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, 2025 |
Sep. 30, 2024 |
Sep. 30, 2025 |
Sep. 30, 2024 |
Dec. 31, 2024 |
|
| Financing Receivable, Recorded Investment [Line Items] | |||||
| Total | $ 2,582,007,000 | $ 2,582,007,000 | $ 2,651,550,000 | ||
| Current Period Gross Writeoffs, Total | 1,968,000 | $ 2,283,000 | 5,077,000 | $ 6,878,000 | |
| Commercial, Financial and Agricultural [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2025 | 28,710,000 | 28,710,000 | 36,031,000 | ||
| 2024 | 27,329,000 | 27,329,000 | 40,414,000 | ||
| 2023 | 28,700,000 | 28,700,000 | 37,960,000 | ||
| 2022 | 26,835,000 | 26,835,000 | 18,454,000 | ||
| 2021 | 13,699,000 | 13,699,000 | 4,668,000 | ||
| Prior | 9,731,000 | 9,731,000 | 9,814,000 | ||
| Revolving Loans | 44,014,000 | 44,014,000 | 41,867,000 | ||
| Total | 179,018,000 | 179,018,000 | 189,208,000 | ||
| Current Period Gross Writeoffs, 2025 | 0 | 9,000 | |||
| Current Period Gross Writeoffs, 2024 | 148,000 | 548,000 | |||
| Current Period Gross Writeoffs, 2023 | 60,000 | 500,000 | |||
| Current Period Gross Writeoffs, 2022 | 327,000 | 111,000 | |||
| Current Period Gross Writeoffs, 2021 | 58,000 | 160,000 | |||
| Current Period Gross Writeoffs, Prior | 1,000 | 1,000 | |||
| Current Period Gross Writeoffs, Revolving | 21,000 | 183,000 | |||
| Current Period Gross Writeoffs, Total | 373,000 | 331,000 | 615,000 | 1,013,000 | 1,512,000 |
| Commercial, Financial and Agricultural [Member] | Pass [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2025 | 28,710,000 | 28,710,000 | 35,596,000 | ||
| 2024 | 27,329,000 | 27,329,000 | 36,435,000 | ||
| 2023 | 25,719,000 | 25,719,000 | 37,506,000 | ||
| 2022 | 26,672,000 | 26,672,000 | 18,433,000 | ||
| 2021 | 13,671,000 | 13,671,000 | 4,610,000 | ||
| Prior | 9,439,000 | 9,439,000 | 9,743,000 | ||
| Revolving Loans | 41,051,000 | 41,051,000 | 41,720,000 | ||
| Total | 172,591,000 | 172,591,000 | 184,043,000 | ||
| Commercial, Financial and Agricultural [Member] | Special Mention [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2025 | 0 | 0 | 435,000 | ||
| 2024 | 0 | 0 | 3,979,000 | ||
| 2023 | 2,851,000 | 2,851,000 | 261,000 | ||
| 2022 | 81,000 | 81,000 | 9,000 | ||
| 2021 | 9,000 | 9,000 | 0 | ||
| Prior | 250,000 | 250,000 | 0 | ||
| Revolving Loans | 1,722,000 | 1,722,000 | 76,000 | ||
| Total | 4,913,000 | 4,913,000 | 4,760,000 | ||
| Commercial, Financial and Agricultural [Member] | Substandard [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2025 | 0 | 0 | 0 | ||
| 2024 | 0 | 0 | 0 | ||
| 2023 | 130,000 | 130,000 | 193,000 | ||
| 2022 | 82,000 | 82,000 | 12,000 | ||
| 2021 | 19,000 | 19,000 | 58,000 | ||
| Prior | 42,000 | 42,000 | 71,000 | ||
| Revolving Loans | 1,241,000 | 1,241,000 | 71,000 | ||
| Total | 1,514,000 | 1,514,000 | 405,000 | ||
| Real Estate - Construction [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2025 | 50,730,000 | 50,730,000 | 106,703,000 | ||
| 2024 | 63,161,000 | 63,161,000 | 73,615,000 | ||
| 2023 | 10,728,000 | 10,728,000 | 31,150,000 | ||
| 2022 | 16,872,000 | 16,872,000 | 53,000 | ||
| 2021 | 53,000 | 53,000 | 0 | ||
| Prior | 190,000 | 190,000 | 185,000 | ||
| Revolving Loans | 15,022,000 | 15,022,000 | 8,288,000 | ||
| Total | 156,756,000 | 156,756,000 | 219,994,000 | ||
