LOANS AND THE ALLOWANCE FOR LOAN LOSSES - Recorded investment in company's loans (Details) - USD ($)	Mar. 31, 2022	Dec. 31, 2021
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	$ 1,931,134,000	$ 1,954,168,000
Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	1,911,657,000	1,938,462,000
Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	6,297,000	8,875,000
Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	6,800,000	6,831,000
Not Rated
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	6,380,000
Doubtful
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	0	0
Cash, Securities and Other
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	271,811,000	295,948,000
Cash, Securities and Other | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	265,425,000	295,940,000
Cash, Securities and Other | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	6,000	8,000
Cash, Securities and Other | Not Rated
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	6,380,000
Construction and Development
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	151,651,000	178,716,000
Construction and Development | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	151,651,000	176,194,000
Construction and Development | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment		2,522,000
1-4 Family Residential
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	602,412,000	580,872,000
1-4 Family Residential | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	602,340,000	580,797,000
1-4 Family Residential | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	72,000	75,000
Non-Owner Occupied CRE
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	455,715,000	482,622,000
Non-Owner Occupied CRE | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	449,811,000	476,670,000
Non-Owner Occupied CRE | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	5,904,000	5,952,000
Owner Occupied CRE
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	212,401,000	212,426,000
Owner Occupied CRE | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	210,492,000	210,493,000
Owner Occupied CRE | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	1,909,000	1,933,000
Commercial. and Industrial.
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	237,144,000	203,584,000
Commercial. and Industrial. | Pass
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	231,938,000	198,368,000
Commercial. and Industrial. | Special Mention
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	393,000	401,000
Commercial. and Industrial. | Substandard
Financing Receivable, Recorded Investment [Line Items]
Total loans held for investment	$ 4,813,000	$ 4,815,000