LOANS HELD FOR INVESTMENT AND ALLOWANCE FOR CREDIT LOSSES (Loan Portfolio Aging) (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	$ 2,683,096	$ 2,733,918
Nonaccrual loans	6,592	6,242
Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	9,388	6,855
Total Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	2,667,116	2,720,821
30-59 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	8,793	5,942
60-89 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	595	913
90 +DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	0	0
Commercial, Financial and Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	194,625	225,190
Nonaccrual loans	130	311
Commercial, Financial and Agricultural [Member] | Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	679	416
Commercial, Financial and Agricultural [Member] | Total Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	193,816	224,463
Commercial, Financial and Agricultural [Member] | 30-59 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	669	311
Commercial, Financial and Agricultural [Member] | 60-89 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	10	105
Commercial, Financial and Agricultural [Member] | 90 +DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	0	0
Real Estate - Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	218,899	196,091
Nonaccrual loans	322	322
Real Estate - Construction [Member] | Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	2,025	206
Real Estate - Construction [Member] | Total Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	216,552	195,563
Real Estate - Construction [Member] | 30-59 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	2,025	206
Real Estate - Construction [Member] | 60-89 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	0	0
Real Estate - Construction [Member] | 90 +DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	0	0
Real Estate - Commercial Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	819,955	825,456
Nonaccrual loans	382	909
Real Estate - Commercial Mortgage [Member] | Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	703	794
Real Estate - Commercial Mortgage [Member] | Total Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	818,870	823,753
Real Estate - Commercial Mortgage [Member] | 30-59 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	703	794
Real Estate - Commercial Mortgage [Member] | 60-89 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	0	0
Real Estate - Commercial Mortgage [Member] | 90 +DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	0	0
Real Estate - Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	1,023,946	1,004,219
Nonaccrual loans	3,595	2,990
Real Estate - Residential [Member] | Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	1,459	704
Real Estate - Residential [Member] | Total Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	1,018,892	1,000,525
Real Estate - Residential [Member] | 30-59 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	1,070	670
Real Estate - Residential [Member] | 60-89 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	389	34
Real Estate - Residential [Member] | 90 +DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	0	0
Real Estate - Home Equity [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	210,988	210,920
Nonaccrual loans	881	999
Real Estate - Home Equity [Member] | Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	629	268
Real Estate - Home Equity [Member] | Total Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	209,478	209,653
Real Estate - Home Equity [Member] | 30-59 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	629	268
Real Estate - Home Equity [Member] | 60-89 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	0	0
Real Estate - Home Equity [Member] | 90 +DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	0	0
Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	214,683	272,042
Nonaccrual loans	1,282	711
Consumer [Member] | Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	3,893	4,467
Consumer [Member] | Total Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	209,508	266,864
Consumer [Member] | 30-59 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	3,697	3,693
Consumer [Member] | 60-89 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	196	774
Consumer [Member] | 90 +DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	$ 0	$ 0