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, 2011	Dec. 31, 2010	Jun. 30, 2010	Dec. 31, 2009	Jun. 30, 2011 First Liens [Member]	Jun. 30, 2010 First Liens [Member]	Jun. 30, 2011 Second Liens [Member]	Jun. 30, 2010 Second Liens [Member]	Jun. 30, 2011 HELOC [Member]	Jun. 30, 2010 HELOC [Member]
Fair value of retained interests	$ 186,958,000	$ 207,319,000	$ 201,746,000	$ 302,611,000	$ 183,530,000	$ 197,953,000	$ 251,000	$ 242,000	$ 3,177,000	$ 3,551,000
Weighted average life (in years)					4.3	3.7	2.9	2.3	2.6	2.5
Annual prepayment rate					20.00%	22.60%	26.00%	33.00%	29.40%	31.60%
Annual prepayment rate, Impact on fair value of 10% adverse change					(9,109,000)	(11,766,000)	(16,000)	(24,000)	(229,000)	(446,000)
Annual prepayment rate, Impact on fair value of 20% adverse change					(17,448,000)	(22,425,000)	(31,000)	(47,000)	(439,000)	(854,000)
Annual discount rate on servicing cash flows					11.60%	11.80%	14.00%	14.00%	18.00%	18.00%
Annual discount rate on servicing cash flows, Impact on fair value of 10% adverse change					(5,304,000)	(5,189,000)	(7,000)	(7,000)	(96,000)	(173,000)
Annual discount rate on servicing cash flows, Impact on fair value of 20% adverse change					(10,273,000)	(10,071,000)	(14,000)	(13,000)	(187,000)	(336,000)
Annual cost to service (per loan)					118	115	50	50	50	50
Annual cost to service (per loan), Impact on fair value of 10% adverse change					(3,830,000)	(4,975,000)	(6,000)	(5,000)	(51,000)	(113,000)
Annual cost to service (per loan), Impact on fair value of 20% adverse change					(7,633,000)	(9,922,000)	(11,000)	(10,000)	(101,000)	(226,000)
Annual earnings on escrow					1.40%	2.00%
Annual earnings on escrow, Impact on fair value of 10% adverse change					(1,727,000)	(2,484,000)
Annual earnings on escrow, Impact on fair value of 20% adverse change					$ (3,454,000)	$ (4,968,000)