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Allowance for Loan Losses and Credit Quality of Loans, Troubled Debt Restructurings (Details) $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2015 USD ($) Contract | Jun. 30, 2014 USD ($) Contract | Jun. 30, 2015 USD ($) Contract | Jun. 30, 2014 USD ($) Contract
Financing Receivable, Modifications [Line Items] |  |  |  |
Period of sustained repayment performance for nonperforming TDRs to be returned to performing status |  |  | 6 months |
Number of contracts | Contract | 20 | 28 | 48 | 63
Pre-modification outstanding recorded investment | $ 2,796 | $ 2,787 | $ 4,645 | $ 5,559
Post-modification outstanding recorded investment | $ 3,239 | $ 2,787 | $ 5,099 | $ 5,529
Number of TDR loans with subsequent default | Contract | 0 | 3 | 4 | 8
Outstanding recorded investment on TDR loans with subsequent default | $ 0 | $ 343 | $ 233 | $ 605
Commercial Loans [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of contracts | Contract | 2 | 2 | 2 | 2
Pre-modification outstanding recorded investment | $ 1,355 | $ 570 | $ 1,355 | $ 570
Post-modification outstanding recorded investment | $ 1,341 | $ 570 | $ 1,341 | $ 570
Commercial [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of contracts | Contract | 1 |  | 1 |
Pre-modification outstanding recorded investment | $ 1,165 |  | $ 1,165 |
Post-modification outstanding recorded investment | $ 1,165 |  | $ 1,165 |
Small Business [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of contracts | Contract | 1 | 2 | 1 | 2
Pre-modification outstanding recorded investment | $ 190 | $ 570 | $ 190 | $ 570
Post-modification outstanding recorded investment | $ 176 | $ 570 | $ 176 | $ 570
Consumer Loans [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of contracts | Contract | 12 | 23 | 31 | 45
Pre-modification outstanding recorded investment | $ 1,071 | $ 1,785 | $ 2,218 | $ 3,148
Post-modification outstanding recorded investment | $ 1,128 | $ 1,785 | $ 2,236 | $ 3,118
Number of TDR loans with subsequent default | Contract | 0 | 3 | 4 | 7
Outstanding recorded investment on TDR loans with subsequent default | $ 0 | $ 343 | $ 233 | $ 535
Indirect [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of contracts | Contract |  | 2 |  | 2
Pre-modification outstanding recorded investment |  | $ 69 |  | $ 69
Post-modification outstanding recorded investment |  | $ 69 |  | $ 39
Home Equity [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of contracts | Contract | 12 | 6 | 27 | 8
Pre-modification outstanding recorded investment | $ 1,071 | $ 503 | $ 2,112 | $ 561
Post-modification outstanding recorded investment | $ 1,128 | $ 503 | $ 2,132 | $ 561
Number of TDR loans with subsequent default | Contract | 0 | 2 | 4 | 2
Outstanding recorded investment on TDR loans with subsequent default | $ 0 | $ 300 | $ 233 | $ 300
Direct [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of contracts | Contract |  | 15 | 4 | 35
Pre-modification outstanding recorded investment |  | $ 1,213 | $ 106 | $ 2,518
Post-modification outstanding recorded investment |  | $ 1,213 | $ 104 | $ 2,518
Number of TDR loans with subsequent default | Contract | 0 | 1 | 0 | 5
Outstanding recorded investment on TDR loans with subsequent default | $ 0 | $ 43 | $ 0 | $ 235
Residential Real Estate Mortgages [Member] |  |  |  |
Financing Receivable, Modifications [Line Items] |  |  |  |
Number of contracts | Contract | 6 | 3 | 15 | 16
Pre-modification outstanding recorded investment | $ 370 | $ 432 | $ 1,072 | $ 1,841
Post-modification outstanding recorded investment | $ 770 | $ 432 | $ 1,522 | $ 1,841
Number of TDR loans with subsequent default | Contract |  |  | 0 | 1
Outstanding recorded investment on TDR loans with subsequent default |  |  | $ 0 | $ 70

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