 151
U.S. government agency bonds    
Debt Securities, Available-for-sale [Line Items]    
Amortized Cost 5,667 19,651
Gross Unrealized, Gains 10 157
Estimated Fair Value $ 5,677 $ 19,808