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Loans - Summary of Performing and Non Performing Loans (Details) - USD ($) $ in Thousands | Sep. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Investment on loans by payment activity | $ 37,159 | $ 8,056
Non-Covered Loans |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans, before unearned loan fees | 9,126,796 | 7,241,074
Non-Covered Loans | Commercial - investor owned |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans, before unearned loan fees | 2,121,251 | 1,589,419
Non-Covered Loans | Commercial - investor owned | Pass (1-6) |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans, before unearned loan fees |  | 2,584
Non-Covered Loans | Commercial - investor owned | Watch (7) |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans, before unearned loan fees |  | 0
Non-Covered Loans | Commercial - investor owned | Classified (8 & 9) |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans, before unearned loan fees |  | 2,584
Non-Covered Loans | CRE - owner occupied |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans, before unearned loan fees | 2,058,460 | 1,498,408
Non-Covered Loans | CRE - owner occupied | Pass (1-6) |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans, before unearned loan fees |  | 24,727
Non-Covered Loans | CRE - owner occupied | Watch (7) |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans, before unearned loan fees |  | 0
Non-Covered Loans | CRE - owner occupied | Classified (8 & 9) |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans, before unearned loan fees |  | 24,727
Non-Covered Loans | Construction and land development |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans, before unearned loan fees | 747,759 | 546,686
Non-Covered Loans | Construction and land development | Pass (1-6) |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans, before unearned loan fees |  | 2,820
Non-Covered Loans | Construction and land development | Watch (7) |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans, before unearned loan fees |  | 0
Non-Covered Loans | Construction and land development | Classified (8 & 9) |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans, before unearned loan fees |  | 2,820
Performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Investment on loans by payment activity | 37,143 | 8,035
Non Performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Investment on loans by payment activity | 16 | 21
Commercial and industrial |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Investment on loans by payment activity | 6,400 | 2,502
Loans, before unearned loan fees | 3,372,771 | 3,086,494
Commercial and industrial | Pass (1-6) |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans, before unearned loan fees | 3,154,118 | 2,876,755
Commercial and industrial | Watch (7) |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans, before unearned loan fees | 172,118 | 157,556
Commercial and industrial | Classified (8 & 9) |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans, before unearned loan fees | 46,535 | 52,183
Commercial and industrial | Performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Investment on loans by payment activity | 6,395 | 2,502
Commercial and industrial | Non Performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Investment on loans by payment activity | 5 | 0
Residential Portfolio Segment |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Investment on loans by payment activity | 204 | 921
Loans, before unearned loan fees | 542,486 | 318,258
Residential Portfolio Segment | Pass (1-6) |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans, before unearned loan fees | 514,888 | 307,996
Residential Portfolio Segment | Watch (7) |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans, before unearned loan fees | 23,526 | 4,491
Residential Portfolio Segment | Classified (8 & 9) |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans, before unearned loan fees | 4,072 | 5,771
Residential Portfolio Segment | Performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Investment on loans by payment activity | 204 | 921
Residential Portfolio Segment | Non Performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Investment on loans by payment activity | 0 | 0
Other |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Investment on loans by payment activity | 424 | 4,633
Loans, before unearned loan fees | 266,828 | 177,614
Other | Pass (1-6) |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans, before unearned loan fees | 264,287 | 174,888
Other | Watch (7) |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans, before unearned loan fees | 2,495 | 2,647
Other | Classified (8 & 9) |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Loans, before unearned loan fees | 46 | 79
Other | Performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Investment on loans by payment activity | 413 | 4,612
Other | Non Performing |  |
Financing Receivable, Credit Quality Indicator [Line Items] |  |
Investment on loans by payment activity | $ 11 | $ 21

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