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Purchased Loans - Summary of Purchased Loans (Details) - USD ($) $ in Thousands | Mar. 31, 2021 | Dec. 31, 2020 | Mar. 31, 2020
--- | --- | --- | ---
Summary of loans |  |  |
Gross loans | $ 10,688,408 | $ 10,933,647 | $ 9,769,377
Commercial, financial, agricultural |  |  |
Summary of loans |  |  |
Gross loans | 2,249,287 |  | 1,424,576
Real estate – construction: |  |  |
Summary of loans |  |  |
Gross loans | 955,918 |  | 787,895
Real estate – 1-4 family mortgage |  |  |
Summary of loans |  |  |
Gross loans | 2,686,061 |  | 2,846,301
Real estate – commercial mortgage: |  |  |
Summary of loans |  |  |
Gross loans | 4,549,027 |  | 4,308,708
Installment loans to individuals |  |  |
Summary of loans |  |  |
Gross loans | 172,859 |  | $ 317,218
Purchased loans |  |  |
Summary of loans |  |  |
Gross loans | 1,395,906 | 1,514,107 |
Purchased loans | Commercial, financial, agricultural |  |  |
Summary of loans |  |  |
Gross loans | 143,843 | 176,513 |
Purchased loans | Real estate – construction: |  |  |
Summary of loans |  |  |
Gross loans | 22,332 | 30,952 |
Purchased loans | Real estate – construction: | Residential |  |  |
Summary of loans |  |  |
Gross loans | 2,561 | 2,859 |
Purchased loans | Real estate – construction: | Commercial |  |  |
Summary of loans |  |  |
Gross loans | 19,771 | 28,093 |
Purchased loans | Real estate – 1-4 family mortgage |  |  |
Summary of loans |  |  |
Gross loans | 305,141 | 341,744 |
Purchased loans | Real estate – 1-4 family mortgage | Primary |  |  |
Summary of loans |  |  |
Gross loans | 190,539 | 214,770 |
Purchased loans | Real estate – 1-4 family mortgage | Home equity |  |  |
Summary of loans |  |  |
Gross loans | 72,413 | 80,392 |
Purchased loans | Real estate – 1-4 family mortgage | Rental/investment |  |  |
Summary of loans |  |  |
Gross loans | 28,800 | 31,928 |
Purchased loans | Real estate – 1-4 family mortgage | Land development |  |  |
Summary of loans |  |  |
Gross loans | 13,389 | 14,654 |
Purchased loans | Real estate – commercial mortgage: |  |  |
Summary of loans |  |  |
Gross loans | 872,867 | 905,223 |
Purchased loans | Real estate – commercial mortgage: | Land development |  |  |
Summary of loans |  |  |
Gross loans | 25,588 | 29,454 |
Purchased loans | Real estate – commercial mortgage: | Owner-occupied |  |  |
Summary of loans |  |  |
Gross loans | 300,616 | 323,041 |
Purchased loans | Real estate – commercial mortgage: | Non-owner occupied |  |  |
Summary of loans |  |  |
Gross loans | 546,663 | 552,728 |
Purchased loans | Real estate – commercial mortgage: | Land development |  |  |
Summary of loans |  |  |
Gross loans | 25,588 | 29,454 |
Purchased loans | Installment loans to individuals |  |  |
Summary of loans |  |  |
Gross loans | $ 51,723 | $ 59,675 |

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