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Purchased Loans - Loan Portfolio Not Subject to Risk Rating (Details) - USD ($) $ in Thousands | Sep. 30, 2019 | Dec. 31, 2018
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Loan portfolio not subject to risk rating |  |
Total | $ 9,313,784 | $ 9,083,129
Commercial, financial, agricultural |  |
Loan portfolio not subject to risk rating |  |
Total | 1,328,560 | 1,295,912
Real estate – construction |  |
Loan portfolio not subject to risk rating |  |
Total | 816,695 | 740,668
Real estate – 1-4 family mortgage |  |
Loan portfolio not subject to risk rating |  |
Total | 2,797,633 | 2,795,343
Real estate – commercial mortgage |  |
Loan portfolio not subject to risk rating |  |
Total | 4,022,375 | 4,051,509
Installment loans to individuals |  |
Loan portfolio not subject to risk rating |  |
Total | 348,521 | 199,697
Purchased loans |  |
Loan portfolio not subject to risk rating |  |
Total | 2,281,966 | 2,693,417
Purchased loans | Performing and Nonperforming |  |
Loan portfolio not subject to risk rating |  |
Total | 592,719 | 619,073
Purchased loans | Performing |  |
Loan portfolio not subject to risk rating |  |
Total | 588,458 | 614,814
Purchased loans | Non-Performing |  |
Loan portfolio not subject to risk rating |  |
Total | 4,261 | 4,259
Purchased loans | Commercial, financial, agricultural |  |
Loan portfolio not subject to risk rating |  |
Total | 339,693 | 420,263
Purchased loans | Commercial, financial, agricultural | Performing and Nonperforming |  |
Loan portfolio not subject to risk rating |  |
Total | 14,306 | 21,372
Purchased loans | Commercial, financial, agricultural | Performing |  |
Loan portfolio not subject to risk rating |  |
Total | 14,012 | 21,303
Purchased loans | Commercial, financial, agricultural | Non-Performing |  |
Loan portfolio not subject to risk rating |  |
Total | 294 | 69
Purchased loans | Real estate – construction |  |
Loan portfolio not subject to risk rating |  |
Total | 52,106 | 105,149
Purchased loans | Real estate – construction | Performing and Nonperforming |  |
Loan portfolio not subject to risk rating |  |
Total | 2,070 | 3,185
Purchased loans | Real estate – construction | Performing |  |
Loan portfolio not subject to risk rating |  |
Total | 2,070 | 3,185
Purchased loans | Real estate – construction | Non-Performing |  |
Loan portfolio not subject to risk rating |  |
Total | 0 | 0
Purchased loans | Real estate – 1-4 family mortgage |  |
Loan portfolio not subject to risk rating |  |
Total | 561,725 | 707,453
Purchased loans | Real estate – 1-4 family mortgage | Performing and Nonperforming |  |
Loan portfolio not subject to risk rating |  |
Total | 434,065 | 530,404
Purchased loans | Real estate – 1-4 family mortgage | Performing |  |
Loan portfolio not subject to risk rating |  |
Total | 430,549 | 526,699
Purchased loans | Real estate – 1-4 family mortgage | Non-Performing |  |
Loan portfolio not subject to risk rating |  |
Total | 3,516 | 3,705
Purchased loans | Real estate – commercial mortgage |  |
Loan portfolio not subject to risk rating |  |
Total | 1,212,905 | 1,423,144
Purchased loans | Real estate – commercial mortgage | Performing and Nonperforming |  |
Loan portfolio not subject to risk rating |  |
Total | 29,734 | 31,136
Purchased loans | Real estate – commercial mortgage | Performing |  |
Loan portfolio not subject to risk rating |  |
Total | 29,629 | 30,951
Purchased loans | Real estate – commercial mortgage | Non-Performing |  |
Loan portfolio not subject to risk rating |  |
Total | 105 | 185
Purchased loans | Installment loans to individuals |  |
Loan portfolio not subject to risk rating |  |
Total | 115,537 | 37,408
Purchased loans | Installment loans to individuals | Performing and Nonperforming |  |
Loan portfolio not subject to risk rating |  |
Total | 112,544 | 32,976
Purchased loans | Installment loans to individuals | Performing |  |
Loan portfolio not subject to risk rating |  |
Total | 112,198 | 32,676
Purchased loans | Installment loans to individuals | Non-Performing |  |
Loan portfolio not subject to risk rating |  |
Total | $ 346 | $ 300

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- Definition Amount before allowance and after deduction of deferred interest and fees, unamortized costs and premiums and discounts from face amounts, of loans and leases held in portfolio, including but not limited to, commercial and consumer loans. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=118952595&loc=d3e4428-111522 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=118936363&loc=d3e5074-111524 + Details
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