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Non Purchased Loans - Summary of Non-Purchased Loans and Leases (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Dec. 31, 2019
--- | --- | ---
Loans, net of unearned income: |  |
Gross loans | $ 10,937,807 | $ 9,693,463
Unearned income | (4,160) | (3,825)
Loans, net of unearned income | 10,933,647 | 9,689,638
Commercial, financial, agricultural |  |
Loans, net of unearned income: |  |
Gross loans | 2,536,984 | 1,367,972
Loans, net of unearned income | 2,536,984 | 1,367,972
Lease financing |  |
Loans, net of unearned income: |  |
Gross loans | 80,022 | 85,700
Loans, net of unearned income | 75,862 |
Real estate - construction |  |
Loans, net of unearned income: |  |
Gross loans | 858,104 | 826,483
Loans, net of unearned income | 858,104 | 826,483
Real estate - construction | Residential |  |
Loans, net of unearned income: |  |
Gross loans | 246,673 | 289,050
Real estate - construction | Commercial |  |
Loans, net of unearned income: |  |
Gross loans | 611,431 | 537,433
Real estate – 1-4 family mortgage |  |
Loans, net of unearned income: |  |
Gross loans | 2,698,308 | 2,866,613
Loans, net of unearned income | 2,698,308 | 2,866,613
Real estate – 1-4 family mortgage | Primary |  |
Loans, net of unearned income: |  |
Gross loans | 1,750,951 | 1,781,948
Real estate – 1-4 family mortgage | Home Equity Loan |  |
Loans, net of unearned income: |  |
Gross loans | 513,160 | 573,540
Real estate – 1-4 family mortgage | Rental / Investment |  |
Loans, net of unearned income: |  |
Gross loans | 296,364 | 335,100
Real estate – 1-4 family mortgage | Land Development |  |
Loans, net of unearned income: |  |
Gross loans | 137,833 | 176,025
Real estate – commercial mortgage: |  |
Loans, net of unearned income: |  |
Gross loans | 4,554,852 | 4,244,265
Loans, net of unearned income | 4,554,852 | 4,244,265
Real estate – commercial mortgage: | Land Development |  |
Loans, net of unearned income: |  |
Gross loans | 149,579 | 156,089
Real estate – commercial mortgage: | Owner Occupied |  |
Loans, net of unearned income: |  |
Gross loans | 1,657,806 | 1,637,281
Real estate – commercial mortgage: | Non-owner Occupied |  |
Loans, net of unearned income: |  |
Gross loans | 2,747,467 | 2,450,895
Installment loans to individuals |  |
Loans, net of unearned income: |  |
Gross loans | 209,537 | 302,430
Loans, net of unearned income | 209,537 | 384,305
Non-Purchased |  |
Loans, net of unearned income: |  |
Gross loans | 9,423,700 | 7,591,799
Unearned income | (4,160) | (3,825)
Loans, net of unearned income | 9,419,540 | 7,587,974
Non-Purchased | Commercial, financial, agricultural |  |
Loans, net of unearned income: |  |
Gross loans | 2,360,471 | 1,052,353
Non-Purchased | Lease financing |  |
Loans, net of unearned income: |  |
Gross loans | 80,022 | 85,700
Non-Purchased | Real estate - construction |  |
Loans, net of unearned income: |  |
Gross loans | 827,152 | 774,901
Non-Purchased | Real estate - construction | Residential |  |
Loans, net of unearned income: |  |
Gross loans | 243,814 | 272,643
Non-Purchased | Real estate - construction | Commercial |  |
Loans, net of unearned income: |  |
Gross loans | 583,338 | 502,258
Non-Purchased | Real estate – 1-4 family mortgage |  |
Loans, net of unearned income: |  |
Gross loans | 2,356,564 | 2,350,126
Non-Purchased | Real estate – 1-4 family mortgage | Primary |  |
Loans, net of unearned income: |  |
Gross loans | 1,536,181 | 1,449,219
Non-Purchased | Real estate – 1-4 family mortgage | Home Equity Loan |  |
Loans, net of unearned income: |  |
Gross loans | 432,768 | 456,265
Non-Purchased | Real estate – 1-4 family mortgage | Rental / Investment |  |
Loans, net of unearned income: |  |
Gross loans | 264,436 | 291,931
Non-Purchased | Real estate – 1-4 family mortgage | Land Development |  |
Loans, net of unearned income: |  |
Gross loans | 123,179 | 152,711
Non-Purchased | Real estate – 1-4 family mortgage | Land Development |  |
Loans, net of unearned income: |  |
Gross loans | 123,179 |
Non-Purchased | Real estate – commercial mortgage: |  |
Loans, net of unearned income: |  |
Gross loans | 3,649,629 | 3,128,876
Non-Purchased | Real estate – commercial mortgage: | Owner Occupied |  |
Loans, net of unearned income: |  |
Gross loans | 1,334,765 | 1,209,204
Non-Purchased | Real estate – commercial mortgage: | Non-owner Occupied |  |
Loans, net of unearned income: |  |
Gross loans | 2,194,739 | 1,803,587
Non-Purchased | Real estate – commercial mortgage: | Land Development |  |
Loans, net of unearned income: |  |
Gross loans | 120,125 | 116,085
Non-Purchased | Installment loans to individuals |  |
Loans, net of unearned income: |  |
Gross loans | $ 149,862 | $ 199,843

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