Fair Value Of Assets And Liabilities (Summary Of Changes In Level 3 Assets And Liabilities Measured At Fair Value) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Trading Account Assets [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	$ 5,643,000		$ 7,200,000
Net income	170,000		(85,000)
Other comprehensive income	0		0
Purchases, assets	0		1,559,000
Issuances, assets	0		0
Sales, assets	0		(1,715,000)
Settlements, assets	(487,000)		(366,000)
Net transfers into/(out of) Level 3, assets	0		0
Ending Balance	5,326,000		6,593,000
Net unrealized gains/(losses) included in net income	171,000	[1]	40,000	[1]
Loans Held For Sale [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	27,910,000		230,456,000
Net income	1,142,000		1,187,000
Other comprehensive income	0		0
Purchases, assets	854,000		4,106,000
Issuances, assets	0		0
Sales, assets	0		0
Settlements, assets	(3,922,000)		(4,193,000)
Net transfers into/(out of) Level 3, assets	716,000	[2]	(2,337,000)	[2]
Ending Balance	26,700,000		229,219,000
Net unrealized gains/(losses) included in net income	1,142,000	[1]	1,187,000	[1]
Investment Portfolio [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	3,307,000		3,826,000
Net income	0		0
Other comprehensive income	(14,000)		(17,000)
Purchases, assets	0		0
Issuances, assets	0		0
Sales, assets	0		0
Settlements, assets	(102,000)		(127,000)
Net transfers into/(out of) Level 3, assets	0		0
Ending Balance	3,191,000		3,682,000
Net unrealized gains/(losses) included in net income	0		0
Venture Capital Funds [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance			4,300,000
Net income			0
Other comprehensive income			0
Purchases, assets			0
Issuances, assets			0
Sales, assets			0
Settlements, assets			0
Net transfers into/(out of) Level 3, assets			0
Ending Balance			4,300,000
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	2,517,000		72,793,000
Net income	0		1,133,000
Other comprehensive income	0		0
Purchases, assets	0		0
Issuances, assets	0		0
Sales, assets	0		(68,519,000)
Settlements, assets	(175,000)		(720,000)
Net transfers into/(out of) Level 3, assets	0		0
Ending Balance	2,342,000		4,687,000
Net unrealized gains/(losses) included in net income	0	[1]	73,000	[1]
Net Derivative Liabilities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	(5,240,000)		(2,915,000)
Net income	(57,000)		(2,341,000)
Other comprehensive income	0		0
Purchases, assets	0		0
Issuances, assets	0		0
Sales, assets	0		0
Settlements, assets	292,000		311,000
Net transfers into/(out of) Level 3, assets	0		0
Ending Balance	(5,005,000)		(4,945,000)
Net unrealized gains/(losses) included in other expense	$ (57,000)	[3]	$ (2,341,000)	[3]

[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.