Net Loss per Share (Tables)

12 Months Ended

Dec. 31, 2020

Net Loss per Share

Basic and diluted net loss per share

	December 31,
	2020		2019		2018
	(in thousands, except per share data)
Numerator:
Net loss used to compute net loss per share, basic and diluted	$	(229,743)	$	(124,827)	$	(128,154)
Denominator:
Weighted-average number of shares used in computing net loss per share, basic and diluted		81,011		69,555		57,848
Net loss per share, basic and diluted	$	(2.84)	$	(1.79)	$	(2.22)

Total outstanding potentially dilutive shares not included in the calculation of dilutive EPS

	December 31,
	2020	2019	2018
	(in thousands)
Options to purchase common stock	6,707	8,497	9,463
Restricted stock units	4,188	2,404	1,084
Employee stock purchase plan	37	32	42
Convertible Note	7,411	—	—
	18,343	10,933	10,589