Annual report pursuant to Section 13 and 15(d)

LOANS HELD FOR INVESTMENT AND ALLOWANCE FOR CREDIT LOSSES (Amortized Cost Basis of Collateral-Dependent Loans) (Details)

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LOANS HELD FOR INVESTMENT AND ALLOWANCE FOR CREDIT LOSSES (Amortized Cost Basis of Collateral-Dependent Loans) (Details) - USD ($)
$ in Thousands
Dec. 31, 2023
Dec. 31, 2022
Real estate secured [Member] | Asset Pledged As Collateral [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Notes Receivable Gross $ 3,277 $ 700
Non real estate secured [Member] | Asset Pledged As Collateral [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Notes Receivable Gross 30 0
Commercial, Financial, Agricultural [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Notes Receivable Gross 225,190  
Commercial, Financial, Agricultural [Member] | Real estate secured [Member] | Asset Pledged As Collateral [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Notes Receivable Gross 0 0
Commercial, Financial, Agricultural [Member] | Non real estate secured [Member] | Asset Pledged As Collateral [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Notes Receivable Gross 30 0
Real Estate - Construction [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Notes Receivable Gross 196,091  
Real Estate - Construction [Member] | Real estate secured [Member] | Asset Pledged As Collateral [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Notes Receivable Gross 275 0
Real Estate - Construction [Member] | Non real estate secured [Member] | Asset Pledged As Collateral [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Notes Receivable Gross 0 0
Real Estate - Commercial Mortgage [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Notes Receivable Gross 825,456  
Real Estate - Commercial Mortgage [Member] | Real estate secured [Member] | Asset Pledged As Collateral [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Notes Receivable Gross 1,296 389
Real Estate - Commercial Mortgage [Member] | Non real estate secured [Member] | Asset Pledged As Collateral [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Notes Receivable Gross 0 0
Real Estate - Residential [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Notes Receivable Gross 1,004,219  
Real Estate - Residential [Member] | Real estate secured [Member] | Asset Pledged As Collateral [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Notes Receivable Gross 1,706 160
Real Estate - Residential [Member] | Non real estate secured [Member] | Asset Pledged As Collateral [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Notes Receivable Gross 0 0
Real Estate - Home Equity [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Notes Receivable Gross 210,920  
Real Estate - Home Equity [Member] | Real estate secured [Member] | Asset Pledged As Collateral [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Notes Receivable Gross 0 130
Real Estate - Home Equity [Member] | Non real estate secured [Member] | Asset Pledged As Collateral [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Notes Receivable Gross 0 0
Consumer [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Notes Receivable Gross 272,042  
Consumer [Member] | Real estate secured [Member] | Asset Pledged As Collateral [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Notes Receivable Gross 0 21
Consumer [Member] | Non real estate secured [Member] | Asset Pledged As Collateral [Member]    
Financing Receivable, Allowance for Credit Losses [Line Items]    
Notes Receivable Gross $ 0 $ 0