LOANS AND THE ALLOWANCE FOR LOAN LOSSES - Aging analysis of recorded investments by class (Details) - USD ($) $ in Thousands	Sep. 30, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	$ 7,053	$ 15,102
Total current	917,303	877,693
Total Recorded Investment	924,356	892,795
30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	5,840	898
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	339	11,583
Total current	146,283	102,582
Total Recorded Investment	146,622	114,165
Cash, Securities and Other | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	339	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	42,059	31,897
Total Recorded Investment	42,059	31,897
1-4 Family Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	1,213	1,217
Total current	365,025	349,635
Total Recorded Investment	366,238	350,852
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	902	567
Total current	137,851	173,174
Total Recorded Investment	138,753	173,741
Non-Owner Occupied CRE | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	902	567
Owner Occupied CRE
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total current	119,497	108,480
Total Recorded Investment	119,497	108,480
Commercial and Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	4,599	1,735
Total current	106,588	111,925
Total Recorded Investment	111,187	113,660
Commercial and Industrial | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	$ 4,599
Commercial and Industrial | 90 or More Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		$ 1,735