Mortgage Servicing Rights (Summary Of Changes In Capitalized MSR) (Details) (USD $) In Thousands	9 Months Ended
Sep. 30, 2011	Sep. 30, 2010
Participating Mortgage Loans [Line Items]
Servicing asset at fair value, amount, beginning balance	$ 207,319	$ 302,611
Adjustment due to adoption of amendments to ASC 810		(2,293)
Reductions due to loan payments	(18,164)	(25,932)
Reductions due to exercise of cleanup calls	(195)
Reductions due to sale		(24,558)
Changes in valuation model inputs or assumptions	(38,230)	(57,981)
Other changes in fair value	73	96
Servicing asset at fair value, amount, ending balance	150,803	191,943
First Liens [Member]
Participating Mortgage Loans [Line Items]
Servicing asset at fair value, amount, beginning balance	203,812	296,115
Adjustment due to adoption of amendments to ASC 810		(197)
Reductions due to loan payments	(17,972)	(24,783)
Reductions due to exercise of cleanup calls	(195)
Reductions due to sale		(24,558)
Changes in valuation model inputs or assumptions	(38,230)	(57,981)
Other changes in fair value	16	(199)
Servicing asset at fair value, amount, ending balance	147,431	188,397
Second Liens [Member]
Participating Mortgage Loans [Line Items]
Servicing asset at fair value, amount, beginning balance	262	1,174
Adjustment due to adoption of amendments to ASC 810		(928)
Reductions due to loan payments	(31)	(24)
Other changes in fair value	10	28
Servicing asset at fair value, amount, ending balance	241	250
HELOC [Member]
Participating Mortgage Loans [Line Items]
Servicing asset at fair value, amount, beginning balance	3,245	5,322
Adjustment due to adoption of amendments to ASC 810		(1,168)
Reductions due to loan payments	(161)	(1,125)
Other changes in fair value	47	267
Servicing asset at fair value, amount, ending balance	$ 3,131	$ 3,296

Changes In Servicing Asset Fair Value Adjustment Due To Adoption Of Amendments To ASC 810

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Reductions Of Servicing Asset At Fair Value Due To Exercise Of Cleanup Calls

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Decrease in servicing assets subsequently measured at fair value resulting from loan payments received.

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Fair value as of the balance sheet date of an asset representing net future revenues from contractually specified servicing fees, late charges, and other ancillary revenues, in excess of future costs related to servicing arrangements.

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