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Fair Value of Assets and Liabilities - Narrative (Details)
9 Months Ended
Sep. 30, 2025
USD ($)
security
Sep. 30, 2024
USD ($)
Dec. 31, 2024
security
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Credit loss expense on held-to-maturity securities | $ $ 0 $ 0  
Significant Unobservable Inputs  (Level 3)      
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]      
Number of securities | security 0   0