Contract Balances and Contract Costs - Deferred Commissions and Fulfillment Costs (Details) - USD ($)	3 Months Ended		9 Months Ended
	Oct. 30, 2020	Nov. 01, 2019	Oct. 30, 2020	Nov. 01, 2019	Jan. 31, 2020
Capitalized Contract Cost [Roll Forward]
Impact of increase in deferred commissions expense on a per share basis (usd per share)			$ 0.03
Deferred commissions
Capitalized Contract Cost [Roll Forward]
Beginning balance			$ 62,785,000	$ 62,895,000
Amount capitalized			11,369,000	11,113,000
Amount recognized			(16,040,000)	(13,823,000)
Ending balance	$ 58,114,000	$ 60,185,000	$ 58,114,000	60,185,000
Deferred commissions amortization period	7 years		7 years		6 years
Increase in deferred commissions expense			$ 3,000,000.0
Impairment losses on deferred commissions and deferred fulfillment costs	$ 0	0	0	0
Deferred fulfillment costs
Capitalized Contract Cost [Roll Forward]
Beginning balance			11,366,000	10,973,000
Amount capitalized			4,163,000	4,520,000
Amount recognized			(4,312,000)	(4,115,000)
Ending balance	$ 11,217,000	$ 11,378,000	$ 11,217,000	$ 11,378,000