Commitments And Contingencies (Changes To Anticipated Loan Losses) (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Commitments and Contingencies Disclosure [Abstract]
Loss Contingency Accrual, Period Increase (Decrease)		$ 32,600
Changes in loan origination liability [Roll Forward]
Liabilities, beginning of period	$ 46,381	58,222	$ 124,956
Reserves provided (released), net	506	(11,433)	(18,604)
Payments	(11,773)	(408)	(48,130)
Liabilities, end of period	$ 35,114	$ 46,381	$ 58,222

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- Definition

Amount of loss contingency liability.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

+ Details

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- Definition

Amount of increase (decrease) in loss contingency liability.

+ References

+ Details

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- Definition

Amount of cash outflow reducing loss contingency liability.

+ References

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- Definition

Amount charged against operating income increasing loss contingency liability, after adjustments to reduce previously estimated charges.

+ References

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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

No definition available.

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