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IMPAIRED LOANS AND ALLOWANCE FOR LOAN LOSSES - Modified Loans (Details)
$ in Thousands
9 Months Ended
Sep. 30, 2017
USD ($)
Number
Sep. 30, 2016
USD ($)
Number
Financing Receivable, Modifications [Line Items]    
Number of Contracts | Number 2 6
Pre-Modification Outstanding Recorded Investment $ 67 $ 1,660
Post-Modification Outstanding Recorded Investment 61 1,489
Valuation Allowance Recorded $ 6 $ 171
Construction and Land Development [Member]    
Financing Receivable, Modifications [Line Items]    
Number of Contracts | Number 1  
Pre-Modification Outstanding Recorded Investment $ 52  
Post-Modification Outstanding Recorded Investment 46  
Valuation Allowance Recorded $ 6  
Residential Real Estate [Member]    
Financing Receivable, Modifications [Line Items]    
Number of Contracts | Number 1 6
Pre-Modification Outstanding Recorded Investment $ 15 $ 1,660
Post-Modification Outstanding Recorded Investment 15 1,489
Valuation Allowance Recorded $ 0 $ 171