LOANS AND ALLOWANCE FOR CREDIT LOSSES - Summary of Payment Status of Loans (Details) - USD ($) $ in Thousands	Sep. 30, 2021	Dec. 31, 2020
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	$ 5,533	$ 15,532
Current	1,965,348	1,851,287
Total Loans	1,970,881	1,866,819
Financing Receivables, 30 to 59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	2,864	4,382
Financing Receivables, 60 to 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	1,479	754
Financing Receivables, Equal to Greater than 90 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	1,190	10,396
Commercial Industrial and Warehouse lending
Financing Receivable Recorded Investment Past Due [Line Items]
Total Loans	380,470	445,771
Commercial and industrial
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	912	432
Current	379,558	445,339
Total Loans	308,647	356,291
Commercial and industrial | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	874	385
Commercial and industrial | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	0	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	38	22
Construction and development
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	230	256
Current	309,516	270,151
Total Loans	309,746	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	0	256
Construction and development | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	0
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	1,232	11,199
Current	632,121	583,017
Total Loans	633,353	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	197	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	777	0
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	258	10,105
Farmland
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	372	120
Current	135,041	78,388
Total Loans	135,413	78,508
Farmland | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	149	117
Farmland | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	195	3
1-4 family residential
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	2,441	2,780
Current	400,962	386,316
Total Loans	403,403	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	1,407	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	465	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	569	127
Multi-family residential
Financing Receivable Recorded Investment Past Due [Line Items]
Current	40,810	21,701
Total Loans	40,810	21,701
Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	286	604
Current	52,706	50,440
Total Loans	52,992	51,044
Consumer | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	206	383
Consumer | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	33	124
Consumer | Financing Receivables, Equal to Greater than 90 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	47	97
Agricultural
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	60	141
Current	14,139	15,593
Total Loans	14,199	15,734
Agricultural | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	31	50
Agricultural | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	9	46
Agricultural | Financing Receivables, Equal to Greater than 90 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	20	45
Overdrafts
Financing Receivable Recorded Investment Past Due [Line Items]
Current	495	342
Total Loans	$ 495	$ 342