GOODWILL AND OTHER INTANGIBLES - Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	$ 9,601	$ 783
Accumulated Amortization	(1,218)	(406)
Net Intangible Assets	8,383	377
Core deposit intangible (non-maturity deposits)
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	8,585	783
Accumulated Amortization	(1,136)	(406)
Net Intangible Assets	7,449	$ 377
Customer list and other intangibles
Finite-Lived Intangible Assets [Line Items]
Gross Intangible Assets	1,016
Accumulated Amortization	(82)
Net Intangible Assets	$ 934