Consolidated Balance Sheets (Parentheticals) (USD $)	May 02, 2015	Jan. 31, 2015
Stockholders' Equity:
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000us-gaap_CommonStockSharesAuthorized	100,000,000us-gaap_CommonStockSharesAuthorized
Common stock, shares issued	57,045,062us-gaap_CommonStockSharesIssued	56,448,663us-gaap_CommonStockSharesIssued
Common stock, shares outstanding	57,045,062us-gaap_CommonStockSharesOutstanding	56,448,663us-gaap_CommonStockSharesOutstanding

Face amount or stated value per share of common stock.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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Reference 1: http://www.xbrl.org/2003/role/presentationRef

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Reference 2: http://www.xbrl.org/2003/role/presentationRef

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