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, 2025
Dec. 31, 2024
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans $ 2,660,770 $ 2,651,550
Nonaccrual loans 4,296 6,302
Total Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 3,735 4,311
Total Current [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 2,652,739 2,640,937
30-59 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 3,461 3,520
60-89 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 274 791
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 184,393 189,208
Nonaccrual loans 117 37
Commercial, Financial and Agricultural [Member] | Total Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 129 390
Commercial, Financial and Agricultural [Member] | Total Current [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 184,147 188,781
Commercial, Financial and Agricultural [Member] | 30-59 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 129 340
Commercial, Financial and Agricultural [Member] | 60-89 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 0 50
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 192,282 219,994
Nonaccrual loans 0 0
Real Estate - Construction [Member] | Total Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 0 0
Real Estate - Construction [Member] | Total Current [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 192,282 219,994
Real Estate - Construction [Member] | 30-59 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 0 0
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 806,942 779,095
Nonaccrual loans 419 566
Real Estate - Commercial Mortgage [Member] | Total Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 498 819
Real Estate - Commercial Mortgage [Member] | Total Current [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 806,025 777,710
Real Estate - Commercial Mortgage [Member] | 30-59 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 498 719
Real Estate - Commercial Mortgage [Member] | 60-89 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 0 100
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 1,043,821 1,042,504
Nonaccrual loans 1,517 3,127
Real Estate - Residential [Member] | Total Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 1,042 683
Real Estate - Residential [Member] | Total Current [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 1,041,262 1,038,694
Real Estate - Residential [Member] | 30-59 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 970 185
Real Estate - Residential [Member] | 60-89 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 72 498
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 225,987 220,064
Nonaccrual loans 1,550 1,782
Real Estate - Home Equity [Member] | Total Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 57 122
Real Estate - Home Equity [Member] | Total Current [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 224,380 218,160
Real Estate - Home Equity [Member] | 30-59 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 57 122
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 207,345 200,685
Nonaccrual loans 693 790
Consumer [Member] | Total Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 2,009 2,297
Consumer [Member] | Total Current [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 204,643 197,598
Consumer [Member] | 30-59 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 1,807 2,154
Consumer [Member] | 60-89 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 202 143
Consumer [Member] | 90 +DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans $ 0 $ 0