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Loans and Loans Held for Sale - Restructured Loans By Segment and Type of Concession (Details) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 USD ($) loan | Jun. 30, 2017 USD ($) loan | Jun. 30, 2018 USD ($) loan | Jun. 30, 2017 USD ($) loan
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan |  | 10 | 11 | 31 | 18 |
Pre-Modification Outstanding Recorded Investment | [1] | $ 4,937 | $ 2,670 | $ 11,814 | $ 3,112 |
Post-Modification Outstanding Recorded Investment | [1] | 5,155 | 2,665 | 11,685 | 3,103 |
Total Difference in Recorded Investment |  | $ 218 | $ (5) | $ (129) | $ (9) |
Principal deferral |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan |  | 3 | 2 | 3 | 2 |
Pre-Modification Outstanding Recorded Investment | [1] | $ 4,815 | $ 529 | $ 4,815 | $ 529 |
Post-Modification Outstanding Recorded Investment | [1] | 5,034 | 529 | 5,034 | 529 |
Total Difference in Recorded Investment |  | $ 219 | $ 0 | $ 219 | $ 0 |
Maturity date extension and interest rate reduction |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan |  | 2 | 2 | 2 | 3 |
Pre-Modification Outstanding Recorded Investment | [1] | $ 47 | $ 1,800 | $ 47 | $ 1,973 |
Post-Modification Outstanding Recorded Investment | [1] | 47 | 1,800 | 47 | 1,972 |
Total Difference in Recorded Investment |  | $ 0 | $ 0 | $ 0 | $ (1) |
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] |  |  | 5,229 | 0 |
Total Difference in Recorded Investment |  |  |  | $ (126) | $ 0 |
Chapter 7 bankruptcy |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan | [2] | 5 | 6 | 18 | 12 |
Pre-Modification Outstanding Recorded Investment | [1],[2] | $ 75 | $ 110 | $ 829 | $ 379 |
Post-Modification Outstanding Recorded Investment | [1],[2] | 74 | 105 | 793 | 371 |
Total Difference in Recorded Investment | [2] | $ (1) | $ (5) | $ (36) | $ (8) |
Maturity date extension |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan |  | 0 | 1 | 2 | 1 |
Pre-Modification Outstanding Recorded Investment | [1] | $ 0 | $ 231 | $ 768 | $ 231 |
Post-Modification Outstanding Recorded Investment | [1] | 0 | 231 | 582 | 231 |
Total Difference in Recorded Investment |  | $ 0 | $ 0 | $ (186) | $ 0 |
Commercial real estate |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan |  | 0 | 1 | 0 | 1 |
Pre-Modification Outstanding Recorded Investment | [1] | $ 0 | $ 100 | $ 0 | $ 100 |
Post-Modification Outstanding Recorded Investment | [1] | 0 | 100 | 0 | 100 |
Total Difference in Recorded Investment |  | $ 0 | $ 0 | $ 0 | $ 0 |
Commercial real estate | Principal deferral |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan |  | 0 | 1 | 0 | 1 |
Pre-Modification Outstanding Recorded Investment | [1] | $ 0 | $ 100 | $ 0 | $ 100 |
Post-Modification Outstanding Recorded Investment | [1] | 0 | 100 | 0 | 100 |
Total Difference in Recorded Investment |  | $ 0 | $ 0 | $ 0 | $ 0 |
Commercial and industrial |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan |  | 3 | 3 | 11 | 3 |
Pre-Modification Outstanding Recorded Investment | [1] | $ 4,815 | $ 2,229 | $ 10,938 | $ 2,229 |
Post-Modification Outstanding Recorded Investment | [1] | 5,034 | 2,229 | 10,845 | 2,229 |
Total Difference in Recorded Investment |  | $ 219 | $ 0 | $ (93) | $ 0 |
Commercial and industrial | Principal deferral |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan |  | 3 | 1 | 3 | 1 |
Pre-Modification Outstanding Recorded Investment | [1] | $ 4,815 | $ 429 | $ 4,815 | $ 429 |
Post-Modification Outstanding Recorded Investment | [1] | 5,034 | 429 | 5,034 | 429 |
Total Difference in Recorded Investment |  | $ 219 | $ 0 | $ 219 | $ 0 | [1]
Commercial and industrial | Maturity date extension and interest rate reduction |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan |  | 0 | 2 | 0 | 2 |
Pre-Modification Outstanding Recorded Investment | [1] | $ 0 | $ 1,800 | $ 0 | $ 1,800 |
