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BORROWED MONEY (Details)
12 Months Ended
Dec. 31, 2017
USD ($)
Feb. 28, 2017
USD ($)
Dec. 31, 2016
USD ($)
May 31, 2016
USD ($)
Apr. 30, 2016
USD ($)
Federal Home Loan Bank, Advances, Fiscal Year Maturity [Abstract]          
Federal Home Loan Bank advances $ 45,153,000   $ 55,170,000    
Fixed-rate Advances, With Monthly Interest Payments          
Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate of Amounts Due [Abstract]          
2018 1.06%        
2022 1.11%        
Federal Home Loan Bank, Advances, Fiscal Year Maturity [Abstract]          
2018 $ 25,000,000        
2022 20,000,000        
Federal Home Loan Bank advances $ 45,000,000        
Fixed-rate Advances, With Monthly Principal and Interest Payments          
Federal Home Loan Bank, Advances, Maturities Summary, Average Interest Rate of Amounts Due [Abstract]          
2021 1.38%        
Federal Home Loan Bank, Advances, Fiscal Year Maturity [Abstract]          
2021 $ 153,000        
Federal Home Loan Bank advances 45,153,000        
Revolving Credit Facility          
Line of Credit Facility [Abstract]          
Line of credit facility, current borrowing capacity   $ 25,000,000   $ 15,000,000 $ 25,000,000
Outstanding balance     $ 9,000,000    
Secured Debt          
Line of Credit Facility [Abstract]          
Line of credit facility, current borrowing capacity       $ 10,000,000  
Outstanding balance $ 0        
Covenant description, risk-based capital ratio, minimum 10.00%        
Covenant description, tangible net worth $ 85,000,000        
Covenant description, non-performing assets to equity, maximum 15.00%        
Covenant description, cash flow coverage, minimum 1.25        
Restrictive covenants, additional debt maximum $ 500,000        
Prime Rate | Revolving Credit Facility          
Line of Credit Facility [Abstract]          
Spread on variable rate 0.50%