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Investments - Debt Securities, Available-For-Sale (Detail)
$ in Thousands
Sep. 30, 2023
USD ($)
Debt Securities, Available-for-sale [Line Items]  
Amortized Cost $ 95,655
Gross Unrealized Gains 3,062
Fair Value 98,717
U.S government securities [Member]  
Debt Securities, Available-for-sale [Line Items]  
Amortized Cost 95,655
Gross Unrealized Gains 3,062
Fair Value $ 98,717