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				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011
Trading Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	$ 17,386		$ 25,370		$ 18,059		$ 26,478
Net income	(99)		733		1,779		2,933
Other comprehensive income	0		0		0		0
Purchases, assets	0		0		0		0
Issuances, assets	0		0		0		0
Sales, assets	0		(132)		0		(132)
Settlements, assets	(2,382)		(3,118)		(4,933)		(6,426)
Net transfers into/(out of) Level 3, assets	0		0		0		0
Ending Balance	14,905		22,853		14,905		22,853
Net unrealized gains/(losses) included in net income	(518)	[1]	286	[1]	888	[1]	2,059	[1]
Loans Held-For-Sale [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	214,603		209,863		210,487		207,632
Net income	1,078		(4,069)		1,950		(8,194)
Other comprehensive income	0		0		0		0
Purchases, assets	7,740		23,079		19,182		39,120
Issuances, assets	0		0		0		0
Sales, assets	0		0		0		0
Settlements, assets	(8,108)		(10,519)		(16,160)		(19,869)
Net transfers into/(out of) Level 3, assets	(753)	[2]	(2,484)	[2]	(899)	[2]	(2,819)	[2]
Ending Balance	214,560		215,870		214,560		215,870
Net unrealized gains/(losses) included in net income	1,078	[1]	(4,069)	[1]	1,950	[1]	(8,194)	[1]
Investment Portfolio [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	6,594		8,428		7,262		39,391
Net income	0		0		0		0
Other comprehensive income	(4)		58		(170)		(1,688)
Purchases, assets	0		0		0		0
Issuances, assets	0		0		0		0
Sales, assets	0		0		0		(29,217)
Settlements, assets	(428)		(305)		(930)		(305)
Net transfers into/(out of) Level 3, assets	0		0		0		0
Ending Balance	6,162		8,181		6,162		8,181
Net unrealized gains/(losses) included in net income	0		0		0		0
Venture Capital Investments [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	12,179		13,179		12,179		13,179
Net income	5,071		0		5,071		0
Other comprehensive income	0		0		0		0
Purchases, assets	0		0		0		0
Issuances, assets	0		0		0		0
Sales, assets	(8,250)		0		(8,250)		0
Settlements, assets	0		0		0		0
Net transfers into/(out of) Level 3, assets	0		0		0		0
Ending Balance	9,000		13,179		9,000		13,179
Net unrealized gains/(losses) included in net income	0	[3]	0	[3]	0	[3]	0	[3]
Mortgage Servicing Rights, Net [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	142,956		207,748		144,069		207,319
Net income	(6,914)		(15,006)		(2,443)		(7,359)
Other comprehensive income	0		0		0		0
Purchases, assets	0		0		0		0
Issuances, assets	0		0		0		0
Sales, assets	0		0		0		0
Settlements, assets	(6,751)		(5,784)		(12,335)		(13,002)
Net transfers into/(out of) Level 3, assets	0		0		0		0
Ending Balance	129,291		186,958		129,291		186,958
Net unrealized gains/(losses) included in net income	(6,831)	[1]	(14,802)	[1]	(1,618)	[1]	(7,048)	[1]
Net Derivative Liabilities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	(2,960)		(2,100)		(11,820)		(1,000)
Net income	(869)		(32)		(1,611)		(1,132)
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	324		862		9,926		862
Net transfers in/(out) level 3, liabilities	0		0		0		0
Ending Balance	(3,505)		(1,270)		(3,505)		(1,270)
Net unrealized gains/(losses) included in other expense	(869)	[4]	(32)	[4]	(1,611)	[4]	(667)	[4]
Other Short-Term Borrowings [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning Balance	(15,073)		(27,991)		(14,833)		(27,309)
Net income	2,634		4,346		2,394		3,664
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	0		0		0		0
Net transfers in/(out) level 3, liabilities	0		0		0		0
Ending Balance	(12,439)		(23,645)		(12,439)		(23,645)
Net unrealized gains/(losses) included in net income	$ 2,634	[1]	$ 4,346	[1]	$ 2,394	[1]	$ 3,664	[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.