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Note 5 - Diluted Net Income Per Share - Diluted Net Income Per Share (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
	Aug. 27, 2017	Aug. 28, 2016
Numerator:
Net income applicable to Common Stockholders	$ 2,146	$ 3,312
Denominator:
Weighted average shares for basic net income per share (in shares)	27,506	27,219
Effect of dilutive securities:
Stock options and restricted stock units (in shares)	352	302
Weighted average shares for diluted net income per share (in shares)	27,858	27,521
Diluted net income per share (in dollars per share)	$ 0.08	$ 0.12

X

- Definition

The amount of net income (loss) for the period available to each share of common stock or common unit outstanding during the reporting period and to each share or unit that would have been outstanding assuming the issuance of common shares or units for all dilutive potential common shares or units outstanding during the reporting period.

+ References

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-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 225
-Section S99
-Paragraph 1
-Subparagraph (SX 210.7-04(19))
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- Definition

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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- Definition

The portion of profit or loss for the period, net of income taxes, which is attributable to the parent.

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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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This element represents the weighted average total number of shares issued throughout the period including the first (beginning balance outstanding) and last (ending balance outstanding) day of the period before considering any reductions (for instance, shares held in treasury) to arrive at the weighted average number of shares outstanding. Weighted average relates to the portion of time within a reporting period that common shares have been issued and outstanding to the total time in that period. Such concept is used in determining the weighted average number of shares outstanding for purposes of calculating earnings per share (basic).

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