Other Current Liabilities (Detail) - USD ($) $ in Thousands	Jan. 28, 2018	Jan. 29, 2017
Accounts Payable and Accrued Liabilities [Abstract]
Accrued duty, freight, and other operating expenses	$ 33,695	$ 23,239
Sales tax collected	11,811	10,182
Forward currency contract liabilities	8,771	0
Accrued rent	7,074	5,562
Sales return allowances	6,293	4,728
Accrued capital expenditures	5,714	4,238
Other	6,631	4,612
Other current liabilities	$ 79,989	$ 52,561