Segment Reporting - Summary of Balance Sheet Metrics as Required Under ASC 280 - Segment Reporting (Parenthetical) (Detail) - Waterworks [Member] - USD ($)	3 Months Ended	12 Months Ended	24 Months Ended
Feb. 02, 2019	Feb. 03, 2018	Feb. 02, 2019	Feb. 03, 2018	Feb. 02, 2019
Segment Reporting Information [Line Items]
Impairment charge to goodwill	$ 17,400,000	$ 33,700,000	$ 17,445,000	$ 33,700,000	$ 51,100,000
Tradename impairment charge			$ 14,641,000	$ 0

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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