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Loans - Schedule of Non-Purchased Loans and Leases (Details) - USD ($) $ in Thousands | Sep. 30, 2025 | Dec. 31, 2024
--- | --- | ---
Summary of loans |  |
Gross loans | $ 19,030,306 | $ 12,889,500
Unearned income | (4,785) | (4,480)
Loans, net of unearned income | 19,025,521 | 12,885,020
Commercial, financial, agricultural |  |
Summary of loans |  |
Gross loans | 2,760,490 | 1,885,817
Lease financing |  |
Summary of loans |  |
Gross loans | 78,964 | 95,071
Real estate – construction: |  |
Summary of loans |  |
Gross loans | 1,527,490 | 1,093,653
Real estate – construction: | Residential |  |
Summary of loans |  |
Gross loans | 404,651 | 256,655
Real estate – construction: | Commercial |  |
Summary of loans |  |
Gross loans | 1,122,839 | 836,998
Real estate – 1-4 family mortgage: |  |
Summary of loans |  |
Gross loans | 4,882,612 | 3,488,877
Real estate – 1-4 family mortgage: | Primary |  |
Summary of loans |  |
Gross loans | 3,061,356 | 2,428,076
Real estate – 1-4 family mortgage: | Home equity |  |
Summary of loans |  |
Gross loans | 739,786 | 544,158
Real estate – 1-4 family mortgage: | Rental/investment |  |
Summary of loans |  |
Gross loans | 841,515 | 402,938
Real estate – 1-4 family mortgage: | Land development |  |
Summary of loans |  |
Gross loans | 239,955 | 113,705
Real estate – 1-4 family mortgage: | Land development |  |
Summary of loans |  |
Gross loans | 239,955 | 113,705
Real estate – commercial mortgage: |  |
Summary of loans |  |
Gross loans | 9,665,075 | 6,236,068
Real estate – commercial mortgage: | Owner-occupied |  |
Summary of loans |  |
Gross loans | 3,321,186 | 1,894,679
Real estate – commercial mortgage: | Non-owner occupied |  |
Summary of loans |  |
Gross loans | 6,120,677 | 4,226,937
Real estate – commercial mortgage: | Land development |  |
Summary of loans |  |
Gross loans | 223,212 | 114,452
Installment loans to individuals |  |
Summary of loans |  |
Gross loans | $ 115,675 | $ 90,014

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