Summary of Significant Accounting Policies - Fixed Assets, Net (Details)	12 Months Ended
Dec. 31, 2018
Computer equipment \| Minimum
Fixed Assets, Net
Estimated useful live of fixed assets	3 years
Computer equipment \| Maximum
Fixed Assets, Net
Estimated useful live of fixed assets	5 years
Laboratory equipment, office equipment, manufacturing equipment and furniture and fixtures
Fixed Assets, Net
Estimated useful live of fixed assets	7 years

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.

No definition available.

Name:	us-gaap_PropertyPlantAndEquipmentUsefulLife
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration