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Disclosures about Fair Value Measurements and Financial Instruments (Details 1) - USD ($) $ in Thousands | 3 Months Ended | 12 Months Ended
--- | --- | ---
Mar. 31, 2019 | Dec. 31, 2018
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Impaired loans |  | $ 11 | $ 11
Fair Value Measurements, Nonrecurring Basis [Member] |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Impaired loans |  | 0 | 0
Other real estate owned |  | 18 | 157
Fair Value Measurements, Nonrecurring Basis [Member] | Impaired Loans [Member] |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Impaired loans |  | $ 0 | $ 0
Valuation Techniques | [1],[2] | Appraisal of collateral | Appraisal of collateral
Fair Value Measurements, Nonrecurring Basis [Member] | Other Real Estate Owned [Member] |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Other real estate owned |  | $ 18 | $ 157
Appraisal of Adjustment | [3] | (44.00%) | (8.00%)
Liquidation expenses |  | (21.00%) | (40.00%)
Valuation Techniques | [1],[2] | Appraisal of collateral | Appraisal of collateral
Fair Value Measurements, Nonrecurring Basis [Member] | Minimum [Member] |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Liquidation expenses |  | 21.00% | 21.00%
Fair Value Measurements, Nonrecurring Basis [Member] | Minimum [Member] | Impaired Loans [Member] |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Appraisal of Adjustment | [3] | (100.00%) | (100.00%)
Fair Value Measurements, Nonrecurring Basis [Member] | Minimum [Member] | Other Real Estate Owned [Member] |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Appraisal of Adjustment | [3] | 43.00% | 0.00%
Fair Value Measurements, Nonrecurring Basis [Member] | Maximum [Member] |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Liquidation expenses |  | 24.00% | 195.00%
Fair Value Measurements, Nonrecurring Basis [Member] | Maximum [Member] | Impaired Loans [Member] |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Appraisal of Adjustment | [3] | 100.00% | 100.00%
Fair Value Measurements, Nonrecurring Basis [Member] | Maximum [Member] | Other Real Estate Owned [Member] |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Appraisal of Adjustment | [3] | 44.00% | 39.00%
Fair Value Measurements, Nonrecurring Basis [Member] | Level 1 [Member] |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Impaired loans |  | $ 0 | $ 0
Other real estate owned |  | 0 | 0
Fair Value Measurements, Nonrecurring Basis [Member] | Level 2 [Member] |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Impaired loans |  | 0 | 0
Other real estate owned |  | 0 | 0
Fair Value Measurements, Nonrecurring Basis [Member] | Level 3 [Member] |  |  |
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items] |  |  |
Impaired loans |  | 0 | 0
Other real estate owned |  | $ 18 | $ 157
[1] | Fair Value is generally determined through independent appraisals of the underlying collateral, which generally include various level 3 inputs which are not identifiable.
[2] | Includes qualitative adjustments by management and estimated liquidation expenses.
[3] | Appraisals may be adjusted by management for qualitative factors such as economic conditions.

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- Definition Fair value of firm holdings in securities classified as other. Includes pledged and unpledged holdings. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35711157&loc=d3e42546-110969 + Details
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