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SHORT-TERM AND LONG-TERM DEBT - Additional information (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Sep. 30, 2004
Short Term And Long Term Debt [Line Items]      
Short-term debt $ 0 $ 7,000  
Long-term Debt 57,372 57,372  
Federal Home Loan Bank, Advances, Maturities Summary, Due in Next Twelve Months   7,000  
Junior Subordinated Notes 12,400 45,000  
Federal Home Loan Bank, Advances 45,000    
Line of Credit Facility, Maximum Borrowing Capacity 238,900    
Loans from Other Federal Home Loan Banks 45,000    
Line of Credit Facility, Remaining Borrowing Capacity 173,900    
Repurchase Agreements [Member]      
Short Term And Long Term Debt [Line Items]      
Short-term debt 12,400    
Federal Home Loan Bank Advances [Member]      
Short Term And Long Term Debt [Line Items]      
Loans from Other Federal Home Loan Banks 108,300 $ 142,300  
Federal Home Loan Bank of Atlanta [Member]      
Short Term And Long Term Debt [Line Items]      
Junior Subordinated Notes     $ 12,400
Loans from Other Federal Home Loan Banks $ 45,000