Annual report pursuant to Section 13 and 15(d)

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

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Summary of Significant Accounting Policies - Property, plant and equipment (Details)
12 Months Ended
Dec. 31, 2018
Computer equipment | Minimum  
Property, plant and equipment  
Estimated useful lives (in years) 3 years
Computer equipment | Maximum  
Property, plant and equipment  
Estimated useful lives (in years) 5 years
Laboratory equipment  
Property, plant and equipment  
Estimated useful lives (in years) 5 years
Office equipment  
Property, plant and equipment  
Estimated useful lives (in years) 5 years