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Loans and Leases - Commitments (Details) - USD ($) $ in Thousands | Sep. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Loans and leases |  |
Loan and lease commitments | $ 5,814,078 | $ 5,549,591
Real estate |  |
Loans and leases |  |
Loan and lease commitments | 1,045,782 | 913,757
Commercial and Industrial |  |
Loans and leases |  |
Loan and lease commitments | 2,452,918 | 2,484,857
Commercial real estate | Real estate |  |
Loans and leases |  |
Loan and lease commitments | 126,033 | 114,186
Construction | Real estate |  |
Loans and leases |  |
Loan and lease commitments | 627,675 | 526,938
Residential mortgage | Real estate |  |
Loans and leases |  |
Loan and lease commitments | 327 | 121
Home equity line | Real estate |  |
Loans and leases |  |
Loan and lease commitments | 1,045,455 | 913,636
Consumer |  |
Loans and leases |  |
Loan and lease commitments | $ 1,561,670 | $ 1,509,853

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