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Loans and Loans Held for Sale - Restructured Loans By Segment and Type of Concession (Details) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 USD ($) loan | Sep. 30, 2017 USD ($) loan | Sep. 30, 2018 USD ($) loan | Sep. 30, 2017 USD ($) loan
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan |  | 10 | 15 | 37 | 33 |
Pre-Modification Outstanding Recorded Investment | [1] | $ 649 | $ 1,094 | $ 12,438 | $ 4,204 |
Post-Modification Outstanding Recorded Investment | [1] | 633 | 1,471 | 11,699 | 4,522 |
Total Difference in Recorded Investment |  | $ (16) | $ 377 | $ (739) | $ 318 |
Maturity date extension |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan |  | 1 | 2 | 3 | 3 |
Pre-Modification Outstanding Recorded Investment | [1] | $ 256 | $ 674 | $ 1,024 | $ 905 |
Post-Modification Outstanding Recorded Investment | [1] | 250 | 1,216 | 907 | 1,447 |
Total Difference in Recorded Investment |  | $ (6) | $ 542 | $ (117) | $ 542 |
Principal deferral |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan |  |  |  | 3 | 2 |
Pre-Modification Outstanding Recorded Investment | [1] |  |  | $ 4,815 | $ 529 |
Post-Modification Outstanding Recorded Investment | [1] |  |  | 4,466 | 529 |
Total Difference in Recorded Investment |  |  |  | $ (349) | $ 0 |
Principal deferral and maturity date extension |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan |  |  |  | 6 | 0 |
Pre-Modification Outstanding Recorded Investment | [1] |  |  | $ 5,355 | $ 0 |
Post-Modification Outstanding Recorded Investment | [1] |  |  | 5,225 | 0 |
Total Difference in Recorded Investment |  |  |  | $ (130) | $ 0 |
Maturity date extension and interest rate reduction |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan |  |  |  | 2 | 3 |
Pre-Modification Outstanding Recorded Investment | [1] |  |  | $ 47 | $ 1,972 |
Post-Modification Outstanding Recorded Investment | [1] |  |  | 47 | 1,919 |
Total Difference in Recorded Investment |  |  |  | $ 0 | $ (53) |
Chapter 7 bankruptcy |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan | [2] | 9 | 13 | 23 | 25 |
Pre-Modification Outstanding Recorded Investment | [1],[2] | $ 393 | $ 420 | $ 1,197 | $ 798 |
Post-Modification Outstanding Recorded Investment | [1],[2] | 383 | 255 | 1,054 | 627 |
Total Difference in Recorded Investment | [2] | $ (10) | $ (165) | $ (143) | $ (171) |
Commercial real estate |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan |  | 1 | 1 | 1 | 2 |
Pre-Modification Outstanding Recorded Investment | [1] | $ 256 | $ 400 | $ 256 | $ 500 |
Post-Modification Outstanding Recorded Investment | [1] | 250 | 400 | 250 | 500 |
Total Difference in Recorded Investment |  | $ (6) | $ 0 | $ (6) | $ 0 |
Commercial real estate | Maturity date extension |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan |  | 1 | 1 | 1 | 1 |
Pre-Modification Outstanding Recorded Investment | [1] | $ 256 | $ 400 | $ 256 | $ 400 |
Post-Modification Outstanding Recorded Investment | [1] | 250 | 400 | 250 | 400 |
Total Difference in Recorded Investment |  | $ (6) | $ 0 | $ (6) | $ 0 |
Commercial real estate | Principal deferral |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan |  |  |  | 0 | 1 |
Pre-Modification Outstanding Recorded Investment | [1] |  |  | $ 0 | $ 100 |
Post-Modification Outstanding Recorded Investment | [1] |  |  | 0 | 100 |
Total Difference in Recorded Investment |  |  |  | $ 0 | $ 0 |
Commercial and industrial |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan |  | 0 | 1 | 11 | 4 |
Pre-Modification Outstanding Recorded Investment | [1] | $ 0 | $ 274 | $ 10,938 | $ 2,502 |
Post-Modification Outstanding Recorded Investment | [1] | 0 | 816 | 10,348 | 3,044 |
Total Difference in Recorded Investment |  | $ 0 | $ 542 | $ (590) | $ 542 |
Commercial and industrial | Maturity date extension |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan |  | 0 | 1 | 2 | 1 |
Pre-Modification Outstanding Recorded Investment | [1] | $ 0 | $ 274 | $ 768 | $ 274 |
Post-Modification Outstanding Recorded Investment | [1] | 0 | 816 | 657 | 816 |
Total Difference in Recorded Investment |  | $ 0 | $ 542 | $ (111) | $ 542 |
Commercial and industrial | Principal deferral |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan |  |  |  | 3 | 1 |
