Annual report pursuant to Section 13 and 15(d)

Summary of Significant Accounting Policies - Property and equipment (Details)

v3.20.1
Summary of Significant Accounting Policies - Property and equipment (Details) - $ / shares
12 Months Ended
Dec. 31, 2019
Dec. 31, 2018
Potentially dilutive shares outstanding (in shares) 2,633,043 879,544
Exercise price (in dollars per share) $ 2.4763  
Pre Funded Warrant    
Dilutive shares outstanding (in shares) 868,443  
Exercise price (in dollars per share) $ 0.001  
Machinery and equipment    
Estimated useful lives (in years) 5 years  
Furniture, fixtures and IT equipment | Maximum [Member]    
Estimated useful lives (in years) 5 years  
Furniture, fixtures and IT equipment | Minimum [Member]    
Estimated useful lives (in years) 3 years  
Leasehold improvements    
Property, Plant and Equipment, Estimated Useful Lives Shorter of lease term or useful life