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Disclosures about Fair Value Measurements and Financial Instruments (Details 1) - USD ($)
$ in Thousands
9 Months Ended 12 Months Ended
Sep. 30, 2018
Dec. 31, 2017
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Impaired loans $ 11 $ 1,760
Fair Value Measurements, Nonrecurring Basis [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Impaired loans 11 851
Other real estate owned 163 18
Fair Value Measurements, Nonrecurring Basis [Member] | Impaired Loans [Member]    
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]    
Impaired loans $ 11 $ 851
Valuation Techniques [1],[2] Appraisal of collateral Appraisal of collateral
Appraisal of Adjustment [3] 0.00% 54.00%
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 $ 163 $ 18
Valuation Techniques [1],[2] Appraisal of collateral Appraisal of collateral
Appraisal of Adjustment [3] 6.00% 29.00%
Liquidation expenses [3] 42.00% 79.00%
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]   21.00%
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] 0.00% 16.00%
Liquidation expenses [3] 21.00% 2.00%
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] 0.00% 75.00%
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] 32.00% 64.00%
Liquidation expenses [3] 195.00% 206.00%
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 11 851
Other real estate owned $ 163 $ 18
[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.