LOANS HELD FOR INVESTMENT AND ALLOWANCE FOR CREDIT LOSSES (Loans held for investment by years of origination) (Details) - USD ($) |
3 Months Ended | 9 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
Sep. 30, 2024 |
Sep. 30, 2023 |
Sep. 30, 2024 |
Sep. 30, 2023 |
Dec. 31, 2023 |
|
| Financing Receivable, Recorded Investment [Line Items] | |||||
| Total | $ 2,683,096,000 | $ 2,683,096,000 | $ 2,733,918,000 | ||
| Current Period Gross Writeoffs, Total | 2,283,000 | $ 2,075,000 | 6,878,000 | $ 6,705,000 | |
| Commercial, Financial and Agricultural [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2024 | 29,041,000 | 29,041,000 | 57,652,000 | ||
| 2023 | 46,009,000 | 46,009,000 | 67,456,000 | ||
| 2022 | 42,613,000 | 42,613,000 | 29,387,000 | ||
| 2021 | 20,973,000 | 20,973,000 | 10,697,000 | ||
| 2020 | 6,114,000 | 6,114,000 | 7,787,000 | ||
| Prior | 10,574,000 | 10,574,000 | 7,624,000 | ||
| Revolving Loans | 39,301,000 | 39,301,000 | 44,587,000 | ||
| Total | 194,625,000 | 194,625,000 | 225,190,000 | ||
| Current Period Gross Writeoffs, 2024 | 8,000 | 6,000 | |||
| Current Period Gross Writeoffs, 2023 | 248,000 | 252,000 | |||
| Current Period Gross Writeoffs, 2022 | 392,000 | 65,000 | |||
| Current Period Gross Writeoffs, 2021 | 86,000 | 31,000 | |||
| Current Period Gross Writeoffs, 2020 | 124,000 | 41,000 | |||
| Current Period Gross Writeoffs, Prior | 0 | 19,000 | |||
| Current Period Gross Writeoffs, Revolving | 155,000 | 97,000 | |||
| Current Period Gross Writeoffs, Total | 331,000 | 76,000 | 1,013,000 | 294,000 | 511,000 |
| Commercial, Financial and Agricultural [Member] | Pass [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2024 | 28,841,000 | 28,841,000 | 57,320,000 | ||
| 2023 | 45,675,000 | 45,675,000 | 66,671,000 | ||
| 2022 | 41,999,000 | 41,999,000 | 28,933,000 | ||
| 2021 | 20,867,000 | 20,867,000 | 10,610,000 | ||
| 2020 | 6,012,000 | 6,012,000 | 7,758,000 | ||
| Prior | 10,488,000 | 10,488,000 | 7,502,000 | ||
| Revolving Loans | 39,124,000 | 39,124,000 | 44,350,000 | ||
| Total | 193,006,000 | 193,006,000 | 223,144,000 | ||
| Commercial, Financial and Agricultural [Member] | Special Mention [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2024 | 200,000 | 200,000 | 168,000 | ||
| 2023 | 309,000 | 309,000 | 608,000 | ||
| 2022 | 393,000 | 393,000 | 356,000 | ||
| 2021 | 18,000 | 18,000 | 10,000 | ||
| 2020 | 2,000 | 2,000 | 9,000 | ||
| Prior | 0 | 0 | 0 | ||
| Revolving Loans | 79,000 | 79,000 | 76,000 | ||
| Total | 1,001,000 | 1,001,000 | 1,227,000 | ||
| Commercial, Financial and Agricultural [Member] | Substandard [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2024 | 0 | 0 | 164,000 | ||
| 2023 | 25,000 | 25,000 | 177,000 | ||
| 2022 | 221,000 | 221,000 | 98,000 | ||
| 2021 | 88,000 | 88,000 | 77,000 | ||
| 2020 | 100,000 | 100,000 | 20,000 | ||
| Prior | 86,000 | 86,000 | 122,000 | ||
| Revolving Loans | 98,000 | 98,000 | 161,000 | ||
| Total | 618,000 | 618,000 | 819,000 | ||
| Real Estate - Construction [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2024 | 76,433,000 | 76,433,000 | 102,315,000 | ||
| 2023 | 101,277,000 | 101,277,000 | 68,812,000 | ||
| 2022 | 35,933,000 | 35,933,000 | 19,296,000 | ||
