Credit Facilities - Additional Information (Detail) - USD ($)				3 Months Ended	9 Months Ended
	Oct. 10, 2017	Jul. 07, 2017	Jun. 28, 2017	Oct. 28, 2017	Oct. 28, 2017	Jan. 28, 2017
Line Of Credit Facility [Line Items]
Amounts outstanding under credit facilities				$ 421,000,000	$ 421,000,000
Deferred financing fees				4,698,000	$ 4,698,000	$ 1,530,000
Revolving line of credit, interest rate description					Borrowings under the revolving line of credit and LILO term loan facility are subject to interest, at the borrowers’ option, at either the bank’s reference rate or LIBOR (or, in the case of the revolving line of credit, the Bank of America “BA” Rate or the Canadian Prime Rate, as such terms are defined in the credit agreement, for Canadian borrowings denominated in Canadian dollars or the United States Index Rate or LIBOR for Canadian borrowings denominated in United States dollars) plus an applicable margin rate, in each case.
Outstanding revolving line of credit				420,471,000	$ 420,471,000
Fixed charge coverage ratio covenant, percentage of borrowing base					10.00%
Incremental borrowing available after maintaining fixed charge coverage ratio				125,200,000	$ 125,200,000
Loss on extinguishment of debt				(4,880,000)	$ (4,880,000)
Credit Agreement [Member]
Line Of Credit Facility [Line Items]
Agreement, date					Jun. 28, 2017
Unamortized deferred financing fees written off / expensed					$ 100,000
Credit Agreement [Member] | Other Non-current Assets [Member]
Line Of Credit Facility [Line Items]
Deferred financing fees				3,900,000	3,900,000
Credit Facilities [Member]
Line Of Credit Facility [Line Items]
Amounts outstanding under credit facilities						$ 0
Revolving Credit Facility [Member]
Line Of Credit Facility [Line Items]
Availability under the revolving line of credit				189,000,000	189,000,000
Unamortized deferred financing fees				1,100,000	1,100,000
Outstanding revolving line of credit				341,000,000	341,000,000
Outstanding letters of credit				27,700,000	$ 27,700,000
Revolving Credit Facility [Member] | Credit Agreement [Member]
Line Of Credit Facility [Line Items]
Amended and restated credit agreement maturity date					Jun. 28, 2022
Revolving Credit Facility [Member] | Credit Agreement [Member] | Maximum [Member]
Line Of Credit Facility [Line Items]
Availability under the revolving line of credit			$ 600,000,000
Revolving Credit Facility [Member] | Credit Agreement [Member] | Minimum [Member]
Line Of Credit Facility [Line Items]
Line of credit			600,000,000
Revolving Credit Facility [Member] | Credit Agreement [Member] | Scenario, Plan Subject to Satisfaction of Conditions [Member]
Line Of Credit Facility [Line Items]
Increase in revolving line of credit			200,000,000
Revolving Credit Facility [Member] | Credit Agreement [Member] | Scenario, Plan Subject to Satisfaction of Conditions [Member] | Maximum [Member]
Line Of Credit Facility [Line Items]
Line of credit			800,000,000
Revolving Credit Facility [Member] | Credit Agreement [Member] | Restoration Hardware Canada, Inc. [Member]
Line Of Credit Facility [Line Items]
Availability under the revolving line of credit			10,000,000
LILO Term Loan Facility [Member]
Line Of Credit Facility [Line Items]
Amounts outstanding under credit facilities				80,000,000	$ 80,000,000
Debt issuance costs				600,000	600,000
Outstanding revolving line of credit				$ 79,471,000	$ 79,471,000
LILO Term Loan Facility [Member] | Credit Agreement [Member] | Maximum [Member]
Line Of Credit Facility [Line Items]
Line of credit facility, maximum borrowing capacity			$ 80,000,000
Second Lien Term Loan [Member]
Line Of Credit Facility [Line Items]
Agreement, date					Jul. 07, 2017
Line of credit facility, maximum borrowing capacity		$ 100,000,000
Amended and restated credit agreement maturity date					Jan. 07, 2023
Debt issuance costs		$ 3,600,000
Repayment of term loan	$ 100,000,000
Loss on extinguishment of debt					$ (4,900,000)
Prepayment penalty					3,000,000
Acceleration of amortization of debt issuance costs					$ 1,900,000
Interest rate description					Annual rate generally based on LIBOR plus 8.25%
Variable interest rate description					one month LIBOR plus 8.25%
Debt instrument, basis spread on variable rate		8.25%