Fair Value Of Assets And Liabilities (Summary Of Changes In Level 3 Assets And Liabilities Measured At Fair Value) (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013		Mar. 31, 2012
Trading Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	$ 17,992		$ 18,059
Net income	921		1,878
Other comprehensive income	0		0
Purchases, assets	0		0
Issuances, assets	0		0
Sales, assets	0		0
Settlements, assets	(2,454)		(2,551)
Net transfers into/(out of) Level 3, assets	0		0
Ending Balance	16,459		17,386
Net unrealized gains/(losses) included in net income	431	[1]	1,406	[1]
Loans Held For Sale [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	221,094		210,487
Net income	175		872
Other comprehensive income	0		0
Purchases, assets	18,467		11,027
Issuances, assets	0		0
Sales, assets	0		0
Settlements, assets	(4,228)		(5,754)
Net transfers into/(out of) Level 3, assets	(2,824)	[2]	(2,029)	[2]
Ending Balance	232,684		214,603
Net unrealized gains/(losses) included in net income	175	[1]	872	[1]
Investment Portfolio [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	5,253		7,262
Net income	0		0
Other comprehensive income	(37)		(166)
Purchases, assets	0		0
Issuances, assets	0		0
Sales, assets	0		0
Settlements, assets	(440)		(502)
Net transfers into/(out of) Level 3, assets	0		0
Ending Balance	4,776		6,594
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		12,179
Net income	0		0
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	4,300		12,179
Net unrealized gains/(losses) included in net income	0	[3]	0	[3]
Mortgage Servicing Rights Net [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	114,311		144,069
Net income	833		4,471
Other comprehensive income	0		0
Purchases, assets	0		0
Issuances, assets	0		0
Sales, assets	0		0
Settlements, assets	(6,042)		(5,584)
Net transfers into/(out of) Level 3, assets	0		0
Ending Balance	109,102		142,956
Net unrealized gains/(losses) included in net income	925	[1]	5,213	[1]
Net Derivative Liabilities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	(2,175)		(11,820)
Net income	(186)		(742)
Other comprehensive income	0		0
Purchases, liabilities	0		0
Issuances, liabilities	0		0
Sales, liabilities	0		0
Settlements, liabilities	311		9,602
Net transfers in/(out) level 3, liabilities	0		0
Ending Balance	(2,050)		(2,960)
Net unrealized gains/(losses) included in other expense	(186)	[4]	(742)	[4]
Other Short Term Borrowings [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	(11,156)		(14,833)
Net income	172		(240)
Other comprehensive income	0		0
Purchases, liabilities	0		0
Issuances, liabilities	0		0
Sales, liabilities	0		0
Settlements, liabilities	0		0
Net transfers in/(out) level 3, liabilities	0		0
Ending Balance	(10,984)		(15,073)
Net unrealized gains/(losses) included in net income	$ 172	[1]	$ (240)	[1]

[1] Primarily included in mortgage banking income on the Consolidated Condensed Statements of Income.

[2] Transfers out of recurring 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.