Net Loss Per Share (Tables)

12 Months Ended

Dec. 31, 2020

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:

	As of December 31,
	2020		2019		2018
Series A warrants for common stock		7,802,241		7,802,241		—
Series B warrants for common stock		2,574,727		2,574,727		—
Options to purchase common stock		4,146,928		326,023		262,539
Warrants for common stock		727,122		1,839		1,839
Total potential dilutive shares		15,251,018		10,704,830		264,378