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Net (Loss) Income Per Share - Weighted Average Shares (Detail) - shares shares in Thousands	3 Months Ended
	Jul. 29, 2018	Jul. 30, 2017
Earnings Per Share [Abstract]
Weighted average common shares outstanding, basic	12,510	12,399
Dilutive effect of stock-based compensation	90	191
Weighted average common shares outstanding, diluted	12,600	12,590

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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
-Topic 260
-SubTopic 10
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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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