Fair Value Measurements (Details 3) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Other real estate owned	$ 1,394	$ 1,394
Total assets measured at fair value on a nonrecurring basis	19,558	19,370
Real Estate Mortgage - Residential [Member]
Impaired loans	1,745	775
Owner Occupied - Commercial Real Estate - [Member]
Impaired loans	5,932	5,214
Home Equity [Member]
Impaired loans	494	494
Other Consumer [Member]
Impaired loans	11	11
Income Producing - Commercial Real Estate [Member]
Impaired loans	6,620	7,664
Construction - Commercial And Residencial [Member]
Impaired loans	1,551	1,552
Commercial [Member]
Impaired loans	1,811	2,266
Fair Value, Inputs, Level 3 [Member]
Other real estate owned	1,394	1,394
Total assets measured at fair value on a nonrecurring basis	19,558	19,370
Fair Value, Inputs, Level 3 [Member] | Real Estate Mortgage - Residential [Member]
Impaired loans	1,745	775
Fair Value, Inputs, Level 3 [Member] | Owner Occupied - Commercial Real Estate - [Member]
Impaired loans	2,133	5,214
Fair Value, Inputs, Level 3 [Member] | Home Equity [Member]
Impaired loans	494	494
Fair Value, Inputs, Level 3 [Member] | Other Consumer [Member]
Impaired loans	11	11
Fair Value, Inputs, Level 3 [Member] | Income Producing - Commercial Real Estate [Member]
Impaired loans	6,620	7,664
Fair Value, Inputs, Level 3 [Member] | Construction - Commercial And Residencial [Member]
Impaired loans	1,551	1,552
Fair Value, Inputs, Level 3 [Member] | Commercial [Member]
Impaired loans	$ 1,811	$ 2,266