LOANS HELD FOR INVESTMENT AND ALLOWANCE FOR CREDIT LOSSES (Activity in the allowance for credit losses) (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	$ 21,281,000	$ 22,175,000	$ 21,606,000	$ 23,816,000
Provision for Credit Losses	1,931,000	(546,000)	3,522,000	(3,042,000)
Charge-Offs	(1,762,000)	(1,788,000)	(5,833,000)	(3,765,000)
Recoveries	1,060,000	1,659,000	3,215,000	4,491,000
Net (Charge-Offs) Recoveries	(702,000)	(129,000)	(2,618,000)	726,000
Ending Balance	22,510,000	21,500,000	22,510,000	21,500,000
Commercial, Financial and Agricultural [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	1,641,000	1,972,000	2,191,000	2,204,000
Provision for Credit Losses	(136,000)	178,000	267,000	(192,000)
Charge-Offs	(2,000)	(37,000)	(1,179,000)	(138,000)
Recoveries	58,000	66,000	282,000	305,000
Net (Charge-Offs) Recoveries	56,000	29,000	(897,000)	167,000
Ending Balance	1,561,000	2,179,000	1,561,000	2,179,000
Real Estate - Construction [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	3,138,000	2,759,000	3,302,000	2,479,000
Provision for Credit Losses	(22,000)	517,000	(194,000)	797,000
Charge-Offs	0	0	0	0
Recoveries	2,000	10,000	10,000	10,000
Net (Charge-Offs) Recoveries	2,000	10,000	10,000	10,000
Ending Balance	3,118,000	3,286,000	3,118,000	3,286,000
Real Estate - Commercial Mortgage [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	5,052,000	7,569,000	5,810,000	7,029,000
Provision for Credit Losses	(120,000)	(1,588,000)	(697,000)	(1,719,000)
Charge-Offs	(1,000)	(405,000)	(267,000)	(405,000)
Recoveries	8,000	169,000	93,000	840,000
Net (Charge-Offs) Recoveries	7,000	(236,000)	(174,000)	435,000
Ending Balance	4,939,000	5,745,000	4,939,000	5,745,000
Real Estate - Residential [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	5,645,000	4,353,000	4,129,000	5,440,000
Provision for Credit Losses	1,333,000	(433,000)	2,707,000	(1,768,000)
Charge-Offs	0	(17,000)	0	(88,000)
Recoveries	44,000	401,000	186,000	720,000
Net (Charge-Offs) Recoveries	44,000	384,000	186,000	632,000
Ending Balance	7,022,000	4,304,000	7,022,000	4,304,000
Real Estate - Home Equity [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	1,760,000	2,457,000	2,296,000	3,111,000
Provision for Credit Losses	127,000	(131,000)	(501,000)	(900,000)
Charge-Offs	0	(15,000)	(33,000)	(94,000)
Recoveries	22,000	46,000	147,000	240,000
Net (Charge-Offs) Recoveries	22,000	31,000	114,000	146,000
Ending Balance	1,909,000	2,357,000	1,909,000	2,357,000
Consumer [Member]
Financing Receivable, Allowance for Credit Loss [Roll Forward]
Beginning Balance	4,045,000	3,065,000	3,878,000	3,553,000
Provision for Credit Losses	749,000	911,000	1,940,000	740,000
Charge-Offs	(1,759,000)	(1,314,000)	(4,354,000)	(3,040,000)
Recoveries	926,000	967,000	2,497,000	2,376,000
Net (Charge-Offs) Recoveries	(833,000)	(347,000)	(1,857,000)	(664,000)
Ending Balance	$ 3,961,000	$ 3,629,000	$ 3,961,000	$ 3,629,000