Stock Option Activity under Nineteen Ninety Two Plan (Detail) (Employee Stock Plan, 1992 Plan, USD $)	6 Months Ended
	Aug. 02, 2014
Employee Stock Plan, 1992 Plan
Number of Shares
Outstanding at beginning of year	911,775
Options granted
Options canceled	(440,775)
Options exercised	(7,500)
Outstanding at end of quarter	463,500
Options exercisable at end of quarter	463,500
Weighted-average Exercise price per Option
Outstanding at beginning of year	$ 6.82
Options granted
Options canceled	$ 7.28
Options exercised	$ 5.67
Outstanding at end of quarter	$ 6.40
Options exercisable at end of quarter	$ 6.40
Weighted-average Remaining Contractual Term
Outstanding at end of quarter	4 months 24 days
Options exercisable at end of quarter	4 months 24 days
Aggregate Intrinsic Value
Outstanding at end of quarter		[1]
Options exercisable at end of quarter		[1]

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