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Investments (Unconsolidated Subsidiaries) (Details) - USD ($)
$ in Thousands
Sep. 30, 2025
Dec. 31, 2024
Schedule of Equity Method Investments [Line Items]    
Investment in unconsolidated subsidiaries $ 253,085 $ 259,538
Qualified affordable housing project tax credit partnerships    
Schedule of Equity Method Investments [Line Items]    
Investment in unconsolidated subsidiaries 259 247
All other investments, primarily investment fund LPs/LLCs    
Schedule of Equity Method Investments [Line Items]    
Investment in unconsolidated subsidiaries $ 252,826 $ 259,291