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Summary of Significant Accounting Policies - Property Plant and Equipment (Details) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2020
Sep. 30, 2019
Sep. 30, 2020
Sep. 30, 2019
Property, Plant and Equipment        
Loss on disposal of property and equipment $ 0 $ 0 $ 0 $ 43,000
Impairment of property, plant and equipment $ 0 $ 0 $ 0 $ 0
Office equipment        
Property, Plant and Equipment        
Property, plant and equipment (useful life)     3 years  
Lab equipment | Minimum        
Property, Plant and Equipment        
Property, plant and equipment (useful life)     5 years  
Lab equipment | Maximum        
Property, Plant and Equipment        
Property, plant and equipment (useful life)     10 years  
Furniture and fixtures        
Property, Plant and Equipment        
Property, plant and equipment (useful life)     5 years