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Income Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Nov. 30, 2019	Nov. 24, 2018
Numerator
Net income	$ 14,068	$ 22,161
Denominator
Weighted average common shares outstanding (in shares)	32,067,000	31,567,000
Dilutive impact of stock compensation awards (in shares)	200,000	247,000
Weighted average common shares outstanding, assuming dilution (in shares)	32,267,000	31,814,000
Basic income per common share (in dollars per share)	$ 0.44	$ 0.70
Diluted income per common share (in dollars per share)	$ 0.44	$ 0.70
Share-based Payment Arrangement, Option
Denominator
Anti-dilutive securities excluded from Weighted average common shares outstanding, assuming dilution (in shares)	73,000	90,000

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Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

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