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Purchased Loans - Aging of Past Due and Nonaccrual Loans (Details) - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Past due and nonaccrual loans |  |
Loans, net of unearned income | $ 9,054,654 | $ 9,083,129
Commercial, financial, agricultural |  |
Past due and nonaccrual loans |  |
Loans, net of unearned income | 1,305,076 | 1,295,912
Real estate – construction |  |
Past due and nonaccrual loans |  |
Loans, net of unearned income | 781,531 | 740,668
Real estate – 1-4 family mortgage |  |
Past due and nonaccrual loans |  |
Loans, net of unearned income | 2,765,472 | 2,795,343
Real estate – commercial mortgage |  |
Past due and nonaccrual loans |  |
Loans, net of unearned income | 4,017,969 | 4,051,509
Installment loans to individuals |  |
Past due and nonaccrual loans |  |
Loans, net of unearned income | 184,606 | 199,697
Purchased loans |  |
Past due and nonaccrual loans |  |
Loans, net of unearned income | 2,350,366 | 2,693,417
Purchased loans | Accruing Loans |  |
Past due and nonaccrual loans |  |
Current Loans | 2,322,669 | 2,661,269
Loans, net of unearned income | 2,343,116 | 2,687,581
Purchased loans | Accruing Loans | 30-89 Days Past Due |  |
Past due and nonaccrual loans |  |
Loans past due | 12,760 | 19,080
Purchased loans | Accruing Loans | 90 Days or More Past Due |  |
Past due and nonaccrual loans |  |
Loans past due | 7,687 | 7,232
Purchased loans | Nonaccruing Loans |  |
Past due and nonaccrual loans |  |
Current Loans | 3,011 | 1,849
Loans, net of unearned income | 7,250 | 5,836
Purchased loans | Nonaccruing Loans | 30-89 Days Past Due |  |
Past due and nonaccrual loans |  |
Loans past due | 588 | 204
Purchased loans | Nonaccruing Loans | 90 Days or More Past Due |  |
Past due and nonaccrual loans |  |
Loans past due | 3,651 | 3,783
Purchased loans | Commercial, financial, agricultural |  |
Past due and nonaccrual loans |  |
Loans, net of unearned income | 374,478 | 420,263
Purchased loans | Commercial, financial, agricultural | Accruing Loans |  |
Past due and nonaccrual loans |  |
Current Loans | 368,967 | 417,786
Loans, net of unearned income | 373,518 | 419,694
Purchased loans | Commercial, financial, agricultural | Accruing Loans | 30-89 Days Past Due |  |
Past due and nonaccrual loans |  |
Loans past due | 3,755 | 1,811
Purchased loans | Commercial, financial, agricultural | Accruing Loans | 90 Days or More Past Due |  |
Past due and nonaccrual loans |  |
Loans past due | 796 | 97
Purchased loans | Commercial, financial, agricultural | Nonaccruing Loans |  |
Past due and nonaccrual loans |  |
Current Loans | 322 | 92
Loans, net of unearned income | 960 | 569
Purchased loans | Commercial, financial, agricultural | Nonaccruing Loans | 30-89 Days Past Due |  |
Past due and nonaccrual loans |  |
Loans past due | 0 | 0
Purchased loans | Commercial, financial, agricultural | Nonaccruing Loans | 90 Days or More Past Due |  |
Past due and nonaccrual loans |  |
Loans past due | 638 | 477
Purchased loans | Real estate – construction |  |
Past due and nonaccrual loans |  |
Loans, net of unearned income | 65,402 | 105,149
Purchased loans | Real estate – construction | Accruing Loans |  |
Past due and nonaccrual loans |  |
Current Loans | 65,295 | 103,846
Loans, net of unearned income | 65,402 | 105,149
Purchased loans | Real estate – construction | Accruing Loans | 30-89 Days Past Due |  |
Past due and nonaccrual loans |  |
Loans past due | 107 | 1,235
Purchased loans | Real estate – construction | Accruing Loans | 90 Days or More Past Due |  |
Past due and nonaccrual loans |  |
Loans past due | 0 | 68
Purchased loans | Real estate – construction | Nonaccruing Loans |  |
Past due and nonaccrual loans |  |
Current Loans | 0 | 0
Loans, net of unearned income | 0 | 0
