LOANS HELD FOR INVESTMENT AND ALLOWANCE FOR CREDIT LOSSES (Loans Held for Investment by Years of Origination) (Details) - USD ($) |
3 Months Ended | 6 Months Ended | 12 Months Ended | ||
|---|---|---|---|---|---|
Jun. 30, 2026 |
Jun. 30, 2025 |
Jun. 30, 2026 |
Jun. 30, 2025 |
Dec. 31, 2025 |
|
| Financing Receivable, Recorded Investment [Line Items] | |||||
| Total | $ 2,499,871,000 | $ 2,499,871,000 | $ 2,546,118,000 | ||
| Current Period Gross Writeoffs, Total | 1,752,000 | $ 1,498,000 | 3,548,000 | $ 3,109,000 | |
| Commercial, Financial and Agricultural [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2026 | 22,574,000 | 22,574,000 | 38,002,000 | ||
| 2025 | 31,522,000 | 31,522,000 | 23,692,000 | ||
| 2024 | 18,704,000 | 18,704,000 | 25,742,000 | ||
| 2023 | 18,050,000 | 18,050,000 | 23,376,000 | ||
| 2022 | 17,788,000 | 17,788,000 | 10,942,000 | ||
| Prior | 15,352,000 | 15,352,000 | 8,956,000 | ||
| Revolving Loans | 48,546,000 | 48,546,000 | 49,631,000 | ||
| Total | 172,536,000 | 172,536,000 | 180,341,000 | ||
| Current Period Gross Writeoffs, 2026 | 0 | 0 | |||
| Current Period Gross Writeoffs, 2025 | 82,000 | 209,000 | |||
| Current Period Gross Writeoffs, 2024 | 81,000 | 114,000 | |||
| Current Period Gross Writeoffs, 2023 | 216,000 | 344,000 | |||
| Current Period Gross Writeoffs, 2022 | 165,000 | 70,000 | |||
| Current Period Gross Writeoffs, Prior | 7,000 | 1,000 | |||
| Current Period Gross Writeoffs, Revolving | 326,000 | 44,000 | |||
| Current Period Gross Writeoffs, Total | 577,000 | 74,000 | 877,000 | 242,000 | 782,000 |
| Commercial, Financial and Agricultural [Member] | Pass [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2026 | 22,502,000 | 22,502,000 | 37,680,000 | ||
| 2025 | 31,522,000 | 31,522,000 | 23,425,000 | ||
| 2024 | 18,553,000 | 18,553,000 | 22,907,000 | ||
| 2023 | 15,458,000 | 15,458,000 | 23,068,000 | ||
| 2022 | 17,724,000 | 17,724,000 | 10,922,000 | ||
| Prior | 15,347,000 | 15,347,000 | 8,740,000 | ||
| Revolving Loans | 46,644,000 | 46,644,000 | 48,354,000 | ||
| Total | 167,750,000 | 167,750,000 | 175,096,000 | ||
| Commercial, Financial and Agricultural [Member] | Special Mention [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2026 | 0 | 0 | 322,000 | ||
| 2025 | 0 | 0 | 121,000 | ||
| 2024 | 41,000 | 41,000 | 2,740,000 | ||
| 2023 | 2,539,000 | 2,539,000 | 63,000 | ||
| 2022 | 0 | 0 | 4,000 | ||
| Prior | 0 | 0 | 180,000 | ||
| Revolving Loans | 770,000 | 770,000 | 163,000 | ||
| Total | 3,350,000 | 3,350,000 | 3,593,000 | ||
| Commercial, Financial and Agricultural [Member] | Substandard [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2026 | 72,000 | 72,000 | 0 | ||
| 2025 | 0 | 0 | 146,000 | ||
| 2024 | 110,000 | 110,000 | 95,000 | ||
| 2023 | 53,000 | 53,000 | 245,000 | ||
| 2022 | 64,000 | 64,000 | 16,000 | ||
| Prior | 5,000 | 5,000 | 36,000 | ||
| Revolving Loans | 1,132,000 | 1,132,000 | 1,114,000 | ||
| Total | 1,436,000 | 1,436,000 | 1,652,000 | ||
| Real Estate - Construction [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2026 | 28,895,000 | 28,895,000 | 76,850,000 | ||
| 2025 | 90,468,000 | 90,468,000 | 39,024,000 | ||
| 2024 | 9,848,000 | 9,848,000 | 4,388,000 | ||
| 2023 | 2,721,000 | 2,721,000 | 17,123,000 | ||
| 2022 | 10,588,000 | 10,588,000 | 53,000 | ||
| Prior | 53,000 | 53,000 | 187,000 | ||
| Revolving Loans | 6,554,000 | 6,554,000 | 9,295,000 | ||