| 2021 | 4,404,000 | 4,404,000 | 863,000 | ||
| 2020 | 0 | 0 | 188,000 | ||
| Prior | 185,000 | 185,000 | 0 | ||
| Revolving Loans | 667,000 | 667,000 | 4,617,000 | ||
| Total | 218,899,000 | 218,899,000 | 196,091,000 | ||
| Current Period Gross Writeoffs, Total | 0 | 0 | 0 | 0 | |
| Real Estate - Construction [Member] | Pass [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2024 | 72,961,000 | 72,961,000 | 101,684,000 | ||
| 2023 | 101,277,000 | 101,277,000 | 68,265,000 | ||
| 2022 | 34,631,000 | 34,631,000 | 18,181,000 | ||
| 2021 | 4,129,000 | 4,129,000 | 0 | ||
| 2020 | 0 | 0 | 188,000 | ||
| Prior | 185,000 | 185,000 | 0 | ||
| Revolving Loans | 667,000 | 667,000 | 4,617,000 | ||
| Total | 213,850,000 | 213,850,000 | 192,935,000 | ||
| Real Estate - Construction [Member] | Special Mention [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2024 | 3,472,000 | 3,472,000 | 631,000 | ||
| 2023 | 0 | 0 | 500,000 | ||
| 2022 | 1,255,000 | 1,255,000 | 539,000 | ||
| 2021 | 0 | 0 | 212,000 | ||
| 2020 | 0 | 0 | 0 | ||
| Prior | 0 | 0 | 0 | ||
| Revolving Loans | 0 | 0 | 0 | ||
| Total | 4,727,000 | 4,727,000 | 1,882,000 | ||
| Real Estate - Construction [Member] | Substandard [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2024 | 0 | 0 | 0 | ||
| 2023 | 0 | 0 | 47,000 | ||
| 2022 | 47,000 | 47,000 | 576,000 | ||
| 2021 | 275,000 | 275,000 | 651,000 | ||
| 2020 | 0 | 0 | 0 | ||
| Prior | 0 | 0 | 0 | ||
| Revolving Loans | 0 | 0 | 0 | ||
| Total | 322,000 | 322,000 | 1,274,000 | ||
| Real Estate - Commercial Mortgage [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2024 | 66,090,000 | 66,090,000 | 121,106,000 | ||
| 2023 | 122,966,000 | 122,966,000 | 281,989,000 | ||
| 2022 | 252,419,000 | 252,419,000 | 142,358,000 | ||
| 2021 | 124,958,000 | 124,958,000 | 103,076,000 | ||
| 2020 | 93,857,000 | 93,857,000 | 45,841,000 | ||
| Prior | 135,121,000 | 135,121,000 | 112,025,000 | ||
| Revolving Loans | 24,544,000 | 24,544,000 | 19,061,000 | ||
| Total | 819,955,000 | 819,955,000 | 825,456,000 | ||
| 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 | 120,000 | |||
| Current Period Gross Writeoffs, Revolving | 3,000 | 0 | |||
| Current Period Gross Writeoffs, Total | 3,000 | 0 | 3,000 | 120,000 | 120,000 |
| Real Estate - Commercial Mortgage [Member] | Pass [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2024 | 60,755,000 | 60,755,000 | 117,840,000 | ||
| 2023 | 117,689,000 | 117,689,000 | 275,079,000 | ||
| 2022 | 234,557,000 | 234,557,000 | 135,663,000 | ||
| 2021 | 124,203,000 | 124,203,000 | 101,210,000 | ||
| 2020 | 90,813,000 | 90,813,000 | 43,878,000 | ||
| Prior | 128,123,000 | 128,123,000 | 109,878,000 | ||
| Revolving Loans | 23,897,000 | 23,897,000 | 18,367,000 | ||
| Total | 780,037,000 | 780,037,000 | 801,915,000 | ||
| Real Estate - Commercial Mortgage [Member] | Special Mention [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2024 | 173,000 | 173,000 | 3,266,000 | ||
| 2023 | 2,947,000 | 2,947,000 | 5,684,000 | ||
| 2022 | 14,385,000 | 14,385,000 | 0 | ||
| 2021 | 0 | 0 | 229,000 | ||
| 2020 | 518,000 | 518,000 | 1,358,000 | ||
| Prior | 5,349,000 | 5,349,000 | 573,000 | ||
| Revolving Loans | 647,000 | 647,000 | 0 | ||
