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BASIS OF INTERIM PRESENTATION AND STATUS OF RECENT ACCOUNTING PRONOUNCEMENTS - ACL on Loans (Details) - USD ($)
 6 Months Ended 9 Months Ended
Jan. 01, 2023
Jun. 30, 2023
Sep. 30, 2023
BASIS OF INTERIM PRESENTATION AND STATUS OF RECENT ACCOUNTING PRONOUNCEMENTS      
Interest receivable excluded from the estimate of credit losses   $ 6,217,000  
Financing Receivable, Estimated Weighted Average Remaining Maturity Average Life 4 years 4 months 9 days 4 years 2 months 12 days  
Past period charge offs used to calculate current charge offs 5 years 5 years 6 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