Business Combination - Summary of Purchase Price Allocation Based on Estimated Fair Value of Acquired Assets and Assumed Liabilities, Prior to and After Purchase Price Allocation Adjustments (Detail) - USD ($) $ in Thousands	3 Months Ended
	Apr. 29, 2017	Jan. 28, 2017
Business Acquisition [Line Items]
Goodwill	$ 174,158	$ 173,603
Design Investors WW Acquisition Company, LLC [Member]
Business Acquisition [Line Items]
Tangible assets acquired and liabilities assumed	18,014	18,615
Trademarks	52,100	52,100
Goodwill	49,830	49,229
Total	119,944	$ 119,944
Purchase Price Allocation Adjustments, Tangible assets acquired and liabilities assumed	(601)
Purchase Price Allocation Adjustments, Goodwill	$ 601