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Investments - Schedule of Privately Held Securities Held Subject to Contractual Sale Restrictions (Details)
$ in Thousands
Jun. 30, 2025
USD ($)
Debt and Equity Securities, FV-NI [Line Items]  
Total equity securities subject to contractual sale restrictions $ 11,191
Privately held common stocks  
Debt and Equity Securities, FV-NI [Line Items]  
Total equity securities subject to contractual sale restrictions 5,181
Privately held preferred stocks  
Debt and Equity Securities, FV-NI [Line Items]  
Total equity securities subject to contractual sale restrictions $ 6,010