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Business Segments (Details)	3 Months Ended								12 Months Ended
	Aug. 26, 2017 USD ($)	May 27, 2017 USD ($)	Feb. 25, 2017 USD ($)	Nov. 26, 2016 USD ($) reportable_segments	Aug. 27, 2016 USD ($)	May 28, 2016 USD ($)	Feb. 27, 2016 USD ($)	Nov. 28, 2015 USD ($)	Aug. 26, 2017 USD ($) reportable_segments	Aug. 27, 2016 USD ($) reportable_segments	Aug. 29, 2015 USD ($)
Segment Reporting Information [Line Items]
Number of Reportable Segments | reportable_segments				2					2	1
Net revenues	$ 454,936,000	$ 476,364,000	$ 370,510,000	$ 245,308,000	$ 263,254,000	$ 272,077,000	$ 225,672,000	$ 214,223,000	$ 1,547,119,000	$ 975,226,000	$ 976,505,000
Purchases of property and equipment									13,993,000	24,551,000	16,573,000
Assets	902,512,000				390,718,000				902,512,000	390,718,000
Net income	24,923,000	$ 19,391,000	$ 15,278,000	$ 11,738,000	13,146,000	$ 14,438,000	$ 9,354,000	$ 8,558,000	71,330,000	45,496,000	41,210,000
Interest expense									16,837,000	0	10,000
Provision for income taxes									37,269,000	20,702,000	18,324,000
Depreciation									7,315,000	5,745,000	4,513,000
Amortization of intangible assets									24,660,000	0	0
EBITDA									157,411,000	71,943,000	64,057,000
Postretirement health care benefit income									(24,796,000)	(6,124,000)	(4,073,000)
Legal settlement									0	(3,400,000)	0
Transaction costs									6,592,000	355,000	0
Non-operating income									(330,000)	(457,000)	(115,000)
Adjusted EBITDA									138,877,000	62,317,000	59,869,000
Operating Segments [Member] | Motorized [Member]
Segment Reporting Information [Line Items]
Net revenues									861,922,000	885,814,000	904,821,000
Purchases of property and equipment									9,587,000	23,920,000	10,923,000
Assets	333,600,000				368,941,000				333,600,000	368,941,000
Adjusted EBITDA									43,948,000	57,365,000	57,102,000
Operating Segments [Member] | Towable [Member]
Segment Reporting Information [Line Items]
Net revenues									685,197,000	89,412,000	71,684,000
Purchases of property and equipment									4,406,000	631,000	5,650,000
Assets	$ 568,912,000				$ 21,777,000				568,912,000	21,777,000
Adjusted EBITDA									$ 94,929,000	$ 4,952,000	$ 2,767,000

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The aggregate expense charged against earnings to allocate the cost of intangible assets (nonphysical assets not used in production) in a systematic and rational manner to the periods expected to benefit from such assets. As a noncash expense, this element is added back to net income when calculating cash provided by or used in operations using the indirect method.

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