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Investment Securities - Narrative (Details) - USD ($)
$ in Thousands
Dec. 31, 2022
Dec. 31, 2021
Jan. 01, 2021
Schedule of Available for sale Securities and Held to maturity Securities [Line Items]      
Accrued interest on investment securities $ 29,500 $ 26,800  
Allowance for credit losses 245 245  
Carrying value of securities pledged as collateral 941,300 873,200  
Securities sold under repurchase agreements 196,700 175,100  
State and municipal      
Schedule of Available for sale Securities and Held to maturity Securities [Line Items]      
Allowance for credit losses $ 245 $ 245  
Cumulative effect of ASC 326 adoption | State and municipal      
Schedule of Available for sale Securities and Held to maturity Securities [Line Items]      
Allowance for credit losses     $ 245