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ALLOWANCE FOR CREDIT LOSSES - Additional Information (Details) - USD ($)
 3 Months Ended 9 Months Ended
Sep. 30, 2023
Sep. 30, 2023
Sep. 30, 2022
Jun. 30, 2023
Dec. 31, 2022
Jun. 30, 2022
Jan. 01, 2022
Financing Receivable Recorded Investment Past Due [Line Items]              
Accrued interest receivable $ 22,889,000 $ 22,889,000     $ 25,157,000    
Individually evaluated loans balance 47,503,000 47,503,000     14,055,000    
Individually evaluated include Nonaccrual loans 70,000,000 70,000,000     15,800,000    
Individually evaluated non accrual loans performing modified loans       $ 0      
Allowance allocated to modified loans 205,000 205,000          
Allowance for credit losses 68,592,000 68,592,000 $ 59,683,000 62,704,000 60,829,000 $ 59,022,000  
Reduction to allowance for credit losses (743,000) (743,000) (925,000) $ (831,000) (752,000) $ (991,000)  
Provision for credit losses   9,065,000 4,423,000        
Freight related credits transferred to nonaccrual status 33,400,000            
Allowance for credit losses, due to specific reserves 5,500,000 5,500,000          
Allowance for credit losses, recorded investment nonaccrual status $ 70,809,000 $ 70,809,000     $ 18,974,000    
Allowance for credit losses, percentage of loans 1.25% 1.25%     1.15%    
Loan growth   $ 202,777,000 $ 372,026,000        
Increase in loan amount   51,700,000          
ASU 2016-13 [Member]              
Financing Receivable Recorded Investment Past Due [Line Items]              
Reduction to allowance for credit losses             $ 5,500,000
Loans [Member]              
Financing Receivable Recorded Investment Past Due [Line Items]              
Accrued interest receivable $ 20,300,000 $ 20,300,000     $ 22,800,000