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Loans and Leases - Commitments (Details) - USD ($) $ in Thousands | Sep. 30, 2017 | Dec. 31, 2016
--- | --- | ---
Loans and leases |  |
Loan and lease commitments | $ 5,438,176 | $ 5,121,811
Real estate |  |
Loans and leases |  |
Loan and lease commitments | 1,537,681 | 1,476,518
Commercial and Industrial |  |
Loans and leases |  |
Loan and lease commitments | 2,406,088 | 2,185,810
Commercial Real Estate | Real estate |  |
Loans and leases |  |
Loan and lease commitments | 80,719 | 88,331
Construction | Real estate |  |
Loans and leases |  |
Loan and lease commitments | 470,247 | 434,406
Residential | Real estate |  |
Loans and leases |  |
Loan and lease commitments | 986,715 | 953,781
Consumer |  |
Loans and leases |  |
Loan and lease commitments | $ 1,494,407 | 1,459,467
Lease Financing |  |
Loans and leases |  |
Loan and lease commitments |  | $ 16

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