Stock Option Activity under Nineteen Ninety Two Plan (Detail) (USD $)	9 Months Ended
	Nov. 01, 2014		Nov. 02, 2013
Number of Shares
Options granted	141,684		2,765,414
Employee Stock Plan, 1992 Plan
Number of Shares
Outstanding options at beginning of year	911,775
Options granted	0
Options canceled	(684,775)
Options exercised	(7,500)	[1]
Outstanding options at end of quarter	219,500
Options exercisable at end of quarter	219,500
Weighted-average exercise price per option
Outstanding options at beginning of year	$ 6.82
Options granted	$ 0
Options canceled	$ 6.77
Options exercised	$ 5.67	[1]
Outstanding options at end of quarter	$ 7.02
Options exercisable at end of quarter	$ 7.02
Weighted-average remaining contractual term
Outstanding options at end of quarter	7 months 6 days
Options exercisable at end of quarter	7 months 6 days
Aggregate Intrinsic Value
Outstanding options at end of quarter	$ 0	[2]
Options exercisable at end of quarter	$ 0	[2]

[1] Options were exercised through net share settlement. As a result, no shares were issued. The intrinsic value of options exercised was immaterial.

[2] The intrinsic value of the options outstanding at November 1, 2014 was immaterial.