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BUSINESS COMBINATION (Narrative) (Details)
$ in Thousands
May 19, 2017
USD ($)
loan
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Business Acquisition [Line Items]      
Goodwill   $ 27,618 $ 11,931
Northwest Bank Branches [Member]      
Business Acquisition [Line Items]      
Loans, acquired $ 122,862 $ 108,100  
Deposits, acquired 212,456    
Business combination cash received net of deposit premium 64,000    
Business combination premium on deposits 17,200    
Business Acquisition, Transaction Costs 977    
Goodwill 14,985    
Cash flows expected to be collected 125,131    
Accretable FMV adjustments $ 2,269    
Business Combination Acquired Loans Contractually Required Payments Receivable Number Of Loans | loan 864    
Business Combination Acquired Loans Contractually Required Payments Receivable $ 125,131    
Business Combination Acquired Loans Accretable Fair Market Value Adjustment $ 2,269