Nature of Business and Summary of Significant Accounting Policies - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Jan. 31, 2015 State Store	Feb. 01, 2014	Feb. 02, 2013
Nature Of Business And Summary Of Significant Accounting Policies [Line Items]
Number of stores leased and operated	605
Number of states	50
Cash and cash equivalents, maturity period	3 months
Accrued reserves against existing inventory	$ 3.6	$ 2.9
Number of months to recognize gift card breakage as revenue	24 months
Percentage of sales never exceeded by gift card breakage	1.00%
Store rents including common area maintenance	137	134	130
Advertising costs	$ 13	$ 12	$ 14
Percentage of net sales	10.00%