Equity Incentive Plans (Tables)

12 Months Ended

Jan. 31, 2021

Share-based Payment Arrangement [Abstract]

Schedule of Recognized Stock-based Compensation Expense

The Company recognized stock-based compensation expense related to its equity incentive plans as follows (in thousands):

	Year Ended January 31,
	2019		2020		2021
Cost of revenue:
Subscription	$	219	$	507	$	1,213
Professional services and other	154		404		843
Sales and marketing	7,387		10,770		10,936
Research and development	6,519		6,339		9,095
General and administrative	7,492		5,637		11,218
Interest expense	30		190		444
Total	$	21,801	$	23,847	$	33,749

Schedule of Weighted-average Assumptions Used in Estimating Grant-date Fair Value of Options

The grant-date fair value of stock options was estimated using the Black-Scholes option pricing model with the following weighted-average assumptions:

	Year Ended January 31,
	2019	2020	2021
Expected stock price volatility	—	47%	—
Expected life of options	—	6 years	—
Risk-free interest rate	—	2.47%	—
Expected dividend yield	—	—	—
Fair value of common stock	—	$31.20	—

Schedule of Outstanding Stock Options and Related Activity

The following table sets forth the outstanding common stock options and related activity for the years ended January 31, 2019, 2020 and 2021:

	Shares Subject to Outstanding Options	Weighted- Average Exercise Price per Share		Weighted-Average Remaining Contractual Term (years)	Aggregate Intrinsic Value (in thousands)
Outstanding as of January 31, 2018	2,465,242	$	21.90	6.4	$	12,185
Exercised	(367,991)	6.09
Forfeited	(101,782)	30.69
Expired	(139,130)	34.06
Outstanding as of January 31, 2019	1,856,339	23.64		5.6	8,443
Granted	25,000	31.20
Exercised	(94,603)	16.99
Forfeited	(11,010)	28.24
Expired	(30,311)	33.64
Outstanding as of January 31, 2020	1,745,415	23.91		4.6	5,152
Exercised	(374,049)	21.64
Forfeited	(2,112)	27.96
Expired	(72,751)	37.53
Outstanding as of January 31, 2021	1,296,503	$	23.79	3.7	$	51,339
Vested and exercisable at January 31, 2021	1,270,728	$	23.64	3.6	$	50,507

Schedule of Outstanding RSUs and Related Activity

The following table sets forth the outstanding RSUs and related activity for the years ended January 31, 2019, 2020 and 2021:

	Number of Shares	Weighted- Average Grant Date Fair Value
Outstanding as of January 31, 2018	1,001,226	$	23.40
Granted	1,743,393	18.06
Vested	(12,625)	27.60
Canceled	(403,872)	21.29
Outstanding as of January 31, 2019	2,328,122	19.77
Granted	1,113,913	28.82
Vested	(982,591)	21.76
Canceled	(282,639)	20.52
Outstanding as of January 31, 2020	2,176,805	23.40
Granted	3,209,165	25.94
Vested	(1,028,734)	21.71
Canceled	(499,075)	23.22
Outstanding as of January 31, 2021	3,858,161	$	25.97

Schedule of Weighted-average Assumptions Used in Determining Grant-date Fair Value of ESPP Purchase Rights

The fair value of the purchase rights for the ESPP are estimated on the date of grant using the Black-Scholes option-pricing model with the following assumptions:

	Year Ended January 31,
	2019	2020	2021
Expected stock price volatility	31% - 36%	43% - 52%	49% - 83%
Expected term	0.75 - 2.25 years	0.5 - 2.0 years	0.5 - 2.0 years
Risk-free interest rate	2.22% - 2.54%	1.56% - 2.46%	.11% - .23%
Expected dividend yield	–	–	–