Goodwill and Other Intangible Assets Intangibles (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	May 31, 2017	May 31, 2016	May 31, 2017	May 31, 2016	Aug. 31, 2016
Finite-Lived Intangible Assets [Line Items]
Amortization of Intangible Assets	$ 1,000	$ 1,100	$ 3,300	$ 4,900
Other Intangible Assets [Member] | Minimum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			2 years
Other Intangible Assets [Member] | Maximum [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Asset, Useful Life			30 years
Customer Lists [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Carrying Amount	48,975		$ 48,975		$ 51,554
Finite-Lived Intangible Assets, Accumulated Amortization	(14,568)		(14,568)		(15,550)
Finite-Lived Intangible Assets, Net	34,407		34,407		36,004
Trademarks and other intangible assets [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Carrying Amount	23,618		23,618		35,015
Finite-Lived Intangible Assets, Accumulated Amortization	(21,713)		(21,713)		(26,253)
Finite-Lived Intangible Assets, Net	1,905		1,905		8,762
Total intangible assets [Domain]
Finite-Lived Intangible Assets [Line Items]
Finite-Lived Intangible Assets, Carrying Amount	72,593		72,593		86,569
Finite-Lived Intangible Assets, Accumulated Amortization	(36,281)		(36,281)		(41,803)
Finite-Lived Intangible Assets, Net	$ 36,312		$ 36,312		$ 44,766