| Total | 149,127,000 | 149,127,000 | 146,920,000 | ||
| Current Period Gross Writeoffs, Total | 0 | 0 | 0 | 0 | |
| Real Estate - Construction [Member] | Pass [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2026 | 28,895,000 | 28,895,000 | 76,850,000 | ||
| 2025 | 90,468,000 | 90,468,000 | 39,024,000 | ||
| 2024 | 9,848,000 | 9,848,000 | 3,298,000 | ||
| 2023 | 2,342,000 | 2,342,000 | 14,996,000 | ||
| 2022 | 9,973,000 | 9,973,000 | 53,000 | ||
| Prior | 53,000 | 53,000 | 187,000 | ||
| Revolving Loans | 6,554,000 | 6,554,000 | 9,295,000 | ||
| Total | 148,133,000 | 148,133,000 | 143,703,000 | ||
| Real Estate - Construction [Member] | Special Mention [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2026 | 0 | 0 | 0 | ||
| 2025 | 0 | 0 | 0 | ||
| 2024 | 0 | 0 | 372,000 | ||
| 2023 | 0 | 0 | 2,127,000 | ||
| 2022 | 615,000 | 615,000 | 0 | ||
| Prior | 0 | 0 | 0 | ||
| Revolving Loans | 0 | 0 | 0 | ||
| Total | 615,000 | 615,000 | 2,499,000 | ||
| Real Estate - Construction [Member] | Substandard [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2026 | 0 | 0 | 0 | ||
| 2025 | 0 | 0 | 0 | ||
| 2024 | 0 | 0 | 718,000 | ||
| 2023 | 379,000 | 379,000 | 0 | ||
| 2022 | 0 | 0 | 0 | ||
| Prior | 0 | 0 | 0 | ||
| Revolving Loans | 0 | 0 | 0 | ||
| Total | 379,000 | 379,000 | 718,000 | ||
| Real Estate - Commercial Mortgage [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2026 | 50,481,000 | 50,481,000 | 104,303,000 | ||
| 2025 | 96,372,000 | 96,372,000 | 82,227,000 | ||
| 2024 | 71,428,000 | 71,428,000 | 107,085,000 | ||
| 2023 | 96,154,000 | 96,154,000 | 195,924,000 | ||
| 2022 | 180,039,000 | 180,039,000 | 97,539,000 | ||
| Prior | 232,178,000 | 232,178,000 | 158,228,000 | ||
| Revolving Loans | 23,985,000 | 23,985,000 | 23,425,000 | ||
| Total | 750,637,000 | 750,637,000 | 768,731,000 | ||
| Current Period Gross Writeoffs, 2026 | 0 | ||||
| Current Period Gross Writeoffs, 2025 | 0 | ||||
| Current Period Gross Writeoffs, 2024 | 0 | ||||
| Current Period Gross Writeoffs, 2023 | 0 | ||||
| Current Period Gross Writeoffs, 2022 | 0 | ||||
| Current Period Gross Writeoffs, Prior | 4,000 | ||||
| Current Period Gross Writeoffs, Revolving | 0 | ||||
| Current Period Gross Writeoffs, Total | 0 | 0 | 0 | 0 | 4,000 |
| Real Estate - Commercial Mortgage [Member] | Pass [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2026 | 49,678,000 | 49,678,000 | 93,723,000 | ||
| 2025 | 81,993,000 | 81,993,000 | 76,348,000 | ||
| 2024 | 66,431,000 | 66,431,000 | 101,262,000 | ||
| 2023 | 92,599,000 | 92,599,000 | 174,959,000 | ||
| 2022 | 150,330,000 | 150,330,000 | 92,388,000 | ||
| Prior | 221,684,000 | 221,684,000 | 152,307,000 | ||
| Revolving Loans | 22,532,000 | 22,532,000 | 22,555,000 | ||
| Total | 685,247,000 | 685,247,000 | 713,542,000 | ||
| Real Estate - Commercial Mortgage [Member] | Special Mention [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2026 | 755,000 | 755,000 | 9,830,000 | ||
| 2025 | 7,799,000 | 7,799,000 | 4,477,000 | ||
| 2024 | 0 | 0 | 5,725,000 | ||
| 2023 | 3,458,000 | 3,458,000 | 20,547,000 | ||
| 2022 | 22,818,000 | 22,818,000 | 3,922,000 | ||
| Prior | 7,688,000 | 7,688,000 | 4,074,000 | ||
| Revolving Loans | 1,307,000 | 1,307,000 | 720,000 | ||
| Total | 43,825,000 | 43,825,000 | 49,295,000 | ||
| Real Estate - Commercial Mortgage [Member] | Substandard [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2026 | 48,000 | 48,000 | 750,000 | ||
