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 $)					6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2011	Dec. 31, 2010	Jun. 30, 2012 First Liens [Member] Y		Jun. 30, 2011 First Liens [Member] Y		Jun. 30, 2012 Second Liens [Member] Y		Jun. 30, 2011 Second Liens [Member] Y		Jun. 30, 2012 HELOC [Member] Y		Jun. 30, 2011 HELOC [Member] Y
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	$ 129,291,000	$ 144,069,000	$ 186,958,000	$ 207,319,000	$ 126,085,000		$ 183,530,000		$ 215,000		$ 251,000		$ 2,991,000		$ 3,177,000
Weighted average life (in years)					3.9		4.3		2.9		2.9		2.8		2.6
Annual prepayment rate					21.40%		20.00%		26.00%		26.00%		26.60%		29.40%
Annual prepayment rate, Impact on fair value of 10% adverse change					(6,698,000)		(9,109,000)		(14,000)		(16,000)		(179,000)		(229,000)
Annual prepayment rate, Impact on fair value of 20% adverse change					(12,792,000)		(17,448,000)		(26,000)		(31,000)		(344,000)		(439,000)
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					(3,486,000)		(5,304,000)		(6,000)		(7,000)		(93,000)		(96,000)
Annual discount rate on servicing cash flows, Impact on fair value of 20% adverse change					(6,765,000)		(10,273,000)		(11,000)		(14,000)		(181,000)		(187,000)
Annual cost to service (per loan)					116	[1]	118	[1]	50	[1]	50	[1]	50	[1]	50	[1]
Annual cost to service (per loan), Impact on fair value of 10% adverse change					(3,014,000)	[1]	(3,830,000)	[1]	(5,000)	[1]	(6,000)	[1]	(46,000)	[1]	(51,000)	[1]
Annual cost to service (per loan), Impact on fair value of 20% adverse change					(6,007,000)	[1]	(7,633,000)	[1]	(10,000)	[1]	(11,000)	[1]	(91,000)	[1]	(101,000)	[1]
Annual earnings on escrow					1.40%		1.40%		0.00%		0.00%		0.00%		0.00%
Annual earnings on escrow, Impact on fair value of 10% adverse change					(824,000)		(1,727,000)		0		0		0		0
Annual earnings on escrow, Impact on fair value of 20% adverse change					$ (1,648,000)		$ (3,454,000)		$ 0		$ 0		$ 0		$ 0

[1] Amounts represent market participant based assumptions.