Contract Balances and Contract Costs - Deferred Revenue (Details) - USD ($) $ in Thousands	6 Months Ended
	Jul. 31, 2020	Aug. 02, 2019
Change in Contract with Customer, Liability [Roll Forward]
Deferred revenue, Beginning of period	$ 188,537	$ 173,929
Deferred revenue, Upfront payments received and billings	165,081	158,769
Deferred revenue, Revenue recognized	(167,341)	(151,495)
Deferred revenue, End of period	$ 186,277	$ 181,203