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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 | 6 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Jun. 30, 2017 | Jun. 30, 2017 | Dec. 31, 2016 | Jun. 30, 2016
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |  |  |  |
Securities available-for-sale |  | $ 3,949,592 | [1] | $ 3,949,592 | [1] | $ 3,943,499 | [2] |
Loans, net of unearned income |  | 19,989,319 | [3] | 19,989,319 | [3] | 19,589,520 | [3] | $ 18,589,337
Real estate acquired by foreclosure | [4] | 11,901 |  | 11,901 |  | 16,237 |  |
Residential Real Estate |  |  |  |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |  |  |  |
Real estate acquired by foreclosure |  | 6,600 |  | 6,600 |  | 8,100 |  |
Non Recurring |  |  |  |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |  |  |  |
Loans, net of unearned income | [5] | 29,260 |  | 29,260 |  | 31,070 |  |
Real estate acquired by foreclosure | [6] | 7,038 |  | 7,038 |  | 11,235 |  |
Other assets | [7] | 28,156 |  | 28,156 |  | 29,609 |  |
Non Recurring | First Mortgages |  |  |  |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |  |  |  |
Loans held-for-sale |  | 613 |  | 613 |  | 638 |  |
Level 3 | Residential Real Estate |  |  |  |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |  |  |  |
Loans held-for-sale |  | 21,200 |  | 21,200 |  | 22,562 |  |
Level 3 | Non Recurring |  |  |  |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |  |  |  |
Loans, net of unearned income | [5] |  |  |  |  | 31,070 |  |
Loans, net of unearned income |  | 29,260 | [5],[8] | 29,260 | [5],[8] | 31,070 | [9] |
Real estate acquired by foreclosure | [6] | 7,038 | [10] | 7,038 | [10] | 11,235 | [11] |
Other assets | [7] | 28,156 |  | 28,156 |  | 29,609 |  |
Level 3 | Non Recurring | First Mortgages |  |  |  |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |  |  |  |
Loans held-for-sale |  | 613 |  | 613 |  | 638 |  |
Level 3 | Derivatives, Other |  |  |  |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |  |  |  |
Other Liabilities, Fair Value Disclosure |  | 5,700 |  | 5,700 |  | 6,245 |  |
Loans Held For Sale - SBA | Level 3 |  |  |  |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |  |  |  |
Loans held-for-sale |  | 1,577 |  | 1,577 |  |  |  |
Other Assets | Level 3 | Non Recurring |  |  |  |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |  |  |  |
Other assets |  | 28,156 | [12] | $ 28,156 | [12] | $ 29,609 | [13] |
Discounted Cash Flow | Available-for-sale Securities | Level 3 |  |  |  |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |  |  |  |
Valuation Techniques |  |  |  | Discounted cash flow |  |  |  |
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 | Loans Held For Sale - SBA | Level 3 |  |  |  |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |  |  |  |
Valuation Techniques |  |  |  | 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 | 9% - 11% Values Utilized | Available-for-sale Securities | Level 3 |  |  |  |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |  |  |  |
Prepayment Speeds |  | 11.00% |  |  |  |  |  |
Maximum | Discounted Cash Flow | 15% - 19% Values Utilized | Available-for-sale Securities | Level 3 |  |  |  |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |  |  |  |
Fair Value Inputs, Bond Equivalent Yield |  | 19.00% |  |  |  |  |  |
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 | HELOC |  |  |  |  |  |  |  |
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 | HELOC |  |  |  |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |  |  |  |
Loss severity trends |  | 100.00% |  |  |  | 100.00% |  |
Maximum | Discounted Cash Flow | 8% - 12% Values Utilized | Loans Held For Sale - SBA | Level 3 |  |  |  |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |  |  |  |
Prepayment Speeds |  | 12.00% |  |  |  |  |  |
Maximum | Discounted Cash Flow | 9% - 10% Values Utilized | Loans Held For Sale - SBA | Level 3 |  |  |  |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |  |  |  |
Fair Value Inputs, Bond Equivalent Yield |  | 10.00% |  |  |  |  |  |
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 | 18 - 48 Months | Derivative Liabilities, Other | Level 3 | Derivatives, Other |  |  |  |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |  |  |  |
Time until resolution |  | 48 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 | 9% - 11% Values Utilized | Available-for-sale Securities | Level 3 |  |  |  |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |  |  |  |
Prepayment Speeds |  | 9.00% |  |  |  |  |  |
Minimum | Discounted Cash Flow | 15% - 19% Values Utilized | Available-for-sale Securities | Level 3 |  |  |  |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |  |  |  |
Fair Value Inputs, Bond Equivalent Yield |  | 15.00% |  |  |  |  |  |
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 | HELOC |  |  |  |  |  |  |  |
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 | HELOC |  |  |  |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |  |  |  |
Loss severity trends |  | 15.00% |  |  |  | 15.00% |  |
Minimum | Discounted Cash Flow | 8% - 12% Values Utilized | Loans Held For Sale - SBA | Level 3 |  |  |  |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |  |  |  |
Prepayment Speeds |  | 8.00% |  |  |  |  |  |
Minimum | Discounted Cash Flow | 9% - 10% Values Utilized | Loans Held For Sale - SBA | Level 3 |  |  |  |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |  |  |  |
Fair Value Inputs, Bond Equivalent Yield |  | 9.00% |  |  |  |  |  |
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 | 18 - 48 Months | Derivative Liabilities, Other | Level 3 | Derivatives, Other |  |  |  |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |  |  |  |
Time until resolution |  | 18 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% |  |
SBAs | Non Recurring |  |  |  |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |  |  |  |
Loans held-for-sale |  | $ 333,331 |  | $ 333,331 |  | $ 4,286 |  |
SBAs | Level 3 | Non Recurring |  |  |  |  |  |  |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |  |  |  |  |  |  |
Loans held-for-sale |  |  |  |  |  | $ 0 |  |
[1] | Includes $3.5 billion of securities pledged to secure public deposits, securities sold under agreements to repurchase, and for other purposes.
[2] | Includes $3.3 billion of securities pledged to secure public deposits, securities sold under agreements to repurchase, and for other purposes.
[3] | June 30, 2017 and December 31, 2016 include $28.8 million and $28.5 million, respectively, of held-to-maturity consumer mortgage loans secured by residential real estate properties in process of foreclosure.
[4] | June 30, 2017 and December 31, 2016 include $6.6 million and $8.1 million, respectively, of foreclosed residential real estate.
[5] | 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.
[6] | 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.
[7] | Represents tax credit investments accounted for under the equity method.
[8] | 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.
[9] | 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.
[10] | 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.
[11] | 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.
[12] | Represents tax credit investments accounted for under the equity method.
[13] | Represents tax credit investments accounted for under the equity method.

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- Definition Amount of investment in debt and equity securities categorized neither as held-to-maturity nor trading. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 25 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=65884222&loc=d3e22054-111558 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 50 -Paragraph 5 -Subparagraph (aa) -URI http://asc.fasb.org/extlink&oid=73527792&loc=d3e27232-111563 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 320 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=66010992&loc=d3e26610-111562 + Details
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