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Fair Value Measurements, Quantitative Information (Details) - Appraised Collateral Values [Member] - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2018 | Dec. 31, 2017
Impaired Loans [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Fair Value | $ 2,425 | $ 1,569
Valuation Technique(s) | Appraised Collateral Values | Appraised Collateral Values
Impaired Loans [Member] | Minimum [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Discount for time since appraisal | 0.00% | 0.00%
Selling costs | 5.00% | 5.00%
Holding period | 0 months | 6 months
Impaired Loans [Member] | Maximum [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Discount for time since appraisal | 100.00% | 100.00%
Selling costs | 11.00% | 9.00%
Holding period | 24 months | 12 months
Impaired Loans [Member] | Weighted Average [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Discount for time since appraisal | 33.77% | 30.83%
Selling costs | 8.47% | 8.35%
Holding period | 11 months 5 days | 11 months
Other Real Estate Owned [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Fair Value | $ 844 | $ 1,024
Valuation Technique(s) | Appraised Collateral Values | Appraised Collateral Values
Other Real Estate Owned [Member] | Minimum [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Discount for time since appraisal | 17.00% | 15.00%
Other Real Estate Owned [Member] | Maximum [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Discount for time since appraisal | 35.00% | 65.00%
Other Real Estate Owned [Member] | Weighted Average [Member] |  |
Fair Value Inputs, Assets, Quantitative Information [Line Items] |  |
Discount for time since appraisal | 24.57% | 26.26%

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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 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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