LOANS HELD FOR INVESTMENT AND ALLOWANCE FOR CREDIT LOSSES (Summary of Gross Loans Held for Investment by Years of Origination) (Details) - USD ($)  $ in Thousands  | 
12 Months Ended | 
Dec. 31, 2024  | 
Dec. 31, 2023  | 
Dec. 31, 2022  | 
| Financing Receivable, Recorded Investment [Line Items] | 
 
 | 
 
 | 
 
 | 
| Total | 
$ 2,651,550
 | 
$ 2,733,918
 | 
 
 | 
| Current Period Gross Writeoffs, Total | 
9,382
 | 
9,292
 | 
$ 7,906
 | 
| Commercial, Financial, Agricultural [Member] | 
 
 | 
 
 | 
 
 | 
| Financing Receivable, Recorded Investment [Line Items] | 
 
 | 
 
 | 
 
 | 
| 2024 | 
36,031
 | 
57,652
 | 
 
 | 
| 2023 | 
40,414
 | 
67,456
 | 
 
 | 
| 2022 | 
37,960
 | 
29,387
 | 
 
 | 
| 2021 | 
18,454
 | 
10,697
 | 
 
 | 
| 2020 | 
4,668
 | 
7,787
 | 
 
 | 
| Prior | 
9,814
 | 
7,624
 | 
 
 | 
| Revolving Loans | 
41,867
 | 
44,587
 | 
 
 | 
| Total | 
189,208
 | 
225,190
 | 
 
 | 
| Current Period Gross Writeoffs, 2024 | 
9
 | 
6
 | 
 
 | 
| Current Period Gross Writeoffs, 2023 | 
548
 | 
252
 | 
 
 | 
| Current Period Gross Writeoffs, 2022 | 
500
 | 
65
 | 
 
 | 
| Current Period Gross Writeoffs, 2021 | 
111
 | 
31
 | 
 
 | 
| Current Period Gross Writeoffs, 2020 | 
160
 | 
41
 | 
 
 | 
| Current Period Gross Writeoffs, Prior | 
1
 | 
19
 | 
 
 | 
| Current Period Gross Writeoffs, Revolving | 
183
 | 
97
 | 
 
 | 
| Current Period Gross Writeoffs, Total | 
1,512
 | 
511
 | 
1,308
 | 
| Real Estate - Construction [Member] | 
 
 | 
 
 | 
 
 | 
| Financing Receivable, Recorded Investment [Line Items] | 
 
 | 
 
 | 
 
 | 
| 2024 | 
106,703
 | 
102,315
 | 
 
 | 
| 2023 | 
73,615
 | 
68,812
 | 
 
 | 
| 2022 | 
31,150
 | 
19,296
 | 
 
 | 
| 2021 | 
53
 | 
863
 | 
 
 | 
| 2020 | 
0
 | 
188
 | 
 
 | 
| Prior | 
185
 | 
0
 | 
 
 | 
| Revolving Loans | 
8,288
 | 
4,617
 | 
 
 | 
| Total | 
219,994
 | 
196,091
 | 
 
 | 
| Current Period Gross Writeoffs, 2024 | 
0
 | 
0
 | 
 
 | 
| Current Period Gross Writeoffs, 2023 | 
0
 | 
0
 | 
 
 | 
| Current Period Gross Writeoffs, 2022 | 
47
 | 
0
 | 
 
 | 
| Current Period Gross Writeoffs, 2021 | 
0
 | 
0
 | 
 
 | 
| Current Period Gross Writeoffs, 2020 | 
0
 | 
0
 | 
 
 | 
| Current Period Gross Writeoffs, Prior | 
0
 | 
0
 | 
 
 | 
| Current Period Gross Writeoffs, Revolving | 
0
 | 
0
 | 
 
 | 
| Current Period Gross Writeoffs, Total | 
47
 | 
0
 | 
0
 | 
| Real Estate - Commercial Mortgage [Member] | 
 
