Selected Quarterly Data (Parenthetical) (Detail) (USD $)	0 Months Ended	3 Months Ended	12 Months Ended
	Feb. 01, 2014	Feb. 01, 2014	Jan. 31, 2015	Feb. 01, 2014	Feb. 02, 2013
Quarterly Financial Information Disclosure [Abstract]
Non cash charge to establish deferred tax assets, valuation allowance allowance	$ 51,300,000	$ 51,300,000
Benefit or provision recognized on the loss from discontinued operations			$ 0	$ 0	$ 0