Loans and Allowance for Loan Losses (Details 5) - USD ($) $ in Thousands	Dec. 31, 2016	Dec. 31, 2015
Summary of credit quality indicators by internally assigned grade
Total loans	$ 419,768	$ 394,254
Commercial
Summary of credit quality indicators by internally assigned grade
Total loans	96,281	84,613
Commercial | Pass
Summary of credit quality indicators by internally assigned grade
Total loans	80,644	77,095
Commercial | Special Mention
Summary of credit quality indicators by internally assigned grade
Total loans	12,836	4,216
Commercial | Substandard
Summary of credit quality indicators by internally assigned grade
Total loans	2,801	3,302
Commercial real estate
Summary of credit quality indicators by internally assigned grade
Total loans	238,692	237,137
Commercial real estate | Pass
Summary of credit quality indicators by internally assigned grade
Total loans	208,337	219,958
Commercial real estate | Special Mention
Summary of credit quality indicators by internally assigned grade
Total loans	22,633	7,707
Commercial real estate | Substandard
Summary of credit quality indicators by internally assigned grade
Total loans	$ 7,722	$ 9,472