Quarterly report [Sections 13 or 15(d)]

LOANS HELD FOR INVESTMENT AND ALLOWANCE FOR CREDIT LOSSES (Loan Portfolio Aging) (Details)

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LOANS HELD FOR INVESTMENT AND ALLOWANCE FOR CREDIT LOSSES (Loan Portfolio Aging) (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans $ 2,518,404 $ 2,546,118
Nonaccrual loans 11,143 8,595
Total Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 6,643 7,017
Total Current [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 2,500,618 2,530,506
30-59 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 6,556 4,653
60-89 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 87 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 170,268 180,341
Nonaccrual loans 1,460 1,278
Commercial, Financial and Agricultural [Member] | Total Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 908 709
Commercial, Financial and Agricultural [Member] | Total Current [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 167,900 178,354
Commercial, Financial and Agricultural [Member] | 30-59 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 846 537
Commercial, Financial and Agricultural [Member] | 60-89 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 62 172
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 156,630 146,920
Nonaccrual loans 0 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 156,630 146,625
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 755,800 768,731
Nonaccrual loans 3,271 2,560
Real Estate - Commercial Mortgage [Member] | Total Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 1,294 1,386
Real Estate - Commercial Mortgage [Member] | Total Current [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 751,235 764,785
Real Estate - Commercial Mortgage [Member] | 30-59 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 1,294 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 1,011,067 1,025,690
Nonaccrual loans 3,660 2,143
Real Estate - Residential [Member] | Total Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 3,281 2,737
Real Estate - Residential [Member] | Total Current [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 1,004,126 1,020,810
Real Estate - Residential [Member] | 30-59 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 3,269 807
Real Estate - Residential [Member] | 60-89 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 12 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 243,932 240,897
Nonaccrual loans 1,869 1,769
Real Estate - Home Equity [Member] | Total Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 461 67
Real Estate - Home Equity [Member] | Total Current [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 241,602 239,061
Real Estate - Home Equity [Member] | 30-59 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 461 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 180,707 183,539
Nonaccrual loans 883 845
Consumer [Member] | Total Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 699 1,823
Consumer [Member] | Total Current [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 179,125 180,871
Consumer [Member] | 30-59 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 686 1,561
Consumer [Member] | 60-89 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 13 262
Consumer [Member] | 90 +DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans $ 0 $ 0