Amount of loss from the write-down of an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

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Name:	us-gaap_GoodwillImpairmentLoss
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	duration

Segment Reporting - Balance Sheet Metrics as Required Under ASC 280 Footnotes (Detail) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended	12 Months Ended			15 Months Ended	51 Months Ended
	May 02, 2020	Aug. 01, 2020	Feb. 01, 2020	Feb. 02, 2019	Feb. 03, 2018	May 02, 2020	Aug. 01, 2020
Segment Reporting Information
Goodwill impairment			$ 51,100	$ 51,100
Tradename impairment charge		$ 20,459				$ 35,100	$ 35,100
Waterworks
Segment Reporting Information
Goodwill impairment				17,400	$ 33,700
Tradename impairment charge	$ 20,500	$ 20,459		$ 14,600