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Financial Instruments with Off-Balance Sheet Risk (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Commercial lines of credit    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loan commitments and standby letters of credit, off-balance sheet $ 259,989 $ 292,204
Revolving home equity lines    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loan commitments and standby letters of credit, off-balance sheet 218,935 218,907
Undisbursed construction loans    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loan commitments and standby letters of credit, off-balance sheet 13,943 43,179
Personal and other lines of credit    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loan commitments and standby letters of credit, off-balance sheet 9,136 10,842
Standby letters of credit    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loan commitments and standby letters of credit, off-balance sheet 3,147 1,738
Total unfunded loan commitments and standby letters of credit    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Loan commitments and standby letters of credit, off-balance sheet $ 505,150 566,870
Percentage of commitments expiring in 2023 38.00%  
Percentage of commitments expiring between 2024 and 2030 51.00%  
Percentage of commitments expiring 2030 and thereafter 11.00%  
Allowance for off-balance sheet commitments $ 1,100 $ 1,500