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Loans and Loans Held for Sale - Composition of Loans (Details) - USD ($) $ in Thousands | Dec. 31, 2020 | Jan. 01, 2020 | Dec. 31, 2019
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Composition of Loans |  |  |
Portfolio loans, net of unearned income | $ 7,225,860 |  | $ 7,137,152
Loans held for sale | 18,528 |  | 5,256
Total Loans | 7,244,388 |  | 7,142,408
Interest receivable | 24,700 |  | 22,100
Commercial |  |  |
Composition of Loans |  |  |
Portfolio loans, net of unearned income | 5,977,643 |  | 5,756,971
Commercial | Commercial real estate |  |  |
Composition of Loans |  |  |
Portfolio loans, net of unearned income | 2,791,947 | $ 3,416,518 | 3,059,592
Commercial | Commercial and industrial |  |  |
Composition of Loans |  |  |
Portfolio loans, net of unearned income | 1,559,552 | 1,720,833 | 1,480,529
Commercial | Commercial construction |  |  |
Composition of Loans |  |  |
Portfolio loans, net of unearned income | 466,077 | 375,445 | 370,060
Commercial | Business banking |  |  |
Composition of Loans |  |  |
Portfolio loans, net of unearned income | 1,160,067 | 0 | 846,790
Consumer |  |  |
Composition of Loans |  |  |
Portfolio loans, net of unearned income | 1,248,217 |  | 1,380,181
Consumer | Commercial construction |  |  |
Composition of Loans |  |  |
Portfolio loans, net of unearned income |  |  | 8,390
Consumer | Consumer real estate |  |  |
Composition of Loans |  |  |
Portfolio loans, net of unearned income | 1,167,332 | 1,545,323 | 1,295,207
Consumer | Other consumer |  |  |
Composition of Loans |  |  |
Portfolio loans, net of unearned income | $ 80,885 | $ 79,033 | $ 84,974

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