Impairment of Long-Lived Assets - Details of Long-Lived Assets Tested and Impaired (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	May 04, 2013 Store	Apr. 28, 2012 Store
Property Plant And Equipment Useful Life And Values [Abstract]
Carrying value of assets tested for impairment	$ 4,208	$ 13,497
Carrying value of assets with impairment	1,714	2,826
Fair value of assets impaired	$ 853	$ 1,337
Number of stores tested for impairment	75	119
Number of stores with impairment	14	25