CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Oct. 31, 2021	Oct. 31, 2020	Oct. 31, 2021	Oct. 31, 2020
Income Statement [Abstract]
Revenue	$ 224,044	$ 196,003	$ 640,971	$ 571,857
Cost of revenue	63,069	56,812	184,804	166,141
Gross profit	160,975	139,191	456,167	405,716
Operating expenses:
Research and development	55,837	49,454	159,418	152,683
Sales and marketing	76,368	67,112	218,967	207,619
General and administrative	39,857	25,239	105,242	79,778
Total operating expenses	172,062	141,805	483,627	440,080
Loss from operations	(11,087)	(2,614)	(27,460)	(34,364)
Interest and other expense, net	(2,336)	(2,319)	(8,275)	(3,235)
Loss before provision for income taxes	(13,423)	(4,933)	(35,735)	(37,599)
Provision for income taxes	438	351	1,399	891
Net loss	(13,861)	(5,284)	(37,134)	(38,490)
Dividend on series A convertible preferred stock	(3,775)		(7,104)
Accretion of series A convertible preferred stock	(526)		(982)
Net loss attributable to common stockholders	$ (18,162)	$ (5,284)	$ (45,220)	$ (38,490)
Net loss per share attributable to common stockholders, basic and diluted	$ (0.12)	$ (0.03)	$ (0.29)	$ (0.25)
Weighted-average shares used to compute net loss per share attributable to common stockholders, basic and diluted	151,426	157,465	158,068	154,734