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DERIVATIVES (Income Statement) (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
DERIVATIVES        
Unrealized gain (loss) on interest rate locks $ 91 $ (21) $ 76 $ (148)
Mortgage banking income | Derivatives Not Designated as Hedging Instruments | Derivatives Not in Cash Flow Hedging Relationship | Interest rate lock and forward sale commitments        
DERIVATIVES        
Unrealized gain (loss) on interest rate locks 91 (21) 76 (148)
Other income | Derivatives Not Designated as Hedging Instruments | Derivatives Not in Cash Flow Hedging Relationship | Loans held-for-sale        
DERIVATIVES        
Unrealized gain (loss) on interest rate locks $ 0 $ (3) $ 0 $ 0