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.