Income Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Nov. 28, 2020	Nov. 30, 2019
Numerator
Net income	$ 57,423	$ 14,068
Denominator
Weighted average common shares outstanding (in shares)	33,609,000	32,067,000
Dilutive impact of stock compensation awards (in shares)	230,000	200,000
Weighted average common shares outstanding, assuming dilution (in shares)	33,839,000	32,267,000
Anti-dilutive securities excluded from Weighted average common shares outstanding, assuming dilution (in shares)	140,000	73,000
Basic income per common share (in dollars per share)	$ 1.71	$ 0.44
Diluted income per common share (in dollars per share)	$ 1.70	$ 0.44