Post-Modification Outstanding Recorded Investment | [1] | 0 | 1,800 | 0 | 1,800 |
Total Difference in Recorded Investment |  | $ 0 | $ 0 | $ 0 | $ 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] |  |  | 5,229 | 0 |
Total Difference in Recorded Investment |  |  |  | $ (126) | $ 0 | [1]
Commercial and industrial | Maturity date extension |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan |  |  |  | 2 | 0 |
Pre-Modification Outstanding Recorded Investment | [1] |  |  | $ 768 | $ 0 |
Post-Modification Outstanding Recorded Investment | [1] |  |  | 582 | 0 |
Total Difference in Recorded Investment |  |  |  | $ (186) | $ 0 |
Commercial construction |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan |  | 0 | 0 | 0 | 0 |
Pre-Modification Outstanding Recorded Investment | [1] | $ 0 | $ 0 | $ 0 | $ 0 |
Post-Modification Outstanding Recorded Investment | [1] | 0 | 0 | 0 | 0 |
Total Difference in Recorded Investment |  | $ 0 | $ 0 | $ 0 | $ 0 |
Residential mortgage |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan |  | 1 | 1 | 3 | 1 |
Pre-Modification Outstanding Recorded Investment | [1] | $ 41 | $ 33 | $ 199 | $ 33 |
Post-Modification Outstanding Recorded Investment | [1] | 41 | 33 | 196 | 33 |
Total Difference in Recorded Investment |  | $ 0 | $ 0 | $ (3) | $ 0 |
Residential mortgage | Chapter 7 bankruptcy |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan | [2] | 1 | 1 | 3 | 1 |
Pre-Modification Outstanding Recorded Investment | [1],[2] | $ 41 | $ 33 | $ 199 | $ 33 |
Post-Modification Outstanding Recorded Investment | [1],[2] | 41 | 33 | 196 | 33 |
Total Difference in Recorded Investment | [2] | $ 0 | $ 0 | $ (3) | $ 0 |
Home equity |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan |  | 4 | 4 | 13 | 11 |
Pre-Modification Outstanding Recorded Investment | [1] | $ 73 | $ 271 | $ 652 | $ 713 |
Post-Modification Outstanding Recorded Investment | [1] | 73 | 269 | 621 | 707 |
Total Difference in Recorded Investment |  | $ 0 | $ (2) | $ (31) | $ (6) |
Home equity | Maturity date extension and interest rate reduction |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan |  | 2 | 0 | 2 | 1 |
Pre-Modification Outstanding Recorded Investment | [1] | $ 47 | $ 0 | $ 47 | $ 173 |
Post-Modification Outstanding Recorded Investment | [1] | 47 | 0 | 47 | 172 |
Total Difference in Recorded Investment |  | $ 0 | $ 0 | $ 0 | $ (1) |
Home equity | Chapter 7 bankruptcy |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan | [2] | 2 | 3 | 11 | 9 |
Pre-Modification Outstanding Recorded Investment | [1],[2] | $ 26 | $ 40 | $ 605 | $ 309 |
Post-Modification Outstanding Recorded Investment | [1],[2] | 26 | 38 | 574 | 304 |
Total Difference in Recorded Investment | [2] | $ 0 | $ (2) | $ (31) | $ (5) |
Home equity | Maturity date extension |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan |  | 0 | 1 | 0 | 1 |
Pre-Modification Outstanding Recorded Investment | [1] | $ 0 | $ 231 | $ 0 | $ 231 |
Post-Modification Outstanding Recorded Investment | [1] | 0 | 231 | 0 | 231 |
Total Difference in Recorded Investment |  | $ 0 | $ 0 | $ 0 | $ 0 |
Installment and other consumer |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan |  | 2 | 2 | 4 | 2 |
Pre-Modification Outstanding Recorded Investment | [1] | $ 8 | $ 37 | $ 25 | $ 37 |
Post-Modification Outstanding Recorded Investment | [1] | 7 | 34 | 23 | 34 |
Total Difference in Recorded Investment |  | $ (1) | $ (3) | $ (2) | $ (3) |
Installment and other consumer | Chapter 7 bankruptcy |  |  |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |  |  |
Number of Loans | loan | [2] | 2 | 2 | 4 | 2 |
Pre-Modification Outstanding Recorded Investment | [1],[2] | $ 8 | $ 37 | $ 25 | $ 37 |
Post-Modification Outstanding Recorded Investment | [1],[2] | 7 | 34 | 23 | 34 |
Total Difference in Recorded Investment | [2] | $ (1) | $ (3) | $ (2) | $ (3) |
[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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