Quarterly report [Sections 13 or 15(d)]

LOANS HELD FOR INVESTMENT AND ALLOWANCE FOR CREDIT LOSSES (Activity in Allowance for Credit Losses) (Details)

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LOANS HELD FOR INVESTMENT AND ALLOWANCE FOR CREDIT LOSSES (Activity in Allowance for Credit Losses) (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2025
Mar. 31, 2024
Dec. 31, 2024
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning Balance $ 29,251 $ 29,941 $ 29,941
Provision for Credit Losses 1,083 882  
Charge-Offs (1,611) (2,563)  
Recoveries 1,011 1,069  
Net (Charge-Offs) Recoveries (600) (1,494)  
Ending Balance 29,734 29,329 29,251
Commercial, Financial and Agricultural [Member]      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning Balance 1,514 1,482 1,482
Provision for Credit Losses 47 284  
Charge-Offs (168) (282) (1,512)
Recoveries 75 41  
Net (Charge-Offs) Recoveries (93) (241)  
Ending Balance 1,468 1,525 1,514
Real Estate - Construction [Member]      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning Balance 2,384 2,502 2,502
Provision for Credit Losses (151) (633)  
Charge-Offs 0 0 (47)
Recoveries 0 0  
Net (Charge-Offs) Recoveries 0 0  
Ending Balance 2,233 1,869 2,384
Real Estate - Commercial Mortgage [Member]      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning Balance 5,867 5,782 5,782
Provision for Credit Losses 191 (39)  
Charge-Offs 0 0 (3)
Recoveries 3 204  
Net (Charge-Offs) Recoveries 3 204  
Ending Balance 6,061 5,947 5,867
Real Estate - Residential [Member]      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning Balance 14,568 15,056 15,056
Provision for Credit Losses 206 (248)  
Charge-Offs (8) (17) (61)
Recoveries 119 37  
Net (Charge-Offs) Recoveries 111 20  
Ending Balance 14,885 14,828 14,568
Real Estate - Home Equity [Member]      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning Balance 1,952 1,818 1,818
Provision for Credit Losses 68 130  
Charge-Offs 0 (76) (132)
Recoveries 9 24  
Net (Charge-Offs) Recoveries 9 (52)  
Ending Balance 2,029 1,896 1,952
Consumer [Member]      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning Balance 2,966 3,301 3,301
Provision for Credit Losses 722 1,388  
Charge-Offs (1,435) (2,188) (7,627)
Recoveries 805 763  
Net (Charge-Offs) Recoveries (630) (1,425)  
Ending Balance $ 3,058 $ 3,264 $ 2,966