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DERIVATIVE FINANCIAL INSTRUMENTS (Details) - Interest Rate Swaps
$ in Thousands
12 Months Ended
Dec. 31, 2017
USD ($)
Dec. 31, 2016
USD ($)
Dec. 31, 2015
USD ($)
Feb. 28, 2017
USD ($)
instrument
Oct. 31, 2013
USD ($)
instrument
Derivative financial instruments          
Number of derivative instruments | instrument       3 2
Notional amount of interest rate swap derivatives       $ 40,000 $ 25,000
Notional amount of interest rate swap derivatives at maturity         $ 6,673
Hedge ineffectiveness recorded in earnings $ 0 $ 0 $ 0    
Estimated amount to be reclassified as an increase to interest expense 79        
Effect of derivative financial instruments on the condensed consolidated statement of income and comprehensive income          
Net deferral in OCI of derivatives (effective portion) 87 111      
Other Assets          
Derivative financial instruments          
Fair value of derivative assets 196        
Other Liabilities          
Derivative financial instruments          
Fair value of derivative liability   30      
Interest expense          
Effect of derivative financial instruments on the condensed consolidated statement of income and comprehensive income          
Net reclassification from AOCI into income (effective portion) $ 313 $ 108 $ 194