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Effect of Recording Stock-Based Compensation (Detail) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	May 04, 2013	Apr. 28, 2012
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 960	$ 1,001
Tax effect on stock-based compensation expense	(328)	(362)
Net effect on net income or loss	632	639
Employee and director stock options and awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	871	955
Non-employee stock award
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense		4
Employee stock purchase plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense	$ 89	$ 42

Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees.

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