GOODWILL AND CORE DEPOSIT INTANGIBLE ASSETS - GOODWILL (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2016
Dec. 31, 2015
Dec. 31, 2014
Balance for goodwill      
Beginning of period $ 10,168 $ 10,168 $ 10,168
Acquired goodwill 6,132 0 0
End of period $ 16,300 $ 10,168 $ 10,168