FAIR VALUE - RECONCILIATION USING SIGNIFICANT UNOBSERVABLE INPUTS (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Private label mortgage backed security
Assets measured on recurring basis, unobservable input reconciliation
Balance, beginning of period	$ 4,777	$ 5,132	$ 5,250
Net change in unrealized gain (loss)	298	(9)	(125)
Recovery of actual losses previously recorded			35
Principal paydowns	(626)	(346)	(28)
Balance, end of period	4,449	4,777	5,132
Trust preferred security
Assets measured on recurring basis, unobservable input reconciliation
Balance, beginning of period	3,200	3,405
Discount accretion	44	44
Net change in unrealized gain (loss)	356	(249)
Purchases			3,405
Balance, end of period	$ 3,600	$ 3,200	$ 3,405