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Loans and Loans Held for Sale - Restructured Loans for Periods Presented (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015
Financing Receivable, Modifications [Line Items] |  |
Restructured loans | $ 12,192 | $ 6,338
Performing TDRs |  |
Financing Receivable, Modifications [Line Items] |  |
Restructured loans | 13,423 | 23,955
Performing TDRs | Commercial Real Estate |  |
Financing Receivable, Modifications [Line Items] |  |
Restructured loans | 2,994 | 6,822
Performing TDRs | Commercial and Industrial |  |
Financing Receivable, Modifications [Line Items] |  |
Restructured loans | 1,387 | 6,321
Performing TDRs | Commercial Construction |  |
Financing Receivable, Modifications [Line Items] |  |
Restructured loans | 2,966 | 5,013
Performing TDRs | Residential Mortgage |  |
Financing Receivable, Modifications [Line Items] |  |
Restructured loans | 2,375 | 2,590
Performing TDRs | Home Equity |  |
Financing Receivable, Modifications [Line Items] |  |
Restructured loans | 3,683 | 3,184
Performing TDRs | Installment and Other Consumer |  |
Financing Receivable, Modifications [Line Items] |  |
Restructured loans | 18 | 25
Nonperforming TDRs |  |
Financing Receivable, Modifications [Line Items] |  |
Restructured loans | 11,598 | 7,659
Nonperforming TDRs | Commercial Real Estate |  |
Financing Receivable, Modifications [Line Items] |  |
Restructured loans | 646 | 3,548
Nonperforming TDRs | Commercial and Industrial |  |
Financing Receivable, Modifications [Line Items] |  |
Restructured loans | 4,493 | 1,570
Nonperforming TDRs | Commercial Construction |  |
Financing Receivable, Modifications [Line Items] |  |
Restructured loans | 430 | 1,265
Nonperforming TDRs | Residential Mortgage |  |
Financing Receivable, Modifications [Line Items] |  |
Restructured loans | 5,068 | 665
Nonperforming TDRs | Home Equity |  |
Financing Receivable, Modifications [Line Items] |  |
Restructured loans | 954 | 523
Nonperforming TDRs | Installment and Other Consumer |  |
Financing Receivable, Modifications [Line Items] |  |
Restructured loans | 7 | 88
Total TDRs |  |
Financing Receivable, Modifications [Line Items] |  |
Restructured loans | 25,021 | 31,614
Total TDRs | Commercial Real Estate |  |
Financing Receivable, Modifications [Line Items] |  |
Restructured loans | 3,640 | 10,370
Total TDRs | Commercial and Industrial |  |
Financing Receivable, Modifications [Line Items] |  |
Restructured loans | 5,880 | 7,891
Total TDRs | Commercial Construction |  |
Financing Receivable, Modifications [Line Items] |  |
Restructured loans | 3,396 | 6,278
Total TDRs | Residential Mortgage |  |
Financing Receivable, Modifications [Line Items] |  |
Restructured loans | 7,443 | 3,255
Total TDRs | Home Equity |  |
Financing Receivable, Modifications [Line Items] |  |
Restructured loans | 4,637 | 3,707
Total TDRs | Installment and Other Consumer |  |
Financing Receivable, Modifications [Line Items] |  |
Restructured loans | $ 25 | $ 113

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