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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 | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Trading Securities |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Beginning Balance | $ 2,464 | $ 2,826 | $ 2,573 | $ 4,377
Net income | 92 | 304 | 380 | 506
Purchases, assets | 0 | 0 | 0 | 0
Sales, assets |  |  | 0 | 0
Settlements, assets | (251) | (346) | (648) | (2,099)
Net transfers into/(out of) Level 3, assets | 0 | 0 | 0 | 0
Ending Balance | 2,305 | 2,784 | 2,305 | 2,784
Net unrealized gains/(losses) included in net income | 62 | 244 | 264 | 324
SBA - Interest Only Strips |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Beginning Balance | 1,163 |  | 0 |
Net income | (160) |  | 107 |
Purchases, assets | 0 |  | 1,413 |
Sales, assets |  |  | (3,291) |
Settlements, assets | 0 |  | 0 |
Net transfers into/(out of) Level 3, assets | 2,120 |  | 4,894 |
Ending Balance | 3,123 |  | 3,123 |
Net unrealized gains/(losses) included in net income | (72) |  | (122) |
Loans Held For Sale |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Beginning Balance | 20,587 | 25,738 | 21,924 | 27,418
Net income | 390 | 1,604 | 1,722 | 2,375
Purchases, assets | 43 | 198 | 118 | 673
Sales, assets |  |  | 0 | 0
Settlements, assets | (939) | (2,146) | (3,340) | (4,643)
Net transfers into/(out of) Level 3, assets | 0 | (2,858) | (343) | (3,287)
Ending Balance | 20,081 | 22,536 | 20,081 | 22,536
Net unrealized gains/(losses) included in net income | 390 | 1,604 | 1,722 | 2,375
AFS Securities [Member] |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Beginning Balance |  | 1,500 |  | 1,500
Net income |  | 0 |  | 0
Purchases, assets |  | 0 |  | 0
Sales, assets |  |  |  | 0
Settlements, assets |  | (1,500) |  | (1,500)
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 |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Beginning Balance |  | 1,406 |  | 1,841
Net income |  | 0 |  | 31
Purchases, assets |  | 0 |  | 0
Sales, assets |  |  |  | (205)
Settlements, assets |  | (160) |  | (421)
Net transfers into/(out of) Level 3, assets |  | 0 |  | 0
Ending Balance |  | 1,246 |  | 1,246
Net unrealized gains/(losses) included in net income |  | 0 |  | 0
Net Derivative Liabilities |  |  |  |
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items] |  |  |  |
Beginning Balance | (5,700) | (6,835) | (6,245) | (4,810)
Net income | (129) | (4) | (179) | (2,627)
Purchases, liabilities | 0 | 0 | 0 | 0
Sales, liabilities |  |  | 0 | 0
Settlements, liabilities | 299 | 299 | 894 | 897
Net transfers in/(out) level 3, liabilities | 0 | 0 | 0 | 0
Ending Balance | (5,530) | (6,540) | (5,530) | (6,540)
Net unrealized gains/(losses) included in other expense | $ (129) | $ (4) | $ (179) | $ (2,627)

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