Summary of Activity for Non-vested Shares (Restricted Shares) (Detail) (Employee Stock Plan, 2006 Plan, Restricted Stock, USD $)	12 Months Ended
	Feb. 01, 2014
Employee Stock Plan, 2006 Plan | Restricted Stock
Number of Shares
Restricted shares outstanding at beginning of year	483,403
Restricted shares granted	2,229,364
Restricted shares vested	(311,755)
Restricted shares canceled	(383,072)
Restricted shares outstanding at end of year	2,017,940
Weighted-average Grant-Date Fair value
Restricted shares outstanding at beginning of year	$ 3.90	[1]
Restricted shares granted	$ 5.08	[1]
Restricted shares vested	$ 3.74	[1]
Restricted shares canceled	$ 5.05	[1]
Restricted shares outstanding at end of year	$ 5.01	[1]

[1] The fair value of a restricted share is equal to the Company's closing stock price on the date of grant.