Income Per Share (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		6 Months Ended
	Feb. 27, 2021	Feb. 29, 2020	Feb. 27, 2021	Feb. 29, 2020
Numerator
Net income	$ 69,068	$ 17,268	$ 126,491	$ 31,336
Denominator
Weighted average common shares outstanding (in shares)	33,533,000	33,614,000	33,571,000	32,840,000
Dilutive impact of stock compensation awards (in shares)	270,000	304,000	250,000	303,000
Dilutive impact of convertible notes (in shares)	107,000	0	0	0
Weighted average common shares outstanding, assuming dilution (in shares)	33,910,000	33,918,000	33,821,000	33,143,000
Anti-dilutive securities excluded from Weighted average common shares outstanding, assuming dilution (in shares)	0	45,000	53,000	94,000
Basic income per common share (in dollars per share)	$ 2.06	$ 0.51	$ 3.77	$ 0.95
Diluted income per common share (in dollars per share)	$ 2.04	$ 0.51	$ 3.74	$ 0.95