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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, 2023 | Dec. 31, 2022
--- | --- | ---
Financing Receivable, Past Due [Line Items] |  |
Total | $ 10,512,623 | $ 9,737,138
Loans, including unearned loan fees | 88,228 | 78,789
Non-Covered Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 10,518,809 | 9,744,427
Loans, including unearned loan fees | 10,512,623 | 9,737,138
Unearned loan fees, net | (6,186) | (7,289)
Loans, before unearned loan fees, after allowance | 10,518,809 | 9,744,427
Non-Covered Loans | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 4,360,862 | 3,859,964
Loans, including unearned loan fees | 4,360,862 | 3,859,964
Non-Covered Loans | CRE - investor owned |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 2,465,654 | 2,357,820
Loans, including unearned loan fees | 2,465,654 | 2,357,820
Non-Covered Loans | CRE - owner occupied |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 2,336,639 | 2,270,551
Loans, including unearned loan fees | 2,336,639 | 2,270,551
Non-Covered Loans | Construction and land development |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 671,573 | 611,565
Loans, including unearned loan fees | 671,573 | 611,565
Non-Covered Loans | Residential real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 368,867 | 395,537
Loans, including unearned loan fees | 368,867 | 395,537
Non-Covered Loans | Other |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 315,214 | 248,990
Loans, including unearned loan fees | 315,214 | 248,990
Total Past Due | Non-Covered Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, before unearned loan fees | 42,395 | 15,373
Total Past Due | Non-Covered Loans | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 15,859 | 2,928
Total Past Due | Non-Covered Loans | CRE - investor owned |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 1,711 | 1,135
Total Past Due | Non-Covered Loans | CRE - owner occupied |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 23,554 | 8,792
Total Past Due | Non-Covered Loans | Construction and land development |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 1,201
Total Past Due | Non-Covered Loans | Residential real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 1,230 | 1,227
Total Past Due | Non-Covered Loans | Other |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 41 | 90
30-89 Days Past Due | Non-Covered Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, before unearned loan fees | 32,160 | 10,437
30-89 Days Past Due | Non-Covered Loans | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 12,386 | 555
30-89 Days Past Due | Non-Covered Loans | CRE - investor owned |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 0
30-89 Days Past Due | Non-Covered Loans | CRE - owner occupied |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 19,476 | 8,628
30-89 Days Past Due | Non-Covered Loans | Construction and land development |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 9
30-89 Days Past Due | Non-Covered Loans | Residential real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 271 | 1,227
30-89 Days Past Due | Non-Covered Loans | Other |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 27 | 18
90 or More Days Past Due | Non-Covered Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, before unearned loan fees | 10,235 | 4,936
90 or More Days Past Due | Non-Covered Loans | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 3,473 | 2,373
90 or More Days Past Due | Non-Covered Loans | CRE - investor owned |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 1,711 | 1,135
90 or More Days Past Due | Non-Covered Loans | CRE - owner occupied |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 4,078 | 164
90 or More Days Past Due | Non-Covered Loans | Construction and land development |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 0 | 1,192
90 or More Days Past Due | Non-Covered Loans | Residential real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 959 | 0
90 or More Days Past Due | Non-Covered Loans | Other |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 14 | 72
Current | Non-Covered Loans |  |
Financing Receivable, Past Due [Line Items] |  |
Loans, before unearned loan fees | 10,476,414 | 9,729,054
Current | Non-Covered Loans | Commercial and industrial |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 4,345,003 | 3,857,036
Current | Non-Covered Loans | CRE - investor owned |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 2,463,943 | 2,356,685
Current | Non-Covered Loans | CRE - owner occupied |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 2,313,085 | 2,261,759
Current | Non-Covered Loans | Construction and land development |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 671,573 | 610,364
Current | Non-Covered Loans | Residential real estate |  |
Financing Receivable, Past Due [Line Items] |  |
Total | 367,637 | 394,310
Current | Non-Covered Loans | Other |  |
Financing Receivable, Past Due [Line Items] |  |
Total | $ 315,173 | $ 248,900

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