Debt - Credit Facility - Additional Information (Detail) - USD ($)			3 Months Ended			6 Months Ended
	Nov. 02, 2013	Dec. 07, 2011	Oct. 31, 2015	Aug. 01, 2015	Aug. 02, 2014	Aug. 01, 2015	Aug. 02, 2014	Jan. 31, 2015
Line of Credit Facility [Line Items]
Interest Income (Expense), Net				$ (4,281,000)	$ (4,075,000)	$ (8,425,000)	$ (7,952,000)
Credit facility borrowings				5,000,000		5,000,000		$ 0
Proceeds from Lines of Credit						0	618,000
Repayments of Long-term Lines of Credit						10,000,000	$ 0
Guarantee obligations [Member]
Line of Credit Facility [Line Items]
Letters of credit outstanding				7,700,000		7,700,000		$ 7,000,000
Wells Credit Facility [Member] | Wells Fargo Bank NA [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity		$ 100,000,000
Credit facility borrowings				5,000,000		5,000,000
Revolving credit facility reference to floating interest rate	1.94%
Availability under Wells Fargo Facility				70,600,000		70,600,000
Wells Credit Facility [Member] | Line of Credit [Member] | Five-Year Revolving Credit Facility [Member]
Line of Credit Facility [Line Items]
Term loan maturity period		5 years
Swing-line loans [Member] | Wells Fargo Bank NA [Member]
Line of Credit Facility [Line Items]
Maximum borrowing capacity				$ 12,500,000		$ 12,500,000
Subsequent Event [Member] | Wells Credit Facility [Member] | Line of Credit [Member]
Line of Credit Facility [Line Items]
Proceeds from Lines of Credit			$ 10,000,000
Repayments of Long-term Lines of Credit			$ 10,000,000