Summary of Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2019

Accounting Policies [Abstract]

Summary of the outstanding securities not included in the computation of diluted net loss per common share as their inclusion would be anti-dilutive

	As of December 31,
	2019		2018		2017
Common stock options		1,461,987		1,132,618		976,777
Unvested restricted common stock		—		52,063		104,127
Preferred stock		1,969,797		1,969,797		1,969,797