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Loans and Allowance for Loan Losses - Troubled Debt Restructuring Modifications (Details) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2016 USD ($) contract | Sep. 30, 2015 USD ($) contract | Sep. 30, 2016 USD ($) loans contract | Sep. 30, 2015 USD ($) loans contract
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Contracts Modified | contract | 0 | 1 | 3 | 6
Pre-Modification Outstanding Recorded Investment | $ 0 | $ 700 | $ 1,917 | $ 1,704
Post-Modification Outstanding Recorded Investment | 0 | 700 | 2,048 | 1,803
Post-Modification Outstanding Recorded Investment at Period End | $ 0 | $ 700 | $ 2,030 | $ 1,680
Number of modified TDR loans that defaulted | loans |  |  | 0 | 0
Commercial loans | Commercial and industrial |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Contracts Modified | contract |  |  |  | 5
Pre-Modification Outstanding Recorded Investment |  |  |  | $ 1,482
Post-Modification Outstanding Recorded Investment |  |  |  | 1,582
Post-Modification Outstanding Recorded Investment at Period End |  |  |  | $ 1,463
Commercial real estate loans | Commercial real estate, investor |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Contracts Modified | contract |  |  | 2 | 1
Pre-Modification Outstanding Recorded Investment |  |  | $ 1,830 | $ 222
Post-Modification Outstanding Recorded Investment |  |  | 1,826 | 221
Post-Modification Outstanding Recorded Investment at Period End |  |  | $ 1,808 | $ 217
Residential loans | Home equity |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of Contracts Modified | contract |  |  | 1 |
Pre-Modification Outstanding Recorded Investment |  |  | $ 87 |
Post-Modification Outstanding Recorded Investment |  |  | 222 |
Post-Modification Outstanding Recorded Investment at Period End |  |  | $ 222 |

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- Definition Number of 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 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953676-111524 + Details
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- Definition Post-modification amount of investment in financing receivables modified by troubled debt restructurings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 310 -SubTopic 10 -Section 50 -Paragraph 33 -URI http://asc.fasb.org/extlink&oid=66008989&loc=SL6953676-111524 + Details
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