Pre-Modification Outstanding Recorded Investment | [1] |  |  | $ 4,815 | $ 429 |
Post-Modification Outstanding Recorded Investment | [1] |  |  | 4,466 | 429 |
Total Difference in Recorded Investment |  |  |  | $ (349) | $ 0 |
Commercial and industrial | Principal deferral and maturity date extension |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan |  |  |  | 6 | 0 |
Pre-Modification Outstanding Recorded Investment | [1] |  |  | $ 5,355 | $ 0 |
Post-Modification Outstanding Recorded Investment | [1] |  |  | 5,225 | 0 |
Total Difference in Recorded Investment |  |  |  | $ (130) | $ 0 |
Commercial and industrial | Maturity date extension and interest rate reduction |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan |  |  |  | 0 | 2 |
Pre-Modification Outstanding Recorded Investment |  |  |  | $ 0 | $ 1,799 | [1]
Post-Modification Outstanding Recorded Investment |  |  |  | 0 | 1,799 | [1]
Total Difference in Recorded Investment |  |  |  | $ 0 | $ 0 |
Residential mortgage |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan |  | 2 | 1 | 5 | 2 |
Pre-Modification Outstanding Recorded Investment | [1] | $ 188 | $ 148 | $ 387 | $ 181 |
Post-Modification Outstanding Recorded Investment | [1] | 186 | 0 | 380 | 32 |
Total Difference in Recorded Investment |  | $ (2) | $ (148) | $ (7) | $ (149) |
Residential mortgage | Chapter 7 bankruptcy |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan | [2] | 2 | 1 | 5 | 2 |
Pre-Modification Outstanding Recorded Investment | [1],[2] | $ 188 | $ 148 | $ 387 | $ 181 |
Post-Modification Outstanding Recorded Investment | [1],[2] | 186 | 0 | 380 | 32 |
Total Difference in Recorded Investment | [2] | $ (2) | $ (148) | $ (7) | $ (149) |
Home equity |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan |  | 6 | 4 | 19 | 15 |
Pre-Modification Outstanding Recorded Investment | [1] | $ 193 | $ 72 | $ 845 | $ 784 |
Post-Modification Outstanding Recorded Investment | [1] | 191 | 70 | 715 | 726 |
Total Difference in Recorded Investment |  | $ (2) | $ (2) | $ (130) | $ (58) |
Home equity | Maturity date extension |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan |  |  |  | 0 | 1 |
Pre-Modification Outstanding Recorded Investment | [1] |  |  | $ 0 | $ 231 |
Post-Modification Outstanding Recorded Investment | [1] |  |  | 0 | 231 |
Total Difference in Recorded Investment |  |  |  | $ 0 | $ 0 |
Home equity | Maturity date extension and interest rate reduction |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan |  |  |  | 2 | 1 |
Pre-Modification Outstanding Recorded Investment | [1] |  |  | $ 47 | $ 173 |
Post-Modification Outstanding Recorded Investment | [1] |  |  | 47 | 120 |
Total Difference in Recorded Investment |  |  |  | $ 0 | $ (53) |
Home equity | Chapter 7 bankruptcy |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan | [2] | 6 | 4 | 17 | 13 |
Pre-Modification Outstanding Recorded Investment | [1],[2] | $ 193 | $ 72 | $ 798 | $ 380 |
Post-Modification Outstanding Recorded Investment | [1],[2] | 191 | 70 | 668 | 375 |
Total Difference in Recorded Investment | [2] | $ (2) | $ (2) | $ (130) | $ (5) |
Installment and other consumer |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan |  | 1 | 8 | 1 | 10 |
Pre-Modification Outstanding Recorded Investment | [1] | $ 12 | $ 200 | $ 12 | $ 237 |
Post-Modification Outstanding Recorded Investment | [1] | 6 | 185 | 6 | 220 |
Total Difference in Recorded Investment |  | $ (6) | $ (15) | $ (6) | $ (17) |
Installment and other consumer | Chapter 7 bankruptcy |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan | [2] | 1 | 8 | 1 | 10 |
Pre-Modification Outstanding Recorded Investment | [1],[2] | $ 12 | $ 200 | $ 12 | $ 237 |
Post-Modification Outstanding Recorded Investment | [1],[2] | 6 | 185 | 6 | 220 |
Total Difference in Recorded Investment | [2] | $ (6) | $ (15) | $ (6) | $ (17) |
[1] | Excludes loans that were fully paid off or fully charged-off by period end. The pre-modification balance represents the balance outstanding prior to modification. The post-modification balance represents the outstanding balance at period end.
[2] | Chapter 7 bankruptcy loans where the debt has been legally discharged through the bankruptcy court and not reaffirmed.

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