Schedule of Property and Equipment (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2018	Dec. 31, 2017
Property and Equipment
Property and equipment, gross	$ 8,238	$ 8,537
Less accumulated depreciation and amortization	(4,235)	(2,342)
Property and equipment, net	$ 4,003	6,195
Furniture and fixtures, lab and office equipment
Property and Equipment
Estimated useful life (in years)	5 years
Property and equipment, gross	$ 1,262	1,145
Computer equipment and software
Property and Equipment
Estimated useful life (in years)	3 years
Property and equipment, gross	$ 3,445	3,602
Manufacturing equipment
Property and Equipment
Estimated useful life (in years)	10 years
Property and equipment, gross	$ 1,616	1,617
Leasehold improvements
Property and Equipment
Property and equipment, gross	1,915	1,847
Construction in progress
Property and Equipment
Property and equipment, gross	$ 0	$ 326

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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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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