Net Loss Per Share Attributable to Common Stockholders (Tables)

12 Months Ended

Dec. 31, 2019

Earnings Per Share [Abstract]

Schedule of Net Loss Per Share, Basic and Diluted

The following table sets forth the computation of basic and diluted net loss per share attributable to our common stockholders:

	Year Ended December 31,
	2019			2018			2017
	(in thousands, except per share data)
Net loss	$	(55,270	)	$	(33,382	)	$	(16,858	)
Accretion of redeemable convertible preferred stock	(96		)	(162		)	(143		)
Net loss attributable to common stockholders	$	(55,366	)	$	(33,544	)	$	(17,001	)
Weighted-average shares used in computing net loss per share attributable to common stockholders, basic and diluted	50,930			16,573			14,442
Net loss per share attributable to common stockholders, basic and diluted	$	(1.09	)	$	(2.02	)	$	(1.18	)

Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share

The following potential outstanding shares of common stock were excluded from the computation of diluted net loss per share attributable to common stockholders for the periods presented because including them would have been antidilutive:

	Year Ended December 31,
	2019	2018	2017
	(in thousands)
Redeemable convertible preferred stock	—	58,615	45,960
Stock options	14,020	17,571	15,628
Restricted stock awards subject to repurchase	736	—	1,127
Common stock warrants	695	785	785
Unvested restricted stock units, Performance RSUs and PSUs	4,708	—	—
ESPP obligations	77	—	—
Total anti-dilutive shares	20,236	76,971	63,500