Annual report pursuant to Section 13 and 15(d)

Nature of business and summary of significant accounting policies, Recently issued accounting pronouncements (Details)

v3.20.1
Nature of business and summary of significant accounting policies, Recently issued accounting pronouncements (Details) - USD ($)
$ in Thousands
Dec. 31, 2019
Dec. 31, 2018
Adoption of FASB ASC Topic 842 "Leases" [Abstract]    
Right-of-use asset $ 951 $ 0
Lease liability $ 986  
ASU 842 [Member]    
Adoption of FASB ASC Topic 842 "Leases" [Abstract]    
Right-of-use asset   421
Lease liability   $ 429