Condensed Consolidated Statements of Income and Comprehensive Income - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Feb. 27, 2021	Feb. 29, 2020	Feb. 27, 2021	Feb. 29, 2020
Income Statement [Abstract]
Net revenues	$ 839,886	$ 626,810	$ 1,633,017	$ 1,215,268
Cost of goods sold	683,304	547,028	1,339,431	1,056,873
Gross profit	156,582	79,782	293,586	158,395
Selling, general, and administrative expenses	53,016	42,164	101,415	93,269
Amortization of intangible assets	3,591	7,974	7,181	11,588
Total operating expenses	56,607	50,138	108,596	104,857
Operating income	99,975	29,644	184,990	53,538
Interest expense	10,052	8,651	19,993	14,700
Non-operating income	(311)	(270)	(217)	(386)
Income before income taxes	90,234	21,263	165,214	39,224
Provision for income taxes	21,166	3,995	38,723	7,888
Net income	$ 69,068	$ 17,268	$ 126,491	$ 31,336
Income per common share:
Basic (in dollars per share)	$ 2.06	$ 0.51	$ 3.77	$ 0.95
Diluted (in dollars per share)	$ 2.04	$ 0.51	$ 3.74	$ 0.95
Weighted average common shares outstanding:
Basic (in shares)	33,533	33,614	33,571	32,840
Diluted (in shares)	33,910	33,918	33,821	33,143
Net income	$ 69,068	$ 17,268	$ 126,491	$ 31,336
Other comprehensive income (loss):
Amortization of net actuarial loss (net of tax of $3, $3, $6, and $5)	8	8	17	16
Interest rate swap activity (net of tax of $—, $—, $—, and $22)	0	0	0	(68)
Total other comprehensive income (loss)	8	8	17	(52)
Comprehensive income	$ 69,076	$ 17,276	$ 126,508	$ 31,284