LOANS HELD FOR INVESTMENT AND ALLOWANCE FOR CREDIT LOSSES (Schedule of Activity in the Allowance for Loan Losses by Portfolio Class) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	$ 25,068	$ 21,606	$ 23,816
Provision for credit losses	9,595	7,397	(2,842)
Charge-Offs	(9,292)	(7,906)	(4,827)
Recoveries	4,570	3,971	5,459
Net (Charge-Offs) Recoveries	(4,722)	(3,935)	632
Ending Balance	29,941	25,068	21,606
Commercial, Financial, Agricultural [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	1,506	2,191	2,204
Provision for credit losses	210	316	(227)
Charge-Offs	(511)	(1,308)	(239)
Recoveries	277	307	453
Net (Charge-Offs) Recoveries	(234)	(1,001)	214
Ending Balance	1,482	1,506	2,191
Real Estate - Construction [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	2,654	3,302	2,479
Provision for credit losses	(154)	(658)	813
Charge-Offs	0	0	0
Recoveries	2	10	10
Net (Charge-Offs) Recoveries	2	10	10
Ending Balance	2,502	2,654	3,302
Real Estate - Commercial Mortgage [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	4,815	5,810	7,029
Provision for credit losses	1,035	(746)	(1,679)
Charge-Offs	(120)	(355)	(405)
Recoveries	52	106	865
Net (Charge-Offs) Recoveries	(68)	(249)	460
Ending Balance	5,782	4,815	5,810
Real Estate - Residential [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	10,741	4,129	5,440
Provision for credit losses	4,141	6,328	(1,956)
Charge-Offs	(79)	0	(108)
Recoveries	253	284	753
Net (Charge-Offs) Recoveries	174	284	645
Ending Balance	15,056	10,741	4,129
Real Estate - Home Equity [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	1,864	2,296	3,111
Provision for credit losses	(233)	(422)	(1,125)
Charge-Offs	(39)	(193)	(103)
Recoveries	226	183	413
Net (Charge-Offs) Recoveries	187	(10)	310
Ending Balance	1,818	1,864	2,296
Consumer [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	3,488	3,878	3,553
Provision for credit losses	4,596	2,579	1,332
Charge-Offs	(8,543)	(6,050)	(3,972)
Recoveries	3,760	3,081	2,965
Net (Charge-Offs) Recoveries	(4,783)	(2,969)	(1,007)
Ending Balance	$ 3,301	$ 3,488	$ 3,878