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Investment Securities - Narrative (Details) - USD ($)
Dec. 31, 2024
Dec. 31, 2023
Summary of Investment Holdings [Line Items]    
Amount of pretax loss if securities in an unrealized loss position are sold $ 34,100,000  
Allowance for credit losses, continuous unrealized loss position 0  
Asset Pledged as Collateral | Public Funds, Repurchase Agreements, and Potential Borrowings    
Summary of Investment Holdings [Line Items]    
Amortized cost $ 247,400,000 $ 223,400,000