Condensed Consolidated Statements of Income and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended
	Nov. 28, 2020	Nov. 30, 2019
Income Statement [Abstract]
Net revenues	$ 793,131	$ 588,458
Cost of goods sold	656,127	509,845
Gross profit	137,004	78,613
Selling, general, and administrative expenses	48,399	51,105
Amortization of intangible assets	3,590	3,614
Total operating expenses	51,989	54,719
Operating income	85,015	23,894
Interest expense	9,941	6,049
Non-operating loss (income)	94	(116)
Income before income taxes	74,980	17,961
Provision for income taxes	17,557	3,893
Net income	$ 57,423	$ 14,068
Income per common share:
Basic (in dollars per share)	$ 1.71	$ 0.44
Diluted (in dollars per share)	$ 1.70	$ 0.44
Weighted average common shares outstanding:
Basic (in shares)	33,609	32,067
Diluted (in shares)	33,839	32,267
Net income	$ 57,423	$ 14,068
Other comprehensive income (loss):
Amortization of net actuarial loss (net of tax of $3 and $3)	(9)	(8)
Interest rate swap activity (net of tax of $— and $22)	0	(68)
Total other comprehensive income (loss)	9	(60)
Comprehensive income	$ 57,432	$ 14,008