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OFF-BALANCE SHEET ACTIVITIES AND COMMITMENTS (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Unused lines of credit    
OFF-BALANCE SHEET ACTIVITIES AND COMMITMENTS    
Financial instruments with off-balance sheet risk $ 98,413 $ 102,088
Commitments to make loans | Minimum    
OFF-BALANCE SHEET ACTIVITIES AND COMMITMENTS    
Fixed rates (as a percent) 3.25%  
Commitments to make loans | Maximum    
OFF-BALANCE SHEET ACTIVITIES AND COMMITMENTS    
Period of commitments to make loans 60 days  
Fixed rates (as a percent) 7.10%  
Maturities of fixed rate loan commitments 30 years  
Commitments to make loans with fixed rate    
OFF-BALANCE SHEET ACTIVITIES AND COMMITMENTS    
Financial instruments with off-balance sheet risk $ 4,915 12,526
Commitments to make loans with variable rate    
OFF-BALANCE SHEET ACTIVITIES AND COMMITMENTS    
Financial instruments with off-balance sheet risk 12,334 17,040
Letters of credit    
OFF-BALANCE SHEET ACTIVITIES AND COMMITMENTS    
Financial instruments with off-balance sheet risk $ 672 $ 463