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Fixed Assets, Net (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2020	Dec. 31, 2019
Property, Plant and Equipment [Line Items]
Fixed assets, gross	$ 80,573	$ 79,447
Less: accumulated depreciation	(23,747)	(19,267)
Property, Plant and Equipment, Net, Total	56,826	60,180
Lab equipment
Property, Plant and Equipment [Line Items]
Fixed assets, gross	$ 10,238	9,634
Estimated Useful Life (years)	7 years
Furniture and fixtures
Property, Plant and Equipment [Line Items]
Fixed assets, gross	$ 5,917	5,908
Estimated Useful Life (years)	7 years
Computer hardware and software
Property, Plant and Equipment [Line Items]
Fixed assets, gross	$ 7,069	6,806
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	154
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	$ 34,988	33,852
Construction in Progress (CIP)
Property, Plant and Equipment [Line Items]
Fixed assets, gross	$ 20,705	$ 21,526

X

- Definition

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

+ References

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Amount before accumulated depreciation, depletion and amortization of physical assets used in the normal conduct of business and not intended for resale. Examples include, but are not limited to, land, buildings, machinery and equipment, office equipment, and furniture and fixtures.

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Useful life of long lived, physical assets used in the normal conduct of business and not intended for resale, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Examples include, but not limited to, land, buildings, machinery and equipment, office equipment, furniture and fixtures, and computer equipment.

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