LOANS AND ALLOWANCE FOR CREDIT LOSSES - Summary of Payment Status of Loans (Details) - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	$ 15,532	$ 8,296
Current	1,851,287	1,698,099
Total Loans	1,866,819	1,706,395
Financing Receivables, 30 to 59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	4,382	4,704
Financing Receivables, 60 to 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	754	1,754
Financing Receivables, Equal to Greater than 90 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	10,396	1,838
Commercial and industrial
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	432	389
Current	445,339	279,194
Total Loans	445,771	279,583
Commercial and industrial | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	385	321
Commercial and industrial | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	25	53
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	22	15
Construction and development
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	256	161
Current	270,151	280,337
Total Loans	270,407	280,498
Construction and development | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	256	161
Commercial real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	11,199	2,112
Current	583,017	565,248
Total Loans	594,216	567,360
Commercial real estate | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	1,094	1,181
Commercial real estate | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans		49
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	10,105	882
Farmland
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	120	103
Current	78,388	57,373
Total Loans	78,508	57,476
Farmland | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	117	103
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	2,780	4,792
Current	386,316	407,374
Total Loans	389,096	412,166
1-4 family residential | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	2,097	2,514
1-4 family residential | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	556	1,433
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	127	845
Multi-family residential
Financing Receivable Recorded Investment Past Due [Line Items]
Current	21,701	37,379
Total Loans	21,701	37,379
Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	604	621
Current	50,440	52,624
Total Loans	51,044	53,245
Consumer | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	383	373
Consumer | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	124	152
Consumer | Financing Receivables, Equal to Greater than 90 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	97	96
Agricultural
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	141	118
Current	15,593	18,241
Total Loans	15,734	18,359
Agricultural | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	50	51
Agricultural | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	46	67
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	342	329
Total Loans	$ 342	$ 329