Summary of Activity for Non-vested Shares (Restricted Shares) (Detail) (USD $)	6 Months Ended
	Aug. 03, 2013
Number of Shares
Restricted shares outstanding at beginning of year	483,403
Restricted shares granted	2,229,364
Restricted shares vested	(310,088)
Restricted shares canceled
Restricted shares outstanding at end of quarter	2,402,679
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		[1]
Restricted shares outstanding at end of quarter	$ 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.