Fair Value Of Assets And Liabilities (Summary Of Changes In Level 3 Assets And Liabilities Measured At Fair Value) (Details) - USD ($)		3 Months Ended			6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014		Jun. 30, 2015	Jun. 30, 2014
Trading Account Assets [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance		$ 5,326,000	$ 6,593,000		$ 5,643,000	$ 7,200,000
Net income		69,000	43,000		239,000	(42,000)
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		(466,000)	(215,000)		(953,000)	(581,000)
Net transfers into/(out of) Level 3, assets		0	0		0	0
Ending Balance		4,929,000	6,421,000		4,929,000	6,421,000
Net unrealized gains/(losses) included in net income	[1]	69,000	(74,000)		239,000	34,000
Loans Held For Sale [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance		26,700,000	229,219,000		27,910,000	230,456,000
Net income		248,000	8,214,000		1,390,000	9,401,000
Other comprehensive income		0	0		0	0
Purchases, assets		324,000	476,000		1,178,000	4,582,000
Issuances, assets		0	0		0	0
Sales, assets		0	0		0	0
Settlements, assets		(329,000)	(4,607,000)		(2,819,000)	(8,800,000)
Net transfers into/(out of) Level 3, assets	[2]	(418,000)	(815,000)		(1,134,000)	(3,152,000)
Ending Balance		26,525,000	232,487,000		26,525,000	232,487,000
Net unrealized gains/(losses) included in net income	[1]	248,000	8,214,000		1,390,000	9,401,000
Investment Portfolio [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance		3,191,000	3,682,000		3,307,000	3,826,000
Net income		0	0		0	0
Other comprehensive income		(14,000)	(15,000)		(28,000)	(32,000)
Purchases, assets		0	0		0	0
Issuances, assets		0	0		0	0
Sales, assets		0	0		0	0
Settlements, assets		(117,000)	(106,000)		(219,000)	(233,000)
Net transfers into/(out of) Level 3, assets		0	0		0	0
Ending Balance		3,060,000	3,561,000		3,060,000	3,561,000
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			4,300,000			4,300,000
Net income			(2,000,000)			(2,000,000)
Other comprehensive income			0			0
Purchases, assets			0			0
Issuances, assets			0			0
Sales, assets			0			0
Settlements, assets			0			0
Net transfers into/(out of) Level 3, assets			0			0
Ending Balance			2,300,000			2,300,000
Net unrealized gains/(losses) included in net income	[3]		(2,000,000)			(2,000,000)
Mortgage Servicing Rights Net [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance		2,342,000	4,687,000		2,517,000	72,793,000
Net income		0	113,000		0	1,246,000
Other comprehensive income		0	0		0	0
Purchases, assets		0	0		0	0
Issuances, assets		0	0		0	0
Sales, assets		0	(1,400,000)		0	(69,919,000)
Settlements, assets		(184,000)	(203,000)		(359,000)	(923,000)
Net transfers into/(out of) Level 3, assets		0	0		0	0
Ending Balance		2,158,000	3,197,000		2,158,000	3,197,000
Net unrealized gains/(losses) included in net income		0	77,000	[1]	0	150,000	[1]
Net Derivative Liabilities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance		(5,005,000)	(4,945,000)		(5,240,000)	(2,915,000)
Net income		(107,000)	(101,000)		(164,000)	(2,442,000)
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		594,000	632,000
Net transfers in/(out) level 3, liabilities		0	0		0	0
Ending Balance		(4,810,000)	(4,725,000)		(4,810,000)	(4,725,000)
Net unrealized gains/(losses) included in other expense	[4]	$ (107,000)	$ (101,000)		$ (164,000)	$ (2,442,000)

[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] Represents recognized gains and losses attributable to venture capital investments classified within securities available-for-sale that are included in securities gains/(losses) in noninterest income.

[4] Included in Other expense.