| Current Period Gross Writeoffs, 2025 | 0 | ||||
| Current Period Gross Writeoffs, 2024 | 0 | ||||
| Current Period Gross Writeoffs, 2023 | 47,000 | ||||
| Current Period Gross Writeoffs, 2022 | 0 | ||||
| Current Period Gross Writeoffs, 2021 | 0 | ||||
| Current Period Gross Writeoffs, Prior | 0 | ||||
| Current Period Gross Writeoffs, Revolving | 0 | ||||
| Current Period Gross Writeoffs, Total | 0 | 0 | 0 | 0 | 47,000 |
| Real Estate - Construction [Member] | Pass [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2025 | 50,730,000 | 50,730,000 | 105,148,000 | ||
| 2024 | 63,161,000 | 63,161,000 | 73,615,000 | ||
| 2023 | 10,010,000 | 10,010,000 | 29,821,000 | ||
| 2022 | 14,284,000 | 14,284,000 | 53,000 | ||
| 2021 | 53,000 | 53,000 | 0 | ||
| Prior | 190,000 | 190,000 | 185,000 | ||
| Revolving Loans | 15,022,000 | 15,022,000 | 8,288,000 | ||
| Total | 153,450,000 | 153,450,000 | 217,110,000 | ||
| Real Estate - Construction [Member] | Special Mention [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2025 | 0 | 0 | 1,555,000 | ||
| 2024 | 0 | 0 | 0 | ||
| 2023 | 0 | 0 | 1,329,000 | ||
| 2022 | 2,588,000 | 2,588,000 | 0 | ||
| 2021 | 0 | 0 | 0 | ||
| Prior | 0 | 0 | 0 | ||
| Revolving Loans | 0 | 0 | 0 | ||
| Total | 2,588,000 | 2,588,000 | 2,884,000 | ||
| Real Estate - Construction [Member] | Substandard [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2025 | 0 | 0 | |||
| 2024 | 0 | 0 | |||
| 2023 | 718,000 | 718,000 | |||
| 2022 | 0 | 0 | |||
| 2021 | 0 | 0 | |||
| Prior | 0 | 0 | |||
| Revolving Loans | 0 | 0 | |||
| Total | 718,000 | 718,000 | |||
| Real Estate - Commercial Mortgage [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2025 | 78,317,000 | 78,317,000 | 77,732,000 | ||
| 2024 | 83,846,000 | 83,846,000 | 115,559,000 | ||
| 2023 | 114,368,000 | 114,368,000 | 228,008,000 | ||
| 2022 | 207,671,000 | 207,671,000 | 110,732,000 | ||
| 2021 | 100,205,000 | 100,205,000 | 92,130,000 | ||
| Prior | 174,041,000 | 174,041,000 | 127,979,000 | ||
| Revolving Loans | 26,842,000 | 26,842,000 | 26,955,000 | ||
| Total | 785,290,000 | 785,290,000 | 779,095,000 | ||
| 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, 2021 | 0 | ||||
| Current Period Gross Writeoffs, Prior | 0 | ||||
| Current Period Gross Writeoffs, Revolving | 3,000 | ||||
| Current Period Gross Writeoffs, Total | 0 | 3,000 | 0 | 3,000 | 3,000 |
| Real Estate - Commercial Mortgage [Member] | Pass [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2025 | 74,048,000 | 74,048,000 | 77,561,000 | ||
| 2024 | 82,444,000 | 82,444,000 | 110,183,000 | ||
| 2023 | 108,719,000 | 108,719,000 | 207,574,000 | ||
| 2022 | 180,457,000 | 180,457,000 | 109,863,000 | ||
| 2021 | 95,397,000 | 95,397,000 | 87,369,000 | ||
| Prior | 162,220,000 | 162,220,000 | 122,272,000 | ||
| Revolving Loans | 25,699,000 | 25,699,000 | 26,324,000 | ||
| Total | 728,984,000 | 728,984,000 | 741,146,000 | ||
| Real Estate - Commercial Mortgage [Member] | Special Mention [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2025 | 3,885,000 | 3,885,000 | 171,000 | ||
| 2024 | 0 | 0 | 2,913,000 | ||
| 2023 | 5,550,000 | 5,550,000 | 17,031,000 | ||
| 2022 | 23,406,000 | 23,406,000 | 0 | ||
| 2021 | 3,948,000 | 3,948,000 | 2,253,000 | ||
| Prior | 6,663,000 | 6,663,000 | 4,402,000 | ||
| Revolving Loans | 1,143,000 | 1,143,000 | 530,000 | ||
