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Loans and Loans Held for Sale - Composition of Loans (Details) - USD ($) $ in Thousands | Dec. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Composition of Loans |  |
Portfolio loans, net of unearned income | $ 5,761,449 | $ 5,611,419
Loans held for sale | 4,485 | 3,793
Total Loans | 5,765,934 | 5,615,212
Commercial real estate |  |
Composition of Loans |  |
Portfolio loans, net of unearned income | 2,685,994 | 2,498,476
Total Loans | 2,685,994 | 2,498,476
Commercial and industrial |  |
Composition of Loans |  |
Portfolio loans, net of unearned income | 1,433,266 | 1,401,035
Total Loans | 1,433,266 | 1,401,035
Commercial construction |  |
Composition of Loans |  |
Portfolio loans, net of unearned income | 384,334 | 455,884
Total Loans | 384,334 | 455,884
Residential mortgage |  |
Composition of Loans |  |
Total Loans | 698,774 | 701,982
Home equity |  |
Composition of Loans |  |
Total Loans | 487,326 | 482,284
Installment and other consumer |  |
Composition of Loans |  |
Total Loans | 67,204 | 65,852
Consumer construction |  |
Composition of Loans |  |
Total Loans | 4,551 | 5,906
Commercial |  |
Composition of Loans |  |
Portfolio loans, net of unearned income | 4,503,594 | 4,355,395
Commercial | Commercial real estate |  |
Composition of Loans |  |
Portfolio loans, net of unearned income | 2,685,994 | 2,498,476
Commercial | Commercial and industrial |  |
Composition of Loans |  |
Portfolio loans, net of unearned income | 1,433,266 | 1,401,035
Commercial | Commercial construction |  |
Composition of Loans |  |
Portfolio loans, net of unearned income | 384,334 | 455,884
Consumer |  |
Composition of Loans |  |
Portfolio loans, net of unearned income | 1,257,855 | 1,256,024
Consumer | Residential mortgage |  |
Composition of Loans |  |
Portfolio loans, net of unearned income | 698,774 | 701,982
Consumer | Home equity |  |
Composition of Loans |  |
Portfolio loans, net of unearned income | 487,326 | 482,284
Consumer | Installment and other consumer |  |
Composition of Loans |  |
Portfolio loans, net of unearned income | 67,204 | 65,852
Consumer | Consumer construction |  |
Composition of Loans |  |
Portfolio loans, net of unearned income | $ 4,551 | $ 5,906

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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://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522 Reference 2: http://www.xbrl.org/2003/role/presentationRef -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 + Details
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- Definition Amount, after allowance for bad debt, of loan receivables held-for-sale that are not part of a disposal group. Excludes loans and leases covered under loss sharing agreements and loans classified as debt securities. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=82891408&loc=d3e4428-111522 + Details
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- Definition Amount after allowance and 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. Includes loans held for sale. Excludes loans and leases covered under loss sharing agreements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03.7(a)) -URI http://asc.fasb.org/extlink&oid=6876686&loc=d3e534808-122878 + Details
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