LOANS AND THE ALLOWANCE FOR LOAN LOSSES - Recorded investment in company's loans (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 929,865	$ 892,795
Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	895,435	859,018
Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	9,260	8,117
Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	25,170	25,660
Cash, Securities and Other
Financing Receivable, Recorded Investment [Line Items]
Total loans	130,641	114,165
Cash, Securities and Other | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	119,664	102,913
Cash, Securities and Other | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	10,977	11,252
Construction and Development
Financing Receivable, Recorded Investment [Line Items]
Total loans	37,128	31,897
Construction and Development | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	37,128	31,897
1-4 Family Residential
Financing Receivable, Recorded Investment [Line Items]
Total loans	360,607	350,852
1-4 Family Residential | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	359,394	349,635
1-4 Family Residential | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	1,213	1,217
Non-Owner Occupied CRE
Financing Receivable, Recorded Investment [Line Items]
Total loans	172,014	173,741
Non-Owner Occupied CRE | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	162,294	165,164
Non-Owner Occupied CRE | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans	9,260	8,117
Non-Owner Occupied CRE | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	460	460
Owner Occupied CRE
Financing Receivable, Recorded Investment [Line Items]
Total loans	108,873	108,480
Owner Occupied CRE | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	108,873	108,480
Commercial and Industrial
Financing Receivable, Recorded Investment [Line Items]
Total loans	120,602	113,660
Commercial and Industrial | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans	108,082	100,929
Commercial and Industrial | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans	$ 12,520	$ 12,731