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Loans - Summary of Aging of Recorded Investment in Past Due Portfolio Loans by Portfolio Class and Category (Details) - USD ($) $ in Thousands | Jun. 30, 2024 | Dec. 31, 2023
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Total | $ 11,000,007 | $ 10,884,118
Loans, including unearned loan fees | 10,860,543 | 10,749,347
Non-Covered Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 11,002,393 | 10,888,345
Loans, including unearned loan fees | 11,000,007 | 10,884,118
Unearned loan fees, net | (2,386) | (4,227)
Loans, before unearned loan fees, after allowance | 11,002,393 | 10,888,345
Non-Covered Loans | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 4,622,028 | 4,674,056
Loans, including unearned loan fees | 4,622,028 | 4,674,056
Non-Covered Loans | Commercial Real Estate Investor Owned Financing Receivable [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 2,468,895 | 2,452,402
Loans, including unearned loan fees | 2,468,895 | 2,452,402
Non-Covered Loans | Commercial - owner occupied |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 2,380,957 | 2,344,117
Loans, including unearned loan fees | 2,380,957 | 2,344,117
Non-Covered Loans | Construction and land development |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 893,776 | 760,122
Loans, including unearned loan fees | 893,776 | 760,122
Non-Covered Loans | Residential |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 351,588 | 371,995
Loans, including unearned loan fees | 351,588 | 371,995
Non-Covered Loans | Other |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 285,149 | 285,653
Loans, including unearned loan fees | 285,149 | 285,653
Total Past Due | Non-Covered Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, before unearned loan fees | 76,752 | 60,676
Total Past Due | Non-Covered Loans | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 18,430 | 12,482
Total Past Due | Non-Covered Loans | Commercial Real Estate Investor Owned Financing Receivable [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 17,700 | 20,300
Total Past Due | Non-Covered Loans | Commercial - owner occupied |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 34,729 | 22,551
Total Past Due | Non-Covered Loans | Construction and land development |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 5,398 | 2,678
Total Past Due | Non-Covered Loans | Residential |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 461 | 2,579
Total Past Due | Non-Covered Loans | Other |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 34 | 86
30-89 Days Past Due | Non-Covered Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, before unearned loan fees | 29,732 | 16,231
30-89 Days Past Due | Non-Covered Loans | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 9,192 | 3,445
30-89 Days Past Due | Non-Covered Loans | Commercial Real Estate Investor Owned Financing Receivable [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 245 | 1,905
30-89 Days Past Due | Non-Covered Loans | Commercial - owner occupied |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 17,058 | 8,409
30-89 Days Past Due | Non-Covered Loans | Construction and land development |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 2,750 | 770
30-89 Days Past Due | Non-Covered Loans | Residential |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 461 | 1,620
30-89 Days Past Due | Non-Covered Loans | Other |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 26 | 82
90 or More Days Past Due | Non-Covered Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, before unearned loan fees | 47,020 | 44,445
90 or More Days Past Due | Non-Covered Loans | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 9,238 | 9,037
90 or More Days Past Due | Non-Covered Loans | Commercial Real Estate Investor Owned Financing Receivable [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 17,455 | 18,395
90 or More Days Past Due | Non-Covered Loans | Commercial - owner occupied |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 17,671 | 14,142
90 or More Days Past Due | Non-Covered Loans | Construction and land development |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 2,648 | 1,908
90 or More Days Past Due | Non-Covered Loans | Residential |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 959
90 or More Days Past Due | Non-Covered Loans | Other |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 8 | 4
Current | Non-Covered Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, before unearned loan fees | 10,925,641 | 10,827,669
Current | Non-Covered Loans | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 4,603,598 | 4,661,574
Current | Non-Covered Loans | Commercial Real Estate Investor Owned Financing Receivable [Member] |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 2,451,195 | 2,432,102
Current | Non-Covered Loans | Commercial - owner occupied |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 2,346,228 | 2,321,566
Current | Non-Covered Loans | Construction and land development |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 888,378 | 757,444
Current | Non-Covered Loans | Residential |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 351,127 | 369,416
Current | Non-Covered Loans | Other |  |
Financing Receivable, Past Due [Line Items] |  |
Total | $ 285,115 | $ 285,567

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