Contract Balances and Contract Costs - Deferred Commissions and Fulfillment Costs (Details) - USD ($)	3 Months Ended
	May 01, 2020	May 03, 2019	Nov. 01, 2019	Aug. 02, 2019
Capitalized Contract Cost [Roll Forward]
Impact of increase in deferred commissions expense on a per share basis (usd per share)	$ 0.01
Deferred commissions
Capitalized Contract Cost [Roll Forward]
Beginning balance	$ 62,785,000	$ 62,895,000
Amount capitalized	1,436,000	3,884,000
Amount recognized	(5,489,000)	(3,914,000)
Ending balance	58,732,000	62,865,000
Deferred commissions amortization period			6 years	7 years
Increase in deferred commissions expense	1,100,000
Impairment losses on deferred commissions and deferred fulfillment costs	0
Deferred fulfillment costs
Capitalized Contract Cost [Roll Forward]
Beginning balance	11,366,000	10,973,000
Amount capitalized	1,460,000	1,570,000
Amount recognized	(1,395,000)	(1,362,000)
Ending balance	$ 11,431,000	11,181,000
Impairment losses on deferred commissions and deferred fulfillment costs		$ 0