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Loans and Allowance for Credit Losses Summary Of Gross Loans (Details) - USD ($) $ in Thousands | Mar. 31, 2019 | Dec. 31, 2018 | Mar. 31, 2018
--- | --- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans and leases, gross of unearned income | $ 16,289,939 | $ 16,192,439 |
Unearned income | (27,306) | (26,639) |
Loans and leases, net of unearned income | 16,262,633 | 16,165,800 | $ 15,696,284
Real-estate - commercial mortgage |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans and leases, gross of unearned income | 6,428,688 | 6,434,285 |
Loans and leases, net of unearned income | 6,428,688 | 6,434,285 | 6,332,508
Commercial - industrial, financial and agricultural |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans and leases, gross of unearned income | 4,429,538 | 4,404,548 |
Loans and leases, net of unearned income | 4,429,538 | 4,404,548 | 4,299,072
Real estate - residential mortgage |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans and leases, gross of unearned income | 2,313,908 | 2,251,044 |
Loans and leases, net of unearned income | 2,313,908 | 2,251,044 | 1,976,524
Real-estate - home equity |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans and leases, gross of unearned income | 1,413,500 | 1,452,137 |
Loans and leases, net of unearned income | 1,413,500 | 1,452,137 | 1,514,241
Real estate - construction |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans and leases, gross of unearned income | 953,087 | 916,599 |
Loans and leases, net of unearned income | 953,087 | 916,599 | 976,131
Consumer |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans and leases, gross of unearned income | 433,545 | 419,186 |
Loans and leases, net of unearned income | 433,545 | 419,186 | $ 326,766
Equipment lease financing and other |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans and leases, gross of unearned income | 315,934 | 311,866 |
Overdrafts |  |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |  |
Loans and leases, gross of unearned income | $ 1,739 | $ 2,774 |

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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=84173941&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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