Contract Balances and Contract Costs - Deferred Commissions and Fulfillment Costs (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jul. 31, 2020	Aug. 02, 2019	Jul. 31, 2020	Aug. 02, 2019	Nov. 01, 2019
Capitalized Contract Cost [Roll Forward]
Impact of increase in deferred commissions expense on a per share basis (usd per share)			$ 0.02
Deferred commissions
Capitalized Contract Cost [Roll Forward]
Beginning balance			$ 62,785,000	$ 62,895,000
Amount capitalized			7,259,000	7,556,000
Amount recognized			(10,834,000)	(7,612,000)
Ending balance	$ 59,210,000	$ 62,839,000	$ 59,210,000	62,839,000
Deferred commissions amortization period	7 years		7 years		6 years
Increase in deferred commissions expense			$ 2,100,000
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			3,005,000	3,017,000
Amount recognized			(2,865,000)	(2,712,000)
Ending balance	$ 11,506,000	$ 11,278,000	$ 11,506,000	$ 11,278,000