| Total | 44,595,000 | 44,595,000 | 27,300,000 | ||
| Real Estate - Commercial Mortgage [Member] | Substandard [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2025 | 384,000 | 384,000 | 0 | ||
| 2024 | 1,402,000 | 1,402,000 | 2,463,000 | ||
| 2023 | 99,000 | 99,000 | 3,403,000 | ||
| 2022 | 3,808,000 | 3,808,000 | 869,000 | ||
| 2021 | 860,000 | 860,000 | 2,508,000 | ||
| Prior | 5,158,000 | 5,158,000 | 1,305,000 | ||
| Revolving Loans | 0 | 0 | 101,000 | ||
| Total | 11,711,000 | 11,711,000 | 10,649,000 | ||
| Real Estate - Residential [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2025 | 115,780,000 | 115,780,000 | 165,050,000 | ||
| 2024 | 137,630,000 | 137,630,000 | 317,314,000 | ||
| 2023 | 286,851,000 | 286,851,000 | 360,301,000 | ||
| 2022 | 328,032,000 | 328,032,000 | 73,973,000 | ||
| 2021 | 64,730,000 | 64,730,000 | 32,932,000 | ||
| Prior | 96,333,000 | 96,333,000 | 80,373,000 | ||
| Revolving Loans | 10,251,000 | 10,251,000 | 12,561,000 | ||
| Total | 1,039,607,000 | 1,039,607,000 | 1,042,504,000 | ||
| Current Period Gross Writeoffs, 2025 | 0 | 0 | |||
| Current Period Gross Writeoffs, 2024 | 0 | 13,000 | |||
| Current Period Gross Writeoffs, 2023 | 59,000 | 0 | |||
| Current Period Gross Writeoffs, 2022 | 0 | 0 | |||
| Current Period Gross Writeoffs, 2021 | 0 | 0 | |||
| Current Period Gross Writeoffs, Prior | 10,000 | 48,000 | |||
| Current Period Gross Writeoffs, Revolving | 0 | 0 | |||
| Current Period Gross Writeoffs, Total | 12,000 | 0 | 69,000 | 17,000 | 61,000 |
| Real Estate - Residential [Member] | Pass [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2025 | 115,780,000 | 115,780,000 | 165,050,000 | ||
| 2024 | 133,764,000 | 133,764,000 | 316,521,000 | ||
| 2023 | 286,851,000 | 286,851,000 | 358,851,000 | ||
| 2022 | 326,723,000 | 326,723,000 | 71,423,000 | ||
| 2021 | 62,441,000 | 62,441,000 | 31,169,000 | ||
| Prior | 92,274,000 | 92,274,000 | 76,921,000 | ||
| Revolving Loans | 9,682,000 | 9,682,000 | 11,872,000 | ||
| Total | 1,027,515,000 | 1,027,515,000 | 1,031,807,000 | ||
| Real Estate - Residential [Member] | Special Mention [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2025 | 0 | 0 | 0 | ||
| 2024 | 0 | 0 | 265,000 | ||
| 2023 | 0 | 0 | 0 | ||
| 2022 | 0 | 0 | 1,104,000 | ||
| 2021 | 975,000 | 975,000 | 468,000 | ||
| Prior | 277,000 | 277,000 | 534,000 | ||
| Revolving Loans | 401,000 | 401,000 | 521,000 | ||
| Total | 1,653,000 | 1,653,000 | 2,892,000 | ||
| Real Estate - Residential [Member] | Substandard [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2025 | 0 | 0 | 0 | ||
| 2024 | 3,866,000 | 3,866,000 | 528,000 | ||
| 2023 | 0 | 0 | 1,450,000 | ||
| 2022 | 1,309,000 | 1,309,000 | 1,446,000 | ||
| 2021 | 1,314,000 | 1,314,000 | 1,295,000 | ||
| Prior | 3,782,000 | 3,782,000 | 2,918,000 | ||
| Revolving Loans | 168,000 | 168,000 | 168,000 | ||
| Total | 10,439,000 | 10,439,000 | 7,805,000 | ||
| Real Estate - Home Equity [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2025 | 1,674,000 | 1,674,000 | 801,000 | ||
| 2024 | 9,000 | 9,000 | 521,000 | ||
| 2023 | 439,000 | 439,000 | 30,000 | ||
| 2022 | 19,000 | 19,000 | 119,000 | ||
| 2021 | 109,000 | 109,000 | 9,000 | ||
| Prior | 638,000 | 638,000 | 821,000 | ||
| Revolving Loans | 231,223,000 | 231,223,000 | 217,763,000 | ||
