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Loans - Summary of Portfolio Loans by Category (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, before unearned loan fees | $ 11,000,007 | $ 10,884,118
Noncovered Loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, before unearned loan fees | 11,002,393 | 10,888,345
Unearned loan fees, net | (2,386) | (4,227)
Loans and Lease Receivable, Including Unearned Loan Fees | 11,000,007 | 10,884,118
Noncovered Loans | Commercial and industrial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, before unearned loan fees | 4,622,028 | 4,674,056
Noncovered Loans | Commercial - investor owned |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, before unearned loan fees | 2,468,895 | 2,452,402
Noncovered Loans | Commercial - owner occupied |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, before unearned loan fees | 2,380,957 | 2,344,117
Noncovered Loans | Construction and land development |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, before unearned loan fees | 893,776 | 760,122
Noncovered Loans | Residential |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, before unearned loan fees | 351,588 | 371,995
Noncovered Loans | Total real estate loans |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, before unearned loan fees | 6,095,216 | 5,928,636
Noncovered Loans | Other |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Loans, before unearned loan fees | $ 285,149 | $ 285,653

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