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Summary of Significant Accounting Policies - Property and Equipment (Details)
12 Months Ended
Dec. 31, 2020
Property and Equipment, Net  
Lease, Practical Expedients, Package [true false] true
Laboratory equipment | Minimum  
Property and Equipment, Net  
Estimated Useful Life 3 years
Laboratory equipment | Maximum  
Property and Equipment, Net  
Estimated Useful Life 5 years
Computer equipment & software  
Property and Equipment, Net  
Estimated Useful Life 3 years
Furniture & fixtures  
Property and Equipment, Net  
Estimated Useful Life 5 years
Machinery & equipment | Minimum  
Property and Equipment, Net  
Estimated Useful Life 3 years
Machinery & equipment | Maximum  
Property and Equipment, Net  
Estimated Useful Life 5 years