LOANS AND THE ALLOWANCE FOR LOAN LOSSES - Aging analysis of recorded investments by class (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	$ 4,266	$ 6,362
Total current	1,542,518	1,527,823
Total Recorded Investment	1,546,784	1,534,185
90 days past due and accruing interest	0	0
30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	200	2,785
60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	47
90 or More Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	4,019	3,577
Cash, Securities and Other
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	21	800
Total current	363,134	356,220
Total Recorded Investment	363,155	357,020
Cash, Securities and Other | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		752
Cash, Securities and Other | 90 or More Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	21	48
Construction and Development
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total current	110,024	131,111
Total Recorded Investment	110,024	131,111
1-4 Family Residential
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		1,283
Total current	452,591	453,755
Total Recorded Investment	452,591	455,038
1-4 Family Residential | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		1,283
Non-Owner Occupied CRE
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total current	317,457	281,943
Total Recorded Investment	317,457	281,943
Owner Occupied CRE
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	479	479
Total current	161,308	162,563
Total Recorded Investment	161,787	163,042
Owner Occupied CRE | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due		479
Owner Occupied CRE | 90 or More Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	479
Commercial and Industrial
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	3,766	3,800
Total current	138,004	142,231
Total Recorded Investment	141,770	146,031
Commercial and Industrial | 30-59 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	200	271
Commercial and Industrial | 60-89 Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	47
Commercial and Industrial | 90 or More Days Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total past due	$ 3,519	$ 3,529