Discontinued Operations (Additional Information) (Details 1) - USD ($) $ in Thousands		12 Months Ended
	Dec. 17, 2013	Aug. 31, 2015	Aug. 31, 2014	Aug. 31, 2016	Apr. 01, 2014
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
(Loss) gain on sale of discontinued operations		$ (875)	$ 223,299
Direct transaction cost			16,500
Income tax expense		$ 575	$ 7,579
Estimate of Fair Value Measurement [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration for the sale of a business preferred stock				$ 30,800
Aftermarket services (AMS) [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration for the sale of a business	$ 725,000
Cash consideration for the sale of a business	675,000
Consideration for the sale of a business preferred stock	$ 50,000
Accretes dividends at an annual rate	8.00%
Redeemable period	9 years
Reduction in final purchase price	$ 100,200
Aftermarket services (AMS) [Member] | Estimate of Fair Value Measurement [Member]
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Consideration for the sale of a business preferred stock					$ 33,200