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Fair Value (Details 3) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Fair value measurements for financial instruments
Recorded Investment	$ 5,536	$ 7,338	$ 10,082
Fair Value, Measurements, Nonrecurring | Residential Real Estate
Fair value measurements for financial instruments
Recorded Investment	740	77
Fair Value, Measurements, Nonrecurring | Consumer
Fair value measurements for financial instruments
Recorded Investment	2	2
Fair Value, Measurements, Nonrecurring | Sales Comparison Valuation | Residential Real Estate
Fair value measurements for financial instruments
Recorded Investment	$ 740	$ 77
Fair Value Measurements Valuation Technique(s) Description	Sales comparison	Sales comparison
Fair Value, Measurements, Nonrecurring | Sales Comparison Valuation | Residential Real Estate | Minimum
Fair value measurements for financial instruments
Adjustment for differences between earning multiplier and comparable sales, Percent	(15.76%)	(12.97%)
Fair Value, Measurements, Nonrecurring | Sales Comparison Valuation | Residential Real Estate | Maximum
Fair value measurements for financial instruments
Adjustment for differences between earning multiplier and comparable sales, Percent	27.92%	14.22%
Fair Value, Measurements, Nonrecurring | Sales Comparison Valuation | Residential Real Estate | Weighted Average
Fair value measurements for financial instruments
Adjustment for differences between earning multiplier and comparable sales, Percent	0.53%	(3.38%)
Fair Value, Measurements, Nonrecurring | Sales Comparison Valuation | Consumer
Fair value measurements for financial instruments
Recorded Investment	$ 2	$ 2
Fair Value Measurements Valuation Technique(s) Description	Sales comparison	Sales comparison
Fair Value, Measurements, Nonrecurring | Sales Comparison Valuation | Consumer | Minimum
Fair value measurements for financial instruments
Adjustment for differences between earning multiplier and comparable sales, Percent	(21.98%)	(20.00%)
Fair Value, Measurements, Nonrecurring | Sales Comparison Valuation | Consumer | Maximum
Fair value measurements for financial instruments
Adjustment for differences between earning multiplier and comparable sales, Percent	21.98%	20.00%
Fair Value, Measurements, Nonrecurring | Sales Comparison Valuation | Consumer | Weighted Average
Fair value measurements for financial instruments
Adjustment for differences between earning multiplier and comparable sales, Percent	0.00%	0.00%
Fair Value, Measurements, Nonrecurring | Sales Comparison Valuation | Commercial real estate
Fair value measurements for financial instruments
Recorded Investment		$ 23
Fair Value Measurements Valuation Technique(s) Description		Sales comparison
Fair Value, Measurements, Nonrecurring | Sales Comparison Valuation | Commercial real estate | Weighted Average
Fair value measurements for financial instruments
Adjustment for differences between earning multiplier and comparable sales, Percent		(24.02%)
Fair Value, Measurements, Nonrecurring | Sales Comparison Valuation | Other Real Estate Owned Residential
Fair value measurements for financial instruments
Recorded Investment		$ 16
Fair Value Measurements Valuation Technique(s) Description		Sales comparison
Fair Value, Measurements, Nonrecurring | Sales Comparison Valuation | Other Real Estate Owned Residential | Minimum
Fair value measurements for financial instruments
Adjustment for differences between earning multiplier and comparable sales, Percent		(10.36%)
Fair Value, Measurements, Nonrecurring | Sales Comparison Valuation | Other Real Estate Owned Residential | Maximum
Fair value measurements for financial instruments
Adjustment for differences between earning multiplier and comparable sales, Percent		17.10%
Fair Value, Measurements, Nonrecurring | Sales Comparison Valuation | Other Real Estate Owned Residential | Weighted Average
Fair value measurements for financial instruments
Adjustment for differences between earning multiplier and comparable sales, Percent		(1.90%)
Fair Value, Measurements, Nonrecurring | Quoted price for loan relationship | Commercial real estate
Fair value measurements for financial instruments
Recorded Investment		$ 339
Fair Value Measurements Valuation Technique(s) Description		Quoted price for loan relationship
Fair Value, Measurements, Nonrecurring | Quoted price for loan relationship | Commercial real estate | Weighted Average
Fair value measurements for financial instruments
Adjustment for differences between earning multiplier and comparable sales, Percent		35.77%
Fair Value, Measurements, Nonrecurring | Quoted price for loan relationship | Commercial
Fair value measurements for financial instruments
Recorded Investment		$ 113
Fair Value Measurements Valuation Technique(s) Description		Quoted price for loan relationship
Fair Value, Measurements, Nonrecurring | Quoted price for loan relationship | Commercial | Weighted Average
Fair value measurements for financial instruments
Adjustment for differences between earning multiplier and comparable sales, Percent		34.98%

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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

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
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Description of the inputs and valuation technique(s) used to measure fair value.

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Amount of investment of impaired financing receivables with related allowance for credit losses and without a related allowance for credit losses.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 310
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-Section 50
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