| Total | 234,111,000 | 234,111,000 | 220,064,000 | ||
| 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, 2021 | 0 | 0 | |||
| Current Period Gross Writeoffs, Prior | 10,000 | 0 | |||
| Current Period Gross Writeoffs, Revolving | 24,000 | 132,000 | |||
| Current Period Gross Writeoffs, Total | 10,000 | 23,000 | 34,000 | 99,000 | 132,000 |
| Real Estate - Home Equity [Member] | Performing Financial Instruments [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2025 | 1,600,000 | 1,600,000 | 801,000 | ||
| 2024 | 9,000 | 9,000 | 521,000 | ||
| 2023 | 439,000 | 439,000 | 30,000 | ||
| 2022 | 19,000 | 19,000 | 119,000 | ||
| 2021 | 109,000 | 109,000 | 9,000 | ||
| Prior | 638,000 | 638,000 | 821,000 | ||
| Revolving Loans | 229,459,000 | 229,459,000 | 215,981,000 | ||
| Total | 232,273,000 | 232,273,000 | 218,282,000 | ||
| Real Estate - Home Equity [Member] | Nonperforming Financial Instruments [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2025 | 74,000 | 74,000 | 0 | ||
| 2024 | 0 | 0 | 0 | ||
| 2023 | 0 | 0 | 0 | ||
| 2022 | 0 | 0 | 0 | ||
| 2021 | 0 | 0 | 0 | ||
| Prior | 0 | 0 | 0 | ||
| Revolving Loans | 1,764,000 | 1,764,000 | 1,782,000 | ||
| Total | 1,838,000 | 1,838,000 | 1,782,000 | ||
| Consumer [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2025 | 51,682,000 | 51,682,000 | 32,303,000 | ||
| 2024 | 24,611,000 | 24,611,000 | 45,169,000 | ||
| 2023 | 31,498,000 | 31,498,000 | 56,263,000 | ||
| 2022 | 36,839,000 | 36,839,000 | 42,158,000 | ||
| 2021 | 26,376,000 | 26,376,000 | 10,957,000 | ||
| Prior | 6,963,000 | 6,963,000 | 4,187,000 | ||
| Revolving Loans | 9,256,000 | 9,256,000 | 9,648,000 | ||
| Total | 187,225,000 | 187,225,000 | 200,685,000 | ||
| Current Period Gross Writeoffs, 2025 | 1,872,000 | 2,562,000 | |||
| Current Period Gross Writeoffs, 2024 | 202,000 | 1,605,000 | |||
| Current Period Gross Writeoffs, 2023 | 792,000 | 2,088,000 | |||
| Current Period Gross Writeoffs, 2022 | 933,000 | 897,000 | |||
| Current Period Gross Writeoffs, 2021 | 352,000 | 237,000 | |||
| Current Period Gross Writeoffs, Prior | 109,000 | 76,000 | |||
| Current Period Gross Writeoffs, Revolving | 99,000 | 162,000 | |||
| Current Period Gross Writeoffs, Total | 1,573,000 | $ 1,926,000 | 4,359,000 | $ 5,746,000 | 7,627,000 |
| Consumer [Member] | Performing Financial Instruments [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2025 | 51,487,000 | 51,487,000 | 32,293,000 | ||
| 2024 | 24,496,000 | 24,496,000 | 44,995,000 | ||
| 2023 | 31,429,000 | 31,429,000 | 55,942,000 | ||
| 2022 | 36,559,000 | 36,559,000 | 42,002,000 | ||
| 2021 | 26,315,000 | 26,315,000 | 10,899,000 | ||
| Prior | 6,955,000 | 6,955,000 | 4,116,000 | ||
| Revolving Loans | 9,256,000 | 9,256,000 | 9,648,000 | ||
| Total | 186,497,000 | 186,497,000 | 199,895,000 | ||
| Consumer [Member] | Nonperforming Financial Instruments [Member] | |||||
| Financing Receivable, Recorded Investment [Line Items] | |||||
| 2025 | 195,000 | 195,000 | 10,000 | ||
| 2024 | 115,000 | 115,000 | 174,000 | ||
| 2023 | 69,000 | 69,000 | 321,000 | ||
| 2022 | 280,000 | 280,000 | 156,000 | ||
| 2021 | 61,000 | 61,000 | 58,000 | ||
| Prior | 8,000 | 8,000 | 71,000 | ||
| Revolving Loans | 0 | 0 | 0 | ||
| Total | $ 728,000 | $ 728,000 | $ 790,000 | ||