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Fair Value Of Assets And Liabilities (Schedule Of Unobservable Inputs Utilized In Determining The Fair Value Of Level 3 Recurring And Non-Recurring Measurements) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2017 | Dec. 31, 2016
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Loans held-for-sale |  | $ 22,445 | $ 24,269
Other Liabilities, Fair Value Disclosure |  | 101,347 | 135,897
Real estate acquired by foreclosure | [1] | 15,144 | 16,237
Other assets |  | 132,229 | 155,479
Residential Real Estate |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Real estate acquired by foreclosure |  | 7,800 | 8,100
Non Recurring |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Real estate acquired by foreclosure | [2] | 10,259 | 11,235
Other assets | [3] | 28,667 | 29,609
Non Recurring | First Mortgages |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Loans held-for-sale |  | 606 | 638
Derivatives, Other |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Other Liabilities, Fair Value Disclosure |  | 5,996 | 6,252
Other assets |  |  | 42
Level 3 |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Loans held-for-sale |  | 21,221 | 21,924
Other Liabilities, Fair Value Disclosure |  | 5,950 | 6,245
Other assets |  | 0 | 985
Level 3 | Residential Real Estate |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Loans held-for-sale |  | 21,827 | 22,562
Level 3 | Non Recurring |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Loans, net of unearned income | [4] | 30,838 | 31,070
Real estate acquired by foreclosure | [2] | 10,259 | 11,235
Other assets | [3] | 28,667 | 29,609
Level 3 | Non Recurring | First Mortgages |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Loans held-for-sale |  | 606 | 638
Level 3 | Derivatives, Other |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Other Liabilities, Fair Value Disclosure |  | 5,950 | 6,245
Other assets |  |  | 0
Other Assets | Level 3 | Non Recurring |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Other assets | [3] | $ 28,667 | $ 29,609
Discounted Cash Flow | Loans Held-For-Sale | Level 3 | Residential Real Estate |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Valuation Techniques |  | Discounted cash flow | Discounted cash flow
Discounted Cash Flow | Derivative Liabilities, Other | Level 3 |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Valuation Techniques |  | Discounted cash flow | Discounted cash flow
Discounted Cash Flow | Other Assets | Level 3 |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Valuation Techniques |  | Discounted cash flow | Discounted cash flow
Appraisals From Comparable Properties | Loans, Net Of Unearned Income | Level 3 |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Valuation Techniques |  | Appraisals from comparable properties | Appraisals from comparable properties
Appraisals From Comparable Properties | Real Estate Acquired By Foreclosure | Level 3 |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Valuation Techniques |  | Appraisals from comparable properties | Appraisals from comparable properties
Appraisals From Comparable Properties | Other Assets | Level 3 |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Valuation Techniques |  | Appraisals from comparable properties | Appraisals from comparable properties
Other Collateral Valuations | Loans, Net Of Unearned Income | Level 3 |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Valuation Techniques |  | Other collateral valuations | Other collateral valuations
Maximum | Discounted Cash Flow | Derivative Liabilities, Other | Level 3 | Derivatives, Other |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Visa covered litigation resolution amount |  | $ 5,200,000 | $ 5,200,000
Maximum | Discounted Cash Flow | 2% - 12% Values Utilized | Loans Held-For-Sale | Level 3 | Residential Real Estate | First Mortgages |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Prepayment Speeds |  | 12.00% |
Maximum | Discounted Cash Flow | 2% - 13% Values Utilized | Loans Held-For-Sale | Level 3 | Residential Real Estate | First Mortgages |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Prepayment Speeds |  |  | 13.00%
Maximum | Discounted Cash Flow | 3% - 15% Values Utilized | Loans Held-For-Sale | Level 3 | Residential Real Estate | Home Equity |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Prepayment Speeds |  | 15.00% | 15.00%
Maximum | Discounted Cash Flow | 50% - 70% Values Utilized | Loans Held-For-Sale | Level 3 | Residential Real Estate |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Foreclosure losses |  | 70.00% | 70.00%
Maximum | Discounted Cash Flow | 5% - 50% Of UPB | Loans Held-For-Sale | Level 3 | Residential Real Estate | First Mortgages |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Loss severity trends |  | 50.00% | 50.00%
Maximum | Discounted Cash Flow | 15% - 100% Of UPB | Loans Held-For-Sale | Level 3 | Residential Real Estate | Home Equity |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Loss severity trends |  | 100.00% | 100.00%
Maximum | Discounted Cash Flow | 10% - 30% Values Utilized | Derivative Liabilities, Other | Level 3 | Derivatives, Other |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Probability of resolution scenarios |  | 30.00% | 30.00%
Maximum | Discounted Cash Flow | 21 - 51 Months | Derivative Liabilities, Other | Level 3 | Derivatives, Other |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Time until resolution |  | 51 months |
Maximum | Discounted Cash Flow | 24 - 54 Months | Derivative Liabilities, Other | Level 3 | Derivatives, Other |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Time until resolution |  |  | 54 months
