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Investment Securities Available-for-Sale - Narrative (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Dec. 31, 2019
Debt Securities, Available-for-sale [Line Items]      
Federal Reserve and Federal Home Loan Bank stock $ 34,153 $ 40,104  
Debt securities, available-for-sale, realized gain 3,200 1,900 $ 1,700
Debt securities, available-for-sale, realized loss 187 46 153
Proceeds from sale/call of available-for-sale securities $ 201,034 $ 124,144 $ 104,785
Holdings of securities of any one issuer 10.00% 10.00%  
Corporate and Municipal Securities      
Debt Securities, Available-for-sale [Line Items]      
Allowance for credit loss, expense $ 453 $ 167  
Collateral Pledged      
Debt Securities, Available-for-sale [Line Items]      
Available-for-sale securities pledged as collateral $ 261,000 $ 268,400