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Fair Value Measurements - Newly Issued Corporate Subordinated Debt (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2025
Sep. 30, 2025
Dec. 31, 2024
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Total assets at fair value $ 122,506 $ 122,506 $ 122,889
Level 3 [Member]      
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]      
Purchases 500 500  
Total assets at fair value $ 500 $ 500