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Securities - Securities Pledged as Collateral (Details) - Asset Pledged as Collateral - USD ($)
$ in Thousands
Mar. 31, 2024
Dec. 31, 2023
Carrying value of securities pledged to secure public deposits    
Schedule of Held-to-maturity Securities [Line Items]    
Debt securities $ 395,574 $ 421,273
Carrying value of securities pledged to repurchase agreements    
Schedule of Held-to-maturity Securities [Line Items]    
Debt securities $ 5,210 $ 5,477