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Loans - Summary of Acquired non-credit impaired loans (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | --- | ---
Summary of Loans |  |  |
Total loans | $ 24,664,134 | $ 11,375,104 |
Commercial loans | Construction and land development |  |  |
Summary of Loans |  |  |
Total loans | 1,899,066 | 1,017,261 |
Commercial loans | Commercial non-owner occupied |  |  |
Summary of Loans |  |  |
Total loans | 5,931,323 | 2,323,967 |
Commercial loans | Commercial non-owner occupied real estate |  |  |
Summary of Loans |  |  |
Total loans | 4,842,092 | 2,158,701 |
Commercial loans | Commercial and industrial |  |  |
Summary of Loans |  |  |
Total loans | 5,047,147 | 1,386,327 |
Commercial loans | Other income producing property |  |  |
Summary of Loans |  |  |
Total loans | 587,448 | 346,554 |
Consumer | Consumer Owner Occupied Loans |  |  |
Summary of Loans |  |  |
Total loans | 4,108,042 | 2,706,960 |
Consumer | Home equity loans |  |  |
Summary of Loans |  |  |
Total loans | 1,336,689 | 758,020 |
Consumer | Consumer |  |  |
Summary of Loans |  |  |
Total loans | 894,334 | 663,422 |
Consumer | Other loans |  |  |
Summary of Loans |  |  |
Total loans | $ 17,993 | 13,892 |
Acquired non-credit impaired loans |  |  |
Summary of Loans |  |  |
Total loans |  | 1,760,427 | $ 2,594,826
Unamortized Discounts |  | 20,300 |
Acquired non-credit impaired loans | Construction and land development |  |  |
Summary of Loans |  |  |
Total loans |  | 33,569 | 165,070
Acquired non-credit impaired loans | Commercial non-owner occupied |  |  |
Summary of Loans |  |  |
Total loans |  | 447,441 | 679,253
Acquired non-credit impaired loans | Consumer Owner Occupied Loans |  |  |
Summary of Loans |  |  |
Total loans |  | 496,431 | 628,813
Acquired non-credit impaired loans | Home equity loans |  |  |
Summary of Loans |  |  |
Total loans |  | 188,732 | 242,425
Acquired non-credit impaired loans | Commercial owner occupied real estate loan |  |  |
Summary of Loans |  |  |
Total loans |  | 307,193 | 421,841
Acquired non-credit impaired loans | Commercial and industrial |  |  |
Summary of Loans |  |  |
Total loans |  | 101,880 | 212,537
Acquired non-credit impaired loans | Other income producing property |  |  |
Summary of Loans |  |  |
Total loans |  | 95,697 | 133,110
Acquired non-credit impaired loans | Consumer |  |  |
Summary of Loans |  |  |
Total loans |  | 89,484 | $ 111,777
Acquired non-credit impaired loans | Commercial loans |  |  |
Summary of Loans |  |  |
Total loans |  | 985,780 |
Acquired non-credit impaired loans | Commercial loans | Construction and land development |  |  |
Summary of Loans |  |  |
Total loans |  | 33,569 |
Acquired non-credit impaired loans | Commercial loans | Commercial non-owner occupied |  |  |
Summary of Loans |  |  |
Total loans |  | 447,441 |
Acquired non-credit impaired loans | Commercial loans | Commercial non-owner occupied real estate |  |  |
Summary of Loans |  |  |
Total loans |  | 481,010 |
Acquired non-credit impaired loans | Commercial loans | Commercial owner occupied real estate loan |  |  |
Summary of Loans |  |  |
Total loans |  | 307,193 |
Acquired non-credit impaired loans | Commercial loans | Commercial and industrial |  |  |
Summary of Loans |  |  |
Total loans |  | 101,880 |
Acquired non-credit impaired loans | Commercial loans | Other income producing property |  |  |
Summary of Loans |  |  |
Total loans |  | 95,697 |
Acquired non-credit impaired loans | Consumer |  |  |
Summary of Loans |  |  |
Total loans |  | 774,647 |
Acquired non-credit impaired loans | Consumer | Consumer Owner Occupied Loans |  |  |
Summary of Loans |  |  |
Total loans |  | 496,431 |
Acquired non-credit impaired loans | Consumer | Home equity loans |  |  |
Summary of Loans |  |  |
Total loans |  | 188,732 |
Acquired non-credit impaired loans | Consumer | Real estate |  |  |
Summary of Loans |  |  |
Total loans |  | 685,163 |
Acquired non-credit impaired loans | Consumer | Consumer |  |  |
Summary of Loans |  |  |
Total loans |  | $ 89,484 |

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