LOANS AND THE ALLOWANCE FOR LOAN LOSSES - Recorded investment in company's loans (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 856,157	$ 812,697
Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	821,206	796,096
Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	9,196	1,272
Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	25,755	15,329
Cash, Securities and Other
Financing Receivable, Recorded Investment [Line Items]
Total loans	132,920	131,756
Cash, Securities and Other | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	121,643	131,756
Cash, Securities and Other | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	11,277
Construction and Development
Financing Receivable, Recorded Investment [Line Items]
Total loans	37,423	24,914
Construction and Development | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	36,397	23,756
Construction and Development | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,026	1,158
1-4 Family Residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	327,674	282,014
1-4 Family Residential | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	326,457	279,424
1-4 Family Residential | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,217	2,590
Non-Owner Occupied CRE
Financing Receivable, Recorded Investment [Line Items]
Total loans	165,670	176,987
Non-Owner Occupied CRE | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	154,847	174,794
Non-Owner Occupied CRE | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	8,170
Non-Owner Occupied CRE | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	2,653	2,193
Owner Occupied CRE
Financing Receivable, Recorded Investment [Line Items]
Total loans	94,698	92,742
Owner Occupied CRE | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	94,698	92,742
Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Total loans	97,772	104,284
Commercial and Industrial | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	87,164	93,624
Commercial and Industrial | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans		114
Commercial and Industrial | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 10,608	$ 10,546