 | 
 
 | 
 
 | 
| Financing Receivable, Recorded Investment [Line Items] | 
 
 | 
 
 | 
 
 | 
| 2024 | 
77,732
 | 
121,106
 | 
 
 | 
| 2023 | 
115,559
 | 
281,989
 | 
 
 | 
| 2022 | 
228,008
 | 
142,358
 | 
 
 | 
| 2021 | 
110,732
 | 
103,076
 | 
 
 | 
| 2020 | 
92,130
 | 
45,841
 | 
 
 | 
| Prior | 
127,979
 | 
112,025
 | 
 
 | 
| Revolving Loans | 
26,955
 | 
19,061
 | 
 
 | 
| Total | 
779,095
 | 
825,456
 | 
 
 | 
| Current Period Gross Writeoffs, 2024 | 
0
 | 
0
 | 
 
 | 
| Current Period Gross Writeoffs, 2023 | 
0
 | 
0
 | 
 
 | 
| Current Period Gross Writeoffs, 2022 | 
0
 | 
0
 | 
 
 | 
| Current Period Gross Writeoffs, 2021 | 
0
 | 
0
 | 
 
 | 
| Current Period Gross Writeoffs, 2020 | 
0
 | 
0
 | 
 
 | 
| Current Period Gross Writeoffs, Prior | 
0
 | 
120
 | 
 
 | 
| Current Period Gross Writeoffs, Revolving | 
3
 | 
0
 | 
 
 | 
| Current Period Gross Writeoffs, Total | 
3
 | 
120
 | 
355
 | 
| Real Estate - Residential [Member] | 
 
 | 
 
 | 
 
 | 
| Financing Receivable, Recorded Investment [Line Items] | 
 
 | 
 
 | 
 
 | 
| 2024 | 
165,050
 | 
373,232
 | 
 
 | 
| 2023 | 
317,314
 | 
401,636
 | 
 
 | 
| 2022 | 
360,301
 | 
85,097
 | 
 
 | 
| 2021 | 
73,973
 | 
38,007
 | 
 
 | 
| 2020 | 
32,932
 | 
25,855
 | 
 
 | 
| Prior | 
80,373
 | 
72,140
 | 
 
 | 
| Revolving Loans | 
12,561
 | 
8,252
 | 
 
 | 
| Total | 
1,042,504
 | 
1,004,219
 | 
 
 | 
| Current Period Gross Writeoffs, 2024 | 
0
 | 
0
 | 
 
 | 
| Current Period Gross Writeoffs, 2023 | 
13
 | 
0
 | 
 
 | 
| Current Period Gross Writeoffs, 2022 | 
0
 | 
79
 | 
 
 | 
| Current Period Gross Writeoffs, 2021 | 
0
 | 
0
 | 
 
 | 
| Current Period Gross Writeoffs, 2020 | 
0
 | 
0
 | 
 
 | 
| Current Period Gross Writeoffs, Prior | 
48
 | 
0
 | 
 
 | 
| Current Period Gross Writeoffs, Revolving | 
0
 | 
0
 | 
 
 | 
| Current Period Gross Writeoffs, Total | 
61
 | 
79
 | 
0
 | 
| Real Estate - Home Equity [Member] | 
 
 | 
 
 | 
 
 | 
| Financing Receivable, Recorded Investment [Line Items] | 
 
 | 
 
 | 
 
 | 
| 2024 | 
801
 | 
890
 | 
 
 | 
| 2023 | 
521
 | 
48
 | 
 
 | 
| 2022 | 
30
 | 
127
 | 
 
 | 
| 2021 | 
119
 | 
11
 | 
 
 | 
| 2020 | 
9
 | 
386
 | 
 
 | 
| Prior | 
821
 | 
950
 | 
 
 | 
| Revolving Loans | 
217,763
 | 
208,508
 | 
 
 | 
| Total | 
220,064
 | 
210,920
 | 
 
 | 
| Current Period Gross Writeoffs, 2024 | 
0
 | 
0
 | 
 
 | 
| Current Period Gross Writeoffs, 2023 | 
0
 | 
0
 | 
 
 | 
| Current Period Gross Writeoffs, 2022 | 
0
 | 
0
 | 
 
 | 
| Current Period Gross Writeoffs, 2021 | 
0
 | 
0
 | 
 
 | 
| Current Period Gross Writeoffs, 2020 | 
0
 | 
0
 | 
 
 | 
| Current Period Gross Writeoffs, Prior | 
0
 | 
0
 | 
 
 | 
| Current Period Gross Writeoffs, Revolving | 
132
 | 
39
 | 
 
 | 
| Current Period Gross Writeoffs, Total | 
132
 | 
39
 | 
193
 | 
| Real Estate - Home Equity [Member] | Performing [Member] | 
 
