Annual report pursuant to Section 13 and 15(d)

LOANS HELD FOR INVESTMENT AND ALLOWANCE FOR CREDIT LOSSES - (Allowance for loan losses by portfolio segment) (Details)

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LOANS HELD FOR INVESTMENT AND ALLOWANCE FOR CREDIT LOSSES - (Allowance for loan losses by portfolio segment) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2022
Dec. 31, 2021
Dec. 31, 2020
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning Balance $ 21,606 $ 23,816 $ 13,905
Provision for credit losses 7,065 (2,842) 9,035
Charge-Offs (7,906) (4,827) (6,160)
Recoveries 3,971 5,459 3,767
Net (Charge-Offs) Recoveries (3,935) 632 (2,393)
Ending Balance 24,736 21,606 23,816
Impact Of Adoption Of ASC 326 [Member]      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning Balance     3,269
Commercial, Financial, Agricultural [Member]      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning Balance 2,191 2,204 1,675
Provision for credit losses 316 (227) 578
Charge-Offs (1,308) (239) (789)
Recoveries 307 453 252
Net (Charge-Offs) Recoveries (1,001) 214 (537)
Ending Balance 1,506 2,191 2,204
Commercial, Financial, Agricultural [Member] | Impact Of Adoption Of ASC 326 [Member]      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning Balance     488
Real Estate - Construction [Member]      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning Balance 3,302 2,479 370
Provision for credit losses (658) 813 1,757
Charge-Offs 0 0 0
Recoveries 10 10 50
Net (Charge-Offs) Recoveries 10 10 50
Ending Balance 2,654 3,302 2,479
Real Estate - Construction [Member] | Impact Of Adoption Of ASC 326 [Member]      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning Balance     302
Real Estate - Commercial Mortgage [Member]      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning Balance 5,810 7,029 3,416
Provision for credit losses (746) (1,679) 1,865
Charge-Offs (355) (405) (28)
Recoveries 106 865 318
Net (Charge-Offs) Recoveries (249) 460 290
Ending Balance 4,815 5,810 7,029
Real Estate - Commercial Mortgage [Member] | Impact Of Adoption Of ASC 326 [Member]      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning Balance     1,458
Real Estate - Residential [Member]      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning Balance 4,129 5,440 3,128
Provision for credit losses 5,996 (1,956) 940
Charge-Offs 0 (108) (150)
Recoveries 284 753 279
Net (Charge-Offs) Recoveries 284 645 129
Ending Balance 10,409 4,129 5,440
Real Estate - Residential [Member] | Impact Of Adoption Of ASC 326 [Member]      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning Balance     1,243
Real Estate - Home Equity [Member]      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning Balance 2,296 3,111 2,224
Provision for credit losses (422) (1,125) 486
Charge-Offs (193) (103) (151)
Recoveries 183 413 178
Net (Charge-Offs) Recoveries (10) 310 27
Ending Balance 1,864 2,296 3,111
Real Estate - Home Equity [Member] | Impact Of Adoption Of ASC 326 [Member]      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning Balance     374
Consumer [Member]      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning Balance 3,878 3,553 3,092
Provision for credit losses 2,579 1,332 3,409
Charge-Offs (6,050) (3,972) (5,042)
Recoveries 3,081 2,965 2,690
Net (Charge-Offs) Recoveries (2,969) (1,007) (2,352)
Ending Balance $ 3,488 $ 3,878 3,553
Consumer [Member] | Impact Of Adoption Of ASC 326 [Member]      
Financing Receivable, Allowance for Credit Loss [Roll Forward]      
Beginning Balance     $ (596)