LOANS AND ALLOWANCE FOR LOAN LOSSES - Allowance for loan losses (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Allowance for loan losses:
Beginning balance	$ 13,860	$ 7,894	$ 10,135	$ 6,839
Charge-offs		(17)	(90)	(89)
Recoveries	6	12	17	78
Provision	2,579	1,450	6,383	2,511
Ending balance	16,445	9,339	16,445	9,339
Construction and development
Allowance for loan losses:
Beginning balance	211	263	178	131
Provision	19	(113)	52	19
Ending balance	230	150	230	150
Commercial real estate
Allowance for loan losses:
Beginning balance	7,162	3,768	5,161	2,320
Charge-offs			(26)
Recoveries	4	3	10	8
Provision	(3,246)	1,381	(1,225)	2,824
Ending balance	3,920	5,152	3,920	5,152
Commercial and industrial
Allowance for loan losses:
Beginning balance	599	404	438	448
Charge-offs			(64)
Recoveries				25
Provision	4,601	(79)	4,826	(148)
Ending balance	5,200	325	5,200	325
Residential real estate
Allowance for loan losses:
Beginning balance	5,888	3,423	4,350	3,457
Provision	1,207	272	2,745	238
Ending balance	7,095	3,695	7,095	3,695
Consumer and Other
Allowance for loan losses:
Beginning balance		36	8	91
Charge-offs		(17)		(89)
Recoveries	2	9	7	45
Provision	$ (2)	(11)	$ (15)	(30)
Ending balance		$ 17		17
Unallocated
Allowance for loan losses:
Beginning balance				392
Provision				$ (392)

Amount of increase in allowance for credit loss on accounts receivable, from recovery.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 326
-SubTopic 20
-Section 50
-Paragraph 13
-Subparagraph (e)
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Amount of loans and leases that have been written off from both loan receivables and allowance reserve for credit loss.

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Amount of allowance to cover probable credit losses on loans and leases. Includes carryover of or adjustments to the allowance for loan losses in connection with business combinations. Excludes allowance for loans and leases covered under loss sharing agreements.

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Amount of expense related loan transactions, lease transactions, credit loss from transactions other than loan and lease transactions, and other loss based on assessment of uncollectability from the counterparty to reduce the account to their net realizable value.

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