LOANS AND THE ALLOWANCE FOR LOAN LOSSES - Aging analysis of recorded investments by class (Details) - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	$ 4,470	$ 15,102
Total current	933,535	877,693
Total Recorded Investment	938,005	892,795
30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		898
60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	3,257
90 or More Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,213	14,204
Cash, Securities and Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		11,583
Total current	149,503	102,582
Total Recorded Investment	149,503	114,165
Cash, Securities and Other | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		331
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	40,826	31,897
Total Recorded Investment	40,826	31,897
1-4 Family Residential, Non-Owner Occupied CRE and Owner Occupied CRE
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,200	1,200
1-4 Family Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,710	1,217
Total current	372,126	349,635
Total Recorded Investment	373,836	350,852
1-4 Family Residential | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	497
1-4 Family Residential | 90 or More Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,213	1,217
Non-Owner Occupied CRE
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	460	567
Total current	152,204	173,174
Total Recorded Investment	152,664	173,741
Non-Owner Occupied CRE | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		567
Non-Owner Occupied CRE | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	460
Owner Occupied CRE
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total current	112,660	108,480
Total Recorded Investment	112,660	108,480
Commercial and Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	2,300	1,735
Total current	106,216	111,925
Total Recorded Investment	108,516	113,660
Commercial and Industrial | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	$ 2,300
Commercial and Industrial | 90 or More Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		$ 1,735