Goodwill and Intangible Assets - Additional Information (Detail) - USD ($)	12 Months Ended
	Feb. 03, 2018	Jan. 28, 2017	Jan. 30, 2016
Goodwill And Intangible Assets Disclosure [Abstract]
Impairment of goodwill	$ 0	$ 0	$ 0
Impairment of intangible assets	0	0	0
Amortization expense of intangible assets	$ 100,000	$ 100,000	$ 900,000