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Fair Value of Assets & Liabilities (Summary Of Changes In Level 3 Assets And Liabilities Measured At Fair Value) (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Fair Value, Net Derivative Asset (Liability) Measured on Recurring Basis, Unobservable Input Reconciliation [Roll Forward] |  |  |
Beginning balance, net derivative | $ (6,245) | $ (4,810) | $ (5,240)
Total net gains/(losses) included in: Net Income, net derivatives | (596) | (2,634) | (775)
Purchases, net derivatives | 0 | 0 | 0
Sales, net derivatives | 0 | 0 | 0
Settlements, net derivatives | 1,196 | 1,199 | 1,205
Net transfers in/(out) level 3, net derivatives | 0 | 0 | 0
Ending balance, net derivative | (5,645) | (6,245) | (4,810)
Net unrealized gains/(losses) included in net income | (596) | (2,634) | (775)
Trading securities |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |
Beginning balance, assets | 2,573 | 4,377 | 5,642
Total net gains/(losses) included in : Net income, assets | 448 | 604 | 369
Purchases, assets | 0 | 0 | 0
Sales, assets | (5) | 0 | 0
Settlements, assets | (865) | (2,408) | (1,634)
Net transfers into/(out of) Level 3, assets | 0 | 0 | 0
Ending balance, assets | 2,151 | 2,573 | 4,377
Net unrealized gains/(losses) included in net income | 303 | 159 | 369
SBA - Interest Only Strips |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |
Beginning balance, assets | 0 |  |
Total net gains/(losses) included in : Net income, assets | 1,021 |  |
Purchases, assets | 1,413 |  |
Sales, assets | (11,431) |  |
Settlements, assets | 0 |  |
Net transfers into/(out of) Level 3, assets | 10,267 |  |
Ending balance, assets | 1,270 | 0 |
Net unrealized gains/(losses) included in net income | (171) |  |
Loans Held For Sale |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |
Beginning balance, assets | 21,924 | 27,418 | 27,910
Total net gains/(losses) included in : Net income, assets | 1,547 | 3,380 | 2,765
Purchases, assets | 168 | 706 | 3,116
Sales, assets | 0 | 0 | 0
Settlements, assets | (4,346) | (6,264) | (4,462)
Net transfers into/(out of) Level 3, assets | (367) | (3,316) | (1,911)
Ending balance, assets | 18,926 | 21,924 | 27,418
Net unrealized gains/(losses) included in net income | 1,547 | 3,380 | 2,765
Securities available- for-sale |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |
Beginning balance, assets | 0 | 1,500 | 3,307
Total net gains/(losses) included in : Net income, assets |  | 0 | (47)
Purchases, assets |  | 0 | 0
Sales, assets |  | 0 | (1,760)
Settlements, assets |  | (1,500) | 0
Net transfers into/(out of) Level 3, assets |  | 0 | 0
Ending balance, assets |  | 0 | 1,500
Net unrealized gains/(losses) included in net income |  | 0 | 0
Mortgage servicing rights, net |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward] |  |  |
Beginning balance, assets | $ 985 | 1,841 | 2,517
Total net gains/(losses) included in : Net income, assets |  | 31 | 0
Purchases, assets |  | 0 | 0
Sales, assets |  | (205) | 0
Settlements, assets |  | (682) | (676)
Net transfers into/(out of) Level 3, assets |  | 0 | 0
Ending balance, assets |  | 985 | 1,841
Net unrealized gains/(losses) included in net income |  | $ 0 | $ 0

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- Definition Amount of unrealized (holding) gain (loss) which is included in the statement of income (or changes in net assets) related to those assets still held at the reporting date for which fair value is measured on a recurring basis using significant unobservable inputs (Level 3). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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- Definition Amount of gain (loss) recognized in the income statement for financial instrument classified as an asset measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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- Definition Amount of unrealized gain (loss) recognized in the income statement for a financial instrument classified as derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (d) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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- Definition Amount of sales of financial instrument classified as a derivative asset (liability) after deduction of derivative liability (asset), measured using unobservable inputs that reflect the entity's own assumption about the assumptions market participants would use in pricing. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 3 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19279-110258 + Details
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