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Investments - Summary of Investments (Details) - USD ($)
$ in Thousands
Sep. 30, 2023
Dec. 31, 2022
Debt securities    
Debt Securities, Available-for-Sale $ 62,755 $ 66,813
Equity Securities [Abstract]    
Equity Method Investments 9,063 8,762
Investments 74,729 79,948
Private equity funds    
Equity Securities [Abstract]    
Equity Securities, FV-NI, Current $ 2,911 $ 4,373