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DERIVATIVES-Additional Information (Details)
3 Months Ended 6 Months Ended
Jun. 30, 2019
USD ($)
N
Jun. 30, 2018
USD ($)
Mar. 31, 2018
USD ($)
N
Jun. 30, 2019
USD ($)
Jun. 30, 2018
USD ($)
Dec. 31, 2018
USD ($)
Derivative [Line Items]            
Net interest income $ 29,268,000 $ 29,243,000   $ 59,275,000 $ 57,636,000  
Interest Rate Swap [Member] | Designated as Hedging Instrument [Member]            
Derivative [Line Items]            
Notional Amount 230,000,000     230,000,000   $ 230,000,000
Net interest income 290,000 $ 33,000   625,000 $ 13,000  
Unrealized after-tax gain of accumulated other comprehensive income loss 189,000   $ 220,000      
Interest income $ 31,000     $ 62,000    
Derivative number of instruments terminated | N 4   2