Basis of Presentation and Summary of Significant Accounting Policies - Antidilutive Shares Excluded From Computation of Net Loss Per Share (Details) - shares	6 Months Ended
	Jun. 30, 2020	Jun. 30, 2019
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Securites excluded from computation of net loss per common share	12,337,373	9,850,201
Stock options
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Securites excluded from computation of net loss per common share	8,385,831	7,983,370
Restricted stock units
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Securites excluded from computation of net loss per common share	1,274,354	0
Common stock warrants
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Securites excluded from computation of net loss per common share	2,677,188	1,866,831