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DERIVATIVES (Detail Textuals) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Dec. 31, 2016
Dec. 31, 2015
Derivatives        
Derivative liability position net   $ 300    
Derivative asset position net   2,000    
Derivative collateral   2,100    
Amounts of accumulated other comprehensive income (loss) reclassified to interest expense   (1,419) $ (944) $ (657)
Interest rate swaps | Derivative designated as a cash flow hedge        
Derivatives        
Notional amounts   290,000 175,000  
Interest rate swaps | Derivative designated as a cash flow hedge | Federal Home Loan Bank        
Derivatives        
Interest expense on derivative   1,400 $ 900 $ 700
Amounts of accumulated other comprehensive income (loss) reclassified to interest expense   $ 1,400    
Interest rate swaps | Derivative designated as a cash flow hedge | Federal Home Loan Bank | Forecast for next twelve months        
Derivatives        
Amounts of accumulated other comprehensive income (loss) reclassified to interest expense $ 200,000