Maximum | Discounted Cash Flow | 0% - 15% Adjustment to Yield | Other Assets | Level 3 |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Adjustments to current sales yields for specific properties |  | 15.00% | 15.00%
Maximum | Appraisals From Comparable Properties | 0% - 10% of Appraisal | Loans, Net Of Unearned Income | Level 3 |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Marketability adjustments for specific properties |  | 10.00% | 10.00%
Maximum | Appraisals From Comparable Properties | 0% - 10% of Appraisal | Real Estate Acquired By Foreclosure | Level 3 |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Adjustment for value changes since appraisal |  | 10.00% | 10.00%
Maximum | Appraisals From Comparable Properties | 0% - 25% Of Appraisal | Other Assets | Level 3 |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Marketability adjustments for specific properties |  | 25.00% | 25.00%
Maximum | Other Collateral Valuations | 20% - 50% Of Gross Value | Loans, Net Of Unearned Income | Level 3 |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Borrowing base certificates adjustment |  | 50.00% | 50.00%
Maximum | Other Collateral Valuations | 0% - 25% Of Reported Value | Loans, Net Of Unearned Income | Level 3 |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Financial statements/auction values adjustment |  | 25.00% | 25.00%
Minimum | Discounted Cash Flow | Derivative Liabilities, Other | Level 3 | Derivatives, Other |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Visa covered litigation resolution amount |  | $ 4,400,000 | $ 4,400,000
Minimum | Discounted Cash Flow | 2% - 12% Values Utilized | Loans Held-For-Sale | Level 3 | Residential Real Estate | First Mortgages |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Prepayment Speeds |  | 2.00% |
Minimum | Discounted Cash Flow | 2% - 13% Values Utilized | Loans Held-For-Sale | Level 3 | Residential Real Estate | First Mortgages |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Prepayment Speeds |  |  | 2.00%
Minimum | Discounted Cash Flow | 3% - 15% Values Utilized | Loans Held-For-Sale | Level 3 | Residential Real Estate | Home Equity |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Prepayment Speeds |  | 3.00% | 3.00%
Minimum | Discounted Cash Flow | 50% - 70% Values Utilized | Loans Held-For-Sale | Level 3 | Residential Real Estate |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Foreclosure losses |  | 50.00% | 50.00%
Minimum | Discounted Cash Flow | 5% - 50% Of UPB | Loans Held-For-Sale | Level 3 | Residential Real Estate | First Mortgages |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Loss severity trends |  | 5.00% | 5.00%
Minimum | Discounted Cash Flow | 15% - 100% Of UPB | Loans Held-For-Sale | Level 3 | Residential Real Estate | Home Equity |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Loss severity trends |  | 15.00% | 15.00%
Minimum | Discounted Cash Flow | 10% - 30% Values Utilized | Derivative Liabilities, Other | Level 3 | Derivatives, Other |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Probability of resolution scenarios |  | 10.00% | 10.00%
Minimum | Discounted Cash Flow | 21 - 51 Months | Derivative Liabilities, Other | Level 3 | Derivatives, Other |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Time until resolution |  | 21 months |
Minimum | Discounted Cash Flow | 24 - 54 Months | Derivative Liabilities, Other | Level 3 | Derivatives, Other |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Time until resolution |  |  | 24 months
Minimum | Discounted Cash Flow | 0% - 15% Adjustment to Yield | Other Assets | Level 3 |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Adjustments to current sales yields for specific properties |  | 0.00% | 0.00%
Minimum | Appraisals From Comparable Properties | 0% - 10% of Appraisal | Loans, Net Of Unearned Income | Level 3 |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Marketability adjustments for specific properties |  | 0.00% | 0.00%
Minimum | Appraisals From Comparable Properties | 0% - 10% of Appraisal | Real Estate Acquired By Foreclosure | Level 3 |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Adjustment for value changes since appraisal |  | 0.00% | 0.00%
Minimum | Appraisals From Comparable Properties | 0% - 25% Of Appraisal | Other Assets | Level 3 |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Marketability adjustments for specific properties |  | 0.00% | 0.00%
Minimum | Other Collateral Valuations | 20% - 50% Of Gross Value | Loans, Net Of Unearned Income | Level 3 |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Borrowing base certificates adjustment |  | 20.00% | 20.00%
Minimum | Other Collateral Valuations | 0% - 25% Of Reported Value | Loans, Net Of Unearned Income | Level 3 |  |  |
Fair Value Inputs Assets Quantitative Information [Line Items] |  |  |
Financial statements/auction values adjustment |  | 0.00% | 0.00%
[1] | March 31, 2017 and December 31, 2016 include $ 7.8 million and $8.1 million, respectively, of foreclosed residential real estate.
[2] | Represents the fair value of foreclosed properties that were measured subsequent to their initial classification as foreclosed assets. Balance excludes foreclosed real estate related to government insured mortgages.
[3] | Represents tax credit investments accounted for under the equity method .
[4] | Represents carrying value of loans for which adjustments are required to be based on the appraised value of the collateral less estimated costs to sell. Write-downs on these loans are recognized as part of provision for loan losses.

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