Commitments and Contingencies (Changes To Anticipated Loan Losses) (Details) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Sep. 30, 2017	Sep. 30, 2016	Sep. 30, 2017	Sep. 30, 2016
Loss Contingency Accrual [Roll Forward]
Liabilities, beginning of period	$ 34,934	$ 35,945	$ 35,114	$ 46,381
Reserves provided (released), net	(39)	(138)	(44)	629
Payments	(152)	(264)	(327)	(11,467)
Liabilities, end of period	$ 34,743	$ 35,543	$ 34,743	$ 35,543

Amount of loss contingency liability.

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=82911808&loc=d3e14326-108349

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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.

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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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