Income Taxes - Additional Information (Detail) (USD $) In Millions, unless otherwise specified	1 Months Ended	3 Months Ended
	May 03, 2014	May 03, 2014	May 04, 2013	Feb. 01, 2014
Income Tax Disclosure [Abstract]
Effective income tax rate		34.04%	51.06%
Canadian tax refund amount		$ 0.2
Valuation allowance retained against deferred tax assets	0.2	0.2
Unrecognized tax benefits	1.4	1.4		1.4
Exposures related to unrecognized tax benefits	0.4	0.4
Period of unrecognized tax benefits change	12 months
Accrued penalties and interest expenses	$ 0.4	$ 0.4		$ 0.3