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Investment Securities - Additional Information (Details)
 12 Months Ended
Dec. 31, 2023
USD ($)
security
Dec. 31, 2022
USD ($)
Dec. 31, 2021
USD ($)
Debt Instrument [Line Items]      
Number of debt securities with unrealized losses | security 290    
Percentage of individual securities' amortized cost basis (as percent) 9.30%    
Percentage of Company's total amortized cost basis of investment securities portfolio (as percent) 9.10%    
Number of debt securities in continuous loss position for over 12 months | security 284    
Loss duration (in months) 12 months    
ACL recorded for available for sale investment securities $ 0 $ 0  
Gross gains 98,000 0 $ 5,300,000
Gross loss 347,000 0 $ 5,200,000
Accrued interest receivable for investment securities 1,563,000 1,798,000  
Securities pledged to secure public deposits 127,172,000 $ 170,036,000  
Bank Term Funding Program Loan      
Debt Instrument [Line Items]      
Collateral value $ 103,400,000