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Earnings Per Share (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 6 Months Ended
Feb. 27, 2016
Feb. 28, 2015
Feb. 27, 2016
Feb. 28, 2015
Numerator for basic and diluted earnings per share:        
Net income (loss) $ (448) $ 427 $ 342 $ 2,255
Denominator for basic and diluted earnings per share:        
Basic weighted average shares outstanding 15,299 16,908 15,758 16,889
Effect of dilutive securities:        
Stock options and other share-based awards   178 145 200
Diluted weighted average shares outstanding 15,299 17,086 15,903 17,089
EPS Calculations:        
Net income (loss) per share: Basic $ (0.03) $ 0.03 $ 0.02 $ 0.13
Net income (loss) per share: Diluted $ (0.03) $ 0.02 $ 0.02 $ 0.13