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Allowance for Loan Losses - Additional information (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2022
Sep. 30, 2021
Dec. 31, 2021
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Provision expense for loan losses $ 500,000 $ 350,000 $ (225,000) $ 850,000  
Loans, net of unearned income $ 979,450,000   $ 979,450,000   $ 985,054,000
Non-performing assets as a percent of loans 0.47%   0.47%   0.34%
Allowance for Loan and Lease Losses Write-offs, Net     $ 1,500,000 $ 71,000  
Allowance For Loan And Lease Losses Write Off Percentage     0.21% 0.01%  
Percentage Of Allowance For Non Performing Assets 232.00%   232.00%   373.00%
Percentage Of Allowance For Total Loans 1.09%   1.09%   1.26%
Amount of favorable shift       $ 1,100,000  
Financing Receivable, Individually Evaluated for Impairment $ 3,668,000   $ 3,668,000   $ 2,170,000
Non-performing          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Loans, net of unearned income $ 4,600,000   $ 4,600,000   $ 3,300,000
Non-performing assets as a percent of loans 0.47%   0.47%   0.34%
Commercial and Industrial          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Loans, net of unearned income $ 128,116,000   $ 128,116,000   $ 134,182,000
Pass          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Minimum individual loan balance requiring quarterly review 2,000,000   2,000,000    
Special Mention          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Minimum individual loan balance requiring quarterly review 250,000   250,000    
Substandard          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Minimum individual loan balance requiring quarterly review 250,000   250,000    
Doubtful          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Minimum individual loan balance requiring quarterly review 100,000   100,000    
Commercial          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Loans, net of unearned income 668,330,000   668,330,000   681,962,000
Commercial | Commercial.          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Loans, net of unearned income 208,387,000   208,387,000   251,137,000
Minimum aggregate balances for commercial loan relationship under structure loan rating process 1,000,000   1,000,000    
Financing Receivable, Individually Evaluated for Impairment 2,045,000   2,045,000   2,165,000
Commercial | Commercial and Industrial          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Loans, net of unearned income 128,116,000   128,116,000   134,182,000
Commercial | Pass          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Loans, net of unearned income 639,114,000   639,114,000   639,765,000
Commercial | Special Mention          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Loans, net of unearned income 13,801,000   13,801,000   26,341,000
Commercial | Substandard          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Loans, net of unearned income 15,412,000   15,412,000   14,208,000
Commercial | Doubtful          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Loans, net of unearned income 3,000   $ 3,000   1,648,000
Commercial | Minimum | Commercial          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Minimum percent of portfolio to be reviewed     40.00%    
Consumer.          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Loans, net of unearned income 311,120,000   $ 311,120,000   $ 303,092,000
Consumer. | Minimum | Consumer and Residential Mortgage Loans          
Accounts, Notes, Loans and Financing Receivable [Line Items]          
Financing Receivable, Individually Evaluated for Impairment $ 150,000   $ 150,000