Significant Accounting Policies - Summary of Useful Lives Assigned to Property and Equipment (Details)	12 Months Ended
	Dec. 31, 2019
Laboratory Equipment | Minimum
Property Plant And Equipment [Line Items]
Property and equipment, useful lives	3 years
Laboratory Equipment | Maximum
Property Plant And Equipment [Line Items]
Property and equipment, useful lives	7 years
Leasehold Improvements
Property Plant And Equipment [Line Items]
Property and equipment, useful lives	Shorter of estimated useful life or remaining lease term
Computer Equipment and Software
Property Plant And Equipment [Line Items]
Property and equipment, useful lives	3 years
Furniture and Office Equipment | Minimum
Property Plant And Equipment [Line Items]
Property and equipment, useful lives	5 years
Furniture and Office Equipment | Maximum
Property Plant And Equipment [Line Items]
Property and equipment, useful lives	10 years