Impairment of Long-Lived Assets - Details of Long-Lived Assets Tested and Impaired (Detail) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Jan. 31, 2015 Store	Feb. 01, 2014 Store
Goodwill and Intangible Assets Disclosure [Abstract]
Carrying value of assets tested for impairment	$ 1,115	$ 3,661
Carrying value of assets with impairment	291	1,500
Fair value of assets impaired	$ 87	$ 327
Number of stores tested for impairment	41	56
Number of stores with impairment	8	12