Stock Option Activity under Nineteen Ninety Two Plan (Detail) (Employee Stock Plan, 1992 Plan, USD $)	3 Months Ended
	May 03, 2014
Employee Stock Plan, 1992 Plan
Stock Options
Outstanding at beginning of year	911,775
Options granted
Options canceled	(159,775)
Options exercised
Outstanding at end of quarter	752,000
Options exercisable at end of quarter	752,000
Weighted-average Exercise price per Option
Outstanding at beginning of year	$ 6.82
Options granted
Options canceled	$ 9.08
Options exercised
Outstanding at end of quarter	$ 6.34
Options exercisable at end of quarter	$ 6.34
Weighted-average Remaining Contractual Term
Outstanding at end of quarter	6 months
Options exercisable at end of quarter	6 months
Aggregate Intrinsic Value
Outstanding at end of quarter	$ 1,485
Options exercisable at end of quarter	$ 1,485