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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Analysis of Past-Due Loans (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Total Loans | $ 20,992,603 | $ 20,269,303
Loans 90 Days or More Past Due and Still Accruing | 15,909 | 16,988
Total Loans Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 284,187 | 272,839
Loans 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 82,299 | 82,850
Loans 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 32,491 | 34,281
Loans 90 or More Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 169,397 | 155,708
Current Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 20,708,416 | 19,996,464
Commercial, financial and agricultural |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 2,860,973 | 2,688,929
Loans 90 Days or More Past Due and Still Accruing | 4,160 | 5,310
Commercial, financial and agricultural | Total Loans Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 24,138 | 26,195
Commercial, financial and agricultural | Loans 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 9,531 | 11,023
Commercial, financial and agricultural | Loans 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 6,182 | 5,439
Commercial, financial and agricultural | Loans 90 or More Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 8,425 | 9,733
Commercial, financial and agricultural | Current Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 2,836,835 | 2,662,734
Consumer |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 217,787 | 241,552
Loans 90 Days or More Past Due and Still Accruing | 0 | 0
Consumer | Total Loans Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 2,028 | 3,690
Consumer | Loans 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 1,251 | 2,155
Consumer | Loans 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 552 | 1,037
Consumer | Loans 90 or More Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 225 | 498
Consumer | Current Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 215,759 | 237,862
Indirect automobile |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 16,335 | 34,257
Loans 90 Days or More Past Due and Still Accruing | 0 | 0
Indirect automobile | Total Loans Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 148 | 248
Indirect automobile | Loans 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 70 | 153
Indirect automobile | Loans 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 15 | 17
Indirect automobile | Loans 90 or More Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 63 | 78
Indirect automobile | Current Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 16,187 | 34,009
Mortgage warehouse |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 1,070,921 | 818,728
Loans 90 Days or More Past Due and Still Accruing | 0 | 0
Mortgage warehouse | Total Loans Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 0 | 0
Mortgage warehouse | Loans 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 0 | 0
Mortgage warehouse | Loans 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 0 | 0
Mortgage warehouse | Loans 90 or More Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 0 | 0
Mortgage warehouse | Current Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 1,070,921 | 818,728
Municipal |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 454,967 | 492,668
Loans 90 Days or More Past Due and Still Accruing | 0 | 0
Municipal | Total Loans Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 0 | 0
Municipal | Loans 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 0 | 0
Municipal | Loans 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 0 | 0
Municipal | Loans 90 or More Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 0 | 0
Municipal | Current Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 454,967 | 492,668
Premium finance |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 1,151,261 | 946,562
Loans 90 Days or More Past Due and Still Accruing | 11,416 | 11,678
Premium finance | Total Loans Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 28,346 | 30,889
Premium finance | Loans 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 8,773 | 12,379
Premium finance | Loans 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 8,158 | 6,832
Premium finance | Loans 90 or More Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 11,415 | 11,678
Premium finance | Current Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 1,122,915 | 915,673
Real estate – construction and development |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 2,336,987 | 2,129,187
Loans 90 Days or More Past Due and Still Accruing | 0 | 0
Real estate – construction and development | Total Loans Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 4,464 | 2,376
Real estate – construction and development | Loans 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 562 | 2,094
Real estate – construction and development | Loans 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 337 | 0
Real estate – construction and development | Loans 90 or More Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 3,565 | 282
Real estate – construction and development | Current Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 2,332,523 | 2,126,811
Real estate – commercial and farmland |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 8,103,634 | 8,059,754
Loans 90 Days or More Past Due and Still Accruing | 333 | 0
Real estate – commercial and farmland | Total Loans Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 11,963 | 13,078
Real estate – commercial and farmland | Loans 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 3,989 | 5,070
Real estate – commercial and farmland | Loans 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 1,999 | 1,656
Real estate – commercial and farmland | Loans 90 or More Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 5,975 | 6,352
Real estate – commercial and farmland | Current Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 8,091,671 | 8,046,676
Real estate – residential |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 4,779,738 | 4,857,666
Loans 90 Days or More Past Due and Still Accruing | 0 | 0
Real estate – residential | Total Loans Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 213,100 | 196,363
Real estate – residential | Loans 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 58,123 | 49,976
Real estate – residential | Loans 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 15,248 | 19,300
Real estate – residential | Loans 90 or More Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | 139,729 | 127,087
Real estate – residential | Current Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Total Loans | $ 4,566,638 | $ 4,661,303

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