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Significant Accounting Policies (Details) (USD $)	3 Months Ended
Significant Accounting Policies (Details) (USD $)	Apr. 28, 2012	Apr. 30, 2011
Employee Service Share-based Compensation, Allocation of Recognized Period Costs [Line Items]
Award vesting period	one to three years
Share-based compensation expense	$ 600,000	$ 500,000
Share-based compensation tax benefit recognized	$ 200,000	$ 200,000

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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