Net Loss Per Share (Tables)

3 Months Ended

Mar. 31, 2020

Earnings Per Share [Abstract]

Schedule of Dilutive Securities Not Included in Diluted Per Share Calculations

Potentially dilutive securities that were not included in the diluted per share calculations because they would be anti-dilutive were as follows:

	Three Months Ended March 31,
	2020	2019
Options issued and outstanding and ESPP shares issuable	14,530,378	12,202,568
Restricted shares subject to future vesting	1,637,984	524,359
Early exercised common stock subject to future vesting	—	88,550
Total	16,168,362	12,815,477