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BASIS OF INTERIM PRESENTATION AND STATUS OF RECENT ACCOUNTING PRONOUNCEMENTS - ACL on Loans (Details) - USD ($)
 9 Months Ended
Jan. 01, 2023
Sep. 30, 2023
BASIS OF INTERIM PRESENTATION AND STATUS OF RECENT ACCOUNTING PRONOUNCEMENTS    
Interest receivable excluded from the estimate of credit losses   $ 6,590,000
Financing Receivable, Estimated Weighted Average Remaining Maturity Average Life 4 years 4 months 9 days 4 years 1 month 28 days
Past period charge offs used to calculate current charge offs 5 years 5 years 9 months
Forecast relevant to collectability of cash flows   2 years
Weighted-average remaining life of portfolio allowance calculation to which loss based on correlation between past loss and economic statistic is added   2 years
Commercial    
BASIS OF INTERIM PRESENTATION AND STATUS OF RECENT ACCOUNTING PRONOUNCEMENTS    
Threshold amount of financing receivables for credit losses   $ 200,000
Residential mortgage loans    
BASIS OF INTERIM PRESENTATION AND STATUS OF RECENT ACCOUNTING PRONOUNCEMENTS    
Threshold amount of financing receivables for credit losses   400,000
Consumer loans    
BASIS OF INTERIM PRESENTATION AND STATUS OF RECENT ACCOUNTING PRONOUNCEMENTS    
Threshold amount of financing receivables for credit losses   $ 400,000