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Loans, Allowance for Loan Losses and Credit Quality (Weighted Average FICO Scores and the Weighted Average Combined LTV Ratio) (Details) - score | Sep. 30, 2016 | Dec. 31, 2015
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Residential Portfolio Segment [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Financing Receivable With Quality Of Loan Based On Weighted Average Fico Rating | 743 | 742
Financing Receivable With Credit Quality Of Loan Based Upon the Weighted Average Loan-To-Value Ratio | 62.70% | 61.40%
Consumer Home Equity [Member] |  |
Financing Receivable, Allowance for Credit Losses [Line Items] |  |
Financing Receivable With Quality Of Loan Based On Weighted Average Fico Rating | 767 | 765
Financing Receivable With Credit Quality Of Loan Based Upon the Weighted Average Loan-To-Value Ratio | 56.20% | 55.80%

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