Commitments And Contingencies (Changes To Anticipated Loan Losses) (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Changes in loan origination liability [Roll Forward]
Liabilities, beginning of period		$ 50,282	$ 34,641	$ 35,114
Reserves provided (released), net	$ (16,200)	225	(16,130)	50
Payments		(24,898)	(489)	(423)
Liabilities, end of period	$ 50,282	$ 25,159	$ 50,282	$ 34,641

Amount of loss contingency liability.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=118942415&loc=d3e14326-108349

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- Definition

Amount of cash outflow reducing loss contingency liability.

+ References

+ Details

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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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Balance Type:	debit
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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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