Summary of Significant Accounting Policies (Table)

6 Months Ended

Jun. 30, 2020

Accounting Policies [Abstract]

Schedule of Potentially Dilutive Securities not Included in Calculation of Diluted Net Loss Per Share

Potentially dilutive securities not included in the calculation of diluted net loss per share because to do so would be anti-dilutive are shown below in common stock equivalent shares (in thousands):

	June 30,
	2020		2019
Common stock options		3,990		3,040
Unvested common stock subject to repurchase		23		50
		4,013		3,090