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Net Earnings Per Share (Policies)	6 Months Ended
Net Earnings Per Share (Policies)	Jul. 30, 2011
Net earnings per share	Basic earnings per share data are based on the weighted average outstanding common shares during the period. Diluted earnings per share data are based on the weighted average outstanding common shares and the effect of all dilutive potential common shares, including stock options.
Comprehensive Income	Comprehensive income consists of net income and unrealized gains and losses on available-for-sale securities. Unrealized losses on the Company’s investments in auction-rate securities have been included in accumulated other comprehensive loss and are separately included as a component of stockholders’ equity, net of related income taxes.

Disclosure of accounting policy for computing basic and diluted earnings or loss per share for each class of common stock and participating security. Addresses all significant policy factors, including any antidilutive items that have been excluded from the computation and takes into account stock dividends, splits and reverse splits that occur after the balance sheet date of the latest reporting period but before the issuance of the financial statements.

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- Definition

Disclosure of accounting policy for its capital stock transactions, including dividends and accumulated other comprehensive income.

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