Loans and Allowance for Loan Losses (Details) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Composition of the loan portfolio
Total loans	$ 395,763	$ 394,254
Commercial
Composition of the loan portfolio
Total loans	$ 61,351	$ 84,613
Percentage of loans	15.50%	21.50%
Commercial real estate
Composition of the loan portfolio
Total loans	$ 251,149	$ 237,137
Percentage of loans	63.50%	60.10%
Residential real estate
Composition of the loan portfolio
Total loans	$ 56,229	$ 45,414
Percentage of loans	14.20%	11.50%
Consumer | Home equity
Composition of the loan portfolio
Total loans	$ 24,095	$ 23,334
Percentage of loans	6.10%	5.90%
Consumer | Other
Composition of the loan portfolio
Total loans	$ 2,939	$ 3,756
Percentage of loans	0.70%	1.00%