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
Sep. 30, 2025
Dec. 31, 2024
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans $ 2,582,007 $ 2,651,550
Nonaccrual loans 8,195 6,302
Total Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 5,468 4,311
Total Current [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 2,568,344 2,640,937
30-59 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 3,587 3,520
60-89 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 1,881 791
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 179,018 189,208
Nonaccrual loans 1,366 37
Commercial, Financial and Agricultural [Member] | Total Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 298 390
Commercial, Financial and Agricultural [Member] | Total Current [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 177,354 188,781
Commercial, Financial and Agricultural [Member] | 30-59 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 274 340
Commercial, Financial and Agricultural [Member] | 60-89 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 24 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 156,756 219,994
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 156,756 219,994
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 785,290 779,095
Nonaccrual loans 2,007 566
Real Estate - Commercial Mortgage [Member] | Total Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 1,232 819
Real Estate - Commercial Mortgage [Member] | Total Current [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 782,051 777,710
Real Estate - Commercial Mortgage [Member] | 30-59 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 832 719
Real Estate - Commercial Mortgage [Member] | 60-89 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 400 100
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 1,039,607 1,042,504
Nonaccrual loans 2,256 3,127
Real Estate - Residential [Member] | Total Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 1,560 683
Real Estate - Residential [Member] | Total Current [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 1,035,791 1,038,694
Real Estate - Residential [Member] | 30-59 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 406 185
Real Estate - Residential [Member] | 60-89 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 1,154 498
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 234,111 220,064
Nonaccrual loans 1,838 1,782
Real Estate - Home Equity [Member] | Total Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 424 122
Real Estate - Home Equity [Member] | Total Current [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 231,849 218,160
Real Estate - Home Equity [Member] | 30-59 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 406 122
Real Estate - Home Equity [Member] | 60-89 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 18 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 187,225 200,685
Nonaccrual loans 728 790
Consumer [Member] | Total Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 1,954 2,297
Consumer [Member] | Total Current [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 184,543 197,598
Consumer [Member] | 30-59 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 1,669 2,154
Consumer [Member] | 60-89 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans 285 143
Consumer [Member] | 90 +DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Total Loans $ 0 $ 0