Loans and Allowance for Loan Losses (Details 5) - USD ($) $ in Thousands	Mar. 31, 2017	Dec. 31, 2016
Summary of credit quality indicators by internally assigned grade
Total loans	$ 397,087	$ 419,768
Commercial
Summary of credit quality indicators by internally assigned grade
Total loans	64,555	96,281
Commercial | Pass
Summary of credit quality indicators by internally assigned grade
Total loans	45,817	80,644
Commercial | Special Mention
Summary of credit quality indicators by internally assigned grade
Total loans	15,366	12,836
Commercial | Substandard
Summary of credit quality indicators by internally assigned grade
Total loans	3,372	2,801
Commercial real estate
Summary of credit quality indicators by internally assigned grade
Total loans	245,875	238,692
Commercial real estate | Pass
Summary of credit quality indicators by internally assigned grade
Total loans	210,455	208,337
Commercial real estate | Special Mention
Summary of credit quality indicators by internally assigned grade
Total loans	28,370	22,633
Commercial real estate | Substandard
Summary of credit quality indicators by internally assigned grade
Total loans	$ 7,050	$ 7,722