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LOANS AND ALLOWANCE FOR CREDIT LOSSES - Summary of Past Due Aging of Loan Portfolio by Loan Class (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Loans | $ 13,591,174 | $ 12,854,359
Loans > 90 Days or More Past Due And Accruing | 1,925 | 5,902
Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 13,434,790 | 12,738,196
30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 83,468 | 35,773
60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 24,468 | 32,581
90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 48,448 | 47,809
Commercial and industrial loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 4,604,895 | 4,114,292
Loans > 90 Days or More Past Due And Accruing | 154 | 2,010
Commercial and industrial loans | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 4,591,709 | 4,096,605
Commercial and industrial loans | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,848 | 7,428
Commercial and industrial loans | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 5,488 | 473
Commercial and industrial loans | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 5,850 | 9,786
Agricultural land, production and other loans to farmers |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 275,817 | 256,312
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 | 275,364 | 256,148
Agricultural land, production and other loans to farmers | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 164
Agricultural land, production and other loans to farmers | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 217 | 0
Agricultural land, production and other loans to farmers | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 236 | 0
Construction |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 789,021 | 792,144
Loans > 90 Days or More Past Due And Accruing | 0 | 3,683
Construction | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 728,758 | 761,819
Construction | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 47,341 | 4,332
Construction | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 0 | 22,005
Construction | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 12,922 | 3,988
Commercial real estate, non-owner occupied |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 2,304,889 | 2,274,016
Loans > 90 Days or More Past Due And Accruing | 1,329 | 0
Commercial real estate, non-owner occupied | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 2,292,354 | 2,259,549
Commercial real estate, non-owner occupied | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 5,727 | 2,407
Commercial real estate, non-owner occupied | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 4,907 | 1,718
Commercial real estate, non-owner occupied | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,901 | 10,342
Commercial real estate, owner occupied |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,232,117 | 1,157,944
Loans > 90 Days or More Past Due And Accruing | 0 | 0
Commercial real estate, owner occupied | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,216,776 | 1,153,861
Commercial real estate, owner occupied | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 9,037 | 3,783
Commercial real estate, owner occupied | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 564 | 0
Commercial real estate, owner occupied | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 5,740 | 300
Residential |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 2,412,783 | 2,374,729
Loans > 90 Days or More Past Due And Accruing | 423 | 208
Residential | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 2,368,841 | 2,337,002
Residential | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 13,926 | 12,302
Residential | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 11,279 | 6,606
Residential | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 18,737 | 18,819
Home equity |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 687,021 | 659,811
Loans > 90 Days or More Past Due And Accruing | 19 | 0
Home equity | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 677,667 | 649,238
Home equity | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 4,662 | 4,431
Home equity | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,631 | 1,569
Home equity | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 3,061 | 4,573
Individuals' loans for household and other personal expenditures |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 138,703 | 166,028
Loans > 90 Days or More Past Due And Accruing | 0 | 1
Individuals' loans for household and other personal expenditures | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 137,393 | 164,891
Individuals' loans for household and other personal expenditures | 30-59 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 927 | 926
Individuals' loans for household and other personal expenditures | 60-89 Days Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 382 | 210
Individuals' loans for household and other personal expenditures | 90 Days or More Past Due |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1 | 1
Public finance and other commercial loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,145,928 | 1,059,083
Loans > 90 Days or More Past Due And Accruing | 0 | 0
Public finance and other commercial loans | Current |  |
Financing Receivable, Past Due [Line Items] |  |
Loans | 1,145,928 | 1,059,083
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 | $ 0

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