Segment Reporting - Summary of Statements of Operations Metrics Reviewed by CODM to Evaluate Performance Internally (Detail) - USD ($) $ in Thousands	3 Months Ended	9 Months Ended
Oct. 28, 2017	Oct. 29, 2016	Oct. 28, 2017	Oct. 29, 2016
Segment Reporting Information [Line Items]
Net revenues	$ 592,473	$ 549,328	$ 1,769,879	$ 1,548,165
Gross profit	214,325	175,819	590,394	483,133
Depreciation and amortization	18,546	15,036	51,092	41,248
RH Segment [Member]
Segment Reporting Information [Line Items]
Net revenues	563,174	521,027	1,680,495	1,499,101
Gross profit	203,221	166,124	555,844	467,402
Depreciation and amortization	17,474	13,966	47,761	39,484
Waterworks [Member]
Segment Reporting Information [Line Items]
Net revenues	29,299	28,301	89,384	49,064
Gross profit	11,104	9,695	34,550	15,731
Depreciation and amortization	$ 1,072	$ 1,070	$ 3,331	$ 1,764

The current period expense charged against earnings on long-lived, physical assets not used in production, and which are not intended for resale, to allocate or recognize the cost of such assets over their useful lives; or to record the reduction in book value of an intangible asset over the benefit period of such asset; or to reflect consumption during the period of an asset that is not used in production.

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 360
-SubTopic 10
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=6391035&loc=d3e2868-110229

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (b)
-URI http://asc.fasb.org/extlink&oid=66902209&loc=d3e3602-108585

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Aggregate revenue less cost of goods and services sold or operating expenses directly attributable to the revenue generation activity.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1,2)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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Total revenue from sale of goods and services rendered during the reporting period, in the normal course of business, reduced by sales returns and allowances, and sales discounts.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 225
-SubTopic 10
-Section S99
-Paragraph 2
-Subparagraph (SX 210.5-03.1)
-URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688

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No definition available.

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