Discontinued Operations - Additional Information (Detail) - USD ($) $ in Thousands			3 Months Ended	12 Months Ended
	Jun. 13, 2014	Dec. 13, 2013	Feb. 28, 2015	Aug. 31, 2015	Aug. 31, 2014	Aug. 31, 2013
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Proceeds from sale of businesses, net of transaction costs				$ 0	$ 289,590	$ 4,854
Net gain on disposal of businesses				0	(29,152)	0
Gain on product line divestiture				0	(13,495)	0
Gain on disposal					34,459	0
Impairment charge				84,353	0	0
Goodwill, Impairment Charge			$ 78,000	$ 78,530
Recreational vehicle [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Date	Jun. 13, 2014
Proceeds from sale of businesses, net of transaction costs	$ 36,500
Net gain on disposal of businesses	$ 2,813
Gain on product line divestiture					13,495
Disposal Group, Not Discontinued Operation, annual revenue					$ 22,050
Electrical
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Disposal Date		Dec. 13, 2013
Proceeds from sale of businesses, net of transaction costs		$ 252,400
Gain on disposal		34,459
Gain on disposal, net of tax		$ 26,339
Impairment charge						159,100
Goodwill, Impairment Charge						137,800
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill)						$ 21,300