LOANS HELD FOR INVESTMENT AND ALLOWANCE FOR CREDIT LOSSES (Loan Portfolio Aging) (Details) - USD ($) $ in Thousands	Jun. 30, 2023	Dec. 31, 2022
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans	$ 6,623	$ 2,297
Total Loans	2,667,003	2,525,180
Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	4,207	7,829
Total Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	2,656,173	2,515,054
30-59 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	2,993	5,137
60-89 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	1,214	2,692
90 +DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	0	0
Commercial, Financial and Agricultural [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	227,219
Nonaccrual loans	9	41
Total Loans	227,219	247,362
Commercial, Financial and Agricultural [Member] \| Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	277	235
Commercial, Financial and Agricultural [Member] \| Total Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	226,933	247,086
Commercial, Financial and Agricultural [Member] \| 30-59 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	196	109
Commercial, Financial and Agricultural [Member] \| 60-89 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	81	126
Commercial, Financial and Agricultural [Member] \| 90 +DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	0	0
Real Estate - Construction [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	226,404
Nonaccrual loans	415	17
Total Loans	226,404	234,519
Real Estate - Construction [Member] \| Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	218	359
Real Estate - Construction [Member] \| Total Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	225,771	234,143
Real Estate - Construction [Member] \| 30-59 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	0	359
Real Estate - Construction [Member] \| 60-89 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	218	0
Real Estate - Construction [Member] \| 90 +DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	0	0
Real Estate - Commercial Mortgage [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	831,285
Nonaccrual loans	2,421	645
Total Loans	831,285	782,557
Real Estate - Commercial Mortgage [Member] \| Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	124	307
Real Estate - Commercial Mortgage [Member] \| Total Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	828,740	781,605
Real Estate - Commercial Mortgage [Member] \| 30-59 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	79	158
Real Estate - Commercial Mortgage [Member] \| 60-89 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	45	149
Real Estate - Commercial Mortgage [Member] \| 90 +DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	0	0
Real Estate - Residential [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	882,292
Nonaccrual loans	1,701	239
Total Loans	882,292	727,105
Real Estate - Residential [Member] \| Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	369	1,375
Real Estate - Residential [Member] \| Total Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	880,222	725,491
Real Estate - Residential [Member] \| 30-59 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	241	845
Real Estate - Residential [Member] \| 60-89 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	128	530
Real Estate - Residential [Member] \| 90 +DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	0	0
Real Estate - Home Equity [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	203,150
Nonaccrual loans	756	771
Total Loans	203,150	208,120
Real Estate - Home Equity [Member] \| Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	68	35
Real Estate - Home Equity [Member] \| Total Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	202,326	207,314
Real Estate - Home Equity [Member] \| 30-59 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	68	0
Real Estate - Home Equity [Member] \| 60-89 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	0	35
Real Estate - Home Equity [Member] \| 90 +DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	0	0
Consumer [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	296,653
Nonaccrual loans	1,321	584
Total Loans	296,653	325,517
Consumer [Member] \| Total Past Due [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	3,151	5,518
Consumer [Member] \| Total Current [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	292,181	319,415
Consumer [Member] \| 30-59 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	2,409	3,666
Consumer [Member] \| 60-89 DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	742	1,852
Consumer [Member] \| 90 +DPD [Member]
Financing Receivable, Recorded Investment, Past Due [Line Items]
Financing Receivable	$ 0	$ 0

Amortized cost of financing receivable on nonaccrual status. Excludes net investment in lease.

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