LOANS AND THE ALLOWANCE FOR LOAN LOSSES - Allowance for loan losses by portfolio (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018	Dec. 31, 2018
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	$ 7,645	$ 7,100	$ 7,451	$ 7,287
Provision for (recovery of) credit losses	(78)		116	(187)
Recoveries			8
Ending balance	7,575	7,100	7,575	7,100
Individually evaluated	940		940		$ 6,511
Collectively evaluated	6,635		6,635		940
Loans individually evaluated	12,803		12,803		17,835
Loans collectively evaluated	925,202		925,202		874,960
Total Recorded Investment	938,005		938,005		892,795
Cash, Securities and Other
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	877	969	764	1,066
Provision for (recovery of) credit losses	164	(35)	277	(132)
Recoveries			8
Ending balance	1,049	934	1,049	934
Individually evaluated					764
Collectively evaluated	1,049		1,049
Loans individually evaluated	5,107		5,107		11,252
Loans collectively evaluated	144,396		144,396		102,913
Total Recorded Investment	149,503		149,503		114,165
Construction and Development
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	266	228	232	202
Provision for (recovery of) credit losses	24	(1)	58	25
Ending balance	290	227	290	227
Individually evaluated					232
Collectively evaluated	290		290
Loans collectively evaluated	40,826		40,826		31,897
Total Recorded Investment	40,826		40,826		31,897
1-4 Family Residential
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	2,588	2,334	2,552	2,283
Provision for (recovery of) credit losses	62	(377)	98	(326)
Ending balance	2,650	1,957	2,650	1,957
Individually evaluated					2,552
Collectively evaluated	2,650		2,650
Loans individually evaluated	1,213		1,213
Loans collectively evaluated	372,623		372,623		350,852
Total Recorded Investment	373,836		373,836		350,852
Non-Owner Occupied CRE
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	1,235	1,313	1,264	1,433
Provision for (recovery of) credit losses	(149)	(114)	(178)	(234)
Ending balance	1,086	1,199	1,086	1,199
Individually evaluated					1,264
Collectively evaluated	1,086		1,086
Loans collectively evaluated	152,664		152,664		173,741
Total Recorded Investment	152,664		152,664		173,741
Owner Occupied CRE
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	780	724	789	751
Provision for (recovery of) credit losses	20	(98)	11	(125)
Ending balance	800	626	800	626
Individually evaluated					789
Collectively evaluated	800		800
Loans collectively evaluated	112,660		112,660		108,480
Total Recorded Investment	112,660		112,660		108,480
Commercial and Industrial
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Beginning balance	1,899	1,532	1,850	1,552
Provision for (recovery of) credit losses	(199)	625	(150)	605
Ending balance	1,700	$ 2,157	1,700	$ 2,157
Individually evaluated	940		940		910
Collectively evaluated	760		760		940
Loans individually evaluated	6,483		6,483		6,583
Loans collectively evaluated	102,033		102,033		107,077
Total Recorded Investment	$ 108,516		$ 108,516		$ 113,660