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Fair Value (Financial Instruments Measured At Fair Value On A Non-Recurring Basis) (Details) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2018 | Dec. 31, 2017
Commercial [Member] |  |
Impaired loans: |  |
Impaired loans at Fair Value | $ 111 | $ 115
Impaired loans: |  |
Valuation Technique(s) | Comparable sales approach |
Commercial [Member] | Weighted Average [Member] |  |
Impaired loans: |  |
Fair Value Inputs, Adjustment for differences between the comparable market transactions | 3.48% | 3.48%
Single-Family Residential [Member] |  |
Impaired loans: |  |
Impaired loans at Fair Value | $ 115 | $ 116
Impaired loans: |  |
Valuation Technique(s) | Comparable sales approach |
Single-Family Residential [Member] | Minimum [Member] |  |
Impaired loans: |  |
Fair Value Inputs, Adjustment for differences between the comparable market transactions | 1.81% | 1.81%
Single-Family Residential [Member] | Maximum [Member] |  |
Impaired loans: |  |
Fair Value Inputs, Adjustment for differences between the comparable market transactions | 3.61% | 3.61%
Single-Family Residential [Member] | Weighted Average [Member] |  |
Impaired loans: |  |
Fair Value Inputs, Adjustment for differences between the comparable market transactions | 2.91% | 2.91%
Non-Owner Occupied [Member] |  |
Impaired loans: |  |
Impaired loans at Fair Value | $ 2,815 | $ 2,832
Impaired loans: |  |
Valuation Technique(s) | Comparable sales approach |
Non-Owner Occupied [Member] | Minimum [Member] |  |
Impaired loans: |  |
Fair Value Inputs, Adjustment for differences between the comparable market transactions | 3.48% | 3.48%
Non-Owner Occupied [Member] | Maximum [Member] |  |
Impaired loans: |  |
Fair Value Inputs, Adjustment for differences between the comparable market transactions | 9.64% | 9.64%
Non-Owner Occupied [Member] | Weighted Average [Member] |  |
Impaired loans: |  |
Fair Value Inputs, Adjustment for differences between the comparable market transactions | 5.15% | 5.15%

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- Definition Percentage of adjustment to the observed price for a similar asset or liability when an identical transaction does not exist, used as an input to measure fair value. + 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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