LOANS AND ALLOWANCE FOR CREDIT LOSSES - Summary of Payment Status of Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	$ 3,633	$ 15,532
Current	1,886,531	1,851,287
Total Loans	1,890,164	1,866,819
Financing Receivables, 30 to 59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	1,779	4,382
Financing Receivables, 60 to 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	633	754
Financing Receivables, Equal to Greater than 90 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	1,221	10,396
Commercial and industrial
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	142	432
Current	424,482	445,339
Total Loans	424,624	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	45	385
Commercial and industrial | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	38	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	59	22
Construction and development
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	530	256
Current	263,472	270,151
Total Loans	264,002	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	64	256
Construction and development | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	236
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	524	11,199
Current	607,940	583,017
Total Loans	608,464	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	40	1,094
Commercial real estate | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	278
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	206	10,105
Farmland
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	95	120
Current	94,430	78,388
Total Loans	94,525	78,508
Farmland | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	95	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	2,019	2,780
Current	387,597	386,316
Total Loans	389,616	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	1,315	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	63	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	641	127
Multi-family residential
Financing Receivable Recorded Investment Past Due [Line Items]
Current	42,086	21,701
Total Loans	42,086	21,701
Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	281	604
Current	51,514	50,440
Total Loans	51,795	51,044
Consumer | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	178	383
Consumer | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	18	124
Consumer | Financing Receivables, Equal to Greater than 90 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	85	97
Agricultural
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	42	141
Current	14,566	15,593
Total Loans	14,608	15,734
Agricultural | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	42	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	444	342
Total Loans	$ 444	$ 342