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Troubled Debt Restructurings (Loans By Class Of Financing Receivable Modified As TDRs) (Details) $ in Thousands	9 Months Ended		12 Months Ended
	Sep. 30, 2017 contract	Sep. 30, 2016 USD ($) contract	Dec. 31, 2016 contract
Troubled Debt Restructuring, Subsequent Periods [Line Items]
Number of Contracts	20		26
Troubled Debt Restructurings Within Previous Twelve Months [Member]
Troubled Debt Restructuring, Subsequent Periods [Line Items]
Number of Contracts		1
Recorded Investment | $		$ 74
Residential Single Family | Troubled Debt Restructurings Within Previous Twelve Months [Member]
Troubled Debt Restructuring, Subsequent Periods [Line Items]
Number of Contracts		1
Recorded Investment | $		$ 74

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- Definition

Troubled debt restructuring modifications recorded investment.

+ References

No definition available.

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- Definition

Troubled Debt Restructuring, Subsequent Periods [Line Items]

+ References

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- Definition

Number of financing receivables that have been modified by troubled debt restructurings.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
-SubTopic 10
-Section 50
-Paragraph 33
-URI http://asc.fasb.org/extlink&oid=84173941&loc=SL6953676-111524

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