Fair Value Measurements (Information Regarding Quantitative Inputs Used To Value Assets Classified As Level 3) (Details) - Significant Unobservable Inputs (Level 3) [Member] - USD ($)	Sep. 30, 2018	Dec. 31, 2017
Impaired Loans [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, Fair Value	$ 1,857,000	$ 2,523,000
Impaired Loans [Member] \| Maximum [Member] \| Discounted Appraised Value [Member] \| Selling Cost [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans	10.0	10.0
Impaired Loans [Member] \| Maximum [Member] \| Discounted Appraised Value [Member] \| Discount For Lack Of Marketability And Age Of Appraisal [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans	20.0	20.0
Impaired Loans [Member] \| Minimum [Member] \| Discounted Appraised Value [Member] \| Selling Cost [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans	0.0	0.0
Impaired Loans [Member] \| Minimum [Member] \| Discounted Appraised Value [Member] \| Discount For Lack Of Marketability And Age Of Appraisal [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans	0.0	0.0
Impaired Loans [Member] \| Weighted Average [Member] \| Discounted Appraised Value [Member] \| Selling Cost [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans	8.0	8.0
Impaired Loans [Member] \| Weighted Average [Member] \| Discounted Appraised Value [Member] \| Discount For Lack Of Marketability And Age Of Appraisal [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Impaired loans	6.0	6.0
OREO [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
Assets, Fair Value	$ 2,455,000	$ 2,650,000
OREO [Member] \| Maximum [Member] \| Discounted Appraised Value [Member] \| Selling Cost [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
OREO	10.0	10.0
OREO [Member] \| Maximum [Member] \| Discounted Appraised Value [Member] \| Discount For Lack Of Marketability And Age Of Appraisal [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
OREO	25.0	25.0
OREO [Member] \| Minimum [Member] \| Discounted Appraised Value [Member] \| Selling Cost [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
OREO	0.0	0.0
OREO [Member] \| Minimum [Member] \| Discounted Appraised Value [Member] \| Discount For Lack Of Marketability And Age Of Appraisal [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
OREO	0.0	0.0
OREO [Member] \| Weighted Average [Member] \| Discounted Appraised Value [Member] \| Selling Cost [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
OREO	6.0	6.0
OREO [Member] \| Weighted Average [Member] \| Discounted Appraised Value [Member] \| Discount For Lack Of Marketability And Age Of Appraisal [Member]
Fair Value Inputs, Assets, Quantitative Information [Line Items]
OREO	15.0	15.0

Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

Value of input used to measure long-term debt.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (bbb)(2)
-URI http://asc.fasb.org/extlink&oid=99377789&loc=d3e19207-110258

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- Definition

Value of input used to measure real estate owned by financial institution by financial institution which is not directly related to its business.

+ References

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