Earnings (Loss) Per Share (Computation Of EPS) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended
Nov. 30, 2017	Nov. 26, 2016
Numerator for basic and diluted earnings per share:
Net loss	$ (2,392)	$ (3,958)
Denominator for basic and diluted earnings per share:
Basic weighted average shares outstanding	13,725	13,791
Diluted weighted average shares outstanding	13,725	13,791
EPS Calculations:
Net loss per share: Basic	$ (0.17)	$ (0.29)
Net loss per share: Diluted	$ (0.17)	$ (0.29)

Earnings Per Share Basic And Diluted1 [Abstract]

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Earnings Per Share Basic And Diluted Other Disclosures1 [Abstract]

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The amount of net income (loss) for the period per each share of common stock or unit outstanding during the reporting period.

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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.

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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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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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