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Investment Securities - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Securities Financing Transactions Disclosures [Abstract]    
Accrued interest, after allowance for credit loss $ 1,200  
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] Accrued interest receivable  
Held to maturity, at amortized cost $ 382,447 $ 399,128
Held-to-maturity, accrued Interest, after allowance for credit loss $ 1,800  
Debt Securities, Held-to-Maturity, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] Accrued interest receivable  
Available-for-sale Securities Pledged as Collateral $ 440,000 380,300
Letter of credit outstanding, amount 156,000 $ 153,500
Gross realized gains and losses $ 0