LOANS AND THE ALLOWANCE FOR LOAN LOSSES - Aging analysis of recorded investments by class (Details) - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	$ 15,102	$ 7,986
Total current	877,693	804,711
Total Recorded Investment	892,795	812,697
30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	898	3,664
60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		99
90 or More Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	14,204	4,223
Cash, Securities and Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	11,583	149
Total current	102,582	131,607
Total Recorded Investment	114,165	131,756
Cash, Securities and Other | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	331	50
Cash, Securities and Other | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		99
Cash, Securities and Other | 90 or More Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	11,252
Construction and Development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total current	31,897	24,914
Total Recorded Investment	31,897	24,914
1-4 Family Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,217	3,638
Total current	349,635	278,376
Total Recorded Investment	350,852	282,014
90 days past due and accruing interest	1,200	1,200
1-4 Family Residential | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		1,250
1-4 Family Residential | 90 or More Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,217	2,388
Non-Owner Occupied CRE
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	567	750
Total current	173,174	176,237
Total Recorded Investment	173,741	176,987
Non-Owner Occupied CRE | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	567	750
Owner Occupied CRE
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total current	108,480	92,742
Total Recorded Investment	108,480	92,742
Commercial and Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,735	3,449
Total current	111,925	100,835
Total Recorded Investment	113,660	104,284
Commercial and Industrial | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		1,614
Commercial and Industrial | 90 or More Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	$ 1,735	$ 1,835