Deferred Revenue and Commissions - Deferred Commissions (Details) - USD ($)	3 Months Ended		9 Months Ended
	Oct. 31, 2021	Nov. 01, 2020	Oct. 31, 2021	Nov. 01, 2020
Deferred Commissions [Roll Forward]
Beginning balance	$ 195,965,000	$ 144,687,000	$ 187,924,000	$ 139,204,000
Additions	49,822,000	36,234,000	121,802,000	96,530,000
Recognition of deferred commissions	(37,467,000)	(28,832,000)	(101,406,000)	(83,645,000)
Ending balance	$ 208,320,000	152,089,000	$ 208,320,000	152,089,000
Commission expected to be recognized over the next 12 months (percent)	30.00%		30.00%
Impairment of capitalized commissions	$ 0	$ 0	$ 0	$ 0