 | 
 
 | 
 
 | 
| Financing Receivable, Recorded Investment [Line Items] | 
 
 | 
 
 | 
 
 | 
| 2024 | 
801
 | 
890
 | 
 
 | 
| 2023 | 
521
 | 
48
 | 
 
 | 
| 2022 | 
30
 | 
127
 | 
 
 | 
| 2021 | 
119
 | 
11
 | 
 
 | 
| 2020 | 
9
 | 
386
 | 
 
 | 
| Prior | 
821
 | 
950
 | 
 
 | 
| Revolving Loans | 
215,981
 | 
207,509
 | 
 
 | 
| Total | 
218,282
 | 
209,921
 | 
 
 | 
| Real Estate - Home Equity [Member] | Nonperforming [Member] | 
 
 | 
 
 | 
 
 | 
| Financing Receivable, Recorded Investment [Line Items] | 
 
 | 
 
 | 
 
 | 
| 2024 | 
0
 | 
0
 | 
 
 | 
| 2023 | 
0
 | 
0
 | 
 
 | 
| 2022 | 
0
 | 
0
 | 
 
 | 
| 2021 | 
0
 | 
0
 | 
 
 | 
| 2020 | 
0
 | 
0
 | 
 
 | 
| Prior | 
0
 | 
0
 | 
 
 | 
| Revolving Loans | 
1,782
 | 
999
 | 
 
 | 
| Total | 
1,782
 | 
999
 | 
 
 | 
| Consumer [Member] | 
 
 | 
 
 | 
 
 | 
| Financing Receivable, Recorded Investment [Line Items] | 
 
 | 
 
 | 
 
 | 
| 2024 | 
32,303
 | 
68,789
 | 
 
 | 
| 2023 | 
45,169
 | 
90,386
 | 
 
 | 
| 2022 | 
56,263
 | 
70,940
 | 
 
 | 
| 2021 | 
42,158
 | 
21,318
 | 
 
 | 
| 2020 | 
10,957
 | 
10,210
 | 
 
 | 
| Prior | 
4,187
 | 
4,258
 | 
 
 | 
| Revolving Loans | 
9,648
 | 
6,141
 | 
 
 | 
| Total | 
200,685
 | 
272,042
 | 
 
 | 
| Current Period Gross Writeoffs, 2024 | 
2,562
 | 
3,137
 | 
 
 | 
| Current Period Gross Writeoffs, 2023 | 
1,605
 | 
3,224
 | 
 
 | 
| Current Period Gross Writeoffs, 2022 | 
2,088
 | 
1,362
 | 
 
 | 
| Current Period Gross Writeoffs, 2021 | 
897
 | 
329
 | 
 
 | 
| Current Period Gross Writeoffs, 2020 | 
237
 | 
230
 | 
 
 | 
| Current Period Gross Writeoffs, Prior | 
76
 | 
99
 | 
 
 | 
| Current Period Gross Writeoffs, Revolving | 
162
 | 
162
 | 
 
 | 
| Current Period Gross Writeoffs, Total | 
7,627
 | 
8,543
 | 
$ 6,050
 | 
| Consumer [Member] | Performing [Member] | 
 
