Stock Option Activity under Nineteen Ninety Two Plan (Detail) (Employee Stock Plan, 1992 Plan, USD $)	12 Months Ended
	Feb. 01, 2014
Employee Stock Plan, 1992 Plan
Stock Options
Outstanding at beginning of year	1,329,815
Options granted
Options canceled	(18,000)
Options exercised	(400,040)	[1]
Outstanding at end of year	911,775
Vested and expected to vest at end of year	911,775
Options exercisable at end of year	911,775
Weighted-average Exercise price per Option
Outstanding at beginning of year	$ 6.35
Options granted
Options canceled	$ 8.73
Options exercised	$ 5.16	[1]
Outstanding at end of year	$ 6.82
Vested and expected to vest at end of year	$ 6.82
Options exercisable at end of year	$ 6.82
Weighted Average Remaining Contractual Term (Years)
Outstanding at end of year	7 months 6 days
Vested and expected to vest at end of year	7 months 6 days
Options exercisable at end of year	7 months 6 days
Aggregate Intrinsic Value
Outstanding at end of year		[2]
Vested and expected to vest at end of year		[2]
Options exercisable at end of year		[2]

[1] Includes options that were exercised through net share settlement. As a result, only 96,245 shares were issued with no corresponding option cost.

[2] The majority of outstanding options were out-of-the-money at February 1, 2014; therefore, the intrinsic value was immaterial.