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Business Combinations - Pro Forma Information (Details) - USD ($)	3 Months Ended	12 Months Ended
	Aug. 31, 2019	Aug. 28, 2021	Aug. 29, 2020	Aug. 31, 2019
Business Acquisition [Line Items]
Acquisition related costs	$ 652,000	$ 725,000	$ 9,761,000	$ 0
Expenses related to business combination (transaction costs)
Business Acquisition [Line Items]
Acquisition related costs			652,000	652,000
Newmar Corporation
Business Acquisition [Line Items]
Net revenues			2,508,792,000	2,645,914,000
Net income			$ 72,609,000	$ 101,692,000
Earnings per share - basic (in dollars per share)			$ 2.16	$ 3.03
Earnings per share - diluted (in dollars per share)			$ 2.11	$ 3.02
Acquisition related costs		$ 0	$ 9,761,000
Newmar Corporation | Amortization of intangibles (1 year or less useful life)
Business Acquisition [Line Items]
Nonrecurring adjustments			13,610,000	$ (13,610,000)
Newmar Corporation | Increase in amortization of intangibles
Business Acquisition [Line Items]
Nonrecurring adjustments			(1,061,000)	(5,578,000)
Newmar Corporation | Expenses related to business combination (transaction costs)
Business Acquisition [Line Items]
Nonrecurring adjustments			9,761,000	(9,950,000)
Newmar Corporation | Interest to reflect new debt structure
Business Acquisition [Line Items]
Nonrecurring adjustments			(4,356,000)	(19,155,000)
Newmar Corporation | Taxes related to the adjustments to the pro forma data and to the income of Newmar
Business Acquisition [Line Items]
Nonrecurring adjustments			$ (2,968,000)	$ 2,686,000

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