Annual report pursuant to Section 13 and 15(d)

LOANS HELD FOR INVESTMENT AND ALLOWANCE FOR CREDIT LOSSES - aging of the amortized cost basis in accruing past due loans by class (Details)

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LOANS HELD FOR INVESTMENT AND ALLOWANCE FOR CREDIT LOSSES - aging of the amortized cost basis in accruing past due loans by class (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Nonaccrual Loans $ 4,322 $ 5,871
Total Loans 1,931,465 2,006,426
Commercial, Financial, Agricultural [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 223,086  
Nonaccrual Loans 90 161
Total Loans 223,086 393,930
Real Estate - Construction [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 174,394  
Nonaccrual Loans 0 179
Total Loans 174,394 135,831
Real Estate - Commercial Mortgage [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 663,550  
Nonaccrual Loans 604 1,412
Total Loans 663,550 648,393
Real Estate - Residential [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 360,021  
Nonaccrual Loans 2,097 3,130
Total Loans 360,021 352,543
Real Estate - Home Equity [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 187,821  
Nonaccrual Loans 1,319 695
Total Loans 187,821 205,479
Consumer [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 322,593  
Nonaccrual Loans 212 294
Total Loans 322,593 270,250
Current [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 1,923,543 1,995,961
Current [Member] | Commercial, Financial, Agricultural [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 222,873 393,451
Current [Member] | Real Estate - Construction [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 174,394 134,935
Current [Member] | Real Estate - Commercial Mortgage [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 662,795 646,688
Current [Member] | Real Estate - Residential [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 357,408 348,508
Current [Member] | Real Estate - Home Equity [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 186,292 204,321
Current [Member] | Consumer [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 319,781 268,058
Past Due [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 3,600 4,594
Past Due [Member] | Commercial, Financial, Agricultural [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 123 318
Past Due [Member] | Real Estate - Construction [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 0 717
Past Due [Member] | Real Estate - Commercial Mortgage [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 151 293
Past Due [Member] | Real Estate - Residential [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 516 905
Past Due [Member] | Real Estate - Home Equity [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 210 463
Past Due [Member] | Consumer [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 2,600 1,898
30-59 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 2,790 2,743
30-59 DPD [Member] | Commercial, Financial, Agricultural [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 100 194
30-59 DPD [Member] | Real Estate - Construction [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 0 0
30-59 DPD [Member] | Real Estate - Commercial Mortgage [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 151 293
30-59 DPD [Member] | Real Estate - Residential [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 365 375
30-59 DPD [Member] | Real Estate - Home Equity [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 210 325
30-59 DPD [Member] | Consumer [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 1,964 1,556
60-89 DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 810 1,851
60-89 DPD [Member] | Commercial, Financial, Agricultural [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 23 124
60-89 DPD [Member] | Real Estate - Construction [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 0 717
60-89 DPD [Member] | Real Estate - Commercial Mortgage [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 0 0
60-89 DPD [Member] | Real Estate - Residential [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 151 530
60-89 DPD [Member] | Real Estate - Home Equity [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 0 138
60-89 DPD [Member] | Consumer [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 636 342
90 +DPD [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 0 0
90 +DPD [Member] | Commercial, Financial, Agricultural [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 0 0
90 +DPD [Member] | Real Estate - Construction [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 0 0
90 +DPD [Member] | Real Estate - Commercial Mortgage [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 0 0
90 +DPD [Member] | Real Estate - Residential [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 0 0
90 +DPD [Member] | Real Estate - Home Equity [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans 0 0
90 +DPD [Member] | Consumer [Member]    
Financing Receivable, Recorded Investment, Past Due [Line Items]    
Loans $ 0 $ 0