Net Loss Per Share (Tables)

12 Months Ended

Jan. 31, 2018

Earnings Per Share [Abstract]

Summary of Computation of Basic and Diluted Net Loss Per Share

The following table sets forth the computation of basic and diluted net loss per share (in thousands, except per share amounts):

	Year Ended January 31,
	2018						2017						2016
	Class A			Class B			Class A			Class B			Class A			Class B
Numerator:
Net loss	$	(115,847	)	$	(39,113	)	$	(64,771	)	$	(87,016	)	$	(49,448	)	$	(153,500	)
Denominator:
Weighted-average number of shares    outstanding—basic and diluted		100,127			33,805			54,394			73,075			29,540			91,700
Net loss per share—basic and diluted	$	(1.16	)	$	(1.16	)	$	(1.19	)	$	(1.19	)	$	(1.67	)	$	(1.67	)

Summary of Weighted Average Outstanding Shares Excluded from Computation of Diluted Net Loss per Share

The following weighted-average outstanding shares of common stock equivalents were excluded from the computation of diluted net loss per share for the periods presented because the impact of including them would have been antidilutive (in thousands):

	Year Ended January 31,
	2018		2017		2016
Options to purchase common stock		11,971		13,550		16,654
Restricted stock units		13,369		10,121		7,233
Employee stock purchase plan		1,624		2,090		3,944
Repurchasable shares from early-exercised options    and unvested restricted stock		98		324		551
Contingently issuable common stock		3		77		115
		27,065		26,162		28,497