Net Loss Per Share (Tables)

6 Months Ended

Jun. 30, 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 and Six Months Ended June 30,
	2020	2019
Options issued and outstanding and ESPP shares issuable	14,351,795	12,214,029
Restricted shares subject to future vesting	1,673,052	610,003
Early exercised common stock subject to future vesting	—	41,672
Total	16,024,847	12,865,704