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Loans and Leases - Commitments (Details) - USD ($) $ in Thousands | Jun. 30, 2019 | Dec. 31, 2018
--- | --- | ---
Loans and leases |  |
Loan and lease commitments | $ 5,791,088 | $ 5,549,591
Real estate |  |
Loans and leases |  |
Loan and lease commitments | 863,426 | 913,757
Commercial and Industrial |  |
Loans and leases |  |
Loan and lease commitments | 2,559,014 | 2,484,857
Commercial Real Estate | Real estate |  |
Loans and leases |  |
Loan and lease commitments | 134,523 | 114,186
Construction | Real estate |  |
Loans and leases |  |
Loan and lease commitments | 687,925 | 526,938
Residential mortgage | Real estate |  |
Loans and leases |  |
Loan and lease commitments | 329 | 121
Home Equity Line | Real estate |  |
Loans and leases |  |
Loan and lease commitments | 863,097 | 913,636
Consumer |  |
Loans and leases |  |
Loan and lease commitments | $ 1,546,200 | $ 1,509,853

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