LOANS AND ALLOWANCE FOR CREDIT LOSSES - Summary of Payment Status of Loans (Details) - USD ($) $ in Thousands	Jun. 30, 2020	Dec. 31, 2019
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	$ 12,592	$ 8,296
Current	1,944,848	1,698,099
Total Loans	1,957,440	1,706,395
Financing Receivables, 30 to 59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	3,241	4,704
Financing Receivables, 60 to 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	256	1,754
Financing Receivables, Equal to Greater than 90 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	9,095	1,838
Commercial and industrial
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	120	389
Current	522,128	279,194
Total Loans	522,248	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	102	321
Commercial and industrial | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	11	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	7	15
Construction and development
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	405	161
Current	265,577	280,337
Total Loans	265,982	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	398	161
Construction and development | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	7
Commercial real estate
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	9,014	2,112
Current	597,047	565,248
Total Loans	606,061	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	301	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	8,713	882
Farmland
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	4	103
Current	77,621	57,373
Total Loans	77,625	57,476
Farmland | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	4	103
1-4 family residential
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	2,673	4,792
Current	380,917	407,374
Total Loans	383,590	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	2,212	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	154	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	307	845
Multi-family residential
Financing Receivable Recorded Investment Past Due [Line Items]
Current	29,692	37,379
Total Loans	29,692	37,379
Consumer
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	328	621
Current	52,658	52,624
Total Loans	52,986	53,245
Consumer | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	189	373
Consumer | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	77	152
Consumer | Financing Receivables, Equal to Greater than 90 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	62	96
Agricultural
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	48	118
Current	18,933	18,241
Total Loans	18,981	18,359
Agricultural | Financing Receivables, 30 to 59 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	35	51
Agricultural | Financing Receivables, 60 to 89 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	7	67
Agricultural | Financing Receivables, Equal to Greater than 90 Days Past Due
Financing Receivable Recorded Investment Past Due [Line Items]
Total past due loans	6
Overdrafts
Financing Receivable Recorded Investment Past Due [Line Items]
Current	275	329
Total Loans	$ 275	$ 329