 | 
 
 | 
 
 | 
| Financing Receivable, Recorded Investment [Line Items] | 
 
 | 
 
 | 
 
 | 
| 2024 | 
32,293
 | 
68,496
 | 
 
 | 
| 2023 | 
44,995
 | 
90,031
 | 
 
 | 
| 2022 | 
55,942
 | 
70,882
 | 
 
 | 
| 2021 | 
42,002
 | 
21,314
 | 
 
 | 
| 2020 | 
10,899
 | 
10,210
 | 
 
 | 
| Prior | 
4,116
 | 
4,258
 | 
 
 | 
| Revolving Loans | 
9,648
 | 
5,431
 | 
 
 | 
| Total | 
199,895
 | 
270,622
 | 
 
 | 
| Consumer [Member] | Nonperforming [Member] | 
 
 | 
 
 | 
 
 | 
| Financing Receivable, Recorded Investment [Line Items] | 
 
 | 
 
 | 
 
 | 
| 2024 | 
10
 | 
293
 | 
 
 | 
| 2023 | 
174
 | 
355
 | 
 
 | 
| 2022 | 
321
 | 
58
 | 
 
 | 
| 2021 | 
156
 | 
4
 | 
 
 | 
| 2020 | 
58
 | 
0
 | 
 
 | 
| Prior | 
71
 | 
0
 | 
 
 | 
| Revolving Loans | 
0
 | 
710
 | 
 
 | 
| Total | 
790
 | 
1,420
 | 
 
 | 
| Pass [Member] | Commercial, Financial, Agricultural [Member] | 
 
 | 
 
 | 
 
 | 
| Financing Receivable, Recorded Investment [Line Items] | 
 
 | 
 
 | 
 
 | 
| 2024 | 
35,596
 | 
57,320
 | 
 
 | 
| 2023 | 
36,435
 | 
66,671
 | 
 
 | 
| 2022 | 
37,506
 | 
28,933
 | 
 
 | 
| 2021 | 
18,433
 | 
10,610
 | 
 
 | 
| 2020 | 
4,610
 | 
7,758
 | 
 
 | 
| Prior | 
9,743
 | 
7,502
 | 
 
 | 
| Revolving Loans | 
41,720
 | 
44,350
 | 
 
 | 
| Total | 
184,043
 | 
223,144
 | 
 
 | 
| Pass [Member] | Real Estate - Construction [Member] | 
 
 | 
 
 | 
 
 | 
| Financing Receivable, Recorded Investment [Line Items] | 
 
 | 
 
 | 
 
 | 
| 2024 | 
105,148
 | 
101,684
 | 
 
 | 
| 2023 | 
73,615
 | 
68,265
 | 
 
 | 
| 2022 | 
29,821
 | 
18,181
 | 
 
 | 
| 2021 | 
53
 | 
0
 | 
 
 | 
| 2020 | 
0
 | 
188
 | 
 
 | 
| Prior | 
185
 | 
0
 | 
 
 | 
| Revolving Loans | 
8,288
 | 
4,617
 | 
 
 | 
| Total | 
217,110
 | 
192,935
 | 
 
 | 
| Pass [Member] | Real Estate - Commercial Mortgage [Member] | 
 
 | 
 
 | 
 
 | 
| Financing Receivable, Recorded Investment [Line Items] | 
 
 | 
 
 | 
 
 | 
| 2024 | 
77,561
 | 
117,840
 | 
 
 | 
| 2023 | 
110,183
 | 
275,079
 | 
 
 | 
| 2022 | 
207,574
 | 
135,663
 | 
 
 | 
| 2021 | 
109,863
 | 
101,210
 | 
 
 | 
| 2020 | 
87,369
 | 
43,878
 | 
 
 | 
| Prior | 
122,272
 | 
109,878
 | 
 
 | 
| Revolving Loans | 
26,324
 | 
18,367
 | 
 
 | 
| Total | 
741,146
 | 
801,915
 | 
 
 | 
| Pass [Member] | Real Estate - Residential [Member] | 
 
 | 
 
 | 
 
 | 
| Financing Receivable, Recorded Investment [Line Items] | 
 
 | 
 
 | 
 
 | 
| 2024 | 
165,050
 | 
372,394
 | 
 
 | 
| 2023 | 
316,521
 | 
400,437
 | 
 
 | 
| 2022 | 
358,851
 | 
83,108
 | 
 
 | 
| 2021 | 
71,423
 | 
35,879
 | 
 
 | 
| 2020 | 
31,169
 | 
24,848
 | 
 
 | 
| Prior | 
76,921
 | 
68,685
 | 
 
 | 
| Revolving Loans | 
11,872
 | 
8,252
 | 
 
 | 
| Total | 
1,031,807
 | 
993,603
 | 
 
 | 
| Special Mention [Member] | Commercial, Financial, Agricultural [Member] | 
 
 | 
 
 | 
 
 | 
| Financing Receivable, Recorded Investment [Line Items] | 
 
 | 
 
 | 
 
 | 
| 2024 | 
435
 | 
168
 | 
 
 | 
| 2023 | 
3,979
 | 
608
 | 
 
 | 
| 2022 | 
261
 | 
356
 | 
 
 | 
| 2021 | 
9
 | 
10
 | 
 
 | 
| 2020 | 
0
 | 
9
 | 
 
 | 
| Prior | 
0
 | 
0
 | 
 
 | 
| Revolving Loans | 
76
 | 
76
