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Allowance for Loan Losses - Investment in Loans, Net of Unearned Income on Impairment Methodology (Details) - USD ($) $ in Thousands | Sep. 30, 2019 | Dec. 31, 2018
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Investment in loans, net of unearned income on impairment methodology |  |
Individually evaluated for impairment | $ 50,046 | $ 35,278
Collectively evaluated for impairment | 9,075,624 | 8,825,597
Loans, net of unearned income | 9,313,784 | 9,083,129
Purchased with deteriorated credit quality |  |
Investment in loans, net of unearned income on impairment methodology |  |
Purchased with deteriorated credit quality | 188,114 | 222,254
Commercial |  |
Investment in loans, net of unearned income on impairment methodology |  |
Individually evaluated for impairment | 8,124 | 2,445
Collectively evaluated for impairment | 1,289,326 | 1,264,324
Loans, net of unearned income | 1,328,560 | 1,295,912
Commercial | Purchased with deteriorated credit quality |  |
Investment in loans, net of unearned income on impairment methodology |  |
Purchased with deteriorated credit quality | 31,110 | 29,143
Real estate – construction |  |
Investment in loans, net of unearned income on impairment methodology |  |
Individually evaluated for impairment | 12,380 | 10,043
Collectively evaluated for impairment | 803,710 | 730,625
Loans, net of unearned income | 816,695 | 740,668
Real estate – construction | Purchased with deteriorated credit quality |  |
Investment in loans, net of unearned income on impairment methodology |  |
Purchased with deteriorated credit quality | 605 | 0
Real estate – 1-4 family mortgage |  |
Investment in loans, net of unearned income on impairment methodology |  |
Individually evaluated for impairment | 17,332 | 14,238
Collectively evaluated for impairment | 2,742,677 | 2,732,862
Loans, net of unearned income | 2,797,633 | 2,795,343
Real estate – 1-4 family mortgage | Purchased with deteriorated credit quality |  |
Investment in loans, net of unearned income on impairment methodology |  |
Purchased with deteriorated credit quality | 37,624 | 48,243
Real estate – commercial mortgage |  |
Investment in loans, net of unearned income on impairment methodology |  |
Individually evaluated for impairment | 11,755 | 8,059
Collectively evaluated for impairment | 3,894,838 | 3,903,012
Loans, net of unearned income | 4,022,375 | 4,051,509
Real estate – commercial mortgage | Purchased with deteriorated credit quality |  |
Investment in loans, net of unearned income on impairment methodology |  |
Purchased with deteriorated credit quality | 115,782 | 140,438
Installment and Other |  |
Investment in loans, net of unearned income on impairment methodology |  |
Individually evaluated for impairment | 455 | 493
Collectively evaluated for impairment | 345,073 | 194,774
Loans, net of unearned income | 348,521 | 199,697
Installment and Other | Purchased with deteriorated credit quality |  |
Investment in loans, net of unearned income on impairment methodology |  |
Purchased with deteriorated credit quality | $ 2,993 | $ 4,430

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- Definition Investment in loans, net of unearned income on impairment methodology. + References No definition available. + Details
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- Definition The balance of financing receivables that were collectively evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 + Details
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- Definition The balance of financing receivables that were individually evaluated for impairment. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 11B -Subparagraph (h) -URI http://asc.fasb.org/extlink&oid=118936363&loc=SL6953423-111524 + Details
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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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