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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 ($) | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014
Trading Account Assets [Member] |  |  |  |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |
Beginning Balance |  | $ 4,929,000 | $ 6,421,000 |  | $ 5,642,000 | $ 7,200,000 |
Net income |  | 57,000 | 191,000 |  | 296,000 | 149,000 |
Other comprehensive income |  | 0 | 0 |  | 0 | 0 |
Purchases, assets |  | 0 | 0 |  | 0 | 1,559,000 |
Issuances, assets |  | 0 | 0 |  | 0 | 0 |
Sales, assets |  | 0 | 0 |  | 0 | (1,715,000) |
Settlements, assets |  | (383,000) | (489,000) |  | (1,335,000) | (1,070,000) |
Net transfers into/(out of) Level 3, assets |  | 0 | 0 |  | 0 | 0 |
Ending Balance |  | 4,603,000 | 6,123,000 |  | 4,603,000 | 6,123,000 |
Net unrealized gains/(losses) included in net income | [1] | 57,000 | 191,000 |  | 296,000 | 225,000 |
Loans Held For Sale [Member] |  |  |  |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |
Beginning Balance |  | 26,525,000 | 232,487,000 |  | 27,910,000 | 230,456,000 |
Net income |  | 803,000 | 41,757,000 |  | 2,193,000 | 51,158,000 |
Other comprehensive income |  | 0 | 0 |  | 0 | 0 |
Purchases, assets |  | 1,902,000 | 522,000 |  | 3,080,000 | 5,104,000 |
Issuances, assets |  | 0 | 0 |  | 0 | 0 |
Sales, assets |  | 0 | (236,975,000) |  | 0 | (236,975,000) |
Settlements, assets |  | (1,664,000) | (5,967,000) |  | (4,483,000) | (14,767,000) |
Net transfers into/(out of) Level 3, assets | [2] | (777,000) | (381,000) |  | (1,911,000) | (3,533,000) |
Ending Balance |  | 26,789,000 | 31,443,000 |  | 26,789,000 | 31,443,000 |
Net unrealized gains/(losses) included in net income | [1] | 803,000 | 1,828,000 |  | 2,193,000 | 1,828,000 |
Investment Portfolio [Member] |  |  |  |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |
Beginning Balance |  | 3,060,000 | 3,561,000 |  | 3,307,000 | 3,826,000 |
Net income |  | 0 | 0 |  | 0 | 0 |
Other comprehensive income |  | (16,000) | (16,000) |  | (44,000) | (48,000) |
Purchases, assets |  | 0 | 0 |  | 0 | 0 |
Issuances, assets |  | 0 | 0 |  | 0 | 0 |
Sales, assets |  | 0 | 0 |  | 0 | 0 |
Settlements, assets |  | (98,000) | (116,000) |  | (317,000) | (349,000) |
Net transfers into/(out of) Level 3, assets |  | 0 | 0 |  | 0 | 0 |
Ending Balance |  | 2,946,000 | 3,429,000 |  | 2,946,000 | 3,429,000 |
Net unrealized gains/(losses) included in net income |  | 0 | 0 |  | 0 | 0 |
Venture Capital Funds [Member] |  |  |  |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |
Beginning Balance |  |  | 2,300,000 |  |  | 4,300,000 |
Net income |  |  | (995,000) |  |  | (2,995,000) |
Other comprehensive income |  |  | 0 |  |  | 0 |
Purchases, assets |  |  | 0 |  |  | 0 |
Issuances, assets |  |  | 0 |  |  | 0 |
Sales, assets |  |  | (5,000) |  |  | (5,000) |
Settlements, assets |  |  | (1,300,000) |  |  | (1,300,000) |
Net transfers into/(out of) Level 3, assets |  |  | 0 |  |  | 0 |
Ending Balance |  |  | 0 |  |  | 0 |
Net unrealized gains/(losses) included in net income |  |  | 0 |  |  | 0 |
Mortgage Servicing Rights Net [Member] |  |  |  |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |
Beginning Balance |  | 2,158,000 | 3,197,000 |  | 2,517,000 | 72,793,000 |
Net income |  | 0 | 19,000 |  | 0 | 1,265,000 |
Other comprehensive income |  | 0 | 0 |  | 0 | 0 |
Purchases, assets |  | 0 | 0 |  | 0 | 0 |
Issuances, assets |  | 0 | 0 |  | 0 | 0 |
Sales, assets |  | 0 | (152,000) |  | 0 | (70,071,000) |
Settlements, assets |  | (165,000) | (184,000) |  | (524,000) | (1,107,000) |
Net transfers into/(out of) Level 3, assets |  | 0 | 0 |  | 0 | 0 |
Ending Balance |  | 1,993,000 | 2,880,000 |  | 1,993,000 | 2,880,000 |
Net unrealized gains/(losses) included in net income |  | 0 | 17,000 | [1] | 0 | 50,000 | [1]
Net Derivative Liabilities [Member] |  |  |  |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |  |  |  |
Beginning Balance |  | (4,810,000) | (4,725,000) |  | (5,240,000) | (2,915,000) |
Net income |  | (302,000) | (3,236,000) |  | (466,000) | (5,678,000) |
Other comprehensive income |  | 0 | 0 |  | 0 | 0 |
Purchases, liabilities |  | 0 | 0 |  | 0 | 0 |
Issuances, liabilities |  | 0 | 0 |  | 0 | 0 |
Sales, liabilities |  | 0 | 0 |  | 0 | 0 |
Settlements, liabilities |  | 302,000 | 321,000 |  | 896,000 | 953,000 |
Net transfers in/(out) level 3, liabilities |  | 0 | 0 |  | 0 | 0 |
Ending Balance |  | (4,810,000) | (7,640,000) |  | (4,810,000) | (7,640,000) |
Net unrealized gains/(losses) included in other expense | [3] | $ (302,000) | $ (3,236,000) |  | $ (466,000) | $ (5,678,000) |
[1] | Primarily included in mortgage banking income on the Consolidated Condensed Statements of Income.
[2] | Transfers out of recurring loans held-for-sale level 3 balances reflect movements out of loans held-for-sale and into real estate acquired by foreclosure (level 3 nonrecurring).
[3] | Included in Other expense.

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