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Loans - Summary of loans (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
--- | --- | --- | ---
Summary of Loans |  |  |
Total loans - ASU 2016-13 | $ 24,664,134 |  |
Total loans | 24,664,134 | $ 11,375,104 |
Less allowance for credit losses | (457,309) | (56,927) |
Loans, net | 24,206,825 | 11,313,113 |
Deferred fees | 35,600 |  |
Accrued interest receivable (AIR) | 93,900 |  |
Acquired credit impaired loans |  |  |
Summary of Loans |  |  |
Total loans - ASU 2016-13 |  | 361,846 |
Total loans |  | 361,846 | $ 489,723
Less allowance for credit losses |  | (5,064) |
Loans, net |  | 356,782 |
Previous Accounting Guidance [Member] |  |  |
Summary of Loans |  |  |
Less allowance for credit losses |  | (61,991) |
Unamortized Discounts | 97,700 |  |
Construction and land development |  |  |
Summary of Loans |  |  |
Total loans - ASU 2016-13 | 1,899,066 |  |
Construction and land development | Acquired credit impaired loans |  |  |
Summary of Loans |  |  |
Total loans |  | 25,032 | 32,942
Commercial non-owner occupied |  |  |
Summary of Loans |  |  |
Total loans - ASU 2016-13 | 5,931,323 |  |
Consumer Owner Occupied Loans |  |  |
Summary of Loans |  |  |
Total loans - ASU 2016-13 | 4,108,042 |  |
Home equity loans |  |  |
Summary of Loans |  |  |
Total loans - ASU 2016-13 | 1,336,689 |  |
Commercial owner occupied real estate loan |  |  |
Summary of Loans |  |  |
Total loans - ASU 2016-13 | 4,842,092 |  |
Commercial and industrial |  |  |
Summary of Loans |  |  |
Total loans - ASU 2016-13 | 5,047,147 |  |
Commercial and industrial | Acquired credit impaired loans |  |  |
Summary of Loans |  |  |
Total loans |  | 7,029 | 10,043
Other income producing property |  |  |
Summary of Loans |  |  |
Total loans - ASU 2016-13 | 587,448 |  |
Consumer |  |  |
Summary of Loans |  |  |
Total loans - ASU 2016-13 | 894,334 |  |
Consumer | Acquired credit impaired loans |  |  |
Summary of Loans |  |  |
Total loans |  | 35,488 | 42,492
Other loans |  |  |
Summary of Loans |  |  |
Total loans - ASU 2016-13 | 17,993 |  |
Commercial loans |  |  |
Summary of Loans |  |  |
Total loans - ASU 2016-13 | 17,657,996 |  |
Commercial loans | Acquired credit impaired loans |  |  |
Summary of Loans |  |  |
Total loans - ASU 2016-13 |  | 7,029 |
Commercial loans | Construction and land development |  |  |
Summary of Loans |  |  |
Total loans - ASU 2016-13 | 1,238,265 |  |
Total loans | 1,899,066 | 1,017,261 |
Commercial loans | Construction and land development | Acquired credit impaired loans |  |  |
Summary of Loans |  |  |
Total loans - ASU 2016-13 |  | 25,032 |
Total loans |  | 25,032 |
Commercial loans | Commercial non-owner occupied |  |  |
Summary of Loans |  |  |
Total loans - ASU 2016-13 | 5,931,323 |  |
Total loans | 5,931,323 | 2,323,967 |
Commercial loans | Commercial non-owner occupied | Acquired credit impaired loans |  |  |
Summary of Loans |  |  |
Total loans - ASU 2016-13 |  | 130,938 |
Commercial loans | Commercial non-owner occupied real estate |  |  |
Summary of Loans |  |  |
Total loans | 4,842,092 | 2,158,701 |
Commercial loans | Consumer Owner Occupied Loans |  |  |
Summary of Loans |  |  |
Total loans - ASU 2016-13 | 35,137 |  |
Commercial loans | Real estate | Acquired credit impaired loans |  |  |
Summary of Loans |  |  |
Total loans |  | 130,938 | 196,764
Commercial loans | Commercial owner occupied real estate loan |  |  |
Summary of Loans |  |  |
Total loans - ASU 2016-13 | 4,842,092 |  |
Commercial loans | Commercial and industrial |  |  |
Summary of Loans |  |  |
Total loans - ASU 2016-13 | 5,047,147 |  |
Total loans | 5,047,147 | 1,386,327 |
Commercial loans | Commercial and industrial | Acquired credit impaired loans |  |  |
Summary of Loans |  |  |
Total loans |  | 7,029 |
Commercial loans | Other income producing property |  |  |
Summary of Loans |  |  |
Total loans - ASU 2016-13 | 546,039 |  |
Total loans | 587,448 | 346,554 |
Commercial loans | Other loans |  |  |
Summary of Loans |  |  |
Total loans - ASU 2016-13 | 17,993 |  |
Consumer |  |  |
Summary of Loans |  |  |
Total loans - ASU 2016-13 | 7,006,138 |  |
Consumer | Acquired credit impaired loans |  |  |
Summary of Loans |  |  |
Total loans - ASU 2016-13 |  | 35,488 |
Consumer | Construction and land development |  |  |
Summary of Loans |  |  |
Total loans - ASU 2016-13 | 660,801 |  |
Consumer | Consumer Owner Occupied Loans |  |  |
Summary of Loans |  |  |
Total loans - ASU 2016-13 | 4,072,905 |  |
Total loans | 4,108,042 | 2,706,960 |
Consumer | Home equity loans |  |  |
Summary of Loans |  |  |
Total loans - ASU 2016-13 | 1,336,689 |  |
Total loans | 1,336,689 | 758,020 |
Consumer | Real estate | Acquired credit impaired loans |  |  |
Summary of Loans |  |  |
Total loans |  | 163,359 | $ 207,482
Consumer | Commercial and industrial | Acquired credit impaired loans |  |  |
Summary of Loans |  |  |
Total loans |  | 7,029 |
Consumer | Other income producing property |  |  |
Summary of Loans |  |  |
Total loans - ASU 2016-13 | 41,409 |  |
Consumer | Consumer |  |  |
Summary of Loans |  |  |
Total loans - ASU 2016-13 | 894,334 |  |
Total loans | 894,334 | 663,422 |
Consumer | Consumer | Acquired credit impaired loans |  |  |
Summary of Loans |  |  |
Total loans |  | 35,488 |
Consumer | Other loans |  |  |
Summary of Loans |  |  |
Total loans | $ 17,993 | $ 13,892 |

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