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Loans - Summary of loans (Details) - USD ($) $ in Thousands | Mar. 31, 2023 | Dec. 31, 2022 | Mar. 31, 2022 | Dec. 31, 2021
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Summary of Loans |  |  |  |
Total loans | $ 30,696,142 | $ 30,177,862 |  |
Less allowance for credit losses | (370,645) | (356,444) | $ (300,396) | $ (301,807)
Loans, net | 30,325,497 | 29,821,418 |  |
Deferred costs | 55,300 | 49,700 |  |
Unamortized Discounts | 64,700 | 72,100 |  |
Interest Receivable | 109,400 | 105,400 |  |
Construction and land development |  |  |  |
Summary of Loans |  |  |  |
Total loans | 2,749,290 | 2,860,360 |  |
Commercial non-owner occupied |  |  |  |
Summary of Loans |  |  |  |
Total loans | 8,236,216 | 8,072,959 |  |
Consumer Owner Occupied Loans |  |  |  |
Summary of Loans |  |  |  |
Total loans | 5,528,546 | 5,162,042 |  |
Home equity loans |  |  |  |
Summary of Loans |  |  |  |
Total loans | 1,332,285 | 1,313,168 |  |
Commercial owner occupied real estate loan |  |  |  |
Summary of Loans |  |  |  |
Total loans | 5,522,514 | 5,460,193 |  |
Commercial and industrial |  |  |  |
Summary of Loans |  |  |  |
Total loans | 5,321,306 | 5,313,483 |  |
Other income producing property |  |  |  |
Summary of Loans |  |  |  |
Total loans | 721,291 | 696,242 |  |
Consumer loans |  |  |  |
Summary of Loans |  |  |  |
Total loans | 1,277,549 | 1,278,426 |  |
Other loans |  |  |  |
Summary of Loans |  |  |  |
Total loans | 7,145 | 20,989 |  |
Commercial loans |  |  |  |
Summary of Loans |  |  |  |
Total loans | 21,575,799 | 21,430,337 |  |
Commercial loans | Construction and land development |  |  |  |
Summary of Loans |  |  |  |
Total loans | 1,855,548 | 1,956,300 |  |
Commercial loans | Commercial non-owner occupied |  |  |  |
Summary of Loans |  |  |  |
Total loans | 8,236,216 | 8,072,959 |  |
Commercial loans | Commercial non-owner occupied real estate. |  |  |  |
Summary of Loans |  |  |  |
Total loans | 5,522,514 | 5,460,193 |  |
Commercial loans | Consumer Owner Occupied Loans |  |  |  |
Summary of Loans |  |  |  |
Total loans | 33,237 | 30,741 |  |
Commercial loans | Commercial owner occupied real estate loan |  |  |  |
Summary of Loans |  |  |  |
Total loans | 5,522,514 | 5,460,193 |  |
Commercial loans | Commercial and industrial |  |  |  |
Summary of Loans |  |  |  |
Total loans | 5,321,306 | 5,313,483 |  |
Commercial loans | Other income producing property |  |  |  |
Summary of Loans |  |  |  |
Total loans | 599,833 | 575,672 |  |
Commercial loans | Other loans |  |  |  |
Summary of Loans |  |  |  |
Total loans | 7,145 | 20,989 |  |
Consumer portfolio loans |  |  |  |
Summary of Loans |  |  |  |
Total loans | 9,120,343 | 8,747,525 |  |
Consumer portfolio loans | Construction and land development |  |  |  |
Summary of Loans |  |  |  |
Total loans | 893,742 | 904,060 |  |
Consumer portfolio loans | Consumer Owner Occupied Loans |  |  |  |
Summary of Loans |  |  |  |
Total loans | 5,495,309 | 5,131,301 |  |
Consumer portfolio loans | Home equity loans |  |  |  |
Summary of Loans |  |  |  |
Total loans | 1,332,285 | 1,313,168 |  |
Consumer portfolio loans | Other income producing property |  |  |  |
Summary of Loans |  |  |  |
Total loans | 121,458 | 120,570 |  |
Consumer portfolio loans | Consumer loans |  |  |  |
Summary of Loans |  |  |  |
Total loans | $ 1,277,549 | $ 1,278,426 |  |

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