LOANS HELD FOR INVESTMENT AND ALLOWANCE FOR CREDIT LOSSES (Loans held for investment by years of origination) (Details) $ in Thousands	Mar. 31, 2023 USD ($)
Commercial, Financial and Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
2023	$ 10,953
2022	86,495
2021	40,954
2020	17,605
2019	12,297
Prior	16,055
Revolving Loans	51,904
Total	236,263
Commercial, Financial and Agricultural [Member] | Current-Period Gross Writeoffs [Member]
Financing Receivable, Recorded Investment [Line Items]
2023	0
2022	105
2021	22
2020	14
2019	0
Prior	10
Revolving Loans	13
Total	164
Real Estate - Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
2023	34,114
2022	149,982
2021	53,556
2020	8,397
2019	850
Prior	123
Revolving Loans	6,881
Total	253,903
Real Estate - Commercial Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
2023	35,843
2022	246,366
2021	161,753
2020	132,437
2019	54,017
Prior	141,031
Revolving Loans	26,991
Total	798,438
Real Estate - Commercial Mortgage [Member] | Current-Period Gross Writeoffs [Member]
Financing Receivable, Recorded Investment [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	0
Prior	120
Revolving Loans	0
Total	120
Real Estate - Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
2023	133,468
2022	437,224
2021	94,477
2020	46,791
2019	29,318
Prior	84,397
Revolving Loans	9,109
Total	834,784
Real Estate - Home Equity [Member]
Financing Receivable, Recorded Investment [Line Items]
2023	0
2022	51
2021	133
2020	12
2019	401
Prior	1,268
Revolving Loans	205,376
Total	207,241
Real Estate - Home Equity [Member] | Performing Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
2023	0
2022	51
2021	133
2020	12
2019	387
Prior	1,192
Revolving Loans	204,784
Total	206,559
Real Estate - Home Equity [Member] | Nonperforming Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
2023	0
2022	0
2021	0
2020	0
2019	14
Prior	76
Revolving Loans	592
Total	682
Consumer [Member]
Financing Receivable, Recorded Investment [Line Items]
2023	15,735
2022	122,361
2021	100,787
2020	32,222
2019	17,810
Prior	12,268
Revolving Loans	5,072
Total	306,255
Consumer [Member] | Current-Period Gross Writeoffs [Member]
Financing Receivable, Recorded Investment [Line Items]
2023	646
2022	915
2021	488
2020	110
2019	113
Prior	47
Revolving Loans	47
Total	2,366
Consumer [Member] | Performing Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
2023	15,735
2022	122,092
2021	100,617
2020	32,203
2019	17,726
Prior	12,242
Revolving Loans	5,072
Total	305,687
Consumer [Member] | Nonperforming Financial Instruments [Member]
Financing Receivable, Recorded Investment [Line Items]
2023	0
2022	269
2021	170
2020	19
2019	84
Prior	26
Revolving Loans	0
Total	568
Pass [Member] | Commercial, Financial and Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
2023	9,753
2022	86,415
2021	40,206
2020	17,534
2019	12,291
Prior	15,965
Revolving Loans	49,582
Total	231,746
Pass [Member] | Real Estate - Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
2023	34,114
2022	149,982
2021	52,697
2020	7,275
2019	397
Prior	123
Revolving Loans	6,881
Total	251,469
Pass [Member] | Real Estate - Commercial Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
2023	34,848
2022	245,205
2021	159,795
2020	131,444
2019	51,973
Prior	137,449
Revolving Loans	26,056
Total	786,770
Pass [Member] | Real Estate - Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
2023	133,468
2022	436,089
2021	92,988
2020	44,541
2019	28,365
Prior	80,711
Revolving Loans	9,109
Total	825,271
Special Mention [Member] | Commercial, Financial and Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
2023	1,200
2022	0
2021	748
2020	71
2019	2
Prior	47
Revolving Loans	2,322
Total	4,390
Special Mention [Member] | Real Estate - Construction [Member]
Financing Receivable, Recorded Investment [Line Items]
2023	0
2022	0
2021	859
2020	25
2019	453
Prior	0
Revolving Loans	0
Total	1,337
Special Mention [Member] | Real Estate - Commercial Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
2023	995
2022	339
2021	992
2020	240
2019	1,402
Prior	2,819
Revolving Loans	300
Total	7,087
Special Mention [Member] | Real Estate - Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
2023	0
2022	93
2021	356
2020	525
2019	0
Prior	632
Revolving Loans	0
Total	1,606
Substandard [Member] | Commercial, Financial and Agricultural [Member]
Financing Receivable, Recorded Investment [Line Items]
2023	0
2022	80
2021	0
2020	0
2019	4
Prior	43
Revolving Loans	0
Total	127
Substandard [Member] | Real Estate - Commercial Mortgage [Member]
Financing Receivable, Recorded Investment [Line Items]
2023	0
2022	822
2021	966
2020	753
2019	642
Prior	763
Revolving Loans	635
Total	4,581
Substandard [Member] | Real Estate - Residential [Member]
Financing Receivable, Recorded Investment [Line Items]
2023	0
2022	1,042
2021	1,133
2020	1,725
2019	953
Prior	3,054
Revolving Loans	0
Total	$ 7,907