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Loans and Credit Quality - Restructured Loans (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Mar. 31, 2018 | Dec. 31, 2017
Financing Receivable, Modifications [Line Items] |  |
New Troubled Debt Restructurings | $ 3,432 |
Existing Troubled Debt Restructurings | 22,096 |
Total | 25,528 | $ 23,800
Commercial | AQR Substandard |  |
Financing Receivable, Modifications [Line Items] |  |
New Troubled Debt Restructurings | 1,738 |
Real estate term owner occupied | AQR Substandard |  |
Financing Receivable, Modifications [Line Items] |  |
New Troubled Debt Restructurings | 1,694 |
Accrual Status |  |
Financing Receivable, Modifications [Line Items] |  |
New Troubled Debt Restructurings | 1,542 |
Existing Troubled Debt Restructurings | 7,620 |
Total | 9,162 |
Accrual Status | Commercial | AQR Substandard |  |
Financing Receivable, Modifications [Line Items] |  |
New Troubled Debt Restructurings | 1,179 |
Accrual Status | Real estate term owner occupied | AQR Substandard |  |
Financing Receivable, Modifications [Line Items] |  |
New Troubled Debt Restructurings | 363 |
Nonaccrual Status |  |
Financing Receivable, Modifications [Line Items] |  |
New Troubled Debt Restructurings | 1,890 |
Existing Troubled Debt Restructurings | 14,476 |
Total | 16,366 |
Nonaccrual Status | Commercial | AQR Substandard |  |
Financing Receivable, Modifications [Line Items] |  |
New Troubled Debt Restructurings | 559 |
Nonaccrual Status | Real estate term owner occupied | AQR Substandard |  |
Financing Receivable, Modifications [Line Items] |  |
New Troubled Debt Restructurings | $ 1,331 |

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- Definition The amount of the outstanding recorded investment related to financing receivables that have been modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 40 -Section 50 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=82895541&loc=d3e18845-111554 + Details
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