Commitments and Contingencies - Additional Information (Detail) - USD ($)	3 Months Ended		6 Months Ended
	Jul. 30, 2016	Aug. 01, 2015	Jul. 30, 2016	Aug. 01, 2015
Contingencies And Commitments [Line Items]
Actual and anticipated legal settlements accrued	$ 400,000		$ 1,800,000	$ 100,000
Maximum [Member]
Contingencies And Commitments [Line Items]
Actual and anticipated legal settlements accrued		$ 100,000