Net Loss per Share (Tables)

9 Months Ended

Sep. 30, 2020

Earnings Per Share [Abstract]

Anti-Dilutive Securities Excluded from Calculation of Diluted Net Loss Per Share

Since the Company was in a loss position for all periods presented, diluted net loss per common share is the same as basic net loss per common share for all periods presented, because the inclusion of all potential common shares outstanding would have an anti-dilutive effect. The following weighted-average common stock equivalents were excluded from the calculation of diluted net loss per share for the periods presented, because including them would have an anti-dilutive effect:

	Three Months Ended September 30,				Nine Months Ended September 30,
	2020		2019		2020		2019
Options to purchase common stock		8,859,188		11,350,034		9,341,730		10,613,157
Common stock warrants		3,585,264		3,866,555		3,604,364		4,200,541
Restricted stock units		2,207,144		437,933		5,275,149		1,206,267
Total		14,651,596		15,654,522		18,221,243		16,019,965