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Loans - Summary of Recorded Investment in Portfolio Loans by Class and Category Based on Impairment Method (Details) $ in Thousands | 6 Months Ended |  |  |
--- | --- | --- | --- | ---
Jun. 30, 2020 USD ($) loan | Jun. 30, 2019 USD ($) loan | Mar. 31, 2020 USD ($) | Jan. 01, 2020 USD ($) | Dec. 31, 2019 USD ($)
Summary of Recorded Investment in Non-covered Loans by Portfolio Class and Category Based on Impairment Method [Line Items] |  |  |  |  |
Total |  |  |  | $ 43,288 |
Portfolio loans, net |  |  |  |  |
Summary of Recorded Investment in Non-covered Loans by Portfolio Class and Category Based on Impairment Method [Line Items] |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts | loan | 3 | 3 |  |  |
Financing Receivable, Troubled Debt Restructuring, Postmodification | $ 3,886 | $ 520 |  |  |
Financing Receivable, Troubled Debt Restructuring, Premodification | 3,886 | $ 520 |  |  |
Total | 110,270 |  | $ 92,187 | 69,995 | $ 43,288
Loans - Ending balance: |  |  |  |  |
Unamortized Loan Commitment and Origination Fees and Unamortized Discounts or Premiums | (24,441) |  |  |  | (2,616)
Total | $ 6,164,492 |  |  |  | 5,316,953
Portfolio loans, net | Commercial and industrial |  |  |  |  |
Summary of Recorded Investment in Non-covered Loans by Portfolio Class and Category Based on Impairment Method [Line Items] |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts | loan | 1 | 0 |  |  |
Financing Receivable, Troubled Debt Restructuring, Postmodification | $ 3,731 | $ 0 |  |  |
Financing Receivable, Troubled Debt Restructuring, Premodification | 3,731 | $ 0 |  |  |
Total | 50,139 |  | 45,981 | 33,949 | 27,455
Loans - Ending balance: |  |  |  |  |
Total | 3,165,611 |  |  |  | 2,361,157
Portfolio loans, net | CRE - investor owned |  |  |  |  |
Summary of Recorded Investment in Non-covered Loans by Portfolio Class and Category Based on Impairment Method [Line Items] |  |  |  |  |
Total | 25,019 |  | 19,892 | 16,656 | 5,935
Loans - Ending balance: |  |  |  |  |
Total | $ 1,309,895 |  |  |  | 1,299,884
Portfolio loans, net | CRE - owner occupied |  |  |  |  |
Summary of Recorded Investment in Non-covered Loans by Portfolio Class and Category Based on Impairment Method [Line Items] |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts | loan | 0 | 1 |  |  |
Financing Receivable, Troubled Debt Restructuring, Postmodification | $ 0 | $ 188 |  |  |
Financing Receivable, Troubled Debt Restructuring, Premodification | 0 | $ 188 |  |  |
Total | 11,088 |  | 9,477 | 7,414 | 4,873
Loans - Ending balance: |  |  |  |  |
Total | 738,549 |  |  |  | 697,437
Portfolio loans, net | Construction and land development |  |  |  |  |
Summary of Recorded Investment in Non-covered Loans by Portfolio Class and Category Based on Impairment Method [Line Items] |  |  |  |  |
Total | 15,962 |  | 9,895 | 7,577 | 2,611
Loans - Ending balance: |  |  |  |  |
Total | $ 481,221 |  |  |  | 457,273
Portfolio loans, net | Residential real estate |  |  |  |  |
Summary of Recorded Investment in Non-covered Loans by Portfolio Class and Category Based on Impairment Method [Line Items] |  |  |  |  |
Financing Receivable, Modifications, Number of Contracts | loan | 2 | 2 |  |  |
Financing Receivable, Troubled Debt Restructuring, Postmodification | $ 155 | $ 332 |  |  |
Financing Receivable, Troubled Debt Restructuring, Premodification | 155 | $ 332 |  |  |
Total | 6,333 |  | 5,395 | 3,349 | 1,280
Loans - Ending balance: |  |  |  |  |
Total | 326,992 |  |  |  | 366,261
Portfolio loans, net | Other |  |  |  |  |
Summary of Recorded Investment in Non-covered Loans by Portfolio Class and Category Based on Impairment Method [Line Items] |  |  |  |  |
Total | 1,729 |  | $ 1,547 | $ 1,050 | 1,134
Loans - Ending balance: |  |  |  |  |
Total | $ 142,224 |  |  |  | $ 134,941

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