Disclosures about Fair Value Measurements (Details 1) - USD ($) $ in Thousands		9 Months Ended	12 Months Ended
		Sep. 30, 2017	Dec. 31, 2016
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired loans		$ 3,923	$ 674
Fair Value Measurements, Nonrecurring Basis [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired loans		3,035	147
Other real estate owned		39	21
Fair Value Measurements, Nonrecurring Basis [Member] | Impaired Loans [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Impaired loans		$ 3,035	$ 147
Valuation Techniques	[1],[2]	Appraisal of collateral	Appraisal of collateral
Appraisal of Adjustment	[3]	42.00%	45.00%
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		$ 39	$ 21
Valuation Techniques	[1],[2]	Appraisal of collateral	Appraisal of collateral
Appraisal of Adjustment	[3]	43.00%	42.00%
Liquidation expenses		64.00%	37.00%
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]	40.00%	40.00%
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%	20.00%
Liquidation expenses		2.00%	3.00%
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]	77.00%	99.00%
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]	45.00%	77.00%
Liquidation expenses		206.00%	199.00%
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		3,035	147
Other real estate owned		$ 39	$ 21

[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.