LOANS AND THE ALLOWANCE FOR LOAN LOSSES - Allowance for loan losses by portfolio (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	$ 7,575	$ 7,100	$ 7,451	$ 7,287
Provision for (recovery of) credit losses	100	18	216	(169)
Recoveries			8
Ending balance	7,675	7,118	7,675	7,118
Individually evaluated	940		940		$ 6,511
Collectively evaluated	6,735		6,735		940
Loans individually evaluated	13,980		13,980		17,835
Loans collectively evaluated	910,376		910,376		874,960
Total Recorded Investment	924,356		924,356		892,795
Cash, Securities and Other
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	1,049	934	764	1,066
Provision for (recovery of) credit losses	258	(94)	535	(226)
Recoveries			8
Ending balance	1,307	840	1,307	840
Individually evaluated	247		247		764
Collectively evaluated	1,060		1,060
Loans individually evaluated	5,264		5,264		11,252
Loans collectively evaluated	141,358		141,358		102,913
Total Recorded Investment	146,622		146,622		114,165
Construction and Development
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	290	227	232	202
Provision for (recovery of) credit losses	18	12	76	37
Ending balance	308	239	308	239
Individually evaluated					232
Collectively evaluated	308		308
Loans collectively evaluated	42,059		42,059		31,897
Total Recorded Investment	42,059		42,059		31,897
1-4 Family Residential
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	2,650	1,957	2,552	2,283
Provision for (recovery of) credit losses	27	132	125	(194)
Ending balance	2,677	2,089	2,677	2,089
Individually evaluated					2,552
Collectively evaluated	2,677		2,677
Loans individually evaluated	1,213		1,213
Loans collectively evaluated	365,025		365,025		350,852
Total Recorded Investment	366,238		366,238		350,852
Non-Owner Occupied CRE
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	1,086	1,199	1,264	1,433
Provision for (recovery of) credit losses	(68)	11	(246)	(223)
Ending balance	1,018	1,210	1,018	1,210
Individually evaluated					1,264
Collectively evaluated	1,018		1,018
Loans collectively evaluated	138,753		138,753		173,741
Total Recorded Investment	138,753		138,753		173,741
Owner Occupied CRE
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	800	626	789	751
Provision for (recovery of) credit losses	76	(22)	87	(147)
Ending balance	876	604	876	604
Individually evaluated					789
Collectively evaluated	876		876
Loans collectively evaluated	119,497		119,497		108,480
Total Recorded Investment	119,497		119,497		108,480
Commercial and Industrial
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	1,700	2,157	1,850	1,552
Provision for (recovery of) credit losses	(211)	(21)	(361)	584
Ending balance	1,489	$ 2,136	1,489	$ 2,136
Individually evaluated	693		693		910
Collectively evaluated	796		796		940
Loans individually evaluated	7,503		7,503		6,583
Loans collectively evaluated	103,684		103,684		107,077
Total Recorded Investment	$ 111,187		$ 111,187		$ 113,660