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Fair Value Measurements (Information Regarding Quantitative Inputs Used To Value Assets Classified As Level 3) (Details) - Significant Unobservable Inputs (Level 3) [Member] - USD ($) | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2018 | Dec. 31, 2017
Impaired Loans [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Assets, Fair Value | $ 2,266,000 | $ 2,523,000
Impaired Loans [Member] | Maximum [Member] | Discounted Appraised Value [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Selling cost | 10.00% | 10.00%
Discount for lack of marketability and age of appraisal | 20.00% | 20.00%
Impaired Loans [Member] | Minimum [Member] | Discounted Appraised Value [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Selling cost | 0.00% | 0.00%
Discount for lack of marketability and age of appraisal | 0.00% | 0.00%
Impaired Loans [Member] | Weighted Average [Member] | Discounted Appraised Value [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Selling cost | 8.00% | 8.00%
Discount for lack of marketability and age of appraisal | 6.00% | 6.00%
OREO [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Assets, Fair Value | $ 2,096,000 | $ 2,650,000
OREO [Member] | Maximum [Member] | Discounted Appraised Value [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Selling cost | 10.00% | 10.00%
Discount for lack of marketability and age of appraisal | 25.00% | 25.00%
OREO [Member] | Minimum [Member] | Discounted Appraised Value [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Selling cost | 0.00% | 0.00%
Discount for lack of marketability and age of appraisal | 0.00% | 0.00%
OREO [Member] | Weighted Average [Member] | Discounted Appraised Value [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Selling cost | 6.00% | 6.00%
Discount for lack of marketability and age of appraisal | 15.00% | 15.00%

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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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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. + Details
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- Definition Adjustment to the discount rate used to measure fair value for lack of ability to convert business interests into cash quickly. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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- Definition Interest rate used to find the present value of an amount to be paid or received in the future as an input to measure fair value. For example, but not limited to, weighted average cost of capital (WACC), cost of capital, cost of equity and cost of debt. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (bbb) -URI http://asc.fasb.org/extlink&oid=66048111&loc=d3e19207-110258 + Details
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