Purchased loans | Real estate – construction | Nonaccruing Loans | 30-89 Days Past Due |  |
Past due and nonaccrual loans |  |
Loans past due | 0 | 0
Purchased loans | Real estate – construction | Nonaccruing Loans | 90 Days or More Past Due |  |
Past due and nonaccrual loans |  |
Loans past due | 0 | 0
Purchased loans | Real estate – 1-4 family mortgage |  |
Past due and nonaccrual loans |  |
Loans, net of unearned income | 604,855 | 707,453
Purchased loans | Real estate – 1-4 family mortgage | Accruing Loans |  |
Past due and nonaccrual loans |  |
Current Loans | 592,308 | 690,697
Loans, net of unearned income | 600,432 | 704,133
Purchased loans | Real estate – 1-4 family mortgage | Accruing Loans | 30-89 Days Past Due |  |
Past due and nonaccrual loans |  |
Loans past due | 5,080 | 8,981
Purchased loans | Real estate – 1-4 family mortgage | Accruing Loans | 90 Days or More Past Due |  |
Past due and nonaccrual loans |  |
Loans past due | 3,044 | 4,455
Purchased loans | Real estate – 1-4 family mortgage | Nonaccruing Loans |  |
Past due and nonaccrual loans |  |
Current Loans | 2,105 | 1,237
Loans, net of unearned income | 4,423 | 3,320
Purchased loans | Real estate – 1-4 family mortgage | Nonaccruing Loans | 30-89 Days Past Due |  |
Past due and nonaccrual loans |  |
Loans past due | 480 | 202
Purchased loans | Real estate – 1-4 family mortgage | Nonaccruing Loans | 90 Days or More Past Due |  |
Past due and nonaccrual loans |  |
Loans past due | 1,838 | 1,881
Purchased loans | Real estate – commercial mortgage |  |
Past due and nonaccrual loans |  |
Loans, net of unearned income | 1,276,567 | 1,423,144
Purchased loans | Real estate – commercial mortgage | Accruing Loans |  |
Past due and nonaccrual loans |  |
Current Loans | 1,267,915 | 1,413,346
Loans, net of unearned income | 1,275,066 | 1,421,467
Purchased loans | Real estate – commercial mortgage | Accruing Loans | 30-89 Days Past Due |  |
Past due and nonaccrual loans |  |
Loans past due | 3,404 | 5,711
Purchased loans | Real estate – commercial mortgage | Accruing Loans | 90 Days or More Past Due |  |
Past due and nonaccrual loans |  |
Loans past due | 3,747 | 2,410
Purchased loans | Real estate – commercial mortgage | Nonaccruing Loans |  |
Past due and nonaccrual loans |  |
Current Loans | 331 | 276
Loans, net of unearned income | 1,501 | 1,677
Purchased loans | Real estate – commercial mortgage | Nonaccruing Loans | 30-89 Days Past Due |  |
Past due and nonaccrual loans |  |
Loans past due | 108 | 0
Purchased loans | Real estate – commercial mortgage | Nonaccruing Loans | 90 Days or More Past Due |  |
Past due and nonaccrual loans |  |
Loans past due | 1,062 | 1,401
Purchased loans | Installment loans to individuals |  |
Past due and nonaccrual loans |  |
Loans, net of unearned income | 29,064 | 37,408
Purchased loans | Installment loans to individuals | Accruing Loans |  |
Past due and nonaccrual loans |  |
Current Loans | 28,184 | 35,594
Loans, net of unearned income | 28,698 | 37,138
Purchased loans | Installment loans to individuals | Accruing Loans | 30-89 Days Past Due |  |
Past due and nonaccrual loans |  |
Loans past due | 414 | 1,342
Purchased loans | Installment loans to individuals | Accruing Loans | 90 Days or More Past Due |  |
Past due and nonaccrual loans |  |
Loans past due | 100 | 202
Purchased loans | Installment loans to individuals | Nonaccruing Loans |  |
Past due and nonaccrual loans |  |
Current Loans | 253 | 244
Loans, net of unearned income | 366 | 270
Purchased loans | Installment loans to individuals | Nonaccruing Loans | 30-89 Days Past Due |  |
Past due and nonaccrual loans |  |
Loans past due | 0 | 2
Purchased loans | Installment loans to individuals | Nonaccruing Loans | 90 Days or More Past Due |  |
Past due and nonaccrual loans |  |
Loans past due | $ 113 | $ 24

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