Net Loss Per Share (Tables)

6 Months Ended

Jun. 30, 2019

Earnings Per Share [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 as follows in common stock equivalent shares (in thousands):

	June 30,
	2019		2018
Convertible preferred stock outstanding		—		14,713
Common stock options		3,040		2,275
Unvested common stock subject to repurchase		50		139
		3,090		17,127