Net Loss Per Share (Tables)

9 Months Ended

Sep. 30, 2021

Earnings Per Share [Abstract]

Common Stock Equivalents Excluded from Computation of Diluted Net Loss per Share

The following common stock equivalents were excluded from the computation of diluted net loss per share for the periods presented because their effect would have been anti-dilutive:

	Nine Months Ended September 30,
	2021		2020
Options to purchase common stock		494,250		499,033
Series A Preferred		158,545		—
Common stock warrants		58,688		58,688
Unvested restricted stock units		6,301		13,603