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Loans and Credit Quality - Newly Restructured Loans (Details) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 USD ($) contract | Dec. 31, 2017 USD ($) contract
Financing Receivable, Modifications [Line Items] |  |
Pre-modification, number of contracts | contract | 7 | 3
Pre-modification, total modification | $ 4,625 | $ 12,953
Post-modification, number of contracts | contract | 7 | 3
Post-modification, total modification | $ 3,087 | $ 10,610
Commercial | Asset Quality Rating - Special Mention |  |
Financing Receivable, Modifications [Line Items] |  |
Pre-modification, number of contracts | contract |  | 1
Pre-modification, total modification |  | $ 2,078
Post-modification, number of contracts | contract |  | 1
Post-modification, total modification |  | $ 2,059
Commercial | Asset Quality Rating - Substandard |  |
Financing Receivable, Modifications [Line Items] |  |
Pre-modification, number of contracts | contract | 4 | 2
Pre-modification, total modification | $ 2,704 | $ 10,875
Post-modification, number of contracts | contract | 4 | 2
Post-modification, total modification | $ 1,166 | $ 8,551
Real estate term owner occupied | Asset Quality Rating - Substandard |  |
Financing Receivable, Modifications [Line Items] |  |
Pre-modification, number of contracts | contract | 3 |
Pre-modification, total modification | $ 1,921 |
Post-modification, number of contracts | contract | 3 |
Post-modification, total modification | $ 1,921 |
Rate Modification |  |
Financing Receivable, Modifications [Line Items] |  |
Pre-modification, total modification | 0 | 0
Post-modification, total modification | 0 | 0
Rate Modification | Commercial | Asset Quality Rating - Special Mention |  |
Financing Receivable, Modifications [Line Items] |  |
Pre-modification, total modification |  | 0
Post-modification, total modification |  | 0
Rate Modification | Commercial | Asset Quality Rating - Substandard |  |
Financing Receivable, Modifications [Line Items] |  |
Pre-modification, total modification | 0 | 0
Post-modification, total modification | 0 | 0
Rate Modification | Real estate term owner occupied | Asset Quality Rating - Substandard |  |
Financing Receivable, Modifications [Line Items] |  |
Pre-modification, total modification | 0 |
Post-modification, total modification | 0 |
Term Modification |  |
Financing Receivable, Modifications [Line Items] |  |
Pre-modification, total modification | 0 | 12,743
Post-modification, total modification | 0 | 10,408
Term Modification | Commercial | Asset Quality Rating - Special Mention |  |
Financing Receivable, Modifications [Line Items] |  |
Pre-modification, total modification |  | 2,078
Post-modification, total modification |  | 2,059
Term Modification | Commercial | Asset Quality Rating - Substandard |  |
Financing Receivable, Modifications [Line Items] |  |
Pre-modification, total modification | 0 | 10,665
Post-modification, total modification | 0 | 8,349
Term Modification | Real estate term owner occupied | Asset Quality Rating - Substandard |  |
Financing Receivable, Modifications [Line Items] |  |
Pre-modification, total modification | 0 |
Post-modification, total modification | 0 |
Payment Modification |  |
Financing Receivable, Modifications [Line Items] |  |
Pre-modification, total modification | 4,625 | 210
Post-modification, total modification | 3,087 | 202
Payment Modification | Commercial | Asset Quality Rating - Special Mention |  |
Financing Receivable, Modifications [Line Items] |  |
Pre-modification, total modification |  | 0
Post-modification, total modification |  | 0
Payment Modification | Commercial | Asset Quality Rating - Substandard |  |
Financing Receivable, Modifications [Line Items] |  |
Pre-modification, total modification | 2,704 | 210
Post-modification, total modification | 1,166 | 202
Payment Modification | Real estate term owner occupied | Asset Quality Rating - Substandard |  |
Financing Receivable, Modifications [Line Items] |  |
Pre-modification, total modification | 1,921 |
Post-modification, total modification | 1,921 |
Combination Modification |  |
Financing Receivable, Modifications [Line Items] |  |
Pre-modification, total modification | 0 | 0
Post-modification, total modification | 0 | 0
Combination Modification | Commercial | Asset Quality Rating - Special Mention |  |
Financing Receivable, Modifications [Line Items] |  |
Pre-modification, total modification |  | 0
Post-modification, total modification |  | 0
Combination Modification | Commercial | Asset Quality Rating - Substandard |  |
Financing Receivable, Modifications [Line Items] |  |
Pre-modification, total modification | 0 | 0
Post-modification, total modification | 0 | $ 0
Combination Modification | Real estate term owner occupied | Asset Quality Rating - Substandard |  |
Financing Receivable, Modifications [Line Items] |  |
Pre-modification, total modification | 0 |
Post-modification, total modification | $ 0 |

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