| Total | 24,019,000 | 24,019,000 | 11,110,000 | ||
| Real Estate - Commercial Mortgage [Member] | Substandard [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2024 | 5,162,000 | 5,162,000 | 0 | ||
| 2023 | 2,330,000 | 2,330,000 | 1,226,000 | ||
| 2022 | 3,477,000 | 3,477,000 | 6,695,000 | ||
| 2021 | 755,000 | 755,000 | 1,637,000 | ||
| 2020 | 2,526,000 | 2,526,000 | 605,000 | ||
| Prior | 1,649,000 | 1,649,000 | 1,574,000 | ||
| Revolving Loans | 0 | 0 | 694,000 | ||
| Total | 15,899,000 | 15,899,000 | 12,431,000 | ||
| Real Estate - Residential [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2024 | 117,374,000 | 117,374,000 | 373,232,000 | ||
| 2023 | 330,561,000 | 330,561,000 | 401,636,000 | ||
| 2022 | 369,964,000 | 369,964,000 | 85,097,000 | ||
| 2021 | 76,460,000 | 76,460,000 | 38,007,000 | ||
| 2020 | 33,778,000 | 33,778,000 | 25,855,000 | ||
| Prior | 84,691,000 | 84,691,000 | 72,140,000 | ||
| Revolving Loans | 11,118,000 | 11,118,000 | 8,252,000 | ||
| Total | 1,023,946,000 | 1,023,946,000 | 1,004,219,000 | ||
| Current Period Gross Writeoffs, 2024 | 0 | 0 | |||
| Current Period Gross Writeoffs, 2023 | 13,000 | 0 | |||
| Current Period Gross Writeoffs, 2022 | 0 | 79,000 | |||
| Current Period Gross Writeoffs, 2021 | 0 | 0 | |||
| Current Period Gross Writeoffs, 2020 | 0 | 0 | |||
| Current Period Gross Writeoffs, Prior | 4,000 | 0 | |||
| Current Period Gross Writeoffs, Revolving | 0 | 0 | |||
| Current Period Gross Writeoffs, Total | 0 | 0 | 17,000 | 0 | 79,000 |
| Real Estate - Residential [Member] | Pass [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2024 | 117,374,000 | 117,374,000 | 372,394,000 | ||
| 2023 | 330,178,000 | 330,178,000 | 400,437,000 | ||
| 2022 | 367,873,000 | 367,873,000 | 83,108,000 | ||
| 2021 | 72,716,000 | 72,716,000 | 35,879,000 | ||
| 2020 | 31,994,000 | 31,994,000 | 24,848,000 | ||
| Prior | 80,541,000 | 80,541,000 | 68,685,000 | ||
| Revolving Loans | 11,118,000 | 11,118,000 | 8,252,000 | ||
| Total | 1,011,794,000 | 1,011,794,000 | 993,603,000 | ||
| Real Estate - Residential [Member] | Special Mention [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2024 | 0 | 0 | 268,000 | ||
| 2023 | 266,000 | 266,000 | 89,000 | ||
| 2022 | 0 | 0 | 83,000 | ||
| 2021 | 1,176,000 | 1,176,000 | 502,000 | ||
| 2020 | 611,000 | 611,000 | 0 | ||
| Prior | 554,000 | 554,000 | 313,000 | ||
| Revolving Loans | 0 | 0 | 0 | ||
| Total | 2,607,000 | 2,607,000 | 1,255,000 | ||
| Real Estate - Residential [Member] | Substandard [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2024 | 0 | 0 | 570,000 | ||
| 2023 | 117,000 | 117,000 | 1,110,000 | ||
| 2022 | 2,091,000 | 2,091,000 | 1,906,000 | ||
| 2021 | 2,568,000 | 2,568,000 | 1,626,000 | ||
| 2020 | 1,173,000 | 1,173,000 | 1,007,000 | ||
| Prior | 3,596,000 | 3,596,000 | 3,142,000 | ||
| Revolving Loans | 0 | 0 | 0 | ||
| Total | 9,545,000 | 9,545,000 | 9,361,000 | ||
| Real Estate - Home Equity [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2024 | 493,000 | 493,000 | 890,000 | ||
| 2023 | 527,000 | 527,000 | 48,000 | ||
| 2022 | 41,000 | 41,000 | 127,000 | ||
| 2021 | 123,000 | 123,000 | 11,000 | ||
| 2020 | 10,000 | 10,000 | 386,000 | ||
