Loan Sales And Securitizations (Schedule Of Sensitivity Of Fair Value Of Retained Or Purchased MSR Immediate 10 Percent And 20 Percent Adverse Changes In Assumptions) (Details) (USD $) In Thousands, unless otherwise specified					3 Months Ended
	Mar. 31, 2012	Dec. 31, 2011	Mar. 31, 2011	Dec. 31, 2010	Mar. 31, 2012 First Liens [Member]		Mar. 31, 2011 First Liens [Member]		Mar. 31, 2012 Second Liens [Member]		Mar. 31, 2011 Second Liens [Member]		Mar. 31, 2012 HELOC [Member]		Mar. 31, 2011 HELOC [Member]
Sensitivity Analysis of Fair Value of Interests Continued to be Held by Transferor, Servicing Assets or Liabilities, Impact of Adverse Change in Assumption [Line Items]
Fair value of retained interests	$ 142,956	$ 144,069	$ 207,748	$ 207,319	$ 139,676		$ 204,257		$ 222		$ 259		$ 3,058		$ 3,232
Weighted average life (in years)					4.0		4.5		2.9		2.4		2.8		2.5
Annual prepayment rate					20.80%		19.30%		26.00%		33.00%		27.50%		30.30%
Annual prepayment rate, Impact on fair value of 10% adverse change					(7,218)		(9,445)		(14)		(15)		(190)		(238)
Annual prepayment rate, Impact on fair value of 20% adverse change					(13,794)		(18,122)		(27)		(28)		(365)		(456)
Annual discount rate on servicing cash flows					11.80%		11.60%		14.00%		14.00%		18.00%		18.00%
Annual discount rate on servicing cash flows, Impact on fair value of 10% adverse change					(3,939)		(5,934)		(6)		(5)		(95)		(97)
Annual discount rate on servicing cash flows, Impact on fair value of 20% adverse change					(7,638)		(11,484)		(12)		(10)		(184)		(188)
Annual cost to service (per loan)					116	[1]	120	[1]	50	[1]	50	[1]	50	[1]	50	[1]
Annual cost to service (per loan), Impact on fair value of 10% adverse change					(3,303)	[1]	(4,909)	[1]	(5)	[1]	(5)	[1]	(49)	[1]	(52)	[1]
Annual cost to service (per loan), Impact on fair value of 20% adverse change					(6,585)	[1]	(9,790)	[1]	(10)	[1]	(10)	[1]	(98)	[1]	(104)	[1]
Annual earnings on escrow					1.40%		1.40%
Annual earnings on escrow, Impact on fair value of 10% adverse change					(1,127)		(2,283)
Annual earnings on escrow, Impact on fair value of 20% adverse change					$ (2,255)		$ (4,567)

[1] Amounts represent market participant based assumptions.