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Purchased Loans - Summary of Purchased Loans (Details) - USD ($) $ in Thousands | Sep. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Summary of loans |  |
Gross loans | $ 9,317,448 | $ 9,086,256
Unearned income | (3,664) | (3,127)
Loans, net of unearned income | 9,313,784 | 9,083,129
Purchased loans |  |
Summary of loans |  |
Gross loans | 2,281,966 | 2,693,417
Unearned income | 0 | 0
Loans, net of unearned income | 2,281,966 | 2,693,417
Commercial, financial, agricultural |  |
Summary of loans |  |
Gross loans | 1,328,560 | 1,295,912
Loans, net of unearned income | 1,328,560 | 1,295,912
Commercial, financial, agricultural | Purchased loans |  |
Summary of loans |  |
Gross loans | 339,693 | 420,263
Loans, net of unearned income | 339,693 | 420,263
Real estate – construction |  |
Summary of loans |  |
Gross loans | 816,695 | 740,668
Loans, net of unearned income | 816,695 | 740,668
Real estate – construction | Purchased loans |  |
Summary of loans |  |
Gross loans | 52,106 | 105,149
Loans, net of unearned income | 52,106 | 105,149
Real estate – 1-4 family mortgage |  |
Summary of loans |  |
Gross loans | 2,797,633 | 2,795,343
Loans, net of unearned income | 2,797,633 | 2,795,343
Real estate – 1-4 family mortgage | Purchased loans |  |
Summary of loans |  |
Gross loans | 561,725 | 707,453
Loans, net of unearned income | 561,725 | 707,453
Real estate – commercial mortgage |  |
Summary of loans |  |
Gross loans | 4,022,375 | 4,051,509
Loans, net of unearned income | 4,022,375 | 4,051,509
Real estate – commercial mortgage | Purchased loans |  |
Summary of loans |  |
Gross loans | 1,212,905 | 1,423,144
Loans, net of unearned income | 1,212,905 | 1,423,144
Installment loans to individuals |  |
Summary of loans |  |
Gross loans | 278,568 | 137,832
Loans, net of unearned income | 348,521 | 199,697
Installment loans to individuals | Purchased loans |  |
Summary of loans |  |
Gross loans | 115,537 | 37,408
Loans, net of unearned income | $ 115,537 | $ 37,408

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- Definition Amount of deferred interest and fee income, unamortized costs incurred to originate loans and leases, unamortized loan commitments and loan syndication fees, and premiums over or discounts from face amounts of acquired loans. Excludes amounts for 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 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 840 -SubTopic 30 -Section 50 -Paragraph 4 -Subparagraph (a)(4) -URI http://asc.fasb.org/extlink&oid=84165051&loc=d3e45377-112738 Reference 3: 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 Reference 4: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 20 -Section 50 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=84159169&loc=d3e10152-111534 + Details
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