LOANS AND ALLOWANCE FOR LOAN LOSSES - Schedule of Nonaccrual Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans	$ 3,624	$ 5,891
Commercial and industrial
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans	213	366
Construction and development
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans	0	0
Commercial real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans	913	3,700
Farmland
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans	139	140
1-4 family residential
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans	2,194	1,567
Multi-family residential
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans	0	0
Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans	109	66
Agricultural
Financing Receivable Recorded Investment Past Due [Line Items]
Total loans	$ 56	$ 52