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Fixed Assets, Net (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Dec. 31, 2020
Property, Plant and Equipment [Line Items]
Fixed assets, gross	$ 86,907	$ 82,303
Less: accumulated depreciation	(33,123)	(28,350)
Property, Plant and Equipment, Net, Total	53,784	53,953
Lab equipment
Property, Plant and Equipment [Line Items]
Fixed assets, gross	$ 11,031	10,352
Estimated Useful Life (years)	7 years
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Fixed assets, gross	$ 5,917	5,917
Estimated Useful Life (years)	7 years
Computer hardware and software
Property, Plant and Equipment [Line Items]
Fixed assets, gross	$ 7,366	7,267
Computer hardware and software | Minimum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (years)	3 years
Computer hardware and software | Maximum
Property, Plant and Equipment [Line Items]
Estimated Useful Life (years)	5 years
Office equipment
Property, Plant and Equipment [Line Items]
Fixed assets, gross	$ 89	88
Estimated Useful Life (years)	7 years
Manufacturing equipment
Property, Plant and Equipment [Line Items]
Fixed assets, gross	$ 1,567	1,567
Estimated Useful Life (years)	7 years
Leasehold improvements
Property, Plant and Equipment [Line Items]
Fixed assets, gross	$ 35,759	35,289
Construction in progress (CIP)
Property, Plant and Equipment [Line Items]
Fixed assets, gross	$ 25,178	$ 21,823

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Amount of accumulated depreciation, depletion and amortization for physical assets used in the normal conduct of business to produce goods and services.

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