ACQUISITIONS - Narrative (Details) - USD ($) $ in Thousands	Aug. 06, 2016	Sep. 30, 2017	Dec. 31, 2016
Business Acquisition [Line Items]
Goodwill		$ 18,742	$ 18,742
Denton, Texas Branch Location
Business Acquisition [Line Items]
Assets acquired	$ 4,659
Liabilities assumed	4,658
Bank premises acquired	2,075
Cash acquired	2,399
Core deposit intangibles acquired	42
Goodwill	141
Loans acquired	2
Non-interest bearing deposits assumed	581
Interest bearing deposits assumed	4,047
Other liabilities assumed	30
Consideration paid	66
Goodwill expected to be deducted	$ 141