CONDENSED CONSOLIDATED STATEMENTS OF CONVERTIBLE PREFERRED STOCK AND STOCKHOLDERS' (DEFICIT) EQUITY (Unaudited) - USD ($) shares in Thousands, $ in Thousands	Total	Cumulative Effect, Period of Adoption, Adjustment	Series A Convertible Preferred Stock	Class A Common Stock	Additional Paid-In Capital	Additional Paid-In Capital Cumulative Effect, Period of Adoption, Adjustment	Treasury Stock	Accumulated Other Comprehensive (Loss) Income	Accumulated Deficit	Accumulated Deficit Cumulative Effect, Period of Adoption, Adjustment
Balance at Jan. 31, 2020	$ 22,357			$ 15	$ 1,302,072		$ (1,177)	$ (307)	$ (1,278,246)
Balance, Beginning, Shares at Jan. 31, 2020				150,611
Issuance of common stock under employee equity plans, net of shares withheld for employee payroll taxes	(9,750)			$ 1	(9,751)
Issuance of common stock under employee equity plans, net of shares withheld for employee payroll taxes, (in shares)				8,032
Stock-based compensation related to stock awards	114,435				114,435
Other comprehensive income (loss)	(990)							(990)
Net loss	(38,490)								(38,490)
Balance at Oct. 31, 2020	87,562			$ 16	1,406,756		(1,177)	(1,297)	(1,316,736)
Balance, Ending, Shares at Oct. 31, 2020				158,643
Balance at Jul. 31, 2020	59,592			$ 16	1,373,580		(1,177)	(1,375)	(1,311,452)
Balance, Beginning, Shares at Jul. 31, 2020				156,399
Issuance of common stock under employee equity plans, net of shares withheld for employee payroll taxes	(2,726)				(2,726)
Issuance of common stock under employee equity plans, net of shares withheld for employee payroll taxes, (in shares)				2,244
Stock-based compensation related to stock awards	35,902				35,902
Other comprehensive income (loss)	78							78
Net loss	(5,284)								(5,284)
Balance at Oct. 31, 2020	87,562			$ 16	1,406,756		(1,177)	(1,297)	(1,316,736)
Balance, Ending, Shares at Oct. 31, 2020				158,643
Balance at Jan. 31, 2021	151,065			$ 16	1,474,843		(1,177)	(938)	(1,321,679)
Balance (ASU 2020-06) at Jan. 31, 2021		$ (68,017)				$ (68,576)				$ 559
Balance, Beginning, Shares at Jan. 31, 2021				159,851
Stock consideration in connection with fiscal 2022 acquisition	10,000				10,000
Issuance of common stock under employee equity plans, net of shares withheld for employee payroll taxes	(19,936)			$ 1	(19,937)
Issuance of common stock under employee equity plans, net of shares withheld for employee payroll taxes, (in shares)				6,246
Stock-based compensation related to stock awards	129,316				129,316
Series A convertible preferred stock, net of issuance costs			$ 485,080
Series A convertible preferred stock, net of issuance costs (in shares)			500
Dividend on series A convertible preferred stock	(7,104)		$ 7,104		(7,104)
Accretion of series A convertible preferred stock	(982)		$ 982		(982)
Repurchases of common stock	(428,382)			$ (2)	(428,380)
Repurchases of common stock (in shares)				(17,087)
Other comprehensive income (loss)	(1,976)							(1,976)
Net loss	(37,134)								(37,134)
Balance at Oct. 31, 2021	$ (273,150)			$ 15	1,089,180		(1,177)	(2,914)	(1,358,254)
Temporary equity, Ending, Shares at Oct. 31, 2021	500		500
Temporary equity, Balance at Oct. 31, 2021	$ 493,166		$ 493,166
Balance, Ending, Shares at Oct. 31, 2021				149,010
Balance at Jul. 31, 2021	(152,987)			$ 15	1,194,180		(1,177)	(1,612)	(1,344,393)
Temporary equity, Beginning, Shares at Jul. 31, 2021			500
Temporary equity, Balance at Jul. 31, 2021			$ 488,894
Balance, Beginning, Shares at Jul. 31, 2021				152,660
Issuance of common stock under employee equity plans, net of shares withheld for employee payroll taxes	(3,147)			$ 1	(3,148)
Issuance of common stock under employee equity plans, net of shares withheld for employee payroll taxes, (in shares)				2,057
Stock-based compensation related to stock awards	40,827				40,827
Series A convertible preferred stock, net of issuance costs			29
Dividend on series A convertible preferred stock	(3,775)		3,775		(3,775)
Accretion of series A convertible preferred stock	(526)		$ 526		(526)
Repurchases of common stock	(138,379)			$ (1)	138,378
Repurchases of common stock (in shares)				(5,707)
Other comprehensive income (loss)	(1,302)							(1,302)
Net loss	(13,861)								(13,861)
Balance at Oct. 31, 2021	$ (273,150)			$ 15	$ 1,089,180		$ (1,177)	$ (2,914)	$ (1,358,254)
Temporary equity, Ending, Shares at Oct. 31, 2021	500		500
Temporary equity, Balance at Oct. 31, 2021	$ 493,166		$ 493,166
Balance, Ending, Shares at Oct. 31, 2021				149,010