 | 
 
 | 
| Total | 
4,760
 | 
1,227
 | 
 
 | 
| Special Mention [Member] | Real Estate - Construction [Member] | 
 
 | 
 
 | 
 
 | 
| Financing Receivable, Recorded Investment [Line Items] | 
 
 | 
 
 | 
 
 | 
| 2024 | 
1,555
 | 
631
 | 
 
 | 
| 2023 | 
0
 | 
500
 | 
 
 | 
| 2022 | 
1,329
 | 
539
 | 
 
 | 
| 2021 | 
0
 | 
212
 | 
 
 | 
| 2020 | 
0
 | 
0
 | 
 
 | 
| Prior | 
0
 | 
0
 | 
 
 | 
| Revolving Loans | 
0
 | 
0
 | 
 
 | 
| Total | 
2,884
 | 
1,882
 | 
 
 | 
| Special Mention [Member] | Real Estate - Commercial Mortgage [Member] | 
 
 | 
 
 | 
 
 | 
| Financing Receivable, Recorded Investment [Line Items] | 
 
 | 
 
 | 
 
 | 
| 2024 | 
171
 | 
3,266
 | 
 
 | 
| 2023 | 
2,913
 | 
5,684
 | 
 
 | 
| 2022 | 
17,031
 | 
0
 | 
 
 | 
| 2021 | 
0
 | 
229
 | 
 
 | 
| 2020 | 
2,253
 | 
1,358
 | 
 
 | 
| Prior | 
4,402
 | 
573
 | 
 
 | 
| Revolving Loans | 
530
 | 
0
 | 
 
 | 
| Total | 
27,300
 | 
11,110
 | 
 
 | 
| Special Mention [Member] | Real Estate - Residential [Member] | 
 
 | 
 
 | 
 
 | 
| Financing Receivable, Recorded Investment [Line Items] | 
 
 | 
 
 | 
 
 | 
| 2024 | 
0
 | 
268
 | 
 
 | 
| 2023 | 
265
 | 
89
 | 
 
 | 
| 2022 | 
0
 | 
83
 | 
 
 | 
| 2021 | 
1,104
 | 
502
 | 
 
 | 
| 2020 | 
468
 | 
0
 | 
 
 | 
| Prior | 
534
 | 
313
 | 
 
 | 
| Revolving Loans | 
521
 | 
0
 | 
 
 | 
| Total | 
2,892
 | 
1,255
 | 
 
 | 
| Substandard [Member] | Commercial, Financial, Agricultural [Member] | 
 
 | 
 
 | 
 
 | 
| Financing Receivable, Recorded Investment [Line Items] | 
 
 | 
 
 | 
 
 | 
| 2024 | 
0
 | 
164
 | 
 
 | 
| 2023 | 
0
 | 
177
 | 
 
 | 
| 2022 | 
193
 | 
98
 | 
 
 | 
| 2021 | 
12
 | 
77
 | 
 
 | 
| 2020 | 
58
 | 
20
 | 
 
 | 
| Prior | 
71
 | 
122
 | 
 
 | 
| Revolving Loans | 
71
 | 
161
 | 
 
 | 
| Total | 
405
 | 
819
 | 
 
 | 
| Substandard [Member] | Real Estate - Construction [Member] | 
 
 | 
 
 | 
 
 | 
| Financing Receivable, Recorded Investment [Line Items] | 
 
 | 
 
 | 
 
 | 
| 2024 | 
 
 | 
0
 | 
 
 | 
| 2023 | 
 
 | 
47
 | 
 
 | 
| 2022 | 
 
 | 
576
 | 
 
 | 
| 2021 | 
 
 | 
651
 | 
 
 | 
| 2020 | 
 
 | 
0
 | 
 
 | 
| Prior | 
 
 | 
0
 | 
 
 | 
| Revolving Loans | 
 
 | 
0
 | 
 
 | 
| Total | 
 
 | 
1,274
 | 
 
 | 
| Substandard [Member] | Real Estate - Commercial Mortgage [Member] | 
 
 | 
 
 | 
 
 | 
| Financing Receivable, Recorded Investment [Line Items] | 
 
 | 
 
 | 
 
 | 
| 2024 | 
0
 | 
0
 | 
 
 | 
| 2023 | 
2,463
 | 
1,226
 | 
 
 | 
| 2022 | 
3,403
 | 
6,695
 | 
 
 | 
| 2021 | 
869
 | 
1,637
 | 
 
 | 
| 2020 | 
2,508
 | 
605
 | 
 
 | 
| Prior | 
1,305
 | 
1,574
 | 
 
 | 
| Revolving Loans | 
101
 | 
694
 | 
 
 | 
| Total | 
10,649
 | 
12,431
 | 
 
 | 
| Substandard [Member] | Real Estate - Residential [Member] | 
 
 | 
 
 | 
 
 | 
| Financing Receivable, Recorded Investment [Line Items] | 
 
 | 
 
 | 
 
 | 
| 2024 | 
0
 | 
570
 | 
 
 | 
| 2023 | 
528
 | 
1,110
 | 
 
 | 
| 2022 | 
1,450
 | 
1,906
 | 
 
 | 
| 2021 | 
1,446
 | 
1,626
 | 
 
 | 
| 2020 | 
1,295
 | 
1,007
 | 
 
 | 
| Prior | 
2,918
 | 
3,142
 | 
 
 | 
| Revolving Loans | 
168
 | 
0
 | 
 
 | 
| Total | 
$ 7,805
 | 
$ 9,361
 | 
 
 |