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Fair Value Of Assets And Liabilities (Summary Of Changes In Level 3 Assets And Liabilities Measured At Fair Value) (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2017 | Mar. 31, 2016
Trading Account Assets [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Beginning Balance |  | $ 2,573 | $ 4,377
Net income |  | 17 | 147
Purchases, assets |  | 0 | 0
Settlements, assets |  | (255) | (1,467)
Net transfers into/(out of) Level 3, assets |  | 0 | 0
Ending Balance |  | 2,335 | 3,057
Net unrealized gains/(losses) included in net income | [1] | (27) | (115)
Loans Held For Sale [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Beginning Balance |  | 21,924 | 27,418
Net income |  | 922 | 342
Purchases, assets |  | 32 | 148
Settlements, assets |  | (1,574) | (1,365)
Net transfers into/(out of) Level 3, assets | [2] | (83) | (256)
Ending Balance |  | 21,221 | 26,287
Net unrealized gains/(losses) included in net income | [1] | 922 | 342
AFS Securities [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Beginning Balance |  |  | 1,500
Net income |  |  | 0
Purchases, assets |  |  | 0
Settlements, assets |  |  | 0
Net transfers into/(out of) Level 3, assets |  |  | 0
Ending Balance |  |  | 1,500
Net unrealized gains/(losses) included in net income |  |  | 0
Mortgage Servicing Rights Net [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Beginning Balance |  |  | 1,841
Net income |  |  | 0
Purchases, assets |  |  | 0
Settlements, assets |  |  | (116)
Net transfers into/(out of) Level 3, assets |  |  | 0
Ending Balance |  |  | 1,725
Net unrealized gains/(losses) included in net income |  |  | 0
Net Derivative Liabilities [Member] |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |
Beginning Balance |  | (6,245) | (4,810)
Net income |  | (1) | (109)
Purchases, liabilities |  | 0 | 0
Settlements, liabilities |  | 296 | 299
Net transfers in/(out) level 3, liabilities |  | 0 | 0
Ending Balance |  | (5,950) | (4,620)
Net unrealized gains/(losses) included in other expense | [3] | $ (1) | $ (109)
[1] | Primarily included in mortgage banking income on the Consolidated Condensed Statements of Income.
[2] | Transfers out of loans held-for-sale level 3 measured on a recurring basis generally r eflect movements into real estate acquired by foreclosure (level 3 nonrecurring).
[3] | Included in Other expense.

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- Definition Fair Value Assets Or Liabilities Measured On Recurring Basis Change In Unrealized Gain Loss Included In Mortgage Banking Income + References No definition available. + Details
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- Definition Fair Value Measurement With Unobservable Inputs Reconciliation Recurring Basis Asset or Liability Value. + References No definition available. + Details
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- Definition Amount of purchases of 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)(2) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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