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Loans - Additional Information (Details)
$ in Thousands
3 Months Ended 12 Months Ended
Mar. 31, 2024
USD ($)
loan_portfolio
loan
Mar. 31, 2023
USD ($)
Dec. 31, 2023
USD ($)
Financing Receivable, Allowance for Credit Loss [Line Items]      
Number of loan portfolios | loan_portfolio 4    
Allowance increase (decrease), net loan growth $ 400    
Allowance increase (decrease), change in macroeconomic conditions (1,800)    
Allowance increase (decrease), due to qualitative factors 900    
Allowance increase (decrease), reserve due to overdraft balances 700    
Provision 617 $ 1,554  
Credit for estimated credit losses on off-balance sheet credit exposures 466    
Off-balance sheet, credit loss, liability $ 1,100    
Number of loans individually evaluated for impairment | loan 5    
Ending Loan Balance - Individually Evaluated $ 17,100 4,976 $ 16,754
Number of loans with an allowance for credit loss on loans individually evaluated for impairment | loan 0    
Loans modified during period, amount $ 0   0
Residential      
Financing Receivable, Allowance for Credit Loss [Line Items]      
Provision 575 489  
Ending Loan Balance - Individually Evaluated 1,888 1,949 1,446
Consumer      
Financing Receivable, Allowance for Credit Loss [Line Items]      
Provision 502 1,000  
Ending Loan Balance - Individually Evaluated 0 $ 0 $ 0
Mortgage loans in process of foreclosure, amount $ 2,500    
Consumer | Minimum | Automobile Loan      
Financing Receivable, Allowance for Credit Loss [Line Items]      
Principal repayment terms, period 3 years    
Consumer | Minimum | Credit Card Receivable      
Financing Receivable, Allowance for Credit Loss [Line Items]      
Principal repayment terms, period 1 year    
Consumer | Maximum | Automobile Loan      
Financing Receivable, Allowance for Credit Loss [Line Items]      
Principal repayment terms, period 7 years    
Consumer | Maximum | Credit Card Receivable      
Financing Receivable, Allowance for Credit Loss [Line Items]      
Principal repayment terms, period 5 years