LOANS AND THE ALLOWANCE FOR LOAN LOSSES - Allowance for loan losses by portfolio (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2021	Mar. 31, 2020	Dec. 31, 2020
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	$ 12,539	$ 7,875
(Recovery of) provision for loan losses		367
Ending balance	12,539	8,242
Individually evaluated	1,755		$ 1,621
Collectively evaluated	10,784		10,918
Loans individually evaluated	4,021		4,058
Loans collectively evaluated	1,542,763		1,530,127
Total Recorded Investment	1,546,784		1,534,185
Cash, Securities and Other
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	2,579	1,058
(Recovery of) provision for loan losses	(6)	34
Ending balance	2,573	1,092
Individually evaluated	4		2
Collectively evaluated	2,569		2,577
Loans individually evaluated	23		50
Loans collectively evaluated	363,132		356,970
Total Recorded Investment	363,155		357,020
Construction and Development
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	932	200
(Recovery of) provision for loan losses	(166)	(14)
Ending balance	766	186
Collectively evaluated	766		932
Loans collectively evaluated	110,024		131,111
Total Recorded Investment	110,024		131,111
1-4 Family Residential
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	3,233	2,850
(Recovery of) provision for loan losses	(81)	158
Ending balance	3,152	3,008
Collectively evaluated	3,152		3,233
Loans collectively evaluated	452,591		455,038
Total Recorded Investment	452,591		455,038
Non-Owner Occupied CRE
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	2,004	1,176
(Recovery of) provision for loan losses	207	227
Ending balance	2,211	1,403
Collectively evaluated	2,211		2,004
Loans collectively evaluated	317,457		281,943
Total Recorded Investment	317,457		281,943
Owner Occupied CRE
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	1,159	911
(Recovery of) provision for loan losses	(36)	(27)
Ending balance	1,123	884
Collectively evaluated	1,123		1,159
Loans individually evaluated	479		479
Loans collectively evaluated	161,308		162,563
Total Recorded Investment	161,787		163,042
Commercial and Industrial
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	2,632	1,680
(Recovery of) provision for loan losses	82	(11)
Ending balance	2,714	$ 1,669
Individually evaluated	1,751		1,619
Collectively evaluated	963		1,013
Loans individually evaluated	3,519		3,529
Loans collectively evaluated	138,251		142,502
Total Recorded Investment	$ 141,770		$ 146,031