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Loans - Nonaccrual Loans (Details) - USD ($) $ in Thousands | Sep. 30, 2018 | Dec. 31, 2017
--- | --- | ---
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans Receivable | $ 2,488,489 | $ 2,086,429
Commercial Portfolio Segment |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans Receivable | 1,826,635 | 1,528,407
Commercial Portfolio Segment | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans Receivable | 1,808,175 | 1,509,542
Commercial Portfolio Segment | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans Receivable | 9,032 | 14,961
Commercial Portfolio Segment | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans Receivable | 9,428 | 3,904
Commercial Portfolio Segment | Commercial and industrial |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans Receivable | 105,489 | 122,940
Commercial Portfolio Segment | Commercial and industrial | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans Receivable | 95,573 | 113,840
Commercial Portfolio Segment | Commercial and industrial | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans Receivable | 1,967 | 5,203
Commercial Portfolio Segment | Commercial and industrial | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans Receivable | 7,949 | 3,897
Commercial Portfolio Segment | Owner-occupied commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans Receivable | 93,568 | 75,768
Commercial Portfolio Segment | Owner-occupied commercial real estate | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans Receivable | 90,571 | 72,995
Commercial Portfolio Segment | Owner-occupied commercial real estate | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans Receivable | 1,518 | 2,766
Commercial Portfolio Segment | Owner-occupied commercial real estate | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans Receivable | 1,479 | 7
Commercial Portfolio Segment | Investor commercial real estate |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans Receivable | 5,595 | 7,273
Commercial Portfolio Segment | Investor commercial real estate | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans Receivable | 5,595 | 7,273
Commercial Portfolio Segment | Investor commercial real estate | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans Receivable | 0 | 0
Commercial Portfolio Segment | Investor commercial real estate | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans Receivable | 0 | 0
Commercial Portfolio Segment | Construction |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans Receivable | 38,228 | 49,213
Commercial Portfolio Segment | Construction | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans Receivable | 38,228 | 49,213
Commercial Portfolio Segment | Construction | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans Receivable | 0 | 0
Commercial Portfolio Segment | Construction | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans Receivable | 0 | 0
Commercial Portfolio Segment | Single tenant lease financing |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans Receivable | 883,372 | 803,299
Commercial Portfolio Segment | Single tenant lease financing | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans Receivable | 877,825 | 796,307
Commercial Portfolio Segment | Single tenant lease financing | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans Receivable | 5,547 | 6,992
Commercial Portfolio Segment | Single tenant lease financing | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans Receivable | 0 | 0
Commercial Portfolio Segment | Public finance |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans Receivable | 610,858 | 438,341
Commercial Portfolio Segment | Public finance | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans Receivable | 610,858 | 438,341
Commercial Portfolio Segment | Public finance | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans Receivable | 0 | 0
Commercial Portfolio Segment | Public finance | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans Receivable | 0 | 0
Commercial Portfolio Segment | Healthcare finance |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans Receivable | 89,525 | 31,573
Commercial Portfolio Segment | Healthcare finance | Pass |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans Receivable | 89,525 | 31,573
Commercial Portfolio Segment | Healthcare finance | Special Mention |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans Receivable | 0 | 0
Commercial Portfolio Segment | Healthcare finance | Substandard |  |
Accounts, Notes, Loans and Financing Receivable [Line Items] |  |
Total Loans Receivable | $ 0 | $ 0

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