Loans and Allowance for Loan Losses (Details) - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Composition of the loan portfolio
Total loans	$ 482,313	$ 514,392
Commercial
Composition of the loan portfolio
Total loans	$ 71,462	$ 112,440
Percentage of loans	14.80%	21.90%
Commercial real estate
Composition of the loan portfolio
Total loans	$ 313,229	$ 303,804
Percentage of loans	65.00%	59.00%
Residential real estate
Composition of the loan portfolio
Total loans	$ 69,650	$ 69,845
Percentage of loans	14.40%	13.60%
Consumer | Home equity
Composition of the loan portfolio
Total loans	$ 24,761	$ 25,076
Percentage of loans	5.10%	4.90%
Consumer | Other
Composition of the loan portfolio
Total loans	$ 3,211	$ 3,227
Percentage of loans	0.70%	0.60%