Net Loss Per Share (Tables)

6 Months Ended

Jun. 30, 2021

Earnings Per Share [Abstract]

Schedule of Outstanding Shares of Common Stock Equivalents Excluded from Calculation of Diluted Net Loss Per Share

The following shares of common stock equivalents were excluded from the calculation of diluted net loss per share for the periods presented because including them would have been antidilutive:

	June 30, 2021		June 30, 2020
Series A warrants for common stock		7,802,241		7,802,241
Series B warrants for common stock		2,524,732		2,574,727
Options to purchase common stock		4,786,469		2,351,055
Warrants for common stock		727,122		727,122
Total potential dilutive shares		15,840,564		13,455,145