Fair Value Measurements (Details 3) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016
Other real estate owned	$ 1,394	$ 2,694
Total assets measured at fair value on a nonrecurring basis	21,596	22,894
Commercial Real Estate - Owner Occupied Portfolio Segment [Member]
Impaired loans	5,885	2,133
Real Estate Mortgage - Residential Portfolio Segment [Member]
Impaired loans	301	555
Home Equity Portfolio Segment [Member]
Impaired loans	504
Other Consumer Portfolio Segment [Member]
Impaired loans	11	13
Commercial Real Estate - Income Producing Portfolio Segment [Member]
Impaired loans	8,714	12,993
Construction Portfolio Segment [Member]
Impaired loans	2,030	1,550
Commercial Portfolio Segment [Member]
Impaired loans	2,757	2,956
Fair Value, Inputs, Level 3 [Member]
Other real estate owned	1,394	2,694
Total assets measured at fair value on a nonrecurring basis	21,596	22,894
Fair Value, Inputs, Level 3 [Member] | Commercial Real Estate - Owner Occupied Portfolio Segment [Member]
Impaired loans	5,885	2,133
Fair Value, Inputs, Level 3 [Member] | Real Estate Mortgage - Residential Portfolio Segment [Member]
Impaired loans	301	555
Fair Value, Inputs, Level 3 [Member] | Home Equity Portfolio Segment [Member]
Impaired loans	504
Fair Value, Inputs, Level 3 [Member] | Other Consumer Portfolio Segment [Member]
Impaired loans	11	13
Fair Value, Inputs, Level 3 [Member] | Commercial Real Estate - Income Producing Portfolio Segment [Member]
Impaired loans	8,714	12,993
Fair Value, Inputs, Level 3 [Member] | Construction Portfolio Segment [Member]
Impaired loans	2,030	1,550
Fair Value, Inputs, Level 3 [Member] | Commercial Portfolio Segment [Member]
Impaired loans	$ 2,757	$ 2,956