LOANS HELD FOR INVESTMENT AND ALLOWANCE FOR CREDIT LOSSES (Loan Portfolio Aging) (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Dec. 31, 2025
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	$ 2,499,871	$ 2,546,118
Nonaccrual loans	10,011	8,595
Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	2,680	7,017
Total Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	2,487,180	2,530,506
30-59 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	1,905	4,653
60-89 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	775	2,364
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	172,536	180,341
Nonaccrual loans	1,127	1,278
Commercial, Financial and Agricultural [Member] \| Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	270	709
Commercial, Financial and Agricultural [Member] \| Total Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	171,139	178,354
Commercial, Financial and Agricultural [Member] \| 30-59 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	197	537
Commercial, Financial and Agricultural [Member] \| 60-89 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	73	172
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	149,127	146,920
Nonaccrual loans	379	0
Real Estate - Construction [Member] \| Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	0	295
Real Estate - Construction [Member] \| Total Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	148,748	146,625
Real Estate - Construction [Member] \| 30-59 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	0	295
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	750,637	768,731
Nonaccrual loans	3,060	2,560
Real Estate - Commercial Mortgage [Member] \| Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	24	1,386
Real Estate - Commercial Mortgage [Member] \| Total Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	747,553	764,785
Real Estate - Commercial Mortgage [Member] \| 30-59 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	24	1,386
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	1,000,813	1,025,690
Nonaccrual loans	3,430	2,143
Real Estate - Residential [Member] \| Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	998	2,737
Real Estate - Residential [Member] \| Total Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	996,385	1,020,810
Real Estate - Residential [Member] \| 30-59 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	368	807
Real Estate - Residential [Member] \| 60-89 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	630	1,930
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	244,462	240,897
Nonaccrual loans	1,190	1,769
Real Estate - Home Equity [Member] \| Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	287	67
Real Estate - Home Equity [Member] \| Total Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	242,985	239,061
Real Estate - Home Equity [Member] \| 30-59 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	287	67
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	182,296	183,539
Nonaccrual loans	825	845
Consumer [Member] \| Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	1,101	1,823
Consumer [Member] \| Total Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	180,370	180,871
Consumer [Member] \| 30-59 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	1,029	1,561
Consumer [Member] \| 60-89 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	72	262
Consumer [Member] \| 90 +DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Total Loans	$ 0	$ 0