Summary of Significant Accounting Policies - Summary of Estimated Useful Lives of Property and Equipment (Details)	12 Months Ended
	Dec. 31, 2016
Manufacturing Equipment
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful lives	7 years
Lab Equipment
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful lives	5 years
Furniture and Office Equipment
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful lives	5 years
Computer Equipment
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful lives	3 years
Software
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful lives	3 years
Leasehold Improvements
Property Plant And Equipment [Line Items]
Property and equipment, estimated useful lives	Shorter of remaining lease term or estimated useful life