| 2025 | 6,580,000 | 6,580,000 | 1,402,000 | ||
| 2024 | 3,595,000 | 3,595,000 | 98,000 | ||
| 2023 | 97,000 | 97,000 | 418,000 | ||
| 2022 | 6,891,000 | 6,891,000 | 1,229,000 | ||
| Prior | 2,778,000 | 2,778,000 | 1,847,000 | ||
| Revolving Loans | 146,000 | 146,000 | 150,000 | ||
| Total | 20,135,000 | 20,135,000 | 5,894,000 | ||
| Real Estate - Commercial Mortgage [Member] | Doubtful [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2026 | 0 | 0 | |||
| 2025 | 0 | 0 | |||
| 2024 | 1,402,000 | 1,402,000 | |||
| 2023 | 0 | 0 | |||
| 2022 | 0 | 0 | |||
| Prior | 28,000 | 28,000 | |||
| Revolving Loans | 0 | 0 | |||
| Total | 1,430,000 | 1,430,000 | |||
| Real Estate - Residential [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2026 | 74,553,000 | 74,553,000 | 142,278,000 | ||
| 2025 | 119,803,000 | 119,803,000 | 131,453,000 | ||
| 2024 | 111,848,000 | 111,848,000 | 270,273,000 | ||
| 2023 | 243,615,000 | 243,615,000 | 317,719,000 | ||
| 2022 | 301,871,000 | 301,871,000 | 62,214,000 | ||
| Prior | 139,875,000 | 139,875,000 | 90,693,000 | ||
| Revolving Loans | 9,248,000 | 9,248,000 | 11,060,000 | ||
| Total | 1,000,813,000 | 1,000,813,000 | 1,025,690,000 | ||
| Current Period Gross Writeoffs, 2026 | 0 | 0 | |||
| Current Period Gross Writeoffs, 2025 | 0 | 27,000 | |||
| Current Period Gross Writeoffs, 2024 | 0 | 59,000 | |||
| Current Period Gross Writeoffs, 2023 | 0 | 32,000 | |||
| Current Period Gross Writeoffs, 2022 | 0 | 0 | |||
| Current Period Gross Writeoffs, Prior | 8,000 | 18,000 | |||
| Current Period Gross Writeoffs, Revolving | 30,000 | 0 | |||
| Current Period Gross Writeoffs, Total | 38,000 | 49,000 | 38,000 | 57,000 | 136,000 |
| Real Estate - Residential [Member] | Pass [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2026 | 74,161,000 | 74,161,000 | 142,278,000 | ||
| 2025 | 119,673,000 | 119,673,000 | 130,895,000 | ||
| 2024 | 111,221,000 | 111,221,000 | 269,844,000 | ||
| 2023 | 242,512,000 | 242,512,000 | 316,402,000 | ||
| 2022 | 300,311,000 | 300,311,000 | 59,950,000 | ||
| Prior | 135,148,000 | 135,148,000 | 87,545,000 | ||
| Revolving Loans | 9,248,000 | 9,248,000 | 10,521,000 | ||
| Total | 992,274,000 | 992,274,000 | 1,017,435,000 | ||
| Real Estate - Residential [Member] | Special Mention [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2026 | 354,000 | 354,000 | 0 | ||
| 2025 | 0 | 0 | 0 | ||
| 2024 | 0 | 0 | 0 | ||
| 2023 | 0 | 0 | 116,000 | ||
| 2022 | 114,000 | 114,000 | 954,000 | ||
| Prior | 1,164,000 | 1,164,000 | 807,000 | ||
| Revolving Loans | 0 | 0 | 378,000 | ||
| Total | 1,632,000 | 1,632,000 | 2,255,000 | ||
| Real Estate - Residential [Member] | Substandard [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2026 | 38,000 | 38,000 | 0 | ||
| 2025 | 130,000 | 130,000 | 558,000 | ||
| 2024 | 627,000 | 627,000 | 429,000 | ||
| 2023 | 1,103,000 | 1,103,000 | 1,201,000 | ||
| 2022 | 1,446,000 | 1,446,000 | 1,310,000 | ||
| Prior | 3,563,000 | 3,563,000 | 2,341,000 | ||
| Revolving Loans | 0 | 0 | 161,000 | ||
| Total | 6,907,000 | 6,907,000 | 6,000,000 | ||
| Real Estate - Home Equity [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2026 | 195,000 | 195,000 | 391,000 | ||
| 2025 | 272,000 | 272,000 | 9,000 | ||
| 2024 | 7,000 | 7,000 | 411,000 | ||
| 2023 | 310,000 | 310,000 | 19,000 | ||
| 2022 | 17,000 | 17,000 | 106,000 | ||
