Loans and Allowance for Loan Losses (Details 5) - USD ($) $ in Thousands	Mar. 31, 2020	Dec. 31, 2019
Summary of credit quality indicators by internally assigned grade
Total loans	$ 482,239	$ 518,716
Commercial
Summary of credit quality indicators by internally assigned grade
Total loans	71,969	99,864
Commercial | Pass
Summary of credit quality indicators by internally assigned grade
Total loans	55,642	83,114
Commercial | Special Mention
Summary of credit quality indicators by internally assigned grade
Total loans	6,168	6,273
Commercial | Substandard
Summary of credit quality indicators by internally assigned grade
Total loans	10,159	10,477
Commercial real estate
Summary of credit quality indicators by internally assigned grade
Total loans	299,098	302,084
Commercial real estate | Pass
Summary of credit quality indicators by internally assigned grade
Total loans	274,672	275,763
Commercial real estate | Special Mention
Summary of credit quality indicators by internally assigned grade
Total loans	20,186	21,995
Commercial real estate | Substandard
Summary of credit quality indicators by internally assigned grade
Total loans	$ 4,240	$ 4,326