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LOAN CREDIT QUALITY AND RELATED ALLOWANCE FOR LOAN LOSSES - Narrative (Details)
12 Months Ended
Dec. 31, 2022
USD ($)
loan
component
category
class
Dec. 31, 2021
USD ($)
loan
contract
Dec. 31, 2020
USD ($)
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Minimum amount to evaluate individual loans for possible impairment $ 100,000    
Maximum amount to evaluate individual loans for possible impairment on a case by case basis $ 100,000    
Payment delays period up to which loans are not classified as impaired, maximum (in days) 90 days    
Impaired financing receivable commitment to lend $ 2,000    
Period to classify TDR non performing loans to performing (in months) 6 months    
Number of TDRs granted | loan 1 6  
Number of loan modifications considered TDRs (in contracts) 0 1  
Number of categories, internal risk rating to monitor credit quality (in categories) | category 10    
Number of categories considered not criticized and rated as Pass | category 6    
Minimum period after which loans are considered as substandard (in days) 90 days    
Average outstanding commercial portfolio percentage 55.00%    
Number of components that represents the allowance for loan losses | component 2    
Number of classes that groups of loans are collectively evaluated for impairment | class 2    
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process $ 1,639,083,000 $ 1,391,846,000  
Amount of foreclosed residential real estate held 950,000 339,000  
Consumer mortgage loans secured by residential real estate properties for which formal foreclosure proceedings are in process $ 890,000 193,000  
Period considered for quarter moving average which used in calculating historical charge off (in months) 36 months    
Adjustment of period considered for quarter moving average which used in calculating historical charge off (in months) 12 months    
Minimum | Furniture, fixtures, and equipment      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Estimated useful lives (in years) 5 years    
Minimum | Buildings and improvements      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Estimated useful lives (in years) 15 years    
Maximum | Furniture, fixtures, and equipment      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Estimated useful lives (in years) 10 years    
Maximum | Buildings and improvements      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Estimated useful lives (in years) 40 years    
Other consumer installment loans      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Financing Receivable, before Allowance for Credit Loss, Fee and Loan in Process $ 10,361,000 $ 9,277,000 $ 19,940,000
Payment Concession      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Number of TDRs granted | loan   2  
Amount of TDRs granted   $ 842,000  
Rate Concession      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Number of TDRs granted | loan 1 1  
Amount of TDRs granted $ 220,000 $ 124,000  
Real Estate      
Accounts, Notes, Loans and Financing Receivable [Line Items]      
Number of categories in which real estate loans are segmented | category 3