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BORROWINGS - Revolving Credit Agreement (Details) - USD ($)
6 Months Ended
Jun. 30, 2023
Jul. 29, 2023
Dec. 31, 2022
Aug. 02, 2019
Line of Credit Facility [Line Items]        
Federal Funds purchased $ 0   $ 22,000,000  
Unsecured revolving credit agreement        
Line of Credit Facility [Line Items]        
Maximum borrowing capacity       $ 30,000,000
Debt instrument, term 1 year      
Federal Funds purchased $ 0   $ 0  
Unsecured revolving credit agreement | Subsequent Event        
Line of Credit Facility [Line Items]        
Maximum borrowing capacity   $ 12,500,000