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Net Income Per Share - Weighted Average Shares (Detail) - shares shares in Thousands	3 Months Ended								12 Months Ended
	May. 03, 2015	Feb. 01, 2015	Nov. 02, 2014	Aug. 03, 2014	Apr. 27, 2014	Jan. 26, 2014	Oct. 27, 2013	Jul. 28, 2013	May. 03, 2015	Apr. 27, 2014	Apr. 28, 2013
Earnings Per Share [Abstract]
weighted-average common shares outstanding, basic	12,219	12,219	12,218	12,212	12,188	12,188	12,183	12,148	12,217	12,177	12,235
dilutive effect of stock-based compensation									205	237	215
weighted-average common shares outstanding, diluted	12,440	12,417	12,401	12,404	12,413	12,405	12,389	12,366	12,422	12,414	12,450

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Additional shares included in the calculation of diluted EPS as a result of the potentially dilutive effect of share based payment arrangements using the treasury stock method.

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-Publisher FASB



-Name Accounting Standards Codification



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The average number of shares or units issued and outstanding that are used in calculating diluted EPS or earnings per unit (EPU), determined based on the timing of issuance of shares or units in the period.

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Number of [basic] shares or units, after adjustment for contingently issuable shares or units and other shares or units not deemed outstanding, determined by relating the portion of time within a reporting period that common shares or units have been outstanding to the total time in that period.

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



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