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Loans - Summary of loans (Details) - USD ($) $ in Thousands | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020
--- | --- | --- | --- | ---
Summary of Loans |  |  |  |
Total loans | $ 32,388,489 | $ 30,177,862 |  |
Less allowance for credit losses | (456,573) | (356,444) | $ (301,807) | $ (457,309)
Loans, net | 31,931,916 | 29,821,418 |  |
Deferred costs | 68,000 | 49,700 |  |
Unamortized Discounts | 51,300 | 72,100 |  |
Accrued interest receivable (AIR) | $ 127,000 | $ 105,400 |  |
Financing Receivable, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration] | Other Assets. | Other Assets. |  |
Construction and land development |  |  |  |
Summary of Loans |  |  |  |
Total loans | $ 2,923,514 | $ 2,860,360 |  |
Commercial non-owner occupied |  |  |  |
Summary of Loans |  |  |  |
Total loans | 8,571,634 | 8,072,959 |  |
Consumer Owner Occupied Loans |  |  |  |
Summary of Loans |  |  |  |
Total loans | 6,595,005 | 5,162,042 |  |
Home equity loans |  |  |  |
Summary of Loans |  |  |  |
Total loans | 1,398,445 | 1,313,168 |  |
Commercial owner occupied real estate loan |  |  |  |
Summary of Loans |  |  |  |
Total loans | 5,497,671 | 5,460,193 |  |
Commercial and industrial |  |  |  |
Summary of Loans |  |  |  |
Total loans | 5,504,539 | 5,313,483 |  |
Other income producing property |  |  |  |
Summary of Loans |  |  |  |
Total loans | 656,334 | 696,242 |  |
Consumer loans |  |  |  |
Summary of Loans |  |  |  |
Total loans | 1,233,650 | 1,278,426 |  |
Other loans |  |  |  |
Summary of Loans |  |  |  |
Total loans | 7,697 | 20,989 |  |
Commercial loans |  |  |  |
Summary of Loans |  |  |  |
Total loans | 22,391,162 | 21,430,337 |  |
Commercial loans | Construction and land development |  |  |  |
Summary of Loans |  |  |  |
Total loans | 2,207,965 | 1,956,300 |  |
Commercial loans | Commercial non-owner occupied |  |  |  |
Summary of Loans |  |  |  |
Total loans | 8,571,634 | 8,072,959 |  |
Commercial loans | Commercial non-owner occupied real estate. |  |  |  |
Summary of Loans |  |  |  |
Total loans | 5,497,671 | 5,460,193 |  |
Commercial loans | Consumer Owner Occupied Loans |  |  |  |
Summary of Loans |  |  |  |
Total loans | 57,443 | 30,741 |  |
Commercial loans | Commercial owner occupied real estate loan |  |  |  |
Summary of Loans |  |  |  |
Total loans | 5,497,671 | 5,460,193 |  |
Commercial loans | Commercial and industrial |  |  |  |
Summary of Loans |  |  |  |
Total loans | 5,504,539 | 5,313,483 |  |
Commercial loans | Other income producing property |  |  |  |
Summary of Loans |  |  |  |
Total loans | 544,213 | 575,672 |  |
Commercial loans | Other loans |  |  |  |
Summary of Loans |  |  |  |
Total loans | 7,697 | 20,989 |  |
Consumer portfolio loans |  |  |  |
Summary of Loans |  |  |  |
Total loans | 9,997,327 | 8,747,525 |  |
Consumer portfolio loans | Construction and land development |  |  |  |
Summary of Loans |  |  |  |
Total loans | 715,549 | 904,060 |  |
Consumer portfolio loans | Consumer Owner Occupied Loans |  |  |  |
Summary of Loans |  |  |  |
Total loans | 6,537,562 | 5,131,301 |  |
Consumer portfolio loans | Home equity loans |  |  |  |
Summary of Loans |  |  |  |
Total loans | 1,398,445 | 1,313,168 |  |
Consumer portfolio loans | Other income producing property |  |  |  |
Summary of Loans |  |  |  |
Total loans | 112,121 | 120,570 |  |
Consumer portfolio loans | Consumer loans |  |  |  |
Summary of Loans |  |  |  |
Total loans | $ 1,233,650 | $ 1,278,426 |  |

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