Net Loss per Share (Tables)

3 Months Ended

Mar. 31, 2020

Earnings Per Share [Abstract]

Summary of Common Stock Equivalents Excluded Used in Computation of Diluted Net Loss Per Share

The following outstanding shares of common stock equivalents were excluded in the computation of diluted net loss per share, because their effect would have been antidilutive for the periods presented:

	Three Months Ended March 31,
	2020		2019
Employee stock purchase plan		24,604		48,776
Warrants to purchase common stock		81,966		168,046
Common stock options issued and outstanding		5,086,247		4,016,565
Early exercised common stock subject to future vesting		21,925		31,914
Total		5,214,742		4,265,301