Employee Incentive Plans (Tables)

6 Months Ended

Jul. 31, 2017

Disclosure of Compensation Related Costs, Share-based Payments [Abstract]

Schedule of Stock-based Compensation Expense by Award Type

Stock-based compensation expense by award type was as follows (in thousands):

	Three Months Ended July 31,				Six Months Ended July 31,
	2017		2016		2017		2016
Stock options	$	6,127	$	3,664	$	12,152	$	7,033
RSUs	1,435		—		1,501		—
ESPP	2,015		—		2,800		—
Restricted stock awards	768		—		1,520		—
Restricted common stock	1,633		—		2,911		—
Total	$	11,978	$	3,664	$	20,884	$	7,033

Schedule of Stock-based Compensation Expense by Statement of Operations Location

Stock-based compensation expense was recorded in the following cost and expense categories in the Company’s condensed consolidated statements of operations (in thousands):

	Three Months Ended July 31,				Six Months Ended July 31,
	2017		2016		2017		2016
Cost of revenue
Subscription	$	1,056	$	446	$	1,742	$	839
Professional services and other	738		313		1,207		586
Research and development	4,438		736		7,739		1,354
Sales and marketing	3,021		1,412		5,396		2,766
General and administrative	2,725		757		4,800		1,488
Total	$	11,978	$	3,664	$	20,884	$	7,033

Schedule of Stock Option Activity

A summary of the Company’s stock option activity and related information is as follows:

	Number of Options		Weighted- Average Exercise Price		Weighted- Average Remaining Contractual Term (Years)	Aggregate Intrinsic Value (in thousands)
Outstanding as of January 31, 2017	32,866,862		$	6.01	8.2	$	145,570
Granted	2,596,568		11.03
Exercised	(1,285,555	)	3.04
Canceled	(817,636	)	7.55
Outstanding as of July 31, 2017	33,360,239		$	6.48	7.9	$	516,132
As of July 31, 2017
Vested and exercisable	14,864,075		$	4.16	6.8	$	264,429

Schedule of Black-Scholes Option Pricing Model Estimated Fair Value Assumptions

The Company used the Black-Scholes option pricing model to estimate the fair value of stock options granted with the following assumptions:

	Three Months Ended July 31,		Six Months Ended July 31,
	2017	2016	2017	2016
	(unaudited)
Expected volatility	—	42.9%-43.8%	40.3%-40.5%	42.9%-44.3%
Expected term (in years)	—	5.8-6.4	6.0-6.4	5.8-6.4
Risk-free interest rate	—	1.13%-1.50%	2.06%-2.21%	1.13%-1.54%
Expected dividend yield	—	—	—	—

Schedule of ESPP Black-Scholes Option Pricing Model Estimated Fair Value Assumptions

The Company estimated the fair value of ESPP purchase rights using a Black-Scholes option pricing model with the following assumptions:

	Three Months Ended July 31,	Six Months Ended July 31,
	2017	2017
	(unaudited)
Expected volatility	31.8%-34.2%	31.8%-37.4%
Expected term (in years)	0.5-1.0	0.5-1.2
Risk-free interest rate	1.12%-1.22%	0.95%-1.22%
Expected dividend yield	—	—