| Prior | 840,000 | 840,000 | 950,000 | ||
| Revolving Loans | 208,954,000 | 208,954,000 | 208,508,000 | ||
| Total | 210,988,000 | 210,988,000 | 210,920,000 | ||
| 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 | 99,000 | 39,000 | |||
| Current Period Gross Writeoffs, Total | 23,000 | 0 | 99,000 | 39,000 | 39,000 |
| Real Estate - Home Equity [Member] | Performing Financial Instruments [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2024 | 493,000 | 493,000 | 890,000 | ||
| 2023 | 527,000 | 527,000 | 48,000 | ||
| 2022 | 41,000 | 41,000 | 127,000 | ||
| 2021 | 123,000 | 123,000 | 11,000 | ||
| 2020 | 10,000 | 10,000 | 386,000 | ||
| Prior | 840,000 | 840,000 | 950,000 | ||
| Revolving Loans | 208,073,000 | 208,073,000 | 207,509,000 | ||
| Total | 210,107,000 | 210,107,000 | 209,921,000 | ||
| Real Estate - Home Equity [Member] | Nonperforming Financial Instruments [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2024 | 0 | 0 | 0 | ||
| 2023 | 0 | 0 | 0 | ||
| 2022 | 0 | 0 | 0 | ||
| 2021 | 0 | 0 | 0 | ||
| 2020 | 0 | 0 | 0 | ||
| Prior | 0 | 0 | 0 | ||
| Revolving Loans | 881,000 | 881,000 | 999,000 | ||
| Total | 881,000 | 881,000 | 999,000 | ||
| Consumer [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2024 | 24,247,000 | 24,247,000 | 68,789,000 | ||
| 2023 | 50,274,000 | 50,274,000 | 90,386,000 | ||
| 2022 | 63,436,000 | 63,436,000 | 70,940,000 | ||
| 2021 | 48,579,000 | 48,579,000 | 21,318,000 | ||
| 2020 | 13,226,000 | 13,226,000 | 10,210,000 | ||
| Prior | 5,863,000 | 5,863,000 | 4,258,000 | ||
| Revolving Loans | 9,058,000 | 9,058,000 | 6,141,000 | ||
| Total | 214,683,000 | 214,683,000 | 272,042,000 | ||
| Current Period Gross Writeoffs, 2024 | 1,871,000 | 3,137,000 | |||
| Current Period Gross Writeoffs, 2023 | 1,142,000 | 3,224,000 | |||
| Current Period Gross Writeoffs, 2022 | 1,690,000 | 1,362,000 | |||
| Current Period Gross Writeoffs, 2021 | 684,000 | 329,000 | |||
| Current Period Gross Writeoffs, 2020 | 144,000 | 230,000 | |||
| Current Period Gross Writeoffs, Prior | 72,000 | 99,000 | |||
| Current Period Gross Writeoffs, Revolving | 143,000 | 162,000 | |||
| Current Period Gross Writeoffs, Total | 1,926,000 | $ 1,999,000 | 5,746,000 | $ 6,252,000 | 8,543,000 |
| Consumer [Member] | Performing Financial Instruments [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2024 | 24,067,000 | 24,067,000 | 68,496,000 | ||
| 2023 | 49,898,000 | 49,898,000 | 90,031,000 | ||
| 2022 | 63,085,000 | 63,085,000 | 70,882,000 | ||
| 2021 | 48,338,000 | 48,338,000 | 21,314,000 | ||
| 2020 | 13,116,000 | 13,116,000 | 10,210,000 | ||
| Prior | 5,851,000 | 5,851,000 | 4,258,000 | ||
| Revolving Loans | 9,045,000 | 9,045,000 | 5,431,000 | ||
| Total | 213,400,000 | 213,400,000 | 270,622,000 | ||
| Consumer [Member] | Nonperforming Financial Instruments [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2024 | 180,000 | 180,000 | 293,000 | ||
| 2023 | 376,000 | 376,000 | 355,000 | ||
| 2022 | 351,000 | 351,000 | 58,000 | ||
| 2021 | 241,000 | 241,000 | 4,000 | ||
| 2020 | 110,000 | 110,000 | 0 | ||
| Prior | 12,000 | 12,000 | 0 | ||
| Revolving Loans | 13,000 | 13,000 | 710,000 | ||
| Total | $ 1,283,000 | $ 1,283,000 | $ 1,420,000 | ||