Summary of Significant Accounting Policies - Summary of Useful Lives of Property and Equipment (Details)	12 Months Ended
	Dec. 31, 2015
Research and Development
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Furniture and Office Equipment
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Useful Life	5 years
Computer Equipment
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Software
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Useful Life	3 years
Leasehold Improvements
Property Plant And Equipment [Line Items]
Property, Plant and Equipment, Useful Life	Shorter of remaining lease term or estimated useful life