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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Past Due Aging of Loan Portfolio by Loan Class (Details) - USD ($) $ in Thousands | Sep. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Loans | $ 12,646,808 | $ 12,486,027
Loans > 90 Days or More Past Due And Accruing | 14,105 | 172
Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 12,551,804 | 12,406,783
30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 30,287 | 34,075
60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 18,773 | 11,189
90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 45,944 | 33,980
Commercial and industrial loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 4,041,217 | 3,670,948
Loans > 90 Days or More Past Due And Accruing | 930 | 86
Commercial and industrial loans | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 4,023,016 | 3,657,447
Commercial and industrial loans | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,906 | 5,021
Commercial and industrial loans | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 7,805 | 1,622
Commercial and industrial loans | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 8,490 | 6,858
Agricultural land, production and other loans to farmers |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 238,743 | 263,414
Loans > 90 Days or More Past Due And Accruing | 0 | 0
Agricultural land, production and other loans to farmers | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 238,221 | 263,414
Agricultural land, production and other loans to farmers | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 522 | 0
Agricultural land, production and other loans to farmers | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
Agricultural land, production and other loans to farmers | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
Construction |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 814,704 | 957,545
Loans > 90 Days or More Past Due And Accruing | 0 | 0
Construction | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 810,536 | 955,588
Construction | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 2,522 | 0
Construction | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,646 | 1,957
Construction | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
Commercial real estate, non-owner occupied |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 2,251,351 | 2,400,839
Loans > 90 Days or More Past Due And Accruing | 12,989 | 0
Commercial real estate, non-owner occupied | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 2,225,782 | 2,376,184
Commercial real estate, non-owner occupied | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 8,680 | 12,995
Commercial real estate, non-owner occupied | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 485 | 195
Commercial real estate, non-owner occupied | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 16,404 | 11,465
Commercial real estate, owner occupied |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,152,751 | 1,162,083
Loans > 90 Days or More Past Due And Accruing | 0 | 0
Commercial real estate, owner occupied | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,150,327 | 1,161,869
Commercial real estate, owner occupied | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 501 | 0
Commercial real estate, owner occupied | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 891 | 104
Commercial real estate, owner occupied | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,032 | 110
Residential |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 2,366,943 | 2,288,921
Loans > 90 Days or More Past Due And Accruing | 166 | 0
Residential | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 2,334,312 | 2,259,496
Residential | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 10,377 | 11,810
Residential | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 6,029 | 5,472
Residential | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 16,225 | 12,143
Home equity |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 641,188 | 617,571
Loans > 90 Days or More Past Due And Accruing | 20 | 52
Home equity | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 632,653 | 608,948
Home equity | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 3,212 | 3,614
Home equity | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,532 | 1,647
Home equity | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 3,791 | 3,362
Individuals' loans for household and other personal expenditures |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 158,480 | 168,388
Loans > 90 Days or More Past Due And Accruing | 0 | 0
Individuals' loans for household and other personal expenditures | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 155,526 | 167,553
Individuals' loans for household and other personal expenditures | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 2,567 | 635
Individuals' loans for household and other personal expenditures | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 385 | 192
Individuals' loans for household and other personal expenditures | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 2 | 8
Public finance and other commercial loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 981,431 | 956,318
Loans > 90 Days or More Past Due And Accruing | 0 | 34
Public finance and other commercial loans | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 981,431 | 956,284
Public finance and other commercial loans | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
Public finance and other commercial loans | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 0
Public finance and other commercial loans | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | $ 0 | $ 34

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