LOANS AND THE ALLOWANCE FOR LOAN LOSSES - Allowance for loan losses by portfolio (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2019	Dec. 31, 2018
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	$ 7,451	$ 7,287
Provision for (recovery of) credit losses	662	180
Charge-offs	(248)	(16)
Recoveries	10
Ending balance	7,875	7,451
Individually evaluated	833	940
Collectively evaluated	7,042	6,511
Loans individually evaluated	12,270	17,835
Loans collectively evaluated	984,289	874,960
Total Recorded Investment	996,559	892,795
Cash, Securities and Other
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	764	1,066
Provision for (recovery of) credit losses	532	(286)
Charge-offs	(248)	(16)
Recoveries	10
Ending balance	1,058	764
Collectively evaluated	1,058	764
Loans individually evaluated	2,803	11,252
Loans collectively evaluated	143,898	102,913
Total Recorded Investment	146,701	114,165
Construction and Development
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	232	202
Provision for (recovery of) credit losses	(32)	30
Ending balance	200	232
Collectively evaluated	200	232
Loans collectively evaluated	28,120	31,897
Total Recorded Investment	28,120	31,897
1-4 Family Residential
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	2,552	2,283
Provision for (recovery of) credit losses	298	269
Ending balance	2,850	2,552
Collectively evaluated	2,850	2,552
Loans collectively evaluated	400,134	350,852
Total Recorded Investment	400,134	350,852
Non-Owner Occupied CRE
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	1,264	1,433
Provision for (recovery of) credit losses	(88)	(169)
Ending balance	1,176	1,264
Collectively evaluated	1,176	1,264
Loans collectively evaluated	165,179	173,741
Total Recorded Investment	165,179	173,741
Owner Occupied CRE
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	789	751
Provision for (recovery of) credit losses	122	38
Ending balance	911	789
Collectively evaluated	911	789
Loans collectively evaluated	127,968	108,480
Total Recorded Investment	127,968	108,480
Commercial and Industrial
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	1,850	1,552
Provision for (recovery of) credit losses	(170)	298
Ending balance	1,680	1,850
Individually evaluated	833	940
Collectively evaluated	847	910
Loans individually evaluated	9,467	6,583
Loans collectively evaluated	118,990	107,077
Total Recorded Investment	$ 128,457	$ 113,660

Amount of allowance for credit loss on financing receivable. Excludes allowance for financing receivable covered under loss sharing agreement.

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Amount of recovery of financing receivables doubtful of collection that were previously charged off.

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Amount of writeoff of financing receivable, charged against allowance for credit loss.

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Amount, before allowance and fees, of loans and leases receivable. Excludes 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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