Recently Issued Accounting Standards - Additional Information - (Detail) - USD ($) $ in Thousands	6 Months Ended
	Aug. 01, 2020	Feb. 02, 2020	Feb. 01, 2020
New Accounting Pronouncements or Change in Accounting Principle
Accumulated deficit	$ (314,042)		$ (409,253)
Retained earnings (accumulated deficit)	(314,042)		(409,253)
Allowance for doubtful accounts	$ 3,000		$ 2,200
ASU 2018-15
New Accounting Pronouncements or Change in Accounting Principle
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]		true
Capitalized implementation costs, service term	3 years
Hosted arrangements, additional renewal period	3 years
ASU 2018-15 | Minimum
New Accounting Pronouncements or Change in Accounting Principle
Hosted arrangements, additional renewal period	1 year
ASU 2016-13
New Accounting Pronouncements or Change in Accounting Principle
Change in Accounting Principle, Accounting Standards Update, Adopted [true false]		true