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Stock-Based Compensation Plans (Stock Option Activity) (Details) - $ / shares
 12 Months Ended
Aug. 26, 2017
Aug. 27, 2016
Aug. 29, 2015
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding [Roll Forward]      
Outstanding at beginning of year, Shares 10,000 167,394 457,421
Options granted, shares 63,800 10,000 0
Options exercised, Shares 0 0 0
Options cancelled, Shares 8,000 167,394 290,027
Outstanding at end of year, Shares 65,800 10,000 167,394
Exercisable at end of year, Shares 3,333 0 167,394
Vested and expected to vest at end of year, Shares 65,800 10,000 167,394
Share-based Compensation Arrangement by Share-based Payment Award, Options, Outstanding, Weighted Average Exercise Price [Roll Forward]      
Outstanding at beginning of year, Wtd. Avg. Exercise Price per Share (in dollars per share) $ 16.67 $ 28.30 $ 30.38
Options granted, Wtd. Avg. Exercise Price per Share (in dollars per share) 29.92 16.67 0.00
Options exercised, Wtd. Avg. Exercise Price per Share (in dollars per share) 0.00 0.00 0.00
Options cancelled, Wtd. Avg. Exercise Price per Share (in dollars per share) 27.89 28.30 31.58
Outstanding at end of year, Wtd. Avg. Exercise Price per Share (in dollars per share) 28.15 16.67 28.30
Exercisable at end of year, Wtd. Avg. Exercise Price per Share (in dollars per share) 16.67 0.00 28.30
Vested and expected to vest at end of year, Wtd. Avg. Exercise Price per Share (in dollars per share) $ 28.15 $ 16.67 $ 28.30