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Business Combinations - Pro Forma Information (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended
	Nov. 30, 2019	Aug. 31, 2019	Nov. 24, 2018
Business Acquisition [Line Items]
Acquisition related costs	$ 600	$ 600
Newmar
Business Acquisition [Line Items]
Pro forma net revenues	741,717		$ 663,786
Pro forma net income	$ 17,197		$ 10,665
Pro forma income per share - basic (in dollars per share)	$ 0.51		$ 0.32
Pro forma income per share - diluted (in dollars per share)	$ 0.50		$ 0.32
Acquisition related costs	$ 10,600
Newmar | Amortization of intangibles (1 year or less useful life)(1)
Business Acquisition [Line Items]
Nonrecurring adjustments	2,251		$ (9,210)
Newmar | Increase in amortization of intangibles(2)
Business Acquisition [Line Items]
Nonrecurring adjustments	(1,057)		(1,398)
Newmar | Expenses related to business combination (transaction costs)
Business Acquisition [Line Items]
Nonrecurring adjustments	9,950		(10,606)
Newmar | Interest to reflect new debt structure
Business Acquisition [Line Items]
Nonrecurring adjustments	(3,367)		(4,546)
Newmar | Taxes related to the adjustments to the pro forma data and to the income of Newmar(5)
Business Acquisition [Line Items]
Nonrecurring adjustments	$ (832)		$ 3,056

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