| Prior | 642,000 | 642,000 | 587,000 | ||
| Revolving Loans | 243,019,000 | 243,019,000 | 239,374,000 | ||
| Total | 244,462,000 | 244,462,000 | 240,897,000 | ||
| Current Period Gross Writeoffs, 2026 | 0 | 0 | |||
| Current Period Gross Writeoffs, 2025 | 0 | 0 | |||
| 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, Prior | 0 | 9,000 | |||
| Current Period Gross Writeoffs, Revolving | 13,000 | 35,000 | |||
| Current Period Gross Writeoffs, Total | 0 | 24,000 | 13,000 | 24,000 | 44,000 |
| Real Estate - Home Equity [Member] | Performing Financial Instruments [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2026 | 195,000 | 195,000 | 391,000 | ||
| 2025 | 272,000 | 272,000 | 9,000 | ||
| 2024 | 7,000 | 7,000 | 411,000 | ||
| 2023 | 310,000 | 310,000 | 19,000 | ||
| 2022 | 17,000 | 17,000 | 106,000 | ||
| Prior | 642,000 | 642,000 | 587,000 | ||
| Revolving Loans | 241,901,000 | 241,901,000 | 237,678,000 | ||
| Total | 243,344,000 | 243,344,000 | 239,201,000 | ||
| Real Estate - Home Equity [Member] | Nonperforming Financial Instruments [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2026 | 0 | 0 | 0 | ||
| 2025 | 0 | 0 | 0 | ||
| 2024 | 0 | 0 | 0 | ||
| 2023 | 0 | 0 | 0 | ||
| 2022 | 0 | 0 | 0 | ||
| Prior | 0 | 0 | 0 | ||
| Revolving Loans | 1,118,000 | 1,118,000 | 1,696,000 | ||
| Total | 1,118,000 | 1,118,000 | 1,696,000 | ||
| Consumer [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2026 | 40,551,000 | 40,551,000 | 63,629,000 | ||
| 2025 | 51,719,000 | 51,719,000 | 22,057,000 | ||
| 2024 | 17,113,000 | 17,113,000 | 28,068,000 | ||
| 2023 | 21,224,000 | 21,224,000 | 31,679,000 | ||
| 2022 | 22,861,000 | 22,861,000 | 21,596,000 | ||
| Prior | 16,326,000 | 16,326,000 | 5,195,000 | ||
| Revolving Loans | 12,502,000 | 12,502,000 | 11,315,000 | ||
| Total | 182,296,000 | 182,296,000 | 183,539,000 | ||
| Current Period Gross Writeoffs, 2026 | 1,175,000 | 2,789,000 | |||
| Current Period Gross Writeoffs, 2025 | 353,000 | 376,000 | |||
| Current Period Gross Writeoffs, 2024 | 179,000 | 1,003,000 | |||
| Current Period Gross Writeoffs, 2023 | 329,000 | 1,036,000 | |||
| Current Period Gross Writeoffs, 2022 | 286,000 | 454,000 | |||
| Current Period Gross Writeoffs, Prior | 210,000 | 144,000 | |||
| Current Period Gross Writeoffs, Revolving | 88,000 | 152,000 | |||
| Current Period Gross Writeoffs, Total | 1,137,000 | $ 1,351,000 | 2,620,000 | $ 2,786,000 | 5,954,000 |
| Consumer [Member] | Performing Financial Instruments [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2026 | 40,451,000 | 40,451,000 | 63,443,000 | ||
| 2025 | 51,488,000 | 51,488,000 | 21,866,000 | ||
| 2024 | 17,057,000 | 17,057,000 | 27,919,000 | ||
| 2023 | 21,109,000 | 21,109,000 | 31,464,000 | ||
| 2022 | 22,674,000 | 22,674,000 | 21,524,000 | ||
| Prior | 16,189,000 | 16,189,000 | 5,164,000 | ||
| Revolving Loans | 12,502,000 | 12,502,000 | 11,315,000 | ||
| Total | 181,470,000 | 181,470,000 | 182,695,000 | ||
| Consumer [Member] | Nonperforming Financial Instruments [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2026 | 100,000 | 100,000 | 186,000 | ||
| 2025 | 231,000 | 231,000 | 191,000 | ||
| 2024 | 56,000 | 56,000 | 149,000 | ||
| 2023 | 115,000 | 115,000 | 215,000 | ||
| 2022 | 187,000 | 187,000 | 72,000 | ||
| Prior | 137,000 | 137,000 | 31,000 | ||
| Revolving Loans | 0 | 0 | 0 | ||
| Total | $ 826,000 | $ 826,000 | $ 844,000 | ||