LOANS AND ALLOWANCE FOR CREDIT LOSSES - Summary of Payment Status of Loans (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	$ 11,808	$ 15,532
Current	1,900,559	1,851,287
Total Loans	1,912,367	1,866,819
Financing Receivables, 30 to 59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	5,414	4,382
Financing Receivables, 60 to 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	5,418	754
Financing Receivables, Equal to Greater than 90 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	976	10,396
Commercial and industrial
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	1,014	432
Current	459,477	445,339
Total Loans	460,491	445,771
Commercial and industrial | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	750	385
Commercial and industrial | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	4	25
Commercial and industrial | Financing Receivables, Equal to Greater than 90 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	260	22
Construction and development
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	4,817	256
Current	253,069	270,151
Total Loans	257,886	270,407
Construction and development | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	103	256
Construction and development | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	4,484
Construction and development | Financing Receivables, Equal to Greater than 90 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	230
Commercial real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	1,167	11,199
Current	629,312	583,017
Total Loans	630,479	594,216
Commercial real estate | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	884	1,094
Commercial real estate | Financing Receivables, Equal to Greater than 90 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	283	10,105
Farmland
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	370	120
Current	76,497	78,388
Total Loans	76,867	78,508
Farmland | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	370	117
Farmland | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans		3
1-4 family residential
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	3,629	2,780
Current	385,913	386,316
Total Loans	389,542	389,096
1-4 family residential | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	2,758	2,097
1-4 family residential | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	770	556
1-4 family residential | Financing Receivables, Equal to Greater than 90 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	101	127
Multi-family residential
Financing Receivable Recorded Investment Past Due [Line Items]
Current	32,090	21,701
Total Loans	32,090	21,701
Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	642	604
Current	49,138	50,440
Total Loans	49,780	51,044
Consumer | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	380	383
Consumer | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	160	124
Consumer | Financing Receivables, Equal to Greater than 90 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	102	97
Agricultural
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	169	141
Current	14,736	15,593
Total Loans	14,905	15,734
Agricultural | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	169	50
Agricultural | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans		46
Agricultural | Financing Receivables, Equal to Greater than 90 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans		45
Overdrafts
Financing Receivable Recorded Investment Past Due [Line Items]
Current	327	342
Total Loans	$ 327	$ 342