Stock-Based Compensation (Details) (USD $)	3 Months Ended	6 Months Ended
Jul. 30, 2011	Jul. 31, 2010	Jul. 30, 2011	Jul. 31, 2010
Stock-based compensation expense by type [Abstract]
Stock options	$ 18,000	$ 119,000	$ 424,000	$ 620,000
Restricted stock awards	1,226,000	816,000	2,619,000	1,782,000
Employee stock purchase	14,000	16,000	40,000	39,000
Director deferred compensation	15,000	0	30,000	0
Total stock-based compensation expense	1,273,000	951,000	3,113,000	2,441,000
Income tax benefit recognized	466,000	329,000	1,142,000	827,000
Stock-based compensation expense, net of income tax	807,000	622,000	1,971,000	1,614,000
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares of common stock purchased during the period under the employee stock purchase plan (in shares)	1,839		5,078
Weighted-average grant date fair value of stock options granted (in dollars per share)	$ 15.95		$ 12.76
Grant date fair value of shares purchased through the employee stock purchase plan (in dollars per share)	$ 7.84		$ 7.89
Purchase price paid for stock purchased through the employee stock purchase plan (in dollars per share)	$ 30.71		$ 30.54
Total compensation costs related to nonvested restricted stock unit awards not yet recognized	$ 9,500,000		$ 9,500,000
Weighted-average period over which nonvested restricted stock unit awards are expected to be recognized (in years)			2.79
Stock Options [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Awarded	1,117		33,210
Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Awarded	0		102,143
Performance-based Restricted Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Awarded	0		53,000
Deferred Stock Units [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares Awarded	368		787

An Employee Stock Purchase Plan is a tax-efficient means by which employees of a corporation can purchase the corporation's stock.

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The purchase price, per share, at which employees acquired shares under the Employee Stock Purchase Plan during the reporting period.

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The amount of expense, net of income tax, 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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The compensation expense recognized during the period pertaining to the deferred compensation arrangement.

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As of the balance sheet date, the aggregate unrecognized cost of equity-based awards made to employees under equity-based compensation awards that have yet to vest.

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The weighted average period over which unrecognized compensation is expected to be recognized for equity-based compensation plans, using a decimal to express in number of years.

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The total recognized tax benefit related to compensation cost for equity-based payment arrangements recognized in income during the period.

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The noncash expense that represents the cost of restricted stock or unit distributed to employees as compensation.

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The aggregate amount of noncash, equity-based employee remuneration. This may include the value of stock or unit options, amortization of restricted stock or units, and adjustment for officers' compensation. As noncash, this element is an add back when calculating net cash generated by operating activities using the indirect method.

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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Number of shares issued during the period as a result of an employee stock purchase plan.

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The noncash expense that accounts for the value of stock or unit options distributed to employees as compensation.

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