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ALLOWANCE FOR LOAN LOSSES - Additional information (Details) - USD ($)
 3 Months Ended 12 Months Ended
Dec. 31, 2022
Sep. 30, 2022
Jun. 30, 2022
Mar. 31, 2022
Dec. 31, 2021
Sep. 30, 2021
Jun. 30, 2021
Mar. 31, 2021
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Accounts, Notes, Loans and Financing Receivable [Line Items]                      
Provision expense for loan losses $ 275,000 $ 500,000 $ (325,000) $ (400,000) $ 250,000 $ 350,000 $ 100,000 $ 400,000 $ 50,000 $ 1,100,000 $ 2,375,000
Loans, net of unearned income $ 990,766,000       $ 985,054,000       $ 990,766,000 $ 985,054,000  
Non-performing assets as a percent of loans 0.53%       0.34%       0.53% 0.34%  
Individually evaluated for impairment $ 3,575,000       $ 2,170,000       $ 3,575,000 $ 2,170,000  
Financing receivable, recorded investment 983,185,000       977,589,000       983,185,000 977,589,000  
Financing receivable recorded investment past due                 7,581,000 7,465,000  
Commercial.                      
Accounts, Notes, Loans and Financing Receivable [Line Items]                      
Loans, net of unearned income         251,137,000         251,137,000  
Individually evaluated for impairment         2,165,000         2,165,000  
CONSUMER                      
Accounts, Notes, Loans and Financing Receivable [Line Items]                      
Loans, net of unearned income 13,473,000       15,096,000       13,473,000 15,096,000  
Individually evaluated for impairment         0         0  
Financing receivable, recorded investment 13,290,000       14,938,000       13,290,000 14,938,000  
Financing receivable recorded investment past due                 183,000 158,000  
Commercial                      
Accounts, Notes, Loans and Financing Receivable [Line Items]                      
Loans, net of unearned income 679,322,000       681,962,000       679,322,000 681,962,000  
Commercial and industrial                      
Accounts, Notes, Loans and Financing Receivable [Line Items]                      
Loans, net of unearned income 153,398,000       134,182,000       153,398,000 134,182,000  
Financing receivable, recorded investment 152,314,000       133,918,000       152,314,000 133,918,000  
Financing receivable recorded investment past due                 1,084,000 264,000  
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]                      
Financing Receivable Threshold For Individually Evaluating Of Impairment 250,000               250,000    
Substandard                      
Accounts, Notes, Loans and Financing Receivable [Line Items]                      
Financing Receivable Threshold For Individually Evaluating Of Impairment 250,000               250,000    
Doubtful                      
Accounts, Notes, Loans and Financing Receivable [Line Items]                      
Minimum individual loan balance requiring quarterly review 100,000               $ 100,000    
Minimum | Commercial.                      
Accounts, Notes, Loans and Financing Receivable [Line Items]                      
Minimum percent of portfolio to be reviewed                 40.00%    
Commercial                      
Accounts, Notes, Loans and Financing Receivable [Line Items]                      
Loans, net of unearned income 679,322,000       681,962,000       $ 679,322,000 681,962,000  
Minimum aggregate balances for commercial loan relationship under structure loan rating process 1,000,000               1,000,000    
Commercial | Commercial.                      
Accounts, Notes, Loans and Financing Receivable [Line Items]                      
Loans, net of unearned income 228,578,000               228,578,000    
Minimum aggregate balances for commercial loan relationship under structure loan rating process 1,000,000               1,000,000    
Individually evaluated for impairment 1,989,000               1,989,000    
Commercial | Commercial and industrial                      
Accounts, Notes, Loans and Financing Receivable [Line Items]                      
Loans, net of unearned income 153,398,000       134,182,000       153,398,000 134,182,000  
Commercial | Pass                      
Accounts, Notes, Loans and Financing Receivable [Line Items]                      
Loans, net of unearned income 646,056,000       639,765,000       646,056,000 639,765,000  
Commercial | Special Mention                      
Accounts, Notes, Loans and Financing Receivable [Line Items]                      
Loans, net of unearned income 11,015,000       26,341,000       11,015,000 26,341,000  
Commercial | Substandard                      
Accounts, Notes, Loans and Financing Receivable [Line Items]                      
Loans, net of unearned income 22,248,000       14,208,000       22,248,000 14,208,000  
Commercial | Doubtful                      
Accounts, Notes, Loans and Financing Receivable [Line Items]                      
Loans, net of unearned income 3,000       1,648,000       3,000 1,648,000  
Consumer. | CONSUMER                      
Accounts, Notes, Loans and Financing Receivable [Line Items]                      
Loans, net of unearned income 13,473,000       $ 15,096,000       13,473,000 $ 15,096,000  
Individually evaluated for impairment 0               0    
Consumer. | Minimum | Consumer and Residential Mortgage Loans                      
Accounts, Notes, Loans and Financing Receivable [Line Items]                      
Individually evaluated for